JP7059848B2 - Manufacturing method of heat transfer plate and friction stir welding method - Google Patents

Manufacturing method of heat transfer plate and friction stir welding method Download PDF

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JP7059848B2
JP7059848B2 JP2018139629A JP2018139629A JP7059848B2 JP 7059848 B2 JP7059848 B2 JP 7059848B2 JP 2018139629 A JP2018139629 A JP 2018139629A JP 2018139629 A JP2018139629 A JP 2018139629A JP 7059848 B2 JP7059848 B2 JP 7059848B2
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side pin
end side
main joining
base member
spiral
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JP2020015065A (en
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久司 堀
伸城 瀬尾
宏介 山中
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Nippon Light Metal Co Ltd
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Description

本発明は、伝熱板の製造方法及び摩擦攪拌接合方法に関する。 The present invention relates to a method for manufacturing a heat transfer plate and a method for friction stir welding.

特許文献１には、ベース部材の内部に形成された流路に流体を流通させて熱交換等を行う伝熱板の製造方法が記載されている。ベース部材には、表面に開口する蓋溝と、この蓋溝の底面に形成された凹溝とが形成されている。伝熱板を製造する際には、蓋溝に蓋板を配置して、この蓋板の側面と蓋溝の側壁とで形成された突合部に対して摩擦攪拌接合を行っている。特許文献１では、突合部に回転した攪拌ピンを挿入し、攪拌ピンのみをベース部材及び蓋板に接触させた状態で摩擦攪拌接合を行う。当該従来技術によれば、攪拌ピンの外周面には螺旋溝が刻設されており、攪拌ピンのみを被接合部材に接触させつつ基端部を露出させた状態で摩擦攪拌接合を行うため、接合の高さ位置が変化しても欠陥の発生を抑制することができるとともに、摩擦攪拌装置への負荷も軽減することができる。 Patent Document 1 describes a method for manufacturing a heat transfer plate in which a fluid is circulated in a flow path formed inside a base member to exchange heat and the like. The base member is formed with a lid groove that opens on the surface and a concave groove formed on the bottom surface of the lid groove. When manufacturing a heat transfer plate, a lid plate is arranged in the lid groove, and friction stir welding is performed on the abutting portion formed by the side surface of the lid plate and the side wall of the lid groove. In Patent Document 1, a rotated stirring pin is inserted into the abutting portion, and friction stir welding is performed with only the stirring pin in contact with the base member and the lid plate. According to the prior art, a spiral groove is engraved on the outer peripheral surface of the stirring pin, and friction stir welding is performed with only the stirring pin in contact with the member to be joined while the base end is exposed. Even if the height position of the joint changes, the occurrence of defects can be suppressed, and the load on the friction stirr can be reduced.

特開２０１５－１３９８００号公報JP-A-2015-139800

しかし、特許文献１の製造方法では、ショルダ部で塑性流動材を押えないため、金属部材の表面の段差凹溝が大きくなるとともに、接合表面粗さが大きくなるという問題がある。また、段差凹溝の脇に膨出部（接合前に比べて金属部材の表面が膨らむ部位）が形成されるという問題がある。 However, in the manufacturing method of Patent Document 1, since the plastic fluid material is not pressed by the shoulder portion, there is a problem that the stepped groove on the surface of the metal member becomes large and the joint surface roughness becomes large. Further, there is a problem that a bulging portion (a portion where the surface of the metal member bulges as compared with that before joining) is formed on the side of the stepped concave groove.

このような観点から、本発明は、金属部材の表面の段差凹溝を小さくすることができるとともに、接合表面粗さを小さくすることができる伝熱板の製造方法及び摩擦攪拌接合方法を提供することを課題とする。 From such a viewpoint, the present invention provides a method for manufacturing a heat transfer plate and a method for friction stir welding, which can reduce the stepped groove on the surface of a metal member and also reduce the roughness of the joint surface. That is the issue.

このような課題を解決するために本発明は、ベース部材の表面に開口する凹溝の周囲に形成された蓋溝に、蓋板を挿入する蓋板挿入工程と、前記蓋溝の側壁と前記蓋板の側面との突合せ部に沿って基端側ピンと先端側ピンとを備えた本接合用回転ツールを相対移動させて摩擦攪拌を行う本接合工程と、を含み、前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、前記本接合工程において、前記ベース部材の裏面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記突合せ部に挿入し、前記基端側ピンの外周面を前記ベース部材及び前記蓋板に接触させた状態で摩擦攪拌を行うことを特徴とする。 In order to solve such a problem, the present invention has a lid plate inserting step of inserting a lid plate into a lid groove formed around a concave groove opening on the surface of the base member, a side wall of the lid groove, and the above. The main joining step of moving the main joining rotation tool provided with the base end side pin and the tip end side pin relative to each other along the abutting portion with the side surface of the lid plate to perform frictional stirring, and the above-mentioned main joining rotation tool. The taper angle of the proximal end side pin is 135 ° to 160 °, which is larger than the taper angle of the distal end side pin, and the outer peripheral surface of the proximal end side pin is spiral and side view. Then , a stepped step portion is formed , a spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 °. The angle is ~ 90 °, and in the main joining step, the tip side pin of the main joining rotation tool that has been rotated while cooling the base member and the lid plate with a cooling plate installed on the back surface side of the base member. It is characterized in that it is inserted into the butt portion and frictional stirring is performed in a state where the outer peripheral surface of the base end side pin is in contact with the base member and the lid plate.

また、本発明は、ベース部材の表面に開口する蓋溝の底面に形成された凹溝に、熱媒体用管を挿入する熱媒体用管挿入工程と、前記蓋溝に蓋板を挿入する蓋板挿入工程と、前記蓋溝の側壁と前記蓋板の側面との突合せ部に沿って基端側ピンと先端側ピンとを備えた本接合用回転ツールを相対移動させて摩擦攪拌を行う本接合工程と、を含み、前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、前記本接合工程において、前記ベース部材の裏面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記突合せ部に挿入し、前記基端側ピンの外周面を前記ベース部材及び前記蓋板に接触させた状態で摩擦攪拌を行うことを特徴とする。 Further, the present invention comprises a heat medium tube insertion step of inserting a heat medium tube into a concave groove formed on the bottom surface of a lid groove opening on the surface of a base member, and a lid for inserting a lid plate into the lid groove. The plate insertion step and the main joining step of performing frictional stirring by relatively moving the main joining rotary tool provided with the proximal end side pin and the distal end side pin along the abutting portion between the side wall of the lid groove and the side surface of the lid plate. The taper angle of the proximal end side pin of the main joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the distal end side pin, and is larger than the taper angle of the proximal end side pin. The outer peripheral surface is spiral, and a stepped step portion is formed when viewed from the side. The step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °, and the tip side thereof. A spiral groove is engraved on the outer peripheral surface of the pin, and the spiral angle formed by the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °. While cooling the base member and the lid plate with the cooling plate installed on the back surface side, the tip side pin of the rotating tool for main joining is inserted into the butt portion, and the outer peripheral surface of the base end side pin is inserted. Is characterized by performing frictional stirring in a state of being in contact with the base member and the lid plate.

また、本発明は、ベース部材の表面に開口する凹溝又は凹部を覆うように、前記ベース部材の表面に蓋板を重ね合わせる閉塞工程と、前記蓋板の表面から基端側ピンと先端側ピンとを備えた本接合用回転ツールを挿入し、前記ベース部材の表面と前記蓋板の裏面との重合部に沿って前記本接合用回転ツールを相対移動させる本接合工程と、を含み、前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、前記本接合工程では、前記ベース部材の裏面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記蓋板の表面に挿入し、前記基端側ピンの外周面を前記蓋板の表面に接触させつつ、前記先端側ピンを前記ベース部材と前記蓋板の両方、又は、前記蓋板のみに接触させた状態で前記重合部の摩擦攪拌を行うことを特徴とする。 Further, the present invention comprises a closing step of superimposing a lid plate on the surface of the base member so as to cover a concave groove or a recess opened on the surface of the base member, and a base end side pin and a tip end side pin from the surface of the lid plate. The present bonding step including the main joining step of inserting the main joining rotation tool provided with the above-mentioned and relatively moving the main joining rotation tool along the overlapping portion between the front surface of the base member and the back surface of the lid plate. The taper angle of the base end side pin of the joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin, and the outer peripheral surface of the base end side pin has a spiral shape. When viewed from the side, a stepped step portion is formed, and the step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °, and the outer peripheral surface of the tip side pin has a step portion. A spiral groove is engraved, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °, and in the main joining step, it is installed on the back surface side of the base member. While cooling the base member and the lid plate with the cooling plate, the tip-side pin of the rotating tool for main joining is inserted into the surface of the lid plate, and the outer peripheral surface of the base end-side pin is the outer peripheral surface of the lid plate. It is characterized in that frictional stirring of the polymerized portion is performed in a state where the tip end side pin is in contact with both the base member and the lid plate or only the lid plate while being in contact with the surface.

また、本発明は、ベース部材の表面に開口する凹溝又は凹部を覆うように、前記ベース部材の表面に蓋板を重ね合わせる閉塞工程と、前記ベース部材の裏面から基端側ピンと先端側ピンとを備えた本接合用回転ツールを挿入し、前記ベース部材の表面と前記蓋板の裏面との重合部に沿って前記本接合用回転ツールを相対移動させる本接合工程と、を含み、前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、前記本接合工程では、前記蓋板の表面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記ベース部材の裏面に挿入し、前記基端側ピンの外周面を前記ベース部材の裏面に接触させつつ、前記先端側ピンを前記ベース部材と前記蓋板の両方、又は、前記ベース部材のみに接触させた状態で前記重合部の摩擦攪拌を行うことを特徴とする。 Further, the present invention comprises a closing step of superimposing a lid plate on the surface of the base member so as to cover a concave groove or a recess opening on the surface of the base member, and a base end side pin and a tip end side pin from the back surface of the base member. The present bonding step including the main joining step of inserting the main joining rotation tool provided with the above-mentioned and relatively moving the main joining rotation tool along the overlapping portion between the front surface of the base member and the back surface of the lid plate. The taper angle of the base end side pin of the joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin, and the outer peripheral surface of the base end side pin has a spiral shape. When viewed from the side, a stepped step portion is formed, and the step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °, and the outer peripheral surface of the tip side pin has a step portion. A spiral groove is engraved, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °, and in the main joining step, the spiral groove is installed on the surface side of the lid plate. While cooling the base member and the lid plate with the cooling plate, the tip side pin of the rotating tool for main joining is inserted into the back surface of the base member, and the outer peripheral surface of the base end side pin is the outer peripheral surface of the base member. It is characterized in that frictional stirring of the polymerized portion is performed in a state where the tip end side pin is in contact with both the base member and the lid plate or only the base member while being in contact with the back surface.

また、本発明は、基端側ピンと先端側ピンとを備えた本接合用回転ツールを用いて二つの金属部材を接合する摩擦攪拌接合方法であって、一方の前記金属部材の表面と他方の前記金属部材の裏面とを重ね合わせて重合部を形成する重合部形成工程と、他方の前記金属部材の表面から回転した前記本接合用回転ツールの先端側ピンを挿入し、前記重合部に沿って前記本接合用回転ツールを相対移動させて摩擦攪拌を行う本接合工程と、を含み、前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、前記本接合工程では、一方の前記金属部材の裏面側に設置された冷却板で一方の前記金属部材及び他方の前記金属部材を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを他方の前記金属部材の表面に挿入し、前記基端側ピンの外周面を他方の前記金属部材の表面に接触させつつ、前記先端側ピンを一方の前記金属部材と他方の前記金属部材の両方、又は、他方の前記金属部材のみに接触させた状態で前記重合部の摩擦攪拌を行うことを特徴とする。 Further, the present invention is a friction stirring joining method for joining two metal members by using a rotation tool for joining, which is provided with a base end side pin and a tip end side pin, wherein the surface of one of the metal members and the other of the metal members are joined. The step of forming the polymerized portion by superimposing the back surface of the metal member to form the polymerized portion and the tip end side pin of the rotating tool for main joining rotated from the surface of the other metal member are inserted and along the polymerized portion. The taper angle of the base end side pin of the main joining rotation tool includes the main joining step of relatively moving the main joining rotation tool to perform frictional stirring, and the taper angle is 135 ° to 160 °, and the tip thereof. It is larger than the taper angle of the side pin, and the outer peripheral surface of the base end side pin has a spiral shape, and a stepped step portion is formed when viewed from the side, and the step bottom surface and the step portion of the step portion are formed. The step angle formed by the side surface is 85 ° to 120 °, and a spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove. Is 45 ° to 90 °, and in the main joining step, the book is rotated while cooling one metal member and the other metal member with a cooling plate installed on the back surface side of one metal member. The tip end side pin of the joining rotation tool is inserted into the surface of the other metal member, and the tip end side pin is brought into contact with the surface of the other metal member while the outer peripheral surface of the base end side pin is in contact with the surface of the other metal member. It is characterized in that frictional stirring of the polymerized portion is performed in a state where both the member and the other metal member or only the other metal member are in contact with each other.

