JP2019217515A

JP2019217515A - Manufacturing method of heat exchanger plate and friction agitation joining method

Info

Publication number: JP2019217515A
Application number: JP2018114685A
Authority: JP
Inventors: 堀　久司; Hisashi Hori; 久司堀; 伸城瀬尾; Nobushiro Seo; 宏介山中; Kosuke Yamanaka
Original assignee: Nippon Light Metal Co Ltd
Current assignee: Nippon Light Metal Co Ltd
Priority date: 2018-06-15
Filing date: 2018-06-15
Publication date: 2019-12-26

Abstract

To provide a manufacturing method of a heat exchanger plate which can minimize warpage due to level difference and recessed groove of metal member surface and thermal shrinkage and can reduce joint surface roughness.SOLUTION: A manufacturing method of a heat exchanger plate includes a cover plate insertion process of inserting a cover plate 5, a main joining process of relatively moving a rotary tool F for main joint provided with a base end side pin F2 and a tip side pin F3 along a butting part J of a side wall of a cover groove 4 and a side surface of the cover plate 5 to perform friction agitation and a straightening process of relatively moving a straightening rotary tool F provided with the base end side pin F2 and the tip side pin F3 with respect to a back surface 2b of a base member 2 to perform friction agitation. In the main joining process, in such a state that an outer circumferential surface of the base end side pin F2 is brought into contact with the base member 2 and the cover plate 5, friction agitation is performed and, in the straightening process, in such a state that the outer circumferential surface of the base end side pin F2 is brought into contact only with the base member 2, friction agitation is performed. Therein, a heat gain on a straightening process is less than a heat gain in the main joining process.SELECTED DRAWING: Figure 11

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 of manufacturing a heat transfer plate and a method of friction stir welding.

摩擦攪拌接合に用いられる回転ツールとして、ショルダ部と、ショルダ部から垂下する攪拌ピンとを備えたものが知られている。当該回転ツールは、ショルダ部の下端面を金属部材に押し込んだ状態で摩擦攪拌接合を行うというものである。ショルダ部を金属部材に押し込むことにより塑性流動材を押えてバリの発生を抑制することができる。しかし、接合の高さ位置が変化すると欠陥が発生しやすく、段差凹溝が大きくなるとともにバリが多く発生するという問題がある。 As a rotary tool used for friction stir welding, a rotary tool having a shoulder portion and a stirring pin hanging from the shoulder portion is known. The rotary tool performs the friction stir welding with the lower end surface of the shoulder portion pressed into the metal member. By pushing the shoulder portion into the metal member, it is possible to suppress the plastic flow material and suppress the occurrence of burrs. However, when the height position of the joint changes, a defect is apt to occur, and there is a problem that a stepped groove becomes large and burrs are often generated.

一方、攪拌ピンを備えた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、金属部材同士の突合せ部に回転した攪拌ピンを挿入し、攪拌ピンのみを金属部材に接触させた状態で摩擦攪拌接合を行う本接合工程を含むことを特徴とする摩擦攪拌接合方法が知られている（特許文献１）。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。しかし、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。 On the other hand, this is a friction stir welding method of joining two metal members using a rotating tool having a stirring pin, in which a rotated stirring pin is inserted into a butt portion between metal members, and only the stirring pin contacts the metal member. There has been known a friction stir welding method including a main joining step of performing friction stir welding in a state where the friction stir welding is performed (Patent Document 1). According to the related art, a spiral groove is engraved on the outer peripheral surface of the stirring pin, and friction stir welding is performed in a state where the base end is exposed while only the stirring pin is in contact with the member to be welded. The occurrence of defects can be suppressed even when the height position of the joint changes, and the load on the friction stirrer can be reduced. However, since the plastic fluid cannot be pressed by the shoulder, there is a problem that the stepped groove on the surface of the metal member becomes large and the joining surface roughness becomes large. In addition, there is a problem that a bulging portion (a portion where the surface of the metal member bulges compared to before the joining) is formed beside the stepped groove.

他方、特許文献２には、ショルダ部と、ショルダ部から垂下する攪拌ピンとを備えた回転ツールが記載されている。ショルダ部及び攪拌ピンの外周面にはそれぞれテーパー面が形成されている。ショルダ部のテーパー面には、平面視渦巻き状の溝が形成されている。当該溝の断面形状は半円状になっている。テーパー面を設けることにより、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。また、当該溝に塑性流動材が入り込むことにより、塑性流動材の流れを制御して好適な塑性化領域を形成できるというものである。 On the other hand, Patent Literature 2 discloses a rotary tool including a shoulder portion and a stirring pin hanging from the shoulder portion. Tapered surfaces are respectively formed on the outer peripheral surfaces of the shoulder portion and the stirring pin. A spiral groove in a plan view is formed on the tapered surface of the shoulder portion. The cross-sectional shape of the groove is semicircular. By providing the tapered surface, stable joining can be performed even if the thickness of the metal member or the height position of the joining changes. Further, when the plastic flow material enters the groove, the flow of the plastic flow material can be controlled to form a suitable plasticized region.

特開２０１３−３９６１３号公報JP 2013-39613 A 特許第４２１０１４８号公報Japanese Patent No. 4210148

しかし、特許文献２の従来技術であると、塑性流動材がテーパー面の溝の内部に入り込んでしまうため、溝が機能しなくなるという問題がある。また、当該溝に塑性流動材が入り込むと、塑性流動材が溝に付着した状態で摩擦攪拌されるため、被接合金属部材と付着物とが擦れ合って接合品質が低下するという問題がある。さらに、被接合金属部材の表面が粗くなり、バリが多くなるとともに、金属部材の表面の段差凹溝も大きくなるという問題がある。また、被接合金属部材の表面側のみから摩擦攪拌接合を行うと、被接合金属部材と回転ツールとの摩擦熱によって熱収縮が発生し、表面側が凹状となるように反ってしまうという問題がある。 However, according to the related art of Patent Literature 2, there is a problem that the groove does not function because the plastic flowing material enters the inside of the groove on the tapered surface. Further, when the plastic flow material enters the groove, friction stir is performed in a state where the plastic flow material adheres to the groove, so that there is a problem in that the metal member to be welded and the adhered material rub against each other, thereby deteriorating the joining quality. Further, there is a problem that the surface of the metal member to be joined becomes rough, the burr increases, and the stepped groove on the surface of the metal member also increases. Further, if the friction stir welding is performed only from the surface side of the metal member to be welded, there is a problem that heat shrinkage occurs due to frictional heat between the metal member to be welded and the rotating tool, and the surface side warps so as to be concave. .

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及び熱収縮による反り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 of manufacturing a heat transfer plate and a method of producing a heat transfer plate capable of reducing warpage due to a stepped groove and heat shrinkage on the surface of a metal member and reducing the surface roughness of a joint. It is an object to provide a joining method.