かかる方法によれば、テーパー角度の大きい基端側ピンの外周面でベース部材及び蓋板の少なくとも一方、又は金属部材を押えることができるため、接合表面の段差凹溝を小さくすることができるとともに、段差凹溝の脇に形成される膨出部を無くすか若しくは小さくすることができる。階段状の段差部は浅く、かつ、出口が広いため、基端側ピンで金属部材を押えても基端側ピンの外周面に塑性流動材が付着し難い。このため、接合表面粗さを小さくすることができるとともに、接合品質を好適に安定させることができる。また、先端側ピンを備えることにより深い位置まで容易に挿入することができる。さらに、冷却板でベース部材及び蓋板又は金属部材を冷却しながら摩擦攪拌を行うため、伝熱板の変形を抑制することができる。 According to this method, at least one of the base member and the lid plate or the metal member can be pressed by the outer peripheral surface of the base end side pin having a large taper angle, so that the stepped groove on the joint surface can be reduced. , The bulge formed on the side of the stepped groove can be eliminated or reduced. Since the stepped portion is shallow and the outlet is wide, it is difficult for the plastic fluid material to adhere to the outer peripheral surface of the base end side pin even if the metal member is pressed by the base end side pin. Therefore, the roughness of the joint surface can be reduced, and the joint quality can be suitably stabilized. Further, by providing the tip side pin, it can be easily inserted to a deep position. Further, since friction stir welding is performed while cooling the base member and the lid plate or the metal member with the cooling plate, deformation of the heat transfer plate can be suppressed.

また、前記本接合工程の前に、前記突合せ部を仮接合する仮接合工程を含むことが好ましい。また、前記本接合工程の前に、前記重合部を仮接合する仮接合工程を含むことが好ましい。かかる製造方法によれば、本接合工程の際の突合せ部又は重合部の目開きを防止することができる。 Further, it is preferable to include a temporary joining step of temporarily joining the butt portion before the main joining step. Further, it is preferable to include a temporary joining step of temporarily joining the polymerized portion before the main joining step. According to such a manufacturing method, it is possible to prevent the butt portion or the overlapping portion from opening in the main joining step.

また、前記本接合工程の終了後、前記本接合用回転ツールの摩擦攪拌によって生じたバリを切除するバリ切除工程を含むことが好ましい。かかる方法によれば、接合表面をきれいに仕上げることができる。 Further, after the completion of the main joining step, it is preferable to include a burr cutting step of cutting burrs generated by frictional stirring of the main joining rotary tool. According to such a method, the joint surface can be finished cleanly.

本発明に係る伝熱板の製造方法及び摩擦攪拌接合方法によれば、金属部材の表面の段差凹溝を小さくすることができるとともに、接合表面粗さを小さくすることができる。 According to the method for manufacturing a heat transfer plate and the friction stir welding method according to the present invention, it is possible to reduce the stepped groove on the surface of the metal member and to reduce the roughness of the joint surface.

本発明の実施形態に係る接合方法に用いる本接合用回転ツールを示す側面図である。It is a side view which shows the rotation tool for this joining used in the joining method which concerns on embodiment of this invention. 本接合用回転ツールの拡大断面図である。It is an enlarged sectional view of the rotation tool for this joining. 本接合用回転ツールの第一変形例を示す断面図である。It is sectional drawing which shows the 1st modification of this rotation tool for joining. 本接合用回転ツールの第二変形例を示す断面図である。It is sectional drawing which shows the 2nd modification of this rotation tool for joining. 本接合用回転ツールの第三変形例を示す断面図である。It is sectional drawing which shows the 3rd modification of this rotation tool for joining. 本発明の第一実施形態に係る伝熱板を示す斜視図である。It is a perspective view which shows the heat transfer plate which concerns on 1st Embodiment of this invention. 第一実施形態に係る伝熱板の製造方法の準備工程を示す断面図である。It is sectional drawing which shows the preparation process of the manufacturing method of the heat transfer plate which concerns on 1st Embodiment. 第一実施形態に係る伝熱板の製造方法の蓋板挿入工程を示す断面図である。It is sectional drawing which shows the lid plate insertion process of the manufacturing method of the heat transfer plate which concerns on 1st Embodiment. 第一実施形態に係る伝熱板の製造方法のタブ材配置工程を示す平面図である。It is a top view which shows the tab material arrangement process of the manufacturing method of the heat transfer plate which concerns on 1st Embodiment. 第一実施形態に係る伝熱板の製造方法の仮接合工程における冷却板への固定作業を示す斜視図である。It is a perspective view which shows the fixing work to a cooling plate in the temporary joining process of the manufacturing method of the heat transfer plate which concerns on 1st Embodiment. 第一実施形態に係る伝熱板の製造方法を示す断面図であって仮接合工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 1st Embodiment, and shows the temporary joining process. 第一実施形態に係る伝熱板の製造方法を示す断面図であって本接合工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 1st Embodiment, and shows this joining process. 従来の回転ツールを示す概念図である。It is a conceptual diagram which shows the conventional rotation tool. 従来の回転ツールを示す概念図である。It is a conceptual diagram which shows the conventional rotation tool. 本発明の第二実施形態に係る伝熱板の製造方法を示す断面図であって準備工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 2nd Embodiment of this invention, and shows the preparation process. 本発明の第二実施形態に係る伝熱板の製造方法を示す断面図であって蓋板挿入工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 2nd Embodiment of this invention, and shows the lid plate insertion process. 第二実施形態に係る本接合工程を示す断面図である。It is sectional drawing which shows the main joining process which concerns on 2nd Embodiment. 本発明の第三実施形態に係る伝熱板の製造方法を示す断面図であって仮接合工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 3rd Embodiment of this invention, and shows the temporary joining process. 本発明の第三実施形態に係る伝熱板の製造方法を示す断面図であって本接合工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 3rd Embodiment of this invention, and shows this joining process. 本発明の第四実施形態に係る伝熱板の製造方法を示す断面図であって仮接合工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 4th Embodiment of this invention, and shows the temporary joining process. 本発明の第四実施形態に係る伝熱板の製造方法を示す断面図であって本接合工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 4th Embodiment of this invention, and shows this joining process. 本発明の第五実施形態に係る摩擦攪拌接合方法を示す断面図である。It is sectional drawing which shows the friction stir welding method which concerns on 5th Embodiment of this invention. 第五実施形態の変形例を示す断面図である。It is sectional drawing which shows the modification of 5th Embodiment.

本発明の実施形態について、適宜図面を参照しながら説明する。まずは、本実施形態に係る接合方法で用いる本接合用回転ツールおよび仮接合用回転ツールについて説明する。本接合用回転ツールおよび仮接合用回転ツールは、摩擦攪拌接合に用いられるツールである。本実施形態における本接合用回転ツールおよび仮接合用回転ツールは、大きさを除いて同様のものなので、ここでは本接合用回転ツールについて説明を行い、仮接合用回転ツールの説明を省略する。図１に示すように、本接合用回転ツールＦは、例えば工具鋼で形成されており、基軸部Ｆ１と、基端側ピンＦ２と、先端側ピンＦ３とで主に構成されている。基軸部Ｆ１は、円柱状を呈し、摩擦攪拌装置の主軸に接続される部位である。 An embodiment of the present invention will be described with reference to the drawings as appropriate. First, a rotation tool for main joining and a rotation tool for temporary joining used in the joining method according to the present embodiment will be described. The rotation tool for main joining and the rotation tool for temporary joining are tools used for friction stir welding. Since the rotation tool for main joining and the rotation tool for temporary joining in the present embodiment are the same except for the size, the rotation tool for main joining will be described here, and the rotation tool for temporary joining will be omitted. As shown in FIG. 1, the rotary tool F for main joining is formed of, for example, tool steel, and is mainly composed of a base shaft portion F1, a base end side pin F2, and a tip end side pin F3. The base shaft portion F1 has a columnar shape and is a portion connected to the main shaft of the friction stir welder.

基端側ピンＦ２は、基軸部Ｆ１に連続し、先端に向けて先細りになっている。基端側ピンＦ２は、円錐台形状を呈する。基端側ピンＦ２のテーパー角度Ａは適宜設定すればよいが、例えば、１３５～１６０°になっている。テーパー角度Ａが１３５°未満であるか、又は、１６０°を超えると摩擦攪拌後の接合表面粗さが大きくなる。テーパー角度Ａは、後記する先端側ピンＦ３のテーパー角度Ｂよりも大きくなっている。図２に示すように、基端側ピンＦ２の外周面には、階段状の段差部Ｆ２１が高さ方向の全体に亘って形成されている。段差部Ｆ２１は、右回り又は左回りで螺旋状に形成されている。つまり、段差部Ｆ２１は、平面視して螺旋状であり、側面視すると階段状になっている。本実施形態では、本接合用回転ツールＦを右回転させるため、段差部Ｆ２１は基端側から先端側に向けて左回りに設定している。 The base end side pin F2 is continuous with the base shaft portion F1 and is tapered toward the tip end. The proximal end side pin F2 has a truncated cone shape. The taper angle A of the base end side pin F2 may be appropriately set, but is, for example, 135 to 160 °. If the taper angle A is less than 135 ° or exceeds 160 °, the joint surface roughness after friction stir welding becomes large. The taper angle A is larger than the taper angle B of the tip side pin F3 described later. As shown in FIG. 2, a stepped step portion F21 is formed on the outer peripheral surface of the base end side pin F2 over the entire height direction. The step portion F21 is formed in a clockwise or counterclockwise spiral shape. That is, the step portion F21 has a spiral shape when viewed in a plane and a step shape when viewed from a side surface. In the present embodiment, in order to rotate the main joining rotation tool F clockwise, the step portion F21 is set counterclockwise from the base end side to the tip end side.

なお、本接合用回転ツールＦを左回転させる場合は、段差部Ｆ２１を基端側から先端側に向けて右回りに設定することが好ましい。これにより、段差部Ｆ２１によって塑性流動材が先端側に導かれるため、被接合金属部材の外部に溢れ出る金属を低減することができる。段差部Ｆ２１は、段差底面Ｆ２１ａと、段差側面Ｆ２１ｂとで構成されている。隣り合う段差部Ｆ２１の各頂点Ｆ２１ｃ，Ｆ２１ｃの距離Ｘ１（水平方向距離）は、後記する段差角度Ｃ及び段差側面Ｆ２１ｂの高さＹ１に応じて適宜設定される。 When the rotation tool F for main joining is rotated counterclockwise, it is preferable to set the step portion F21 clockwise from the base end side to the tip end side. As a result, the plastic fluid material is guided to the tip side by the step portion F21, so that the metal overflowing to the outside of the metal member to be joined can be reduced. The step portion F21 is composed of a step bottom surface F21a and a step side surface F21b. The distance X1 (horizontal distance) between the vertices F21c and F21c of the adjacent step portions F21 is appropriately set according to the step angle C and the height Y1 of the step side surface F21b, which will be described later.

段差側面Ｆ２１ｂの高さＹ１は適宜設定すればよいが、例えば、０．１～０．４ｍｍで設定されている。高さＹ１が０．１ｍｍ未満であると接合表面粗さが大きくなる。一方、高さＹ１が０．４ｍｍを超えると接合表面粗さが大きくなる傾向があるとともに、有効段差部数（被接合金属部材と接触している段差部Ｆ２１の数）も減少する。 The height Y1 of the step side surface F21b may be appropriately set, but is set to, for example, 0.1 to 0.4 mm. If the height Y1 is less than 0.1 mm, the joint surface roughness becomes large. On the other hand, when the height Y1 exceeds 0.4 mm, the joint surface roughness tends to increase, and the number of effective step portions (the number of step portions F21 in contact with the metal member to be joined) also decreases.