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、前記ベース部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、前記本接合工程において、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い、前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする。 In order to solve such a problem, the present invention provides a lid plate inserting step of inserting a lid plate into a lid groove formed around a concave groove opened on the surface of the base member, A main joining step of relatively moving a main joining rotary tool having a base side pin and a tip side pin along an abutting portion with a side surface of the lid plate to perform frictional stirring, and a base end with respect to a back surface of the base member. A correction step of performing relative agitation by rotating the correction rotary tool having a side pin and a distal end pin to perform frictional stirring, wherein the taper angle of the base-side pin of the main joining rotary tool and the correction rotary tool is The taper angle of the distal-side pin is larger than that of the base-side pin, and a stepped portion is formed on the outer peripheral surface of the proximal-side pin. Connect the tip side pin of the Inserting and performing frictional stirring in a state where the outer peripheral surface of the proximal end pin is in contact with the base member and the lid plate, and in the correcting step, the distal end side pin of the rotating rotating tool for correction is connected to the base member. The friction stir is performed in a state where the outer peripheral surface of the base-side pin is in contact with only the base member, so that the heat input amount in the correction step is smaller than the heat input amount in the main joining step. It is characterized by.

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、前記ベース部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、前記本接合工程において、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い、前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることをを特徴とする。 Further, the present invention provides a heat medium tube inserting step of inserting a heat medium tube into a concave groove formed on a bottom surface of a cover groove opening on a surface of a base member, and a cover for inserting a cover plate into the cover groove. A plate insertion step, and a main joining step of performing relative stirring of a main joining rotary tool having a base end pin and a front end side pin along an abutting portion between a side wall of the lid groove and a side surface of the lid plate to perform frictional stirring. And a correction step of relatively moving a rotation tool for correction provided with a proximal end pin and a distal end pin with respect to the back surface of the base member to perform frictional stirring, and includes the rotation tool for permanent bonding and the correction tool for correction. The taper angle of the proximal-side pin of the rotating tool is larger than the taper angle of the distal-side pin, and a step-shaped step portion is formed on the outer peripheral surface of the proximal-side pin. In the joining step, the rotating rotary tool for final joining Is inserted into the butting portion, and friction stirring is performed in a state where the outer peripheral surface of the proximal end pin is in contact with the base member and the lid plate. Insert the distal end pin of the tool into the back surface of the base member, perform frictional stirring in a state where the outer peripheral surface of the proximal end pin is in contact with only the base member, and It is characterized in that the amount of heat input in the straightening step is reduced.

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、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、前記ベース部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、前記本接合工程では、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みに接触させつつ、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い、前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする。 Further, the present invention includes a closing step of overlapping a lid plate on the surface of the base member so as to cover a concave groove or a concave portion opened on the surface of the base member, and a proximal pin and a distal pin from the surface of the lid plate. The main joining step of inserting the main joining rotary tool provided, and relatively moving the main joining rotary tool along an overlapping portion between the front surface of the base member and the back surface of the lid plate, and on the back surface of the base member. A relative rotation tool having a proximal side pin and a distal side pin relative to each other to perform frictional stirring, and wherein the main joint rotation tool and the proximal side pin of the correction rotation tool are included. Is larger than the taper angle of the distal-side pin, and a step-shaped step is formed on the outer peripheral surface of the proximal-side pin. Rotating tool for joining A distal pin is inserted into the surface of the lid plate, and the outer peripheral surface of the proximal pin is brought into contact with only the lid plate, and the distal pin is moved to both the base member and the lid plate or the lid. The friction stir of the overlapping portion is performed in a state of being brought into contact with only the plate, and in the straightening step, a tip pin of the rotated rotating tool for rotation is inserted into a back surface of the base member, and an outer periphery of the proximal pin is rotated. The frictional stirring is performed in a state where the surface is in contact with only the base member, and the heat input amount in the correction step is smaller than the heat input amount in the main joining step.

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、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、前記蓋板の表面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、前記本接合工程では、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みに接触させつつ、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い、前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする。 Further, the present invention includes a closing step of overlapping a cover plate on the surface of the base member so as to cover a concave groove or a concave portion opened on the surface of the base member, and a proximal pin and a distal pin from the back surface of the base member. The main joining step of inserting the main joining rotary tool provided, and relatively moving the main joining rotary tool along an overlapping portion between the surface of the base member and the back surface of the lid plate; and A relative rotation tool having a proximal side pin and a distal side pin relative to each other to perform frictional stirring, and wherein the main joint rotation tool and the proximal side pin of the correction rotation tool are included. Is larger than the taper angle of the distal-side pin, and a step-shaped step is formed on the outer peripheral surface of the proximal-side pin. Rotating tool for joining A distal pin is inserted into the back surface of the base member, and while the outer peripheral surface of the proximal pin is in contact with the base member only, the distal pin is connected to both the base member and the cover plate, or the base. The friction stir of the overlapping portion is performed in a state of being brought into contact with only the member, and in the correction step, a distal pin of the rotated rotating tool for correction is inserted into a surface of the lid plate, and an outer periphery of the proximal pin is It is characterized in that friction stirring is performed in a state where the surface is in contact with only the lid plate, and the heat input amount in the correction step is smaller than the heat input amount in the main joining step.

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、一方の前記金属部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、前記本接合工程において、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みに接触させつつ、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い、前記矯正工程において、回転した前記矯正用回転ツールの先端側ピンを他方の前記金属部材の裏面に挿入し、前記基端側ピンの外周面を当該裏面に接触させた状態で摩擦攪拌を行い、前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする。 Further, the present invention is a friction stir welding method for joining two metal members using a permanent joining rotary tool having a proximal pin and a distal pin, wherein the surface of one metal member and the other A superposed portion forming step of forming a superposed portion by superimposing the back surface of the metal member, and inserting a tip-side pin of the rotary tool for full joining rotated from the surface of the other metal member, along the superposed portion The main joining step of relatively moving the main joining rotary tool to perform frictional stirring, and moving the correction rotating tool including a base-side pin and a distal-side pin relative to the back surface of one of the metal members to thereby perform frictional friction. And a correction step of performing agitation, wherein the taper angle of the base-side pin of the rotary tool for final bonding and the rotation tool for correction is larger than the taper angle of the distal-side pin, and the base end Side pin A stepped step portion is formed on the peripheral surface, and in the main joining step, a distal pin of the rotated main joining rotary tool is inserted into a surface of the other metal member, and the base pin While the outer peripheral surface is in contact with only the other metal member, the tip-side pin is in contact with both the one metal member and the other metal member, or in contact with only the other metal member, Perform the friction stir of the overlapping portion, in the straightening step, insert the tip pin of the rotated rotating tool for straightening into the back surface of the other metal member, contact the outer peripheral surface of the proximal pin to the back surface In this state, frictional stirring is performed in a state where the heat input amount in the correction step is smaller than the heat input amount in the main joining step.

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。また、矯正工程を行うことにより、熱収縮による反りを小さくすることができる。 According to this method, since the base member and the cover plate or the metal member can be pressed by the outer peripheral surface of the base-side pin having a large taper angle, the stepped groove on the joining surface can be reduced, and the stepped groove can be reduced. The bulge formed on the side of the can be eliminated or reduced. Since the step-shaped step portion is shallow and has a wide exit, the plastic fluid hardly adheres to the outer peripheral surface of the base-side pin even if the metal member is pressed by the base-side pin. For this reason, while joining surface roughness can be made small, joining quality can be stabilized stably. Further, by providing the tip side pin, it can be easily inserted to a deep position. Further, by performing the straightening step, warpage due to heat shrinkage can be reduced.