段差底面Ｆ２１ａと段差側面Ｆ２１ｂとでなす段差角度Ｃは適宜設定すればよいが、例えば、８５～１２０°で設定されている。段差底面Ｆ２１ａは、本実施形態では水平面と平行になっている。段差底面Ｆ２１ａは、ツールの回転軸から外周方向に向かって水平面に対して－５°～１５°内の範囲で傾斜していてもよい（マイナスは水平面に対して下方、プラスは水平面に対して上方）。距離Ｘ１、段差側面Ｆ２１ｂの高さＹ１、段差角度Ｃ及び水平面に対する段差底面Ｆ２１ａの角度は、摩擦攪拌を行う際に、塑性流動材が段差部Ｆ２１の内部に滞留して付着することなく外部に抜けるとともに、段差底面Ｆ２１ａで塑性流動材を押えて接合表面粗さを小さくすることができるように適宜設定する。 The step angle C formed by the step bottom surface F21a and the step side surface F21b may be appropriately set, but is set to, for example, 85 to 120 °. The step bottom surface F21a is parallel to the horizontal plane in this embodiment. The step bottom surface F21a may be inclined in the range of -5 ° to 15 ° with respect to the horizontal plane from the rotation axis of the tool toward the outer peripheral direction (minus is downward with respect to the horizontal plane, plus is with respect to the horizontal plane). Above). The distance X1, the height Y1 of the step side surface F21b, the step angle C, and the angle of the step bottom surface F21a with respect to the horizontal plane are such that the plastic fluid material does not stay inside the step portion F21 and adhere to the outside during friction stir welding. It is appropriately set so that the joint surface roughness can be reduced by pressing the plastic fluid material with the step bottom surface F21a while pulling out.

図１に示すように、先端側ピンＦ３は、基端側ピンＦ２に連続して形成されている。先端側ピンＦ３は円錐台形状を呈する。先端側ピンＦ３の先端は平坦面になっている。先端側ピンＦ３のテーパー角度Ｂは、基端側ピンＦ２のテーパー角度Ａよりも小さくなっている。図２に示すように、先端側ピンＦ３の外周面には、螺旋溝Ｆ３１が刻設されている。螺旋溝Ｆ３１は、右回り、左回りのどちらでもよいが、本実施形態では本接合用回転ツールＦを右回転させるため、基端側から先端側に向けて左回りに刻設されている。 As shown in FIG. 1, the distal end side pin F3 is continuously formed on the proximal end side pin F2. The tip side pin F3 has a truncated cone shape. The tip of the tip side pin F3 has a flat surface. The taper angle B of the tip end side pin F3 is smaller than the taper angle A of the proximal end side pin F2. As shown in FIG. 2, a spiral groove F31 is engraved on the outer peripheral surface of the tip side pin F3. The spiral groove F31 may be clockwise or counterclockwise, but in the present embodiment, the spiral groove F31 is carved counterclockwise from the base end side to the tip end side in order to rotate the main joining rotation tool F clockwise.

なお、本接合用回転ツールＦを左回転させる場合は、螺旋溝Ｆ３１を基端側から先端側に向けて右回りに設定することが好ましい。これにより、螺旋溝Ｆ３１によって塑性流動材が先端側に導かれるため、被接合金属部材の外部に溢れ出る金属を低減することができる。螺旋溝Ｆ３１は、螺旋底面Ｆ３１ａと、螺旋側面Ｆ３１ｂとで構成されている。隣り合う螺旋溝Ｆ３１の頂点Ｆ３１ｃ，Ｆ３１ｃの距離（水平方向距離）を長さＸ２とする。螺旋側面Ｆ３１ｂの高さを高さＹ２とする。螺旋底面Ｆ３１ａと、螺旋側面Ｆ３１ｂとで構成される螺旋角度Ｄは例えば、４５～９０°で形成されている。螺旋溝Ｆ３１は、被接合金属部材と接触することにより摩擦熱を上昇させるとともに、塑性流動材を先端側に導く役割を備えている。 When the rotation tool F for main joining is rotated counterclockwise, it is preferable to set the spiral groove F31 clockwise from the proximal end side to the distal end side. As a result, the plastic fluid material is guided to the tip side by the spiral groove F31, so that the metal overflowing to the outside of the metal member to be joined can be reduced. The spiral groove F31 is composed of a spiral bottom surface F31a and a spiral side surface F31b. The distance (horizontal distance) between the vertices F31c and F31c of the adjacent spiral grooves F31 is defined as the length X2. The height of the spiral side surface F31b is defined as the height Y2. The spiral angle D composed of the spiral bottom surface F31a and the spiral side surface F31b is formed at, for example, 45 to 90 °. The spiral groove F31 has a role of increasing frictional heat by coming into contact with the metal member to be joined and guiding the plastic fluid material to the tip side.

本接合用回転ツールＦは、適宜設計変更が可能である。図３は、本発明の本接合用回転ツールの第一変形例を示す側面図である。図３に示すように、第一変形例に係る本接合用回転ツールＦＡでは、段差部Ｆ２１の段差底面Ｆ２１ａと段差側面Ｆ２１ｂとのなす段差角度Ｃが８５°になっている。段差底面Ｆ２１ａは、水平面と平行である。このように、段差底面Ｆ２１ａは水平面と平行であるとともに、段差角度Ｃは、摩擦攪拌中に段差部Ｆ２１内に塑性流動材が滞留して付着することなく外部に抜ける範囲で鋭角としてもよい。 The design of the rotary tool F for joining can be changed as appropriate. FIG. 3 is a side view showing a first modification of the rotary tool for joining of the present invention. As shown in FIG. 3, in the rotary tool FA for joining according to the first modification, the step angle C formed by the step bottom surface F21a and the step side surface F21b of the step portion F21 is 85 °. The step bottom surface F21a is parallel to the horizontal plane. As described above, the step bottom surface F21a may be parallel to the horizontal plane, and the step angle C may be an acute angle as long as the plastic fluid material does not stay and adhere to the step portion F21 during friction stir welding and escapes to the outside.

図４は、本発明の本接合用回転ツールの第二変形例を示す側面図である。図４に示すように、第二変形例に係る本接合用回転ツールＦＢでは、段差部Ｆ２１の段差角度Ｃが１１５°になっている。段差底面Ｆ２１ａは水平面と平行になっている。このように、段差底面Ｆ２１ａは水平面と平行であるとともに、段差部Ｆ２１として機能する範囲で段差角度Ｃが鈍角となってもよい。 FIG. 4 is a side view showing a second modification of the rotary tool for joining of the present invention. As shown in FIG. 4, in the main joint rotation tool FB according to the second modification, the step angle C of the step portion F21 is 115 °. The step bottom surface F21a is parallel to the horizontal plane. As described above, the step bottom surface F21a is parallel to the horizontal plane, and the step angle C may be obtuse within the range in which the step bottom surface F21a functions as the step portion F21.

図５は、本発明の本接合用回転ツールの第三変形例を示す側面図である。図５に示すように、第三変形例に係る本接合用回転ツールＦＣでは、段差底面Ｆ２１ａがツールの回転軸から外周方向に向かって水平面に対して１０°上方に傾斜している。段差側面Ｆ２１ｂは、鉛直面と平行になっている。このように、摩擦攪拌中に塑性流動材を押さえることができる範囲で、段差底面Ｆ２１ａがツールの回転軸から外周方向に向かって水平面よりも上方に傾斜するように形成されていてもよい。上記の本接合用回転ツールの第一～第三変形例によっても、下記の実施形態と同等の効果を奏することができる。 FIG. 5 is a side view showing a third modification of the rotary tool for joining of the present invention. As shown in FIG. 5, in the rotary tool FC for joining according to the third modification, the step bottom surface F21a is inclined upward by 10 ° with respect to the horizontal plane from the rotation axis of the tool toward the outer peripheral direction. The step side surface F21b is parallel to the vertical surface. As described above, the step bottom surface F21a may be formed so as to be inclined above the horizontal plane from the rotation axis of the tool toward the outer peripheral direction within a range in which the plastic fluid material can be pressed during friction stir welding. The same effect as that of the following embodiment can be obtained by the first to third modifications of the above-mentioned rotation tool for joining.

［第一実施形態］
次に、本実施形態の伝熱板について説明する。以下の説明における「表面」とは、「裏面」の反対側の面を意味する。図６に示すように、本実施形態に係る伝熱板１は、ベース部材２と、蓋板５とで主に構成されている。ベース部材２は、略直方体を呈する。ベース部材２には、凹溝３と、蓋溝４とが形成されている。ベース部材２及び蓋板５の材料は摩擦攪拌可能であれば特に制限されないが、本実施形態ではアルミニウム合金である。ベース部材２は、例えば、蓋板５よりも硬度の高い材種で形成されている。 [First Embodiment]
Next, the heat transfer plate of this embodiment will be described. In the following description, the "front surface" means the surface opposite to the "back surface". As shown in FIG. 6, the heat transfer plate 1 according to the present embodiment is mainly composed of a base member 2 and a lid plate 5. The base member 2 exhibits a substantially rectangular parallelepiped. The base member 2 is formed with a concave groove 3 and a lid groove 4. The material of the base member 2 and the lid plate 5 is not particularly limited as long as it can be frictionally agitated, but in the present embodiment, it is an aluminum alloy. The base member 2 is made of, for example, a material having a hardness higher than that of the lid plate 5.

凹溝３は、ベース部材２の中央において、一方の側面から他方の側面に向けて貫通している。凹溝３は、蓋溝４の底面に凹設されている。凹溝３の底部は、円弧状になっている。凹溝３の開口は、ベース部材２の表面２ａ側に開放されている。 The groove 3 penetrates from one side surface toward the other side surface in the center of the base member 2. The concave groove 3 is recessed in the bottom surface of the lid groove 4. The bottom of the groove 3 has an arc shape. The opening of the groove 3 is open to the surface 2a side of the base member 2.

蓋溝４は、凹溝３よりも幅広になっており、凹溝３の表面２ａ側において凹溝３に連続して形成されている。蓋溝４は、断面視矩形を呈し、表面２ａ側に開放されている。 The lid groove 4 is wider than the concave groove 3 and is continuously formed in the concave groove 3 on the surface 2a side of the concave groove 3. The lid groove 4 has a rectangular cross-sectional view and is open to the surface 2a side.

蓋板５は、蓋溝４に挿入される板状部材である。蓋板５は、蓋溝４に隙間無く挿入されるように、蓋溝４の中空部と同じ形状になっている。 The lid plate 5 is a plate-shaped member inserted into the lid groove 4. The lid plate 5 has the same shape as the hollow portion of the lid groove 4 so that it can be inserted into the lid groove 4 without a gap.

蓋溝４の一対の側壁と蓋板５の一対の側面とが突き合わされて突合せ部Ｊ，Ｊが形成される。突合せ部Ｊ，Ｊは、深さ方向に亘って摩擦攪拌により接合されている。伝熱板１の凹溝３と蓋板５の下面とで囲まれた空間が、流体が流通する流路となる。 The pair of side walls of the lid groove 4 and the pair of side surfaces of the lid plate 5 are abutted to form the butted portions J, J. The butt portions J and J are joined by friction stir welding over the depth direction. The space surrounded by the concave groove 3 of the heat transfer plate 1 and the lower surface of the lid plate 5 serves as a flow path for the fluid to flow.

次に、第一実施形態に係る伝熱板の製造方法について説明する。伝熱板の製造方法では、準備工程と、蓋板挿入工程と、タブ材配置工程と、仮接合工程と、本接合工程とを行う。 Next, a method for manufacturing the heat transfer plate according to the first embodiment will be described. In the method for manufacturing a heat transfer plate, a preparation step, a lid plate insertion step, a tab material placement step, a temporary joining step, and a main joining step are performed.

図７Ａに示すように、準備工程は、ベース部材２を用意する工程である。準備工程では、エンドミル等を用いて凹溝３及び蓋溝４を切削加工により形成する。なお、ダイキャスト又は押し出し成形等によって予め凹溝３及び蓋溝４が形成されたベース部材２を用いてもよい。 As shown in FIG. 7A, the preparation step is a step of preparing the base member 2. In the preparatory step, the concave groove 3 and the lid groove 4 are formed by cutting using an end mill or the like. In addition, the base member 2 in which the concave groove 3 and the lid groove 4 are formed in advance by die casting, extrusion molding, or the like may be used.

図７Ｂに示すように、蓋板挿入工程は、蓋溝４に蓋板５を挿入する工程である。蓋溝４の側壁と、蓋板５の側面とがそれぞれ突き合わされて突合せ部Ｊ，Ｊが形成される。蓋板５の上面と表面２ａとは面一になる。 As shown in FIG. 7B, the lid plate inserting step is a step of inserting the lid plate 5 into the lid groove 4. The side wall of the lid groove 4 and the side surface of the lid plate 5 are butted against each other to form the abutting portions J and J. The upper surface of the lid plate 5 and the surface 2a are flush with each other.

図８に示すように、タブ材配置工程は、ベース部材２の側面にタブ材１０，１０を配置する工程である。タブ材１０は、後記する摩擦攪拌の開始位置及び終了位置を設定する部材である。タブ材１０は、ベース部材２の対向する側面に面接触されるとともに、突合せ部Ｊ，Ｊの延長線上に配置される。タブ材１０は、本実施形態では、ベース部材２と同等の材料であるアルミニウム合金で形成されている。タブ材１０は、タブ材１０とベース部材２との入り隅部を溶接することにより接合される。 As shown in FIG. 8, the tab material arranging step is a step of arranging the tab materials 10 and 10 on the side surface of the base member 2. The tab member 10 is a member for setting a start position and an end position of friction stir welding, which will be described later. The tab member 10 is brought into surface contact with the facing side surfaces of the base member 2, and is arranged on an extension of the butt portions J, J. In the present embodiment, the tab material 10 is made of an aluminum alloy which is the same material as the base member 2. The tab member 10 is joined by welding the inside corners of the tab member 10 and the base member 2.

図９に示すように、仮接合工程では、まず、一体となったベース部材２、蓋板５およびタブ材１０，１０をテーブルＫに固定する。テーブルＫは、金属製であって直方体を呈する基板Ｋ１と、基板Ｋ１の四隅に形成されたクランプＫ３と、基板Ｋ１の内部に配設された冷却管ＷＰによって構成されている。テーブルＫは、仮接合工程及び本接合工程の際に、一体となったベース部材２、蓋板５およびタブ材１０，１０を移動不能に拘束するとともに、ベース部材２及び蓋板５を冷却する。つまり、テーブルＫは、特許請求の範囲の「冷却板」として機能する部材である。ここでは、タブ材１０，１０が取り付けられたベース部材２の下にテーブルＫが配置される。 As shown in FIG. 9, in the temporary joining step, first, the integrated base member 2, the lid plate 5, and the tab members 10, 10 are fixed to the table K. The table K is composed of a substrate K1 which is made of metal and exhibits a rectangular parallelepiped, clamps K3 formed at the four corners of the substrate K1, and a cooling tube WP arranged inside the substrate K1. The table K immovably restrains the integrated base member 2, lid plate 5, and tab members 10, 10 during the temporary joining step and the main joining step, and cools the base member 2 and the lid plate 5. .. That is, the table K is a member that functions as a "cooling plate" within the scope of the claims. Here, the table K is arranged under the base member 2 to which the tab members 10 and 10 are attached.

冷却管ＷＰは、基板Ｋ１の内部に埋設される管状部材である。冷却管ＷＰの内部には、基板Ｋ１を冷却する冷却媒体が流通する。冷却管ＷＰの配設位置、つまり、冷却媒体が流れる冷却流路の形状は特に制限されないが、仮接合工程における仮接合用回転ツールＧ及び本接合工程における本接合用回転ツールＦの移動軌跡に沿う平面形状になっている。即ち、平面視した際に、冷却管ＷＰの一部と突合せ部Ｊ，Ｊとが略重なるように冷却管ＷＰが配設されている。 The cooling pipe WP is a tubular member embedded inside the substrate K1. A cooling medium for cooling the substrate K1 flows inside the cooling pipe WP. The arrangement position of the cooling pipe WP, that is, the shape of the cooling flow path through which the cooling medium flows is not particularly limited, but the movement locus of the temporary joining rotation tool G in the temporary joining process and the main joining rotating tool F in the main joining process. It has a flat shape along it. That is, the cooling pipe WP is arranged so that a part of the cooling pipe WP and the butt portions J, J substantially overlap when viewed in a plan view.

図１０Ａに示すように、仮接合工程は、仮接合用回転ツールＧを用いて突合せ部Ｊ，Ｊに対して予備的に摩擦攪拌接合を行う工程である。仮接合用回転ツールＧは、本接合用回転ツールＦと同形状になっており、本接合用回転ツールＦよりも小さくなっている。仮接合工程では、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら摩擦攪拌接合を行う。仮接合工程の開始位置及び終了位置は、ベース部材２及びタブ材１０の表面上であれば特に制限されないが、本実施形態では、タブ材１０の表面に設定している。 As shown in FIG. 10A, the temporary joining step is a step of preliminarily performing friction stir welding with the butt portions J and J using the temporary joining rotary tool G. The temporary joining rotation tool G has the same shape as the main joining rotation tool F, and is smaller than the main joining rotation tool F. In the temporary joining step, a table K that functions as a cooling plate is arranged under the base member 2, and friction stir welding is performed while cooling the base member 2 and the lid plate 5. The start position and end position of the temporary joining process are not particularly limited as long as they are on the surfaces of the base member 2 and the tab material 10, but in the present embodiment, they are set on the surface of the tab material 10.

具体的には、仮接合工程の開始位置を一方のタブ材１０の表面に設定し、一方の突合せ部Ｊの全長に摩擦攪拌接合を行う。仮接合用回転ツールＧの移動軌跡には、塑性化領域Ｗ１が形成される。他方のタブ材１０まで仮接合用回転ツールＧを移動させたら、そのままタブ材１０の表面で折り返させ、他方の突合せ部Ｊの全長に摩擦攪拌接合を行う。仮接合用回転ツールＧを一方のタブ材１０まで移動させたら、タブ材１０から仮接合用回転ツールＧを離脱させる。 Specifically, the start position of the temporary joining process is set on the surface of one of the tab materials 10, and friction stir welding is performed on the entire length of the one butt portion J. A plasticized region W1 is formed in the movement locus of the temporary joining rotation tool G. After moving the temporary joining rotation tool G to the other tab material 10, it is folded back on the surface of the tab material 10 as it is, and friction stir welding is performed on the entire length of the other butt portion J. After moving the temporary joining rotation tool G to one of the tab materials 10, the temporary joining rotation tool G is separated from the tab material 10.

仮接合工程では、基端側ピンＧ２と先端側ピンＧ３とをベース部材２及び蓋板５に接触させた状態で摩擦攪拌接合を行う。回転する仮接合用回転ツールＧの先端側ピンＧ３を突合せ部Ｊに挿入しつつ、基端側ピンＧ２の外周面でベース部材２及び蓋板５を押さえながら摩擦攪拌接合を行う。仮接合用回転ツールＧは、突合せ部Ｊに沿って相対移動させる。基端側ピンＧ２及び先端側ピンＧ３の挿入深さは、基端側ピンＧ２の外周面がベース部材２及び蓋板５を押さえることが可能な範囲で適宜設定すればよい。本実施形態では、基端側ピンＧ２の外周面の高さ方向の中央部あたりがベース部材２及び蓋板５に接触するように設定している。仮接合用回転ツールＧの移動軌跡には、塑性化領域Ｗ１が形成される。 In the temporary joining step, friction stir welding is performed with the base end side pin G2 and the tip end side pin G3 in contact with the base member 2 and the lid plate 5. While inserting the tip side pin G3 of the rotating temporary joining rotation tool G into the butt portion J, friction stir welding is performed while pressing the base member 2 and the lid plate 5 on the outer peripheral surface of the base end side pin G2. The temporary joining rotation tool G is relatively moved along the butt portion J. The insertion depth of the proximal end side pin G2 and the distal end side pin G3 may be appropriately set within a range in which the outer peripheral surface of the proximal end side pin G2 can press the base member 2 and the lid plate 5. In the present embodiment, the center portion of the outer peripheral surface of the base end side pin G2 in the height direction is set to be in contact with the base member 2 and the lid plate 5. A plasticized region W1 is formed in the movement locus of the temporary joining rotation tool G.

図１０Ｂに示すように、本接合工程は、本接合用回転ツールＦを用いて突合せ部Ｊ，Ｊに対して摩擦攪拌接合を行う工程である。本接合工程では、仮接合工程に引き続き、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら摩擦攪拌接合を行う。本接合工程の開始位置及び終了位置は、タブ材１０の表面に設定することが好ましい。本接合用回転ツールＦをタブ材１０に挿入する際には、仮接合用回転ツールＧの抜き孔を利用してもよいし、タブ材１０に別途下穴を設けて、当該下穴から本接合用回転ツールＦを挿入してもよい。 As shown in FIG. 10B, the main joining step is a step of performing friction stir welding to the butt portions J and J using the main joining rotary tool F. In this joining step, following the temporary joining step, a table K that functions as a cooling plate is arranged under the base member 2, and friction stir welding is performed while cooling the base member 2 and the lid plate 5. It is preferable that the start position and the end position of the main joining process are set on the surface of the tab material 10. When inserting the main joining rotation tool F into the tab material 10, a punching hole of the temporary joining rotation tool G may be used, or a pilot hole is separately provided in the tab material 10 and the book is formed from the prepared hole. The joining rotation tool F may be inserted.

本接合工程では、基端側ピンＦ２と先端側ピンＦ３とをベース部材２及び蓋板５に接触させた状態で摩擦攪拌接合を行う。回転する本接合用回転ツールＦの先端側ピンＦ３を突合せ部Ｊに挿入しつつ、基端側ピンＦ２の外周面でベース部材２及び蓋板５を押さえながら摩擦攪拌接合を行う。本接合用回転ツールＦは、突合せ部Ｊに沿って相対移動させる（つまり、仮接合工程で形成された塑性化領域Ｗ１をなぞるようにして移動させる）。基端側ピンＦ２及び先端側ピンＦ３の挿入深さは、基端側ピンＦ２の外周面がベース部材２及び蓋板５を押さえることが可能な範囲で適宜設定すればよい。例えば、基端側ピンＦ２及び先端側ピンＦ３の挿入深さは、基端側ピンＦ２の外周面がベース部材２及び蓋板５を押さえることが可能な範囲であり、かつ、先端側ピンＦ３が蓋溝４に達するように設定してもよい。本実施形態では、基端側ピンＦ２の外周面の高さ方向の中央部あたりがベース部材２及び蓋板５に接触するように設定している。本接合用回転ツールＦの移動軌跡には、塑性化領域Ｗが形成される。突合せ部Ｊと凹溝３との距離は、本接合工程を行った際に、凹溝３に塑性流動材が流入しないように設定することが好ましい。本接合工程が終了したら、タブ材１０をベース部材２から切除する。 In this joining step, friction stir welding is performed with the base end side pin F2 and the tip end side pin F3 in contact with the base member 2 and the lid plate 5. While inserting the tip side pin F3 of the rotating main end side rotation tool F into the butt portion J, friction stir welding is performed while pressing the base member 2 and the lid plate 5 on the outer peripheral surface of the base end side pin F2. The main joining rotation tool F is relatively moved along the butt portion J (that is, moved by tracing the plasticized region W1 formed in the temporary joining step). The insertion depth of the proximal end side pin F2 and the distal end side pin F3 may be appropriately set within a range in which the outer peripheral surface of the proximal end side pin F2 can press the base member 2 and the lid plate 5. For example, the insertion depth of the proximal end side pin F2 and the distal end side pin F3 is within a range in which the outer peripheral surface of the proximal end side pin F2 can hold the base member 2 and the lid plate 5, and the distal end side pin F3. May be set to reach the lid groove 4. In the present embodiment, the center portion of the outer peripheral surface of the base end side pin F2 in the height direction is set to be in contact with the base member 2 and the lid plate 5. A plasticized region W is formed in the movement locus of the rotary tool F for joining. It is preferable that the distance between the butt portion J and the concave groove 3 is set so that the plastic fluid material does not flow into the concave groove 3 when the main joining step is performed. When the main joining step is completed, the tab material 10 is cut off from the base member 2.

なお、本接合工程の終了後、摩擦攪拌によって生じたバリを切除するバリ切除工程を行ってもよい。バリ切除工程を行うことで、ベース部材２及び蓋板５の表面をきれいに仕上げることができる。 After the completion of the main joining step, a burr cutting step of cutting burrs generated by friction stir may be performed. By performing the burr cutting step, the surfaces of the base member 2 and the lid plate 5 can be finished cleanly.

ここで、例えば、図１１Ａに示すように、従来の回転ツール２００であると、ショルダ部で被接合金属部材２１０の表面を押えないため段差凹溝（被接合金属部材の表面と塑性化領域の表面とで構成される段差凹溝）が大きくなるとともに、接合表面粗さが大きくなるという問題がある。また、段差凹溝の脇に膨出部（接合前に比べて被接合金属部材の表面が膨らむ部位）が形成されるという問題がある。一方、図１１Ｂの回転ツール２０１のように、回転ツール２０１のテーパー角度βを回転ツール２００のテーパー角度αよりも大きくすると、回転ツール２００に比べて被接合金属部材２１０の表面を押えることはできるため、段差凹溝は小さくなり、膨出部も小さくなる。しかし、下向きの塑性流動が強くなるため、塑性化領域の下部にキッシングボンドが形成されやすくなる。 Here, for example, as shown in FIG. 11A, in the conventional rotation tool 200, since the surface of the metal member 210 to be joined cannot be pressed by the shoulder portion, the stepped groove (the surface of the metal member to be joined and the plasticized region There is a problem that the stepped groove formed on the surface becomes large and the joint surface roughness becomes large. Further, there is a problem that a bulging portion (a portion where the surface of the metal member to be joined swells as compared with that before joining) is formed on the side of the stepped groove. On the other hand, when the taper angle β of the rotation tool 201 is made larger than the taper angle α of the rotation tool 200 as in the rotation tool 201 of FIG. 11B, the surface of the metal member 210 to be joined can be pressed as compared with the rotation tool 200. Therefore, the stepped groove becomes smaller and the bulging portion becomes smaller. However, since the downward plastic flow becomes stronger, kissing bonds are likely to be formed in the lower part of the plasticized region.