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。 It is preferable that the method further includes a temporary joining step of temporarily joining the butted portions before the main joining step. It is preferable that the method further includes a temporary joining step of temporarily joining the overlapping portions before the main joining step. According to this manufacturing method, it is possible to prevent the opening of the butted portion or the overlapped portion in the main joining step.

また、前記本接合工程及び矯正工程の終了後、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含むことが好ましい。かかる製造方法によれば、接合表面をきれいに仕上げることができる。 Further, it is preferable that the method further includes a burr removing step of removing burr generated by friction stirring after the completion of the main joining step and the correcting step. According to such a manufacturing method, the joining surface can be finely finished.

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及び熱収縮による反り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。 ADVANTAGE OF THE INVENTION According to the manufacturing method of a heat exchanger 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 the warpage due to thermal shrinkage, and also to reduce the joining surface roughness. .

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 for 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 expanded 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 the rotating tool for this 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 the rotating tool for this 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 showing the heat transfer plate concerning a first embodiment of the present 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 a sectional view showing a lid board insertion process of a manufacturing method of a heat exchanger plate concerning a first 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 showing a tab material arrangement process of a manufacturing method of a heat exchanger plate concerning a first 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 a 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 a main joining process. 第一実施形態に係る伝熱板の製造方法を示す斜視図であって矯正工程を示す。It is a perspective view showing the manufacturing method of the heat transfer plate concerning a first embodiment, and shows a straightening 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矯正工程を示す。It is sectional drawing which shows the manufacturing method of the heat transfer plate which concerns on 1st embodiment, and shows a straightening process. 従来の回転ツールを示す概念図である。It is a conceptual diagram showing 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 showing 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 a 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 a cover 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 a temporary joining process. 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, and shows a main 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 a 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 a main 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 concerning 5th Embodiment of this invention. 第五実施形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（回転ツール）について説明する。本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。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 rotary tool (rotary tool) for full bonding used in the bonding method according to the present embodiment will be described. The welding rotary tool is a tool used for friction stir welding. As shown in FIG. 1, the main joining rotary tool F is made of, for example, tool steel, and mainly includes a base shaft portion F1, a base end side pin F2, and a front 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 stirrer.

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 proximal pin F2 is continuous with the base shaft portion F1 and tapers toward the distal end. The proximal pin F2 has a truncated cone shape. The taper angle A of the proximal-side pin F2 may be appropriately set, and is, for example, 135 to 160 °. If the taper angle A is less than 135 ° or more than 160 °, the joining surface roughness after friction stir becomes large. The taper angle A is larger than the taper angle B of the distal end side pin F3 described later. As shown in FIG. 2, a stepped step portion F <b> 21 is formed on the outer peripheral surface of the base end side pin F <b> 2 over the entire height direction. The step portion F21 is formed in a clockwise or counterclockwise spiral. That is, the step portion F21 has a spiral shape in plan view, and has a stepped shape in side view. In the present embodiment, the step portion F21 is set counterclockwise from the base end to the tip end in order to rotate the rotary tool F for clockwise rotation.

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 rotating the joining rotary tool F counterclockwise, it is preferable to set the stepped portion F21 clockwise from the base end to the tip end. Accordingly, the plastic fluid material is guided to the tip side by the step portion F21, so that the metal that overflows to the outside of the metal member to be joined can be reduced. The step portion F21 includes 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 portion F21 is appropriately set according to a step angle C described later and a height Y1 of the step side surface F21b.

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, and is set, for example, to 0.1 to 0.4 mm. When the height Y1 is less than 0.1 mm, the joining surface roughness increases. On the other hand, when the height Y1 exceeds 0.4 mm, the joining surface roughness tends to increase, and the number of effective steps (the number of steps 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 between the step bottom surface F21a and the step side surface F21b may be appropriately set, and is set, for example, to 85 to 120 °. The step bottom surface F21a is parallel to the horizontal plane in the present embodiment. The step bottom surface F21a may be inclined in a range of −5 ° to 15 ° with respect to a horizontal plane from the rotation axis of the tool toward the outer circumference (a minus is below the horizontal plane, and a plus is about 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 set such that the plastic flow material stays inside the step portion F21 and does not adhere to the outside when friction stirring is performed. At this time, it is set appropriately so that the plastic flow material can be pressed by the step bottom surface F21a to reduce the joining surface roughness.

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 pin F3 is formed continuously with the proximal pin F2. The tip side pin F3 has a truncated cone shape. The tip of the tip side pin F3 is a flat surface. The taper angle B of the distal pin F3 is smaller than the taper angle A of the proximal pin F2. As shown in FIG. 2, a spiral groove F31 is formed on the outer peripheral surface of the distal end side pin F3. The spiral groove F31 may be clockwise or counterclockwise. However, in the present embodiment, the spiral groove F31 is formed in a counterclockwise direction from the base end to the distal end in order to rotate the main joining rotary 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。 In addition, when rotating the joining rotary tool F to the left, it is preferable to set the spiral groove F31 clockwise from the base end to the tip end. Thereby, since the plastic flow material is guided to the front end side by the spiral groove F31, it is possible to reduce the metal overflowing to the outside of the metal member to be joined. The spiral groove F31 includes 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 groove F31 is defined as a length X2. The height of the spiral side surface F31b is defined as height Y2. The spiral angle D formed by the spiral bottom surface F31a and the spiral side surface F31b is, for example, 45 to 90 °. The helical 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 front end 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 rotation tool F for final joining can be changed as appropriate. FIG. 3 is a side view showing a first modification of the rotary tool according to the present invention. As shown in FIG. 3, in the rotary tool FA for bonding 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 is parallel to the horizontal plane, and the step angle C may be an acute angle within a range in which the plastic fluid material stays inside the step portion F21 during friction stirring and exits without adhering.

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 modified example of the main joining rotary tool of the present invention. As shown in FIG. 4, in the main joining rotary 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 may be parallel to the horizontal plane, and the step angle C may be an obtuse angle within a range that 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 modified example of the main joining rotary tool of the present invention. As shown in FIG. 5, in the rotary tool FC for final bonding 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 plane. As described above, the step bottom surface F21a may be formed so as to incline above the horizontal plane from the rotation axis of the tool toward the outer periphery in a range in which the plastic fluid material can be suppressed during the friction stirring. The same effects as those of the following embodiments can also be obtained by the first to third modifications of the above-described rotary tool for final bonding.

［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てもよい。 [First embodiment]
Next, the heat transfer plate of the present embodiment will be described. “Front surface” in the following description means a surface opposite to the “back surface”. As shown in FIG. 6, the heat transfer plate 1 according to the present embodiment mainly includes a base member 2 and a cover plate 5. The base member 2 has a substantially rectangular parallelepiped shape. A concave groove 3 and a lid groove 4 are formed in the base member 2. The material of the base member 2 and the cover plate 5 is not particularly limited as long as it can be frictionally stirred. In the present embodiment, the material is an aluminum alloy. The base member 2 may be formed of, for example, a material having a higher hardness than the cover 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 concave groove 3 penetrates from one side surface to the other side surface at the center of the base member 2. The concave groove 3 is provided on the bottom surface of the lid groove 4. The bottom of the concave groove 3 has an arc shape. The opening of the concave groove 3 is open to the surface 2 a 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 formed continuously with the concave groove 3 on the surface 2 a side of the concave groove 3. The cover groove 4 has a rectangular shape in cross section, and is open to the front 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 cover plate 5 is a plate-like member inserted into the cover groove 4. The cover plate 5 has the same shape as the hollow portion of the cover groove 4 so as to be inserted into the cover 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。 A pair of side walls of the lid groove 4 and a pair of side surfaces of the lid plate 5 are abutted to form abutting portions J, J. The butted portions J, J are joined by friction stirring in the depth direction. A space surrounded by the concave groove 3 of the heat transfer plate 1 and the lower surface of the cover plate 5 becomes a flow path through which the fluid flows.