これに対し、本実施形態の本接合用回転ツールＦは、基端側ピンＦ２と、基端側ピンＦ２のテーパー角度Ａよりもテーパー角度が小さい先端側ピンＦ３を備えた構成になっている。これにより、突合せ部Ｊに本接合用回転ツールＦを挿入しやすくなる。また、先端側ピンＦ３のテーパー角度Ｂが小さいため、突合せ部Ｊの深い位置まで本接合用回転ツールＦを容易に挿入することができる。また、先端側ピンＦ３のテーパー角度Ｂが小さいため、回転ツール２０１に比べて下向きの塑性流動を抑えることができる。このため、塑性化領域Ｗの下部にキッシングボンドが形成されるのを防ぐことができる。一方、基端側ピンＦ２のテーパー角度Ａは大きいため、従来の回転ツールに比べ、被接合金属部材の厚さや接合の高さ位置が変化しても安定して接合することができる。 On the other hand, the rotary tool F for main joining of the present embodiment has a configuration including a base end side pin F2 and a tip side pin F3 having a taper angle smaller than the taper angle A of the base end side pin F2. .. This makes it easier to insert the main joining rotation tool F into the butt portion J. Further, since the taper angle B of the tip side pin F3 is small, the rotary tool F for main joining can be easily inserted to a deep position of the butt portion J. Further, since the taper angle B of the tip side pin F3 is small, the downward plastic flow can be suppressed as compared with the rotation tool 201. Therefore, it is possible to prevent the formation of a kissing bond in the lower part of the plasticized region W. On the other hand, since the taper angle A of the base end side pin F2 is large, stable joining can be performed even if the thickness of the metal member to be joined and the height position of the joining change as compared with the conventional rotation tool.

また、基端側ピンＦ２の外周面で塑性流動材を押えることができるため、接合表面に形成される段差凹溝を小さくすることができるとともに、段差凹溝の脇に形成される膨出部を無くすか若しくは小さくすることができる。また、階段状の段差部Ｆ２１は浅く、かつ、出口が広いため、塑性流動材を段差底面Ｆ２１ａで押さえつつ塑性流動材が段差部Ｆ２１の外部に抜けやすくなっている。そのため、基端側ピンＦ２で塑性流動材を押えても基端側ピンＦ２の外周面に塑性流動材が付着し難い。よって、接合表面粗さを小さくすることができるとともに、接合品質を好適に安定させることができる。 Further, since the plastic fluid material can be pressed on the outer peripheral surface of the base end side pin F2, the stepped concave groove formed on the joint surface can be reduced, and the bulging portion formed on the side of the stepped concave groove can be reduced. Can be eliminated or reduced. Further, since the stepped portion F21 is shallow and the outlet is wide, the plastic fluid material is easily pulled out of the step portion F21 while being pressed by the step bottom surface F21a. Therefore, even if the plastic fluid material is pressed by the proximal end side pin F2, it is difficult for the plastic fluid material to adhere to the outer peripheral surface of the proximal end side pin F2. Therefore, the roughness of the joint surface can be reduced, and the joint quality can be suitably stabilized.

また、本接合工程では、必ずしも突合せ部Ｊ，Ｊの深さ方向の全長に亘って摩擦攪拌を行う必要は無いが、突合せ部Ｊの深さの全長に亘って摩擦攪拌すれば、伝熱板１の水密性及び気密性を高めることができる。 Further, in this joining step, it is not always necessary to perform friction stir welding over the entire length of the butt portions J and J in the depth direction. The watertightness and airtightness of 1 can be enhanced.

また、冷却板として機能するテーブルＫでベース部材２及び蓋板５を冷却しながら摩擦攪拌を行うことで、摩擦熱を低減することができる。これにより、熱収縮に起因する伝熱板１の変形を小さくすることができる。また、本実施形態では、平面視した場合に、冷却流路と突合せ部Ｊ，Ｊ（仮接合用回転ツールＧ及び本接合用回転ツールＦの移動軌跡）とが重なるようになっているため、摩擦熱が発生する部分を集中的に冷却できる。これにより、冷却効率を高めることができる。また、冷却管ＷＰを配設して冷却媒体を流通させるため、冷却媒体の管理が容易となる。また、テーブルＫ（冷却板）とベース部材２の裏面２ｂとが面接触するため、冷却効率を高めることができる。 Further, frictional heat can be reduced by performing friction stir while cooling the base member 2 and the lid plate 5 with the table K that functions as a cooling plate. As a result, the deformation of the heat transfer plate 1 due to heat shrinkage can be reduced. Further, in the present embodiment, the cooling flow path and the butt portions J, J (movement loci of the temporary joining rotation tool G and the main joining rotation tool F) overlap with each other when viewed in a plan view. The part where frictional heat is generated can be cooled intensively. Thereby, the cooling efficiency can be improved. Further, since the cooling pipe WP is arranged and the cooling medium is circulated, the cooling medium can be easily managed. Further, since the table K (cooling plate) and the back surface 2b of the base member 2 are in surface contact with each other, the cooling efficiency can be improved.

また、仮接合工程を行うことで、本接合工程を行う際に、ベース部材２と蓋板５との目開きを防ぐことができる。また、仮接合工程及び本接合工程では、摩擦攪拌の途中で仮接合用回転ツールＧ及び本接合用回転ツールＦをベース部材２から離脱させず、一筆書きの要領で各回転ツールを移動させるため、作業手間を少なくすることができる。 Further, by performing the temporary joining step, it is possible to prevent the base member 2 and the lid plate 5 from opening when the main joining step is performed. Further, in the temporary joining step and the main joining step, the temporary joining rotation tool G and the main joining rotation tool F are not separated from the base member 2 during friction stirring, and each rotation tool is moved in the manner of one stroke. , The work effort can be reduced.

なお、仮接合工程では、仮接合用回転ツールＧによる塑性化領域Ｗ１が断続的に形成されるように不連続に摩擦攪拌を行ってもよい。また、仮接合工程では、溶接によって突合せ部Ｊ，Ｊを接合してもよい。また、タブ材１０とベース部材２とを仮接合用回転ツールＧを用いて仮接合してもよい。 In the temporary joining step, friction stirring may be performed discontinuously so that the plasticized region W1 by the temporary joining rotation tool G is intermittently formed. Further, in the temporary joining step, the butt portions J and J may be joined by welding. Further, the tab member 10 and the base member 2 may be temporarily joined by using the temporary joining rotation tool G.

〔第二実施形態〕
次に、本発明の第二実施形態について説明する。第二実施形態に係る伝熱板は、熱媒体用管６を備えている点で第一実施形態と相違する。熱媒体用管６は、その内部に流体が流通する部材である。 [Second Embodiment]
Next, a second embodiment of the present invention will be described. The heat transfer plate according to the second embodiment is different from the first embodiment in that the heat transfer plate 6 is provided. The heat medium tube 6 is a member through which a fluid flows.

第二実施形態に係る伝熱板の製造方法では、準備工程と、熱媒体用管挿入工程と、蓋板挿入工程と、仮接合工程と、本接合工程とを行う。 In the method for manufacturing a heat transfer plate according to the second embodiment, a preparation step, a heat medium tube insertion step, a lid plate insertion step, a temporary joining step, and a main joining step are performed.

図１２Ａに示すように、準備工程は、ベース部材２を用意する工程である。 As shown in FIG. 12A, the preparation step is a step of preparing the base member 2.

図１２Ｂに示すように、熱媒体用管挿入工程は、凹溝３に熱媒体用管６を挿入する工程である。凹溝３及び熱媒体用管６の大きさ等は適宜設定すればよいが、本実施形態では、熱媒体用管６の外径と、凹溝３の幅及び深さは略同等になっている。 As shown in FIG. 12B, the heat medium tube insertion step is a step of inserting the heat medium tube 6 into the concave groove 3. The sizes of the concave groove 3 and the heat medium tube 6 may be appropriately set, but in the present embodiment, the outer diameter of the heat medium tube 6 and the width and depth of the concave groove 3 are substantially the same. There is.

蓋板挿入工程は、蓋溝４に蓋板５を挿入する工程である。蓋溝４の側壁と蓋板５の側面とが突き合わされて突合せ部Ｊが形成される。蓋溝４に蓋板５を挿入すると、熱媒体用管６と蓋板５とが接触するとともに、ベース部材２の表面２ａと蓋板５の上面とは面一になる。 The lid plate inserting step is a step of inserting the lid plate 5 into the lid groove 4. The side wall of the lid groove 4 and the side surface of the lid plate 5 are abutted to form a butt portion J. When the lid plate 5 is inserted into the lid groove 4, the heat medium tube 6 and the lid plate 5 come into contact with each other, and the surface 2a of the base member 2 and the upper surface of the lid plate 5 are flush with each other.

仮接合工程は、突合せ部Ｊ，Ｊに対して予備的に接合を行う工程である。仮接合工程は、第一実施形態と同じように、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら摩擦攪拌接合を行う。 The temporary joining step is a step of preliminarily joining the butt portions J and J. In the temporary joining step, as in the first embodiment, a table K that functions as a cooling plate is arranged under the base member 2, and friction stir welding is performed while cooling the base member 2 and the lid plate 5.

図１３に示すように、本接合工程は、本接合用回転ツールＦを用いて突合せ部Ｊ，Ｊに対して摩擦攪拌接合を行う工程である。本接合工程は、第一実施形態と同じように、仮接合工程に引き続き、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら摩擦攪拌接合を行う。本接合用回転ツールＦの移動軌跡には、塑性化領域Ｗ，Ｗが形成される。塑性化領域Ｗは、突合せ部Ｊ，Ｊの深さ方向に亘って形成される。 As shown in FIG. 13, the main joining step is a step of performing friction stir welding to the butt portions J and J by using the main joining rotary tool F. In this joining step, as in the first embodiment, following the temporary joining step, a table K that functions as a cooling plate is arranged under the base member 2, and friction is performed while cooling the base member 2 and the lid plate 5. Perform friction stir welding. Plasticized regions W and W are formed in the movement locus of the rotary tool F for joining. The plasticized region W is formed over the depth direction of the butt portions J and J.

第二実施形態に係る伝熱板の製造方法によっても第一実施形態と略同等の効果を奏することができる。また、熱媒体用管６を備えた伝熱板１Ａを容易に製造することができる。 The effect of substantially the same as that of the first embodiment can be obtained by the method of manufacturing the heat transfer plate according to the second embodiment. Further, the heat transfer plate 1A provided with the heat medium tube 6 can be easily manufactured.

また、例えば、第一実施形態及び第二実施形態に係る凹溝３、蓋溝４、蓋板５及び熱媒体用管６の形状は、あくまで例示であって、他の形状であってもよい。また、本接合工程後に、ベース部材２の表面２ａと塑性化領域Ｗの表面との間に段差が生じた場合は、当該段差を埋めるように肉盛り溶接を行ってもよい。もしくは、塑性化領域Ｗの表面に金属部材を配置し、当該金属部材とベース部材２とを本接合用回転ツールＦで摩擦攪拌接合してもよい。 Further, for example, the shapes of the concave groove 3, the lid groove 4, the lid plate 5, and the heat medium tube 6 according to the first embodiment and the second embodiment are merely examples, and may be other shapes. .. Further, if a step is generated between the surface 2a of the base member 2 and the surface of the plasticized region W after the main joining step, overlay welding may be performed so as to fill the step. Alternatively, a metal member may be arranged on the surface of the plasticized region W, and the metal member and the base member 2 may be friction-stir welded by the rotary tool F for main joining.

また、本実施形態では、蓋溝４を設ける場合を例示したが、蓋溝４を設けず、凹溝３に直接蓋板５を挿入するようにしてもよい。 Further, in the present embodiment, the case where the lid groove 4 is provided is illustrated, but the lid plate 5 may be inserted directly into the concave groove 3 without providing the lid groove 4.

また、図１３に示すように、熱媒体用管６の周囲に空隙部Ｑが形成されている場合、本接合工程によって、この空隙部Ｑを埋めてもよい。蓋板挿入工程において、蓋溝４に蓋板５を挿入すると、凹溝３、蓋板５の下面及び熱媒体用管６によって空隙部Ｑが形成される。突合せ部Ｊ，Ｊの位置を熱媒体用管６に近接させるとともに、本接合工程では、本接合用回転ツールＦによって形成された塑性流動材を空隙部Ｑに流入させる。これにより、熱媒体用管６の周囲の空隙部Ｑが金属で充填されるため、水密性及び気密性をより高めることができる。 Further, as shown in FIG. 13, when the gap portion Q is formed around the heat medium tube 6, the gap portion Q may be filled by this joining step. When the lid plate 5 is inserted into the lid groove 4 in the lid plate inserting step, the gap portion Q is formed by the concave groove 3, the lower surface of the lid plate 5, and the heat medium tube 6. The positions of the butt portions J and J are brought close to the heat medium tube 6, and in the main joining step, the plastic fluid material formed by the main joining rotary tool F is made to flow into the gap portion Q. As a result, the gap Q around the heat medium tube 6 is filled with metal, so that the watertightness and airtightness can be further improved.