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、矯正工程と、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 arranging step, a temporary joining step, a main joining step, and a straightening 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。まず、クランプ（図示省略）を介して架台Ｋにベース部材２を固定する。そして、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. First, the base member 2 is fixed to the gantry K via a clamp (not shown). Then, the concave groove 3 and the lid groove 4 are formed by cutting using an end mill or the like. Note that the base member 2 in which the concave groove 3 and the lid groove 4 are formed in advance by die casting or extrusion molding 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 cover plate inserting step is a step of inserting the cover plate 5 into the cover groove 4. The side walls of the lid groove 4 and the side surfaces of the lid plate 5 are respectively butted to form butted portions J. The upper surface of the cover plate 5 and the surface 2a are flush.

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 member arranging step is a step of arranging the tab members 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 stirring described later. The tab member 10 is in surface contact with the opposing side surface of the base member 2 and is arranged on an extension of the butted portions J, J. In the present embodiment, the tab member 10 is formed of an aluminum alloy, which is a material equivalent to the base member 2. The tab member 10 is joined by welding the corners between the tab member 10 and the base member 2.

図９Ａ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. 9A, the temporary joining step is a step of performing preliminary friction stir welding on the butted portions J, J using the rotating tool G for temporary joining. The start position and the end position of the temporary joining step are not particularly limited as long as they are on the surfaces of the base member 2 and the tab material 10, but are set on the surface of the tab material 10 in the present embodiment.

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 starting position of the temporary joining step is set on the surface of one of the tab members 10, and friction stir welding is performed on the entire length of the one butt portion J. A plasticizing region W1 is formed on the movement trajectory of the temporary joining rotary tool G. After the temporary joining rotary tool G is moved to the other tab member 10, it is folded back on the surface of the tab member 10 as it is, and friction stir welding is performed on the entire length of the other butt portion J. When the temporary joining rotary tool G is moved to the one tab material 10, the temporary joining rotary tool G is detached from the tab material 10.

図９Ｂ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. 9B, the main joining step is a step of performing friction stir welding on the butted portions J, J using the main joining rotary tool F. It is preferable that the start position and the end position of the main joining step be set on the surface of the tab material 10. When inserting the final joining rotary tool F into the tab material 10, the hole of the temporary joining rotary tool G may be used, or a prepared hole may be separately provided in the tab material 10 and the You may insert the rotation tool F for joining.

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。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。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 the main joining step, the friction stir welding is performed in a state where the base end side pin F2 and the front end side pin F3 are in contact with the base member 2 and the cover plate 5. Friction stir welding is performed while the base member 2 and the cover plate 5 are pressed by the outer peripheral surface of the base end pin F2 while inserting the front end pin F3 of the rotating main joining rotary tool F into the butting portion J. The rotary tool F for full joining is relatively moved along the butting portion J. The insertion depth of the proximal-side pin F2 and the distal-side pin F3 may be appropriately set within a range where the outer peripheral surface of the proximal-side pin F2 can hold down the base member 2 and the cover plate 5. For example, the insertion depth of the proximal-side pin F2 and the distal-side pin F3 is a range in which the outer peripheral surface of the proximal-side pin F2 can press the base member 2 and the cover plate 5, and the distal-side pin F3 May reach the lid groove 4. In the present embodiment, the base pin 2 is set so that the center portion of the outer peripheral surface of the proximal end pin F2 in the height direction comes into contact with the base member 2 and the cover plate 5. A plasticizing region W is formed on the movement trajectory of the rotary tool F for joining. When the main joining step is completed, the tab member 10 is cut off from the base member 2.

矯正工程は、図１０及び図１１に示すように、ベース部材２の裏面２ｂに対して摩擦攪拌を行って、ベース部材２及び蓋板５の反りを矯正する工程である。本接合工程が終わったら、ベース部材２を裏返して、再度架台Ｋに固定する。矯正工程では、矯正用回転ツールＦを用いる。本実施形態では、矯正用回転ツールＦは、本接合用回転ツールＦと同一である。矯正工程では、ベース部材２の裏面２ｂの開始位置Ｓｐに回転する矯正用回転ツールＦを挿入し、塑性化領域Ｗが長丸状を描くように移動ルートを設定する。 The straightening step is a step of correcting the warpage of the base member 2 and the cover plate 5 by performing friction stirring on the back surface 2b of the base member 2 as shown in FIGS. After the main joining step, the base member 2 is turned over and fixed to the gantry K again. In the straightening process, a rotating tool F for straightening is used. In the present embodiment, the rotation tool F for correction is the same as the rotation tool F for main joining. In the correction process, the rotation tool F for rotation is inserted into the start position Sp of the back surface 2b of the base member 2, and a movement route is set so that the plasticized region W draws an oval shape.

図１１に示すように、本接合工程によって本接合用回転ツールＦとベース部材２及び蓋板５との間に摩擦熱が発生し、熱収縮によってベース部材２の表面２ａ側が凹状となるように反ってしまう。したがって、ベース部材２を裏返しにすると、架台Ｋとベース部材２の表面２ａとは面接触しない状態となる。矯正工程では、矯正用回転ツールＦの基端側ピンＦ２の外周面をベース部材２の裏面２ｂに接触させた状態で摩擦攪拌を行う。 As shown in FIG. 11, frictional heat is generated between the rotary tool F for final bonding, the base member 2 and the cover plate 5 in the final bonding step, and the surface 2a side of the base member 2 becomes concave due to thermal contraction. Will warp. Therefore, when the base member 2 is turned over, the gantry K and the surface 2a of the base member 2 do not come into surface contact. In the straightening step, friction stirring is performed in a state where the outer peripheral surface of the proximal pin F2 of the rotating tool F for correction is in contact with the back surface 2b of the base member 2.

矯正用回転ツールＦの移動軌跡や挿入深さは、本接合工程で発生した反りが無くなるか又は極力小さくなるように適宜設定すればよい。図１１に示すように、矯正工程を行う際には、ベース部材２の表面２ａと架台Ｋとは面接触していないため、ベース部材２内の摩擦熱が架台Ｋを伝って外部に抜けにくくなっている。仮に、ベース部材２の表裏で摩擦攪拌による入熱量を同じにすると、摩擦熱が外部に抜けなくなっている分、裏面２ｂの反りがかえって大きくなってしまうおそれがある。したがって、本接合工程で発生した反りが無くなるか又は極力小さくなるようにするためには、矯正工程における摩擦攪拌による入熱量を本接合工程における摩擦攪拌による入熱量よりも小さく設定する必要がある。本実施形態では、矯正用回転ツールＦは、本接合用回転ツールＦと同一であるが、例えば、矯正用回転ツールとして本接合用回転ツールＦよりも小型の矯正用回転ツールを使用してもよい。また、例えば、矯正工程における矯正用回転ツールＦの移動ルートは、本接合工程における本接合用回転ツールＦの移動ルートよりも短く設定してもよい。また、例えば、矯正工程における矯正用回転ツールＦの移動速度は、本接合工程における本接合用回転ツールＦの移動速度よりも速く設定してもよい。また、例えば、矯正工程における矯正用回転ツールＦの挿入深さを、本接合工程における本接合用回転ツールＦの挿入深さよりも小さく設定してもよい。 The movement trajectory and insertion depth of the rotation tool F for correction may be appropriately set so that the warpage generated in the main joining process is eliminated or minimized. As shown in FIG. 11, when performing the correction process, the surface 2 a of the base member 2 is not in surface contact with the gantry K, so that the frictional heat in the base member 2 is hard to be transmitted to the outside through the gantry K. Has become. If the amount of heat input by friction stirring on the front and back surfaces of the base member 2 is the same, the warpage of the back surface 2b may be increased by the amount of frictional heat that cannot escape to the outside. Therefore, in order to eliminate or minimize the warpage generated in the main joining step, it is necessary to set the amount of heat input by friction stirring in the correction step to be smaller than the amount of heat input by friction stirring in the main joining step. In the present embodiment, the rotation tool F for correction is the same as the rotation tool F for permanent bonding. However, for example, even if a rotation tool for correction that is smaller than the rotation tool F for permanent bonding is used as the rotation tool for correction, Good. In addition, for example, the moving route of the rotation tool F for correction in the straightening step may be set shorter than the movement route of the rotary tool F for main bonding in the main bonding step. In addition, for example, the moving speed of the rotation tool F for correction in the correction process may be set to be faster than the movement speed of the rotation tool F for main bonding in the main bonding process. Further, for example, the insertion depth of the rotation tool F for correction in the straightening step may be set to be smaller than the insertion depth of the rotation tool F for full bonding in the main bonding step.

なお、本接合工程及び矯正工程の終了後、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の表面及び裏面をきれいに仕上げることができる。 After the main joining step and the straightening step, a burr removing step of removing burr generated by friction stirring may be performed. By performing the deburring step, the front and back surfaces of the base member 2 and the cover plate 5 can be finely finished.

ここで、例えば、図１２Ａ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１２Ｂ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. 12A, in the case of the conventional rotary tool 200, the shoulder portion does not press the surface of the metal member 210 to be joined, so that the stepped groove (the surface of the metal member to be joined and the plasticized region However, there is a problem that the concave groove formed by the surface becomes large and the joining surface roughness becomes large. In addition, there is a problem that a bulging portion (a portion where the surface of the metal member to be bonded bulges compared to before the bonding) is formed beside the stepped groove. On the other hand, when the taper angle β of the rotary tool 201 is larger than the taper angle α of the rotary tool 200 as in the rotary tool 201 of FIG. 12B, the surface of the metal member 210 to be joined can be pressed as compared with the rotary tool 200. Therefore, the step recess groove becomes small, and the bulging portion also becomes small. However, since the downward plastic flow becomes strong, a kissing bond is easily formed below 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 main joining rotary tool F of the present embodiment is configured to include the proximal pin F2 and the distal pin F3 having a taper angle smaller than the taper angle A of the proximal pin F2. . Thereby, it becomes easy to insert the rotary tool F for full joining into the butt portion J. Further, since the taper angle B of the distal end side pin F3 is small, it is possible to easily insert the main joining rotary tool F to a deep position of the abutting portion J. Further, since the taper angle B of the distal end side pin F3 is small, the downward plastic flow can be suppressed as compared with the rotating tool 201. For this reason, it is possible to prevent a kissing bond from being formed below the plasticized region W. On the other hand, since the taper angle A of the base end side pin F2 is large, the bonding can be performed more stably even when the thickness of the metal member to be bonded or the height position of the bonding changes as compared with the conventional rotary 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。 In addition, since the plastic flow material can be pressed by the outer peripheral surface of the base end side pin F2, the stepped groove formed on the joining surface can be reduced, and the bulging portion formed beside the stepped groove. Can be eliminated or reduced. In addition, since the step-shaped step portion F21 is shallow and has a wide exit, the plastic flow material easily escapes to the outside of the step portion F21 while holding the plastic flow material at the step bottom surface F21a. For this reason, even if the plastic flow material is pressed by the base end pin F2, the plastic flow material hardly adheres to the outer peripheral surface of the base end pin F2. Therefore, the joining surface roughness can be reduced, and the joining 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 the main joining step, it is not always necessary to perform the friction stir over the entire length of the butt portions J, J in the depth direction. 1 can improve the water tightness and air tightness.

また、矯正工程を行うことにより、ベース部材２の裏面２ｂにも反りが発生するため、ベース部材２の表面２ａに発生した反りを矯正することができる。これにより、伝熱板１を平坦にすることができる。また、矯正工程を矯正用回転ツールＦ（本接合用回転ツールＦと同じ）で行うことにより、ベース部材２の裏面２ｂの段差凹溝を小さくすることができるとともに表面粗さを小さくすることができる。また、矯正工程では、本接合工程よりも入熱量を小さくすることで、伝熱板１の反りを解消してより平坦にすることができる。 Further, by performing the straightening step, the back surface 2b of the base member 2 is also warped, so that the warpage generated on the front surface 2a of the base member 2 can be corrected. Thereby, the heat transfer plate 1 can be flattened. Further, by performing the straightening step using the straightening rotary tool F (same as the main joining rotary tool F), it is possible to reduce the stepped groove on the back surface 2b of the base member 2 and to reduce the surface roughness. it can. Further, in the straightening step, by making the heat input smaller than in the main joining step, the heat transfer plate 1 can be warped to be more flat.

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 bonding step, it is possible to prevent the opening between the base member 2 and the cover plate 5 when performing the main bonding step. In addition, in the temporary joining step and the final joining step, the rotating tool G for temporary joining and the rotating tool F for final joining are not detached from the base member 2 during the friction stirring, and each rotating tool is moved in a one-stroke manner. , Work time 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, the frictional stirring may be performed discontinuously so that the plasticized region W1 by the temporary joining rotary tool G is formed intermittently. In the temporary joining step, the butt portions J may be joined by welding. Alternatively, the tab member 10 and the base member 2 may be temporarily joined using the temporary joining rotating 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 differs from the first embodiment in that a heat transfer tube 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、矯正工程と、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, a main joining step, and a straightening step are performed.

図１３Ａ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. 13A, the preparation step is a step of preparing the base member 2.

図１３Ｂ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. 13B, the heat medium tube insertion step is a step of inserting the heat medium tube 6 into the concave groove 3. The size and the like of the concave groove 3 and the heat medium tube 6 may be appropriately set, but in this embodiment, the outer diameter of the heat medium tube 6 and the width and depth of the concave groove 3 are substantially equal. I have.

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 cover plate inserting step is a step of inserting the cover plate 5 into the cover groove 4. The side wall of the lid groove 4 and the side surface of the lid plate 5 abut each other to form an abutting portion J. When the cover plate 5 is inserted into the cover groove 4, the heat medium pipe 6 comes into contact with the cover plate 5, and the surface 2 a of the base member 2 and the upper surface of the cover plate 5 are flush.