〔第三実施形態〕
次に、本発明の第三実施形態について説明する。第三実施形態に係る伝熱板の製造方法は、ベース部材２に蓋溝４が形成されておらず、ベース部材２の表面２ａに蓋板５を載置する点で第一実施形態と相違する。 [Third Embodiment]
Next, a third embodiment of the present invention will be described. The method for manufacturing the heat transfer plate according to the third embodiment is different from the first embodiment in that the lid groove 4 is not formed on the base member 2 and the lid plate 5 is placed on the surface 2a of the base member 2. do.

第三実施形態に係る伝熱板の製造方法では、準備工程と、凹溝閉塞工程と、仮接合工程と、本接合工程とを行う。 In the method for manufacturing a heat transfer plate according to the third embodiment, a preparation step, a concave groove closing step, a temporary joining step, and a main joining step are performed.

図１４Ａに示すように、準備工程は、ベース部材２を用意する工程である。ベース部材２の表面２ａに凹溝３を形成する。 As shown in FIG. 14A, the preparation step is a step of preparing the base member 2. A concave groove 3 is formed on the surface 2a of the base member 2.

凹溝閉塞工程（閉塞工程）は、ベース部材２の表面２ａに蓋板５を載置して凹溝３の上方を覆う工程である。凹溝閉塞工程では、ベース部材２の表面２ａと蓋板５の裏面５ｂとが重ね合わされて重合部Ｊ１が形成される。 The concave groove closing step (closing step) is a step of placing the lid plate 5 on the surface 2a of the base member 2 and covering the upper part of the concave groove 3. In the groove closing step, the front surface 2a of the base member 2 and the back surface 5b of the lid plate 5 are overlapped to form the superposed portion J1.

仮接合工程は、重合部Ｊ１に対して予備的に接合を行う工程である。仮接合工程では、第一実施形態と同じように、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら仮接合を行う。仮接合工程は、本実施形態では、ベース部材２及び蓋板５の側面から仮接合用回転ツールＧを挿入し、重合部Ｊ１に対して摩擦攪拌接合を行う。仮接合工程後には、ベース部材２及び蓋板５の側面には、塑性化領域Ｗ１が形成される。 The temporary joining step is a step of preliminarily joining the polymerized portion J1. In the temporary joining step, as in the first embodiment, a table K that functions as a cooling plate is arranged under the base member 2, and temporary joining is performed while cooling the base member 2 and the lid plate 5. In the temporary joining step, in the present embodiment, the temporary joining rotation tool G is inserted from the side surfaces of the base member 2 and the lid plate 5, and friction stir welding is performed with respect to the polymerization portion J1. After the temporary joining step, a plasticized region W1 is formed on the side surfaces of the base member 2 and the lid plate 5.

図１４Ｂに示すように、本接合工程は、本接合用回転ツールＦを用いて重合部Ｊ１に対して摩擦攪拌接合を行う工程である。本接合工程は、仮接合工程に引き続き、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら摩擦攪拌接合を行う。回転する本接合用回転ツールＦの先端側ピンＦ３を蓋板５の表面５ａから挿入して、凹溝３の長手方向に沿って本接合用回転ツールＦを相対移動させて重合部Ｊ１を摩擦攪拌接合する。凹溝３に塑性流動材が流入しないように、本接合用回転ツールＦの移動ルートを設定する。なお、本接合用回転ツールＦの移動ルートは、冷却管ＷＰの配設位置に沿うものであるのがよい。即ち、平面視した際に、冷却管ＷＰの一部と本接合工程における本接合用回転ツールＦの移動軌跡とが略重なるのがよい。 As shown in FIG. 14B, the main joining step is a step of performing friction stir welding to the polymerized portion J1 using the main joining rotary tool F. In this joining step, following the temporary joining step, a table K that functions as a cooling plate is arranged under the base member 2, and friction stir welding is performed while cooling the base member 2 and the lid plate 5. The tip side pin F3 of the rotating main joining rotation tool F is inserted from the surface 5a of the lid plate 5, and the main joining rotation tool F is relatively moved along the longitudinal direction of the concave groove 3 to rub the superposed portion J1. Friction stir welding. The movement route of the rotary tool F for main joining is set so that the plastic fluid material does not flow into the groove 3. The movement route of the rotary tool F for joining is preferably along the arrangement position of the cooling pipe WP. That is, when viewed in a plan view, it is preferable that a part of the cooling pipe WP and the movement locus of the main joining rotation tool F in the main joining step substantially overlap.

本接合工程では、基端側ピンＦ２の外周面で蓋板５の表面５ａを押さえながら摩擦攪拌接合を行う。本接合工程では、基端側ピンＦ２を蓋板５に接触させつつ、先端側ピンＦ３をベース部材２及び蓋板５の両方に接触させた状態で摩擦攪拌接合を行う。基端側ピンＦ２及び先端側ピンＦ３の挿入深さは、基端側ピンＦ２の外周面が蓋板５の表面５ａを押さえることが可能な範囲で適宜設定すればよい。本実施形態では、基端側ピンＦ２の外周面の高さ方向の中央部あたりを蓋板５の表面５ａに接触させつつ、先端側ピンＦ３がベース部材２に接触するように設定する。このようにしても、第一実施形態と略同等の効果を得ることができる。 In this joining step, friction stir welding is performed while pressing the surface 5a of the lid plate 5 on the outer peripheral surface of the base end side pin F2. In this joining step, friction stir welding is performed in a state where the base end side pin F2 is in contact with the lid plate 5 and the tip end side pin F3 is in contact with both the base member 2 and the lid plate 5. The insertion depth of the proximal end side pin F2 and the distal end side pin F3 may be appropriately set within a range in which the outer peripheral surface of the proximal end side pin F2 can press the surface 5a of the lid plate 5. In the present embodiment, the tip end side pin F3 is set to be in contact with the base member 2 while the base end side pin F2 is in contact with the surface 5a of the lid plate 5 around the center portion in the height direction of the outer peripheral surface. Even in this way, it is possible to obtain an effect substantially equivalent to that of the first embodiment.

第三実施形態に係る伝熱板の製造方法のように、蓋溝４を設けず、ベース部材２の表面２ａに板厚の大きい蓋板５を載置する形態であっても、伝熱板１Ｂを容易に製造することができる。また、仮接合工程を行うことで、本接合工程を行う際に、ベース部材２と蓋板５との目開きを防ぐことができる。 Even in the form in which the lid groove 4 is not provided and the lid plate 5 having a large plate thickness is placed on the surface 2a of the base member 2, as in the method for manufacturing the heat transfer plate according to the third embodiment, the heat transfer plate 1B can be easily manufactured. Further, by performing the temporary joining step, it is possible to prevent the base member 2 and the lid plate 5 from opening when the main joining step is performed.

また、冷却板として機能するテーブルＫでベース部材２及び蓋板５を冷却しながら摩擦攪拌を行うことで、摩擦熱を低減することができる。これにより、熱収縮に起因する伝熱板１Ｂの変形を小さくすることができる。また、本実施形態では、平面視した場合に、冷却流路と本接合工程における本接合用回転ツールＦの移動軌跡とが重なるようになっているため、摩擦熱が発生する部分を集中的に冷却できる。これにより、冷却効率を高めることができる。また、冷却管ＷＰを配設して冷却媒体を流通させるため、冷却媒体の管理が容易となる。また、テーブルＫ（冷却板）とベース部材２の裏面２ｂとが面接触するため、冷却効率を高めることができる。 Further, frictional heat can be reduced by performing friction stir while cooling the base member 2 and the lid plate 5 with the table K that functions as a cooling plate. As a result, the deformation of the heat transfer plate 1B due to heat shrinkage can be reduced. Further, in the present embodiment, since the cooling flow path and the movement locus of the main joining rotation tool F in the main joining process overlap when viewed in a plan view, the portion where frictional heat is generated is concentrated. Can be cooled. Thereby, the cooling efficiency can be improved. Further, since the cooling pipe WP is arranged and the cooling medium is circulated, the cooling medium can be easily managed. Further, since the table K (cooling plate) and the back surface 2b of the base member 2 are in surface contact with each other, the cooling efficiency can be improved.

なお、仮接合工程では、仮接合用回転ツールＧによる塑性化領域Ｗ１が断続的に形成されるように不連続に摩擦攪拌を行ってもよい。また、仮接合工程では、溶接によって重合部Ｊ１を接合してもよい。また、第一実施形態のようにタブ材を用いて仮接合工程及び本接合工程を行ってもよい。 In the temporary joining step, friction stirring may be performed discontinuously so that the plasticized region W1 by the temporary joining rotation tool G is intermittently formed. Further, in the temporary joining step, the polymerized portion J1 may be joined by welding. Further, the temporary joining step and the main joining step may be performed using the tab material as in the first embodiment.

また、本実施形態の本接合工程では、先端側ピンＦ３の先端が、ベース部材２に達する位置まで押し込むように設定したが、ベース部材２に達しないように設定する、つまり、基端側ピンＦ２及び先端側ピンＦ３の両方が蓋板５のみと接触するように挿入深さを設定してもよい。このような場合は、基端側ピンＦ２及び先端側ピンＦ３と蓋板５との接触によって生じた摩擦熱で、重合部Ｊ１が塑性流動化されることにより、重合部Ｊ１が接合される。 Further, in the main joining step of the present embodiment, the tip of the tip side pin F3 is set to be pushed to the position where it reaches the base member 2, but it is set so as not to reach the base member 2, that is, the base end side pin. The insertion depth may be set so that both F2 and the tip side pin F3 come into contact with only the lid plate 5. In such a case, the polymerization portion J1 is joined by plastically fluidizing the polymerization portion J1 by the frictional heat generated by the contact between the base end side pin F2 and the tip end side pin F3 and the lid plate 5.

また、本実施形態の本接合工程では、蓋板５の表面５ａから本接合用回転ツールＦを挿入したが、ベース部材２の裏面２ｂから本接合用回転ツールＦを挿入して、重合部Ｊ１を摩擦攪拌するようにしてもよい。この場合には、蓋板５の上に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら本接合を行う。このような場合であっても、先端側ピンＦ３を、ベース部材２及び蓋板５の両方と接触する位置まで押し込んでもよいし、ベース部材２のみと接触する位置まで押し込んで、重合部Ｊ１を摩擦攪拌するように設定してもよい。 Further, in the main joining step of the present embodiment, the main joining rotation tool F is inserted from the front surface 5a of the lid plate 5, but the main joining rotation tool F is inserted from the back surface 2b of the base member 2, and the overlapping portion J1 is inserted. May be rubbed and agitated. In this case, a table K that functions as a cooling plate is arranged on the lid plate 5, and the main joining is performed while cooling the base member 2 and the lid plate 5. Even in such a case, the tip side pin F3 may be pushed to a position where it comes into contact with both the base member 2 and the lid plate 5, or it may be pushed to a position where it comes into contact with only the base member 2 to push the overlapping portion J1. It may be set to agitate by friction.

〔第四実施形態〕
次に、本発明の第四実施形態について説明する。第四実施形態に係る伝熱板の製造方法は、大きな窪みを備えた凹部２０が形成されている点で第三実施形態と相違する。 [Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. The method for manufacturing a heat transfer plate according to the fourth embodiment is different from the third embodiment in that a recess 20 having a large recess is formed.

第四実施形態に係る伝熱板の製造方法は、準備工程と、凹部閉塞工程と、仮接合工程と、本接合工程とを行う。 The method for manufacturing the heat transfer plate according to the fourth embodiment includes a preparation step, a recess closing step, a temporary joining step, and a main joining step.

図１５Ａに示すように、準備工程は、ベース部材２を用意する工程である。ベース部材２の表面２ａに凹部２０を形成する。凹部２０は、凹溝３よりも十分に広い窪みとなっている。 As shown in FIG. 15A, the preparation step is a step of preparing the base member 2. A recess 20 is formed on the surface 2a of the base member 2. The recess 20 is a recess sufficiently wider than the recess 3.

凹部閉塞工程（閉塞工程）は、ベース部材２の表面２ａに蓋板５を載置して凹部２０の上方を覆う工程である。凹部閉塞工程では、ベース部材２の表面２ａと蓋板５の裏面５ｂとが重ね合わされて重合部Ｊ１が形成される。 The recess closing step (closing step) is a step of placing the lid plate 5 on the surface 2a of the base member 2 and covering the upper part of the recess 20. In the recess closing step, the front surface 2a of the base member 2 and the back surface 5b of the lid plate 5 are overlapped to form the overlapping portion J1.

図１５Ａ，図１５Ｂに示すように、仮接合工程および本接合工程では、第三実施形態と同じように、ベース部材２の下に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら仮接合および本接合を行う。仮接合工程及び本接合工程は、第三実施形態と同等であるため、詳細な説明は省略する。これにより、伝熱板１Ｃが形成される。 As shown in FIGS. 15A and 15B, in the temporary joining step and the main joining step, as in the third embodiment, the table K that functions as a cooling plate is arranged under the base member 2, and the base member 2 and the base member 2 and the table K are arranged. Temporary joining and main joining are performed while cooling the lid plate 5. Since the temporary joining step and the main joining step are the same as those in the third embodiment, detailed description thereof will be omitted. As a result, the heat transfer plate 1C is formed.

第四実施形態に係る伝熱板の製造方法では、第三実施形態と略同等の効果を奏することができる。また、第四実施形態によれば、凹溝３よりも大きな凹部２０を備えるとともに板厚の大きい蓋板５を載置する場合であっても、伝熱板１Ｃを容易に形成することができる。 The method for manufacturing a heat transfer plate according to the fourth embodiment can achieve substantially the same effect as that of the third embodiment. Further, according to the fourth embodiment, the heat transfer plate 1C can be easily formed even when the recess 20 larger than the concave groove 3 is provided and the lid plate 5 having a large plate thickness is placed. ..

なお、本実施形態の本接合工程では、先端側ピンＦ３の先端が、ベース部材２に達する位置まで押し込むように設定したが、ベース部材２に達しないように設定する、つまり、基端側ピンＦ２及び先端側ピンＦ３と蓋板５のみとが接触する位置まで押し込み、重合部Ｊ１を摩擦攪拌するように設定してもよい。このような場合は、基端側ピンＦ２及び先端側ピンＦ３と蓋板５との接触によって生じた摩擦熱で、ベース部材２及び蓋板５が塑性流動化されることにより、重合部Ｊ１が接合される。 In the main joining step of the present embodiment, the tip of the tip side pin F3 is set to be pushed to the position where it reaches the base member 2, but it is set so as not to reach the base member 2, that is, the base end side pin. The polymerized portion J1 may be set to be frictionally agitated by pushing it to a position where only the F2 and the tip side pin F3 and the lid plate 5 come into contact with each other. In such a case, the base member 2 and the lid plate 5 are plastically fluidized by the frictional heat generated by the contact between the base end side pin F2 and the tip end side pin F3 and the lid plate 5, so that the polymerization portion J1 is formed. Be joined.

また、本実施形態の本接合工程では、蓋板５の表面５ａから本接合用回転ツールＦを挿入したが、ベース部材２の裏面２ｂから本接合用回転ツールＦを挿入して、重合部Ｊ１を摩擦攪拌するようにしてもよい。この場合には、蓋板５の上に冷却板として機能するテーブルＫを配置して、ベース部材２及び蓋板５を冷却しながら本接合を行う。この場合であっても、先端側ピンＦ３は、ベース部材２及び蓋板５の両方と接触する位置まで押し込んでもよいし、ベース部材２のみと接触する位置まで押し込んで、摩擦攪拌するように設定してもよい。 Further, in the main joining step of the present embodiment, the main joining rotation tool F is inserted from the front surface 5a of the lid plate 5, but the main joining rotation tool F is inserted from the back surface 2b of the base member 2, and the overlapping portion J1 is inserted. May be rubbed and agitated. In this case, a table K that functions as a cooling plate is arranged on the lid plate 5, and the main joining is performed while cooling the base member 2 and the lid plate 5. Even in this case, the tip side pin F3 may be pushed to a position where it comes into contact with both the base member 2 and the lid plate 5, or is pushed to a position where it comes into contact with only the base member 2 and is set to be frictionally agitated. You may.

〔第五実施形態〕
次に、本発明の第五実施形態に係る摩擦攪拌接合方法について説明する。第五実施形態では、凹溝３や凹部２０等の流路を備えていない金属部材同士を接合する点で他の実施形態と相違する。 [Fifth Embodiment]
Next, the friction stir welding method according to the fifth embodiment of the present invention will be described. The fifth embodiment is different from the other embodiments in that metal members having no flow path such as the concave groove 3 and the concave portion 20 are joined to each other.

第五実施形態に係る摩擦攪拌接合方法では、準備工程と、重ね合わせ工程（重合部形成工程）と、仮接合工程と、本接合工程とを行う。 In the friction stir welding method according to the fifth embodiment, a preparation step, a superposition step (polymerization portion forming step), a temporary joining step, and a main joining step are performed.

図１６に示すように、準備工程は、金属部材３１，３２を用意する工程である。金属部材３１，３２は、板状の金属部材である。金属部材３１，３２の種類は、摩擦攪拌可能な金属から適宜選択すればよい。例えば、本接合用回転ツールＦが挿入される金属部材３２の材種は、金属部材３１よりも硬度の低い材種としてもよい。 As shown in FIG. 16, the preparation step is a step of preparing the metal members 31, 32. The metal members 31 and 32 are plate-shaped metal members. The types of the metal members 31 and 32 may be appropriately selected from the metals capable of friction stir welding. For example, the grade of the metal member 32 into which the rotary tool F for joining is inserted may be a grade having a hardness lower than that of the metal member 31.

重ね合わせ工程（重合部形成工程）は、金属部材３１，３２を重ね合わせる工程である。重ね合わせ工程では、金属部材３１の表面３１ａに、金属部材３２の裏面３２ｂを重ね合わせて、重合部Ｊ１を形成する。 The superposition step (polymerization portion forming step) is a step of superimposing the metal members 31, 32. In the superposition step, the back surface 32b of the metal member 32 is superposed on the front surface 31a of the metal member 31 to form the superposition portion J1.

仮接合工程は、重合部Ｊ１に対して予備的に接合を行う工程である。仮接合工程では、金属部材３１の下に冷却板として機能するテーブルＫを配置して、金属部材３１，３２を冷却しながら仮接合を行う。仮接合工程は、本実施形態では、金属部材３１，３２の側面から仮接合用回転ツールＧを挿入し、重合部Ｊ１に対して摩擦攪拌接合を行う。仮接合工程後には、金属部材３１，３２の側面には、塑性化領域Ｗ１が形成される。 The temporary joining step is a step of preliminarily joining the polymerized portion J1. In the temporary joining step, a table K that functions as a cooling plate is arranged under the metal member 31, and temporary joining is performed while cooling the metal members 31 and 32. In the temporary joining step, in the present embodiment, the temporary joining rotation tool G is inserted from the side surface of the metal members 31 and 32, and friction stir welding is performed with respect to the polymerization portion J1. After the temporary joining step, a plasticized region W1 is formed on the side surfaces of the metal members 31 and 32.

本接合工程は、本接合用回転ツールＦを用いて重合部Ｊ１に対して摩擦攪拌接合を行う工程である。本接合工程は、仮接合工程に引き続き、金属部材３１の下に冷却板として機能するテーブルＫを配置して、金属部材３１，３２を冷却しながら摩擦攪拌接合を行う。回転する本接合用回転ツールＦの先端側ピンＦ３を金属部材３２の表面３２ａから挿入して、本接合用回転ツールＦを相対移動させて重合部Ｊ１を摩擦攪拌接合する。本接合工程では、基端側ピンＦ２の外周面で金属部材３２の表面３２ａを押さえながら摩擦攪拌接合を行う。本接合工程では、基端側ピンＦ２を金属部材３２に接触させつつ、先端側ピンＦ３を金属部材３１，３２の両方に接触させた状態（先端側ピンＦ３の先端が金属部材３１に入り込んだ状態）で摩擦攪拌接合を行う。これにより、複合板１Ｄが形成される。なお、本接合用回転ツールＦの移動ルートは、冷却管ＷＰの配設位置に沿うものであるのがよい。即ち、平面視した際に、冷却管ＷＰの一部と本接合工程における本接合用回転ツールＦの移動軌跡とが略重なるのがよい。 The main joining step is a step of performing friction stir welding to the polymerized portion J1 using the main joining rotary tool F. In this joining step, following the temporary joining step, a table K that functions as a cooling plate is arranged under the metal member 31, and friction stir welding is performed while cooling the metal members 31 and 32. The tip side pin F3 of the rotating main joining rotation tool F is inserted from the surface 32a of the metal member 32, and the main joining rotation tool F is relatively moved to friction stir weld the polymerized portion J1. In this joining step, friction stir welding is performed while pressing the surface 32a of the metal member 32 on the outer peripheral surface of the base end side pin F2. In this joining step, the tip side pin F2 is in contact with both the metal members 31 and 32 while the base end side pin F2 is in contact with the metal member 32 (the tip of the tip end side pin F3 has entered the metal member 31). Friction stir welding is performed in the state). As a result, the composite plate 1D is formed. The movement route of the rotary tool F for joining is preferably along the arrangement position of the cooling pipe WP. That is, when viewed in a plan view, it is preferable that a part of the cooling pipe WP and the movement locus of the main joining rotation tool F in the main joining step substantially overlap.

第五実施形態に係る摩擦攪拌接合方法によれば、内部に流路を設けない複合板１Ｄが容易に形成される。第五実施形態に係る摩擦攪拌接合方法によっても第三実施形態と略同等の効果を得ることができる。 According to the friction stir welding method according to the fifth embodiment, the composite plate 1D having no internal flow path is easily formed. The friction stir welding method according to the fifth embodiment can also obtain substantially the same effect as that of the third embodiment.

また、仮接合工程を行うことで、本接合工程を行う際に、金属部材３１，３２間の目開きを防ぐことができる。 Further, by performing the temporary joining step, it is possible to prevent the opening between the metal members 31 and 32 when performing the main joining step.

なお、仮接合工程では、仮接合用回転ツールＧによる塑性化領域Ｗ１が断続的に形成されるように不連続に摩擦攪拌を行ってもよい。また、仮接合工程では、溶接によって重合部Ｊ１を接合してもよい。また、第一実施形態のようにタブ材を用いて仮接合工程及び本接合工程を行ってもよい。 In the temporary joining step, friction stirring may be performed discontinuously so that the plasticized region W1 by the temporary joining rotation tool G is intermittently formed. Further, in the temporary joining step, the polymerized portion J1 may be joined by welding. Further, the temporary joining step and the main joining step may be performed using the tab material as in the first embodiment.

また、図１７に示すように、本接合工程を行う際に、先端側ピンＦ３が金属部材３１に達しないようにする、つまり、基端側ピンＦ２及び先端側ピンＦ３が金属部材３２のみと接触するように設定して摩擦攪拌を行ってもよい。このような場合は、塑性化領域Ｗと重合部Ｊ１とを接触させることで、金属部材３１，３２同士を接合することができる。つまり、基端側ピンＦ２及び先端側ピンＦ３と金属部材３２との接触によって生じた摩擦熱で、金属部材３１，３２が塑性流動化されることにより、重合部Ｊ１を接合することができる。これにより、複合板１Ｅが形成される。 Further, as shown in FIG. 17, when the main joining step is performed, the tip end side pin F3 is prevented from reaching the metal member 31, that is, the base end side pin F2 and the tip end side pin F3 are only the metal member 32. Friction stir may be performed by setting the contact. In such a case, the metal members 31 and 32 can be joined to each other by bringing the plasticized region W into contact with the polymerization portion J1. That is, the metal members 31 and 32 are plastically fluidized by the frictional heat generated by the contact between the base end side pin F2 and the tip end side pin F3 and the metal member 32, so that the polymerization portion J1 can be joined. As a result, the composite plate 1E is formed.