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要領で行う。 The temporary joining step is a step of preliminarily joining the butted portions J and J. The temporary joining step is performed in the same manner as in the first embodiment.

図１４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要領で行う。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の深さ方向の全長に亘って形成される。矯正工程は、第一実施形態と同じ要領で行う。 As shown in FIG. 14, the final joining step is a step of performing friction stir welding on the butted portions J, J using the final joining rotary tool F. The main joining step is performed in the same manner as in the first embodiment. Plasticized regions W, W are formed on the movement locus of the rotary tool F for joining. The plasticized region W is formed over the entire length of the butted portions J, J in the depth direction. The correction process is performed in the same manner as in the first embodiment.

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。 With the method for manufacturing a heat transfer plate according to the second embodiment, substantially the same effects as in the first embodiment can be achieved. Further, the heat transfer plate 1A including the heat medium tubes 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 cover groove 4, the cover 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. . In addition, when 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, build-up welding may be performed 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 together with the main joining rotary tool F.

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 cover groove 4 is provided is illustrated, but the cover plate 5 may be inserted directly into the concave groove 3 without providing the cover groove 4.

また、図１４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。 In addition, as shown in FIG. 14, when a gap Q is formed around the heat medium tube 6, the gap Q may be filled by the main joining step. In the cover plate inserting step, when the cover plate 5 is inserted into the cover groove 4, a gap Q is formed by the concave groove 3, the lower surface of the cover plate 5, and the heat medium pipe 6. The positions of the butting portions J, J are brought close to the heat medium pipe 6, and in the main joining step, the plastic fluid material formed by the main joining rotary tool F is caused to flow into the gap Q. Thereby, since the space Q around the heat medium pipe 6 is filled with the metal, the watertightness and the 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 of manufacturing the heat transfer plate according to the third embodiment differs from the first embodiment in that the cover groove 4 is not formed in the base member 2 and the cover plate 5 is placed on the surface 2a of the base member 2. I 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、矯正工程と、を行う。 In the method for manufacturing a heat transfer plate according to the third embodiment, a preparation step, a groove closing step, a temporary joining step, a main joining step, and a straightening step are performed.

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に凹溝３を形成する。 As shown in FIG. 15A, the preparation step is a step of preparing the base member 2. A concave groove 3 is formed on the surface 2 a 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 groove closing step (closing step) is a step of placing the cover plate 5 on the surface 2 a of the base member 2 and covering the upper part of the 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 overlapped 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 overlapped portion J1. In the temporary joining step, in the present embodiment, the rotary tool G for temporary joining is inserted from the side surfaces of the base member 2 and the cover plate 5, and friction stir welding is performed on the overlapping portion J1. After the temporary joining step, a plasticized region W1 is formed on the side surfaces of the base member 2 and the cover plate 5.

図１５Ｂ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。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。 As shown in FIG. 15B, the main joining step is a step of performing friction stir welding on the overlapping portion J1 using the main joining rotary tool F. Insert the front end pin F3 of the rotating rotary tool F for rotation from the surface 5a of the cover plate 5 and relatively move the rotary tool F for full bonding along the longitudinal direction of the concave groove 3 to rub the overlapping portion J1. Stir welding. The moving route of the main joining rotary tool F is set so that the plastic fluid does not flow into the concave groove 3.

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。矯正工程は、第一実施形態と同じ要領で行う。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 the main joining step, friction stir welding is performed while pressing the surface 5a of the cover plate 5 with the outer peripheral surface of the base end side pin F2. In the main joining step, the friction stir welding is performed in a state where the proximal pin F2 is in contact with the cover plate 5 and the distal pin F3 is in contact with both the base member 2 and the cover plate 5. The insertion depth of the proximal-side pin F2 and the distal-side pin F3 may be appropriately set within a range in which the outer peripheral surface of the proximal-side pin F2 can hold down the surface 5a of the cover plate 5. In the present embodiment, the distal end pin F3 is set to be in contact with the base member 2 while the vicinity of the center in the height direction of the outer peripheral surface of the proximal end pin F2 is in contact with the surface 5a of the cover plate 5. The correction process is performed in the same manner as in the first embodiment. Even in this case, substantially the same effects as in the first embodiment can be obtained.

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。 As in the method of manufacturing the heat transfer plate according to the third embodiment, even when the cover groove 5 is not provided and the cover plate 5 having a large thickness is placed on the surface 2 a of the base member 2, 1B can be easily manufactured. Further, by performing the temporary bonding step, it is possible to prevent the opening between the base member 2 and the cover plate 5 when performing the main bonding 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, the frictional stirring may be performed discontinuously so that the plasticized region W1 by the temporary joining rotary tool G is formed intermittently. In the temporary joining step, the overlapped portion J1 may be joined by welding. Moreover, you may perform a temporary joining process and a full joining process using a tab material like 1st embodiment.

また、本実施形態では、基端側ピンＦ２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。 In the present embodiment, the distal end of the proximal-side pin F2 is set so as to be pushed into the position where it reaches the base member 2. However, it is set so as not to reach the base member 2, that is, the proximal-side pin F2 and the distal end. The insertion depth may be set so that both of the side pins F3 are in contact with only the lid plate 5. In such a case, the overlapping portion J1 is joined by plasticizing fluidization of the overlapping portion J1 by frictional heat generated by the contact between the base end side pin F2 and the distal end side pin F3 and the cover plate 5.

また、本実施形態では、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のみと接触する状態で重合部Ｊ１近傍まで押し込んで、重合部Ｊ１を摩擦攪拌するように設定してもよい。この場合は、矯正工程において蓋板５の表面５ａから矯正用回転ツールＦの先端側ピンＦ３を挿入して、第一実施形態と同じ要領で行う。 Further, in the present embodiment, the main joining rotary tool F is inserted from the front surface 5a of the cover plate 5, but the main joining rotary tool F is inserted from the back surface 2b of the base member 2 to friction stir the overlapped portion J1. You may do so. Even in such a case, the distal end side pin F3 may be pushed to a position where it contacts both the base member 2 and the cover plate 5, or may be pushed near the overlapping portion J1 in a state where it contacts only the base member 2. Alternatively, the overlapping portion J1 may be set to be frictionally stirred. In this case, in the straightening step, the distal end side pin F3 of the rotating tool F for straightening is inserted from the surface 5a of the cover plate 5, and the same procedure as in the first embodiment is performed.

〔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 differs from the third embodiment in that a concave portion 20 having a large depression 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、閉塞工程と、仮接合工程と、本接合工程と、矯正工程と、を行う。 The method for manufacturing a heat transfer plate according to the fourth embodiment includes a preparation step, a closing step, a temporary joining step, a main joining step, and a straightening step.

図１６Ａ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. 16A, the preparation step is a step of preparing the base member 2. The recess 20 is formed in the surface 2 a 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。図１６Ｂに示すように、仮接合工程、本接合工程及び矯正工程は、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。 The recess closing step (closing step) is a step of placing the cover plate 5 on the surface 2 a 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 overlapped portion J1. As shown in FIG. 16B, the temporary joining step, the main joining step, and the correction step are the same as those in the third embodiment, and thus detailed description will be omitted. Thereby, 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。 In the method for manufacturing a heat transfer plate according to the fourth embodiment, substantially the same effects as in the third embodiment can be obtained. Further, according to the fourth embodiment, even when the cover plate 5 having the concave portion 20 larger than the concave groove 3 and having a large plate thickness is placed, the heat transfer plate 1C can be easily formed. .