１ 伝熱板
２ ベース部材
３ 凹溝
４ 蓋溝
５ 蓋板
６ 熱媒体用管
１０ タブ材
２０ 凹部
３１ 金属部材
３２ 金属部材
Ｆ 本接合用回転ツール
Ｆ２ 基端側ピン
Ｆ３ 先端側ピン
Ｇ 仮接合用回転ツール
Ｇ２ 基端側ピン
Ｇ３ 先端側ピン
Ｊ 突合せ部
Ｊ１ 重合部
Ｋ テーブル（冷却板）
ＷＰ 冷却管
Ｗ，Ｗ１ 塑性化領域 1 Heat transfer plate 2 Base member 3 Concave groove 4 Lid groove 5 Lid plate 6 Heat medium tube 10 Tab material 20 Recessed 31 Metal member 32 Metal member F Rotating tool for main joining F2 Base end side pin F3 Tip side pin G Temporary joining Rotating tool for G2 Base end side pin G3 Tip side pin J Butt part J1 Overlapping part K Table (cooling plate)
WP cooling pipe W, W1 plasticization region

Claims (10)

ベース部材の表面に開口する凹溝の周囲に形成された蓋溝に、蓋板を挿入する蓋板挿入工程と、
前記蓋溝の側壁と前記蓋板の側面との突合せ部に沿って基端側ピンと先端側ピンとを備えた本接合用回転ツールを相対移動させて摩擦攪拌を行う本接合工程と、を含み、
前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、
前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、
前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、
前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、
前記本接合工程において、前記ベース部材の裏面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記突合せ部に挿入し、前記基端側ピンの外周面を前記ベース部材及び前記蓋板に接触させた状態で摩擦攪拌を行うことを特徴とする伝熱板の製造方法。 The lid plate insertion step of inserting the lid plate into the lid groove formed around the concave groove that opens on the surface of the base member, and
A main joining step of moving a rotary tool for main joining provided with a base end side pin and a tip end side pin relative to each other along an abutting portion between the side wall of the lid groove and the side surface of the lid plate to perform friction stir welding.
The taper angle of the base end side pin of the main joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin.
The outer peripheral surface of the base end side pin has a spiral shape, and a stepped portion is formed when viewed from the side .
The step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °.
A spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °.
In the main joining step, the tip side pin of the main joining rotation tool that has been rotated is inserted into the butt portion while the base member and the lid plate are cooled by the cooling plate installed on the back surface side of the base member. A method for manufacturing a heat transfer plate, which comprises performing frictional stirring in a state where the outer peripheral surface of the base end side pin is in contact with the base member and the lid plate. ベース部材の表面に開口する蓋溝の底面に形成された凹溝に、熱媒体用管を挿入する熱媒体用管挿入工程と、
前記蓋溝に蓋板を挿入する蓋板挿入工程と、
前記蓋溝の側壁と前記蓋板の側面との突合せ部に沿って基端側ピンと先端側ピンとを備えた本接合用回転ツールを相対移動させて摩擦攪拌を行う本接合工程と、を含み、
前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、
前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、
前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、
前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、
前記本接合工程において、前記ベース部材の裏面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記突合せ部に挿入し、前記基端側ピンの外周面を前記ベース部材及び前記蓋板に接触させた状態で摩擦攪拌を行うことを特徴とする伝熱板の製造方法。 A heat medium tube insertion step of inserting a heat medium tube into a concave groove formed on the bottom surface of a lid groove that opens on the surface of the base member, and a process of inserting the heat medium tube.
The lid plate insertion step of inserting the lid plate into the lid groove and
A main joining step of moving a rotary tool for main joining provided with a base end side pin and a tip end side pin relative to each other along an abutting portion between the side wall of the lid groove and the side surface of the lid plate to perform friction stir welding.
The taper angle of the base end side pin of the main joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin.
The outer peripheral surface of the base end side pin has a spiral shape, and a stepped portion is formed when viewed from the side .
The step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °.
A spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °.
In the main joining step, the tip side pin of the main joining rotation tool that has been rotated is inserted into the butt portion while the base member and the lid plate are cooled by the cooling plate installed on the back surface side of the base member. A method for manufacturing a heat transfer plate, which comprises performing frictional stirring in a state where the outer peripheral surface of the base end side pin is in contact with the base member and the lid plate. 前記本接合工程の前に、前記突合せ部を仮接合する仮接合工程を含むことを特徴とする請求項１又は請求項２に記載の伝熱板の製造方法。 The method for manufacturing a heat transfer plate according to claim 1 or 2, wherein the temporary joining step of temporarily joining the butted portions is included before the main joining step. ベース部材の表面に開口する凹溝又は凹部を覆うように、前記ベース部材の表面に蓋板を重ね合わせる閉塞工程と、
前記蓋板の表面から基端側ピンと先端側ピンとを備えた本接合用回転ツールを挿入し、前記ベース部材の表面と前記蓋板の裏面との重合部に沿って前記本接合用回転ツールを相対移動させる本接合工程と、を含み、
前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、
前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、
前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、
前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、
前記本接合工程では、前記ベース部材の裏面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記蓋板の表面に挿入し、前記基端側ピンの外周面を前記蓋板の表面に接触させつつ、前記先端側ピンを前記ベース部材と前記蓋板の両方、又は、前記蓋板のみに接触させた状態で前記重合部の摩擦攪拌を行うことを特徴とする伝熱板の製造方法。 A closing step of superimposing a lid plate on the surface of the base member so as to cover the concave groove or the concave portion opening on the surface of the base member.
The main joining rotation tool provided with the proximal end side pin and the distal end side pin is inserted from the surface of the lid plate, and the main joining rotation tool is inserted along the overlapping portion between the front surface of the base member and the back surface of the lid plate. Including the main joining process of relative movement,
The taper angle of the base end side pin of the main joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin.
The outer peripheral surface of the base end side pin has a spiral shape, and a stepped portion is formed when viewed from the side .
The step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °.
A spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °.
In the main joining step, the tip side pin of the rotating tool for main joining, which has been rotated while cooling the base member and the lid plate with a cooling plate installed on the back surface side of the base member, is attached to the surface of the lid plate. The pin is inserted, and the outer peripheral surface of the base end side pin is in contact with the surface of the lid plate, and the tip end side pin is in contact with both the base member and the lid plate, or only the lid plate. A method for manufacturing a heat transfer plate, which comprises performing frictional stirring of a polymerized portion. ベース部材の表面に開口する凹溝又は凹部を覆うように、前記ベース部材の表面に蓋板を重ね合わせる閉塞工程と、
前記ベース部材の裏面から基端側ピンと先端側ピンとを備えた本接合用回転ツールを挿入し、前記ベース部材の表面と前記蓋板の裏面との重合部に沿って前記本接合用回転ツールを相対移動させる本接合工程と、を含み、
前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、
前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、
前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、
前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、
前記本接合工程では、前記蓋板の表面側に設置された冷却板で前記ベース部材及び前記蓋板を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを前記ベース部材の裏面に挿入し、前記基端側ピンの外周面を前記ベース部材の裏面に接触させつつ、前記先端側ピンを前記ベース部材と前記蓋板の両方、又は、前記ベース部材のみに接触させた状態で前記重合部の摩擦攪拌を行うことを特徴とする伝熱板の製造方法。 A closing step of superimposing a lid plate on the surface of the base member so as to cover the concave groove or the concave portion opening on the surface of the base member.
The main joining rotation tool provided with the base end side pin and the tip end side pin is inserted from the back surface of the base member, and the main joining rotation tool is inserted along the overlapping portion between the front surface of the base member and the back surface of the lid plate. Including the main joining process of relative movement,
The taper angle of the base end side pin of the main joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin.
The outer peripheral surface of the base end side pin has a spiral shape, and a stepped portion is formed when viewed from the side .
The step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °.
A spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °.
In the main joining step, the tip side pin of the rotating tool for main joining, which has been rotated while cooling the base member and the lid plate with a cooling plate installed on the front surface side of the lid plate, is attached to the back surface of the base member. The tip side pin is inserted and the outer peripheral surface of the base end side pin is brought into contact with the back surface of the base member, and the tip end side pin is brought into contact with both the base member and the lid plate or only the base member. A method for manufacturing a heat transfer plate, which comprises performing frictional stirring of a polymerized portion. 前記本接合工程の前に、前記重合部を仮接合する仮接合工程を含むことを特徴とする請求項４又は請求項５に記載の伝熱板の製造方法。 The method for manufacturing a heat transfer plate according to claim 4, wherein the temporary joining step of temporarily joining the polymerized portion is included before the main joining step. 前記本接合工程の終了後、前記本接合用回転ツールの摩擦攪拌によって生じたバリを切除するバリ切除工程を含むことを特徴とする請求項１乃至請求項６のいずれか一項に記載の伝熱板の製造方法。 The transmission according to any one of claims 1 to 6, further comprising a burr cutting step of cutting burrs generated by frictional stirring of the rotary tool for main joining after the completion of the main joining step. How to make a hot plate. 基端側ピンと先端側ピンとを備えた本接合用回転ツールを用いて二つの金属部材を接合する摩擦攪拌接合方法であって、
一方の前記金属部材の表面と他方の前記金属部材の裏面とを重ね合わせて重合部を形成する重合部形成工程と、
他方の前記金属部材の表面から回転した前記本接合用回転ツールの先端側ピンを挿入し、前記重合部に沿って前記本接合用回転ツールを相対移動させて摩擦攪拌を行う本接合工程と、を含み、
前記本接合用回転ツールの前記基端側ピンのテーパー角度は、１３５°～１６０°であり、前記先端側ピンのテーパー角度よりも大きくなっており、
前記基端側ピンの外周面には、螺旋状であり、側面視すると階段状の段差部が形成されており、
前記段差部の段差底面と段差側面とでなす段差角度は８５°～１２０°であり、
前記先端側ピンの外周面には、螺旋溝が刻設されており、前記螺旋溝の螺旋底面と螺旋側面とで構成される螺旋角度が４５°～９０°であり、
前記本接合工程では、一方の前記金属部材の裏面側に設置された冷却板で一方の前記金属部材及び他方の前記金属部材を冷却しつつ、回転した前記本接合用回転ツールの先端側ピンを他方の前記金属部材の表面に挿入し、前記基端側ピンの外周面を他方の前記金属部材の表面に接触させつつ、前記先端側ピンを一方の前記金属部材と他方の前記金属部材の両方、又は、他方の前記金属部材のみに接触させた状態で前記重合部の摩擦攪拌を行うことを特徴とする摩擦攪拌接合方法。 This is a friction stir welding method for joining two metal members using a rotary tool for main joining equipped with a base end side pin and a tip end side pin.
A step of forming a polymerized portion by superimposing the front surface of one of the metal members and the back surface of the other metal member to form a polymerized portion.
The main joining step of inserting the tip end side pin of the main joining rotation tool rotated from the surface of the other metal member and relatively moving the main joining rotation tool along the polymerization portion to perform friction stir welding. Including
The taper angle of the base end side pin of the main joining rotation tool is 135 ° to 160 °, which is larger than the taper angle of the tip end side pin.
The outer peripheral surface of the base end side pin has a spiral shape, and a stepped portion is formed when viewed from the side .
The step angle formed by the step bottom surface and the step side surface of the step portion is 85 ° to 120 °.
A spiral groove is engraved on the outer peripheral surface of the tip side pin, and the spiral angle composed of the spiral bottom surface and the spiral side surface of the spiral groove is 45 ° to 90 °.
In the main joining step, the tip side pin of the main joining rotation tool is rotated while cooling one said metal member and the other said metal member with a cooling plate installed on the back surface side of one said metal member. The tip side pin is both the one metal member and the other metal member while being inserted into the surface of the other metal member and bringing the outer peripheral surface of the proximal end side pin into contact with the surface of the other metal member. Or, a friction stir welding method characterized by performing friction stir welding of the polymerized portion in a state of being in contact with only the other metal member. 前記本接合工程の前に、前記重合部を仮接合する仮接合工程を含むことを特徴とする請求項８に記載の摩擦攪拌接合方法。 The friction stir welding method according to claim 8, further comprising a temporary joining step of temporarily joining the polymerized portion before the main joining step. 前記本接合工程の終了後、前記本接合用回転ツールの摩擦攪拌によって生じたバリを切除するバリ切除工程を含むことを特徴とする請求項８又は請求項９に記載の摩擦攪拌接合方法。 The friction stir welding method according to claim 8 or 9, further comprising a burr cutting step of cutting burrs generated by friction stir welding of the rotary tool for main joining after the completion of the main joining step.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007301579A (en) 2006-05-09 2007-11-22 Osaka Industrial Promotion Organization Friction stirring and working tool, and manufacturing method of friction stirred and worked product using the same
JP2014028402A (en) 2013-09-20 2014-02-13 Nippon Light Metal Co Ltd Method for manufacturing heat exchanger plate
JP2015139800A (en) 2014-01-28 2015-08-03 日本軽金属株式会社 Production method of heat transfer plate and friction stir welding method
JP2016215264A (en) 2015-05-26 2016-12-22 株式会社東芝 Frictional stir welding tool, and frictional stir welding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007301579A (en) 2006-05-09 2007-11-22 Osaka Industrial Promotion Organization Friction stirring and working tool, and manufacturing method of friction stirred and worked product using the same
JP2014028402A (en) 2013-09-20 2014-02-13 Nippon Light Metal Co Ltd Method for manufacturing heat exchanger plate
JP2015139800A (en) 2014-01-28 2015-08-03 日本軽金属株式会社 Production method of heat transfer plate and friction stir welding method
JP2016215264A (en) 2015-05-26 2016-12-22 株式会社東芝 Frictional stir welding tool, and frictional stir welding device

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