なお、本実施形態では、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 present embodiment, the distal end pin F3 is set so as to be pushed down to the position where it reaches the base member 2. However, the distal end pin F3 is set so as not to reach the base member 2, that is, the proximal end pin F2 and the distal end side. The overlapping portion J1 may be set so as to be frictionally stirred by pushing the pin F3 to the position where only the cover plate 5 contacts. In such a case, the base member 2 and the cover plate 5 are plastically fluidized by frictional heat generated by the contact between the base side pin F2 and the front end side pin F3 and the cover plate 5, so that the overlapped portion J1 is formed. Joined.

また、本実施形態では、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のみと接触する状態で重合部Ｊ１近傍まで押し込んで、摩擦攪拌するように設定してもよい。この場合は、矯正工程において蓋板５の表面５ａから矯正用回転ツールＦの先端側ピンＦ３を挿入して、第一実施形態と同じ要領で行う。 Further, in the present embodiment, the main joining rotary tool F is inserted from the front surface 5a of the cover plate 5, but the main joining rotary tool F is inserted from the back surface 2b of the base member 2 to friction stir the overlapped portion J1. You may do so. Even in this case, the distal end side pin F3 may be pushed to a position in contact with both the base member 2 and the cover plate 5, or may be pushed to the vicinity of the overlapped portion J1 in a state of contacting only the base member 2 to provide friction. You may set so that it may stir. In this case, in the straightening step, the distal end side pin F3 of the rotating tool F for straightening is inserted from the surface 5a of the cover plate 5, and the same procedure as in the first embodiment is performed.

〔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, a friction stir welding method according to a 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、矯正工程と、を行う。 In the friction stir welding method according to the fifth embodiment, a preparation step, a superposition step (overlapping section forming step), a temporary joining step, a main joining step, and a straightening step are performed.

図１７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. 17, the preparation step is a step of preparing metal members 31 and 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 friction stirable metals. For example, the grade of the metal member 32 into which the rotating tool F for full joining is inserted may be a grade having a lower hardness than 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 (superposition section forming step) is a step of superposing the metal members 31 and 32. In the overlapping step, the back surface 32b of the metal member 32 is superimposed on the front surface 31a of the metal member 31 to form the overlapped 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 overlapped portion J1. In the temporary joining step, in this embodiment, the temporary joining rotary tool G is inserted from the side surfaces of the metal members 31 and 32, and friction stir welding is performed on the overlapped portion J1. After the temporary joining step, the plasticized region W1 is formed on the side surfaces of the metal members 31, 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。本実施形態では、金属部材３２の表面３２ａから垂直に本接合用回転ツールＦを挿入し、先端側ピンＦ３の先端が金属部材３１に入り込むように設定する。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。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で摩擦攪拌接合を行う。矯正工程は、第一実施形態と同じ要領で行う。すなわち、矯正工程において金属部材３１の裏面３１ｂから矯正用回転ツールＦの先端側ピンＦ３を挿入して、第一実施形態と同じ要領で行う。これにより、複合板１Ｄが形成される。 The main joining step is a step of performing friction stir welding on the overlapping portion J1 using the main joining rotary tool F. In the present embodiment, the main joining rotary tool F is inserted vertically from the surface 32a of the metal member 32, and the distal end pin F3 is set so as to enter the metal member 31. The main joining step is a step of performing friction stir welding on the overlapping portion J1 using the main joining rotary tool F. The distal end side pin F3 of the rotating main joining rotary tool F is inserted from the surface 32a of the metal member 32, and the main joining rotary tool F is relatively moved to frictionally stir weld the overlapped portion J1. In the main joining step, friction stir welding is performed while holding the surface 32a of the metal member 32 with the outer peripheral surface of the base end side pin F2. In the main joining step, friction stir welding is performed with the distal end pin F3 in contact with both of the metal members 31 and 32 while the proximal end pin F2 is in contact with the metal member 32. The correction process is performed in the same manner as in the first embodiment. That is, in the straightening step, the tip pin F3 of the rotating tool F for straightening is inserted from the back surface 31b of the metal member 31, and the same procedure as in the first embodiment is performed. Thereby, the composite plate 1D is formed.

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 flow path therein can be easily formed. With the friction stir welding method according to the fifth embodiment, substantially the same effects as in the third embodiment can be obtained.

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。 In addition, by performing the temporary bonding step, it is possible to prevent openings between the metal members 31 and 32 when performing the main bonding step.

また、図１８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。 In addition, as shown in FIG. 18, when performing the main joining step, the distal-side pin F3 is prevented from reaching the metal member 31, that is, the proximal-side pin F2 and the distal-side pin F3 are connected only to the metal member 32. Friction agitation may be performed by setting so as to make 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 overlapped portion J1. That is, the metal members 31 and 32 are plastically fluidized by frictional heat generated by the contact between the base-side pin F2 and the tip-side pin F3 and the metal member 32, so that the overlapped portion J1 can be joined. Thereby, the composite board 1E is formed.

なお、前記した実施形態では、摩擦攪拌によって矯正工程を行ったが、例えば、被接合金属部材を一対のローラー部材で挟持してロール矯正により反りを矯正してもよい。また、被接合金属部材を裏側から押圧装置でプレスして反りを矯正してもよい。 In the above-described embodiment, the straightening process is performed by friction stirring. However, for example, the metal member to be joined may be sandwiched between a pair of roller members to correct the warpage by roll straightening. Further, the metal member to be joined may be pressed from behind by a pressing device to correct the warp.

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（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
Ｊ突合せ部
Ｊ１重合部
Ｗ塑性化領域 REFERENCE SIGNS LIST 1 heat transfer plate 2 base member 3 concave groove 4 lid groove 5 lid plate 6 tube for heat medium 10 tab material 20 concave portion 31 metal member 32 metal member F Rotation tool (rotation tool) for final bonding
F2 Base end pin F3 Tip side pin G Rotary tool for temporary joining J Butt joint J1 Overlapping part W Plasticized area

Claims

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、
前記ベース部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、
前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、
前記本接合工程において、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い、
前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、
前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする伝熱板の製造方法。 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 main joining step of relatively moving a main joining rotary tool including a proximal end pin and a distal end pin along a butt portion between the side wall of the lid groove and the side surface of the lid plate to perform frictional stirring,
A correction step of relatively moving a rotation tool for correction having a proximal pin and a distal pin with respect to the back surface of the base member to perform frictional stirring,
The taper angle of the proximal-side pin of the main joining rotary tool and the correction rotary tool is larger than the taper angle of the distal-side pin,
A step-shaped step portion is formed on the outer peripheral surface of the base end side pin,
In the main joining step, a tip pin of the rotated main joining rotating tool is inserted into the butting portion, and friction stirring is performed in a state in which an outer peripheral surface of the base end pin is in contact with the base member and the lid plate. Do
In the straightening step, insert the distal pin of the rotating rotary tool for rotation into the back surface of the base member, perform frictional stirring in a state where the outer peripheral surface of the proximal pin is in contact with only the base member,
A method for manufacturing a heat transfer plate, wherein a heat input amount in the correction step is smaller than a heat input amount in the main joining step.

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、
前記ベース部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、
前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、
前記本接合工程において、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い、
前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、
前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくする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 the lid groove opening on the surface of the base member,
A lid plate inserting step of inserting a lid plate into the lid groove,
A main joining step of relatively moving a main joining rotary tool including a proximal end pin and a distal end pin along a butt portion between the side wall of the lid groove and the side surface of the lid plate to perform frictional stirring,
A correction step of relatively moving a rotation tool for correction having a proximal pin and a distal pin with respect to the back surface of the base member to perform frictional stirring,
The taper angle of the proximal-side pin of the main joining rotary tool and the correction rotary tool is larger than the taper angle of the distal-side pin,
A step-shaped step portion is formed on the outer peripheral surface of the base end side pin,
In the main joining step, a tip pin of the rotated main joining rotating tool is inserted into the butting portion, and friction stirring is performed in a state in which an outer peripheral surface of the base end pin is in contact with the base member and the lid plate. Do
In the straightening step, insert the distal pin of the rotating rotary tool for rotation into the back surface of the base member, perform frictional stirring in a state where the outer peripheral surface of the proximal pin is in contact with only the base member,
A method for manufacturing a heat transfer plate, wherein a heat input amount in the correction step is smaller than a heat input amount in the main joining step.

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, further comprising a temporary joining step of temporarily joining the butted portions 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、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、
前記ベース部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、
前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、
前記本接合工程では、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みに接触させつつ、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い、
前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、
前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする伝熱板の製造方法。 A closing step of superposing a lid plate on the surface of the base member so as to cover the concave groove or the concave portion opened on the surface of the base member,
Insert a full-joining rotary tool having a proximal pin and a distal pin from the surface of the lid plate, and move the full-joining rotary tool along an overlapping portion between the surface of the base member and the back surface of the lid plate. A main joining step of relative movement,
A correction step of relatively moving a rotation tool for correction having a proximal pin and a distal pin with respect to the back surface of the base member to perform frictional stirring,
The taper angle of the proximal-side pin of the main joining rotary tool and the correction rotary tool is larger than the taper angle of the distal-side pin,
A step-shaped step portion is formed on the outer peripheral surface of the base end side pin,
In the final joining step, the distal end pin of the rotated final joining rotary tool is inserted into the surface of the lid plate, and the outer peripheral surface of the proximal end pin is brought into contact with only the lid plate, while the distal end pin is rotated. Both the base member and the lid plate, or friction stir of the overlapping portion in a state of contacting only the lid plate,
In the straightening step, insert the distal pin of the rotating rotary tool for rotation into the back surface of the base member, perform frictional stirring in a state where the outer peripheral surface of the proximal pin is in contact with only the base member,
A method for manufacturing a heat transfer plate, wherein a heat input amount in the correction step is smaller than a heat input amount in 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、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、
前記蓋板の表面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、
前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、
前記本接合工程では、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みに接触させつつ、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い、
前記矯正工程において、回転した前記矯正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みに接触させた状態で摩擦攪拌を行い、
前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする伝熱板の製造方法。 A closing step of superposing a lid plate on the surface of the base member so as to cover the concave groove or the concave portion opened on the surface of the base member,
Insert the full-joining rotary tool provided with a base-side pin and a distal-side pin from the back surface of the base member, and move the full-joint rotating tool along the overlapping portion between the surface of the base member and the back surface of the lid plate. A main joining step of relative movement,
A correction step of relatively moving a correction rotation tool having a proximal pin and a distal pin with respect to the surface of the lid plate to perform frictional stirring,
The taper angle of the proximal-side pin of the main joining rotary tool and the correction rotary tool is larger than the taper angle of the distal-side pin,
A step-shaped step portion is formed on the outer peripheral surface of the base end side pin,
In the main joining step, the distal end pin of the rotated main joining rotating tool is inserted into the back surface of the base member, and the outer peripheral surface of the base end pin is brought into contact with only the base member, while the distal end pin is Both the base member and the lid plate, or friction stir of the overlapping portion in a state of contacting only the base member,
In the straightening step, insert the distal end pin of the rotating rotating tool for rotation into the surface of the lid plate, perform frictional stirring in a state where the outer peripheral surface of the proximal end pin is in contact with only the lid plate,
A method for manufacturing a heat transfer plate, wherein a heat input amount in the correction step is smaller than a heat input amount in the main joining step.

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 producing a heat transfer plate according to claim 4, further comprising a temporary joining step of temporarily joining the overlapping portions before the main joining step.

前記本接合工程及び矯正工程の終了後、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 heat transfer plate manufacturing according to any one of claims 1 to 6, further comprising a burr cutting step of cutting a burr generated by friction stirring after the completion of the main joining step and the straightening step. Method.

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、
一方の前記金属部材の裏面に対して基端側ピンと先端側ピンとを備えた矯正用回転ツールを相対移動させて摩擦攪拌を行う矯正工程と、を含み、
前記本接合用回転ツール及び前記矯正用回転ツールの前記基端側ピンのテーパー角度は、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階段状の段差部が形成されており、
前記本接合工程において、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みに接触させつつ、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い、
前記矯正工程において、回転した前記矯正用回転ツールの先端側ピンを他方の前記金属部材の裏面に挿入し、前記基端側ピンの外周面を当該裏面に接触させた状態で摩擦攪拌を行い、
前記本接合工程における入熱量よりも、前記矯正工程における入熱量を小さくすることを特徴とする摩擦攪拌接合方法。 A friction stir welding method of joining two metal members using a rotating tool for final joining comprising a proximal pin and a distal pin,
A superposed portion forming step of forming a superposed portion by superimposing the front surface of one of the metal members and the back surface of the other metal member,
A main joining step of inserting a tip pin of the main joining rotary tool rotated from the surface of the other metal member, and relatively moving the main joining rotary tool along the overlapping portion to perform frictional stirring;
A correction step of relatively moving a rotation tool for correction having a proximal pin and a distal pin with respect to the back surface of one of the metal members to perform frictional stirring,
The taper angle of the proximal-side pin of the main joining rotary tool and the correction rotary tool is larger than the taper angle of the distal-side pin,
A step-shaped step portion is formed on the outer peripheral surface of the base end side pin,
In the main joining step, inserting the distal pin of the rotated main joining rotary tool into the surface of the other metal member, while contacting the outer peripheral surface of the base pin only with the other metal member, In the state where the tip side pin is in contact with both the one metal member and the other metal member, or only the other metal member, friction stirs the overlapping portion,
In the straightening step, the tip pin of the rotated rotating tool for rotation is inserted into the back surface of the other metal member, and friction stirring is performed in a state where the outer peripheral surface of the base pin is in contact with the back surface,
A friction stir welding method, wherein the heat input amount in the correction step is smaller than the heat input amount in the main joining step.

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。 9. The friction stir welding method according to claim 8, further comprising a temporary joining step of temporarily joining the overlapping portions before the main joining step.

前記本接合工程及び矯正工程の終了後、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, further comprising: after completion of the main joining step and the correction step, removing a burr generated by friction stirring.