JP2005262292A - Welding equipment for thin sheet cylindrical tube - Google Patents

Welding equipment for thin sheet cylindrical tube Download PDF

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JP2005262292A
JP2005262292A JP2004080833A JP2004080833A JP2005262292A JP 2005262292 A JP2005262292 A JP 2005262292A JP 2004080833 A JP2004080833 A JP 2004080833A JP 2004080833 A JP2004080833 A JP 2004080833A JP 2005262292 A JP2005262292 A JP 2005262292A
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welding
thin
thin sheet
insert
mandrel
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JP4466144B2 (en
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Keiichi Nemoto
圭一 根本
Masamichi Toyoda
正道 豊田
Houchi Yuki
芳智 結城
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide welding equipment for a thin sheet cylindrical tube by which a thin sheet cylinder is welded while the defect on welding in the weld zone and the damaging of the inside face in the weld zone can be effectively prevented. <P>SOLUTION: In the equipment, 1 is a thin sheet cylinder using stainless steel, an Inconel alloy or the like having a melting point of about 1,400°C as the stock, and worked into a cylindrical shape; 2 is a welding mandrel composed of steel; 3 is an insert mounted on the welding support part of the welding mandrel 2; 4a and 4b are a pair of pressure members freely movable forwards and backwards and butting both side edge parts in the longitudinal direction of the thin sheet cylinder 1 at the time of welding; 5 is a welding torch fixed to the welding direction (axial direction) and supported freely ascendable and descendable. In the insert 3, an injection hole 6 for jetting inert gas toward the weld zone 1x in the thin sheet cylinder 1 is formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、薄板円筒管の溶接装置に係わり、更に詳しくは、例えば、薄板のベローズ素管等の薄板円筒管の両側縁部を溶接する際に、その溶接部の溶接不良や、内面の傷付きを有効に防止した薄板円筒管の溶接装置に関するものである。   The present invention relates to a welding apparatus for a thin cylindrical tube, and more specifically, for example, when welding both side edges of a thin cylindrical tube such as a thin bellows element pipe, the welding defect of the welded portion or damage to the inner surface. The present invention relates to a welding apparatus for a thin cylindrical tube that effectively prevents sticking.

従来、薄板のベローズ素管を溶接する工程では、融点１４００°Ｃ前後のステンレスやインコネル（ニッケル系合金）等を素材とする薄平板をくせ付けロールにより円筒管となるように加工し、この薄板円筒体を鋼材から成る円柱状の溶接マンドレル及び溶接マンドレルとに装着したインサートに挿入させてセットする。   Conventionally, in the process of welding a thin plate bellows tube, a thin plate made of stainless steel, Inconel (nickel alloy) or the like having a melting point of about 1400 ° C. is processed into a cylindrical tube by a kneading roll. The cylindrical body is set by being inserted into a cylindrical welding mandrel made of steel and an insert attached to the welding mandrel.

その後、前記薄板円筒体の長手方向の両側縁部を一対の抑え部材等により突き合わせた状態で、薄板円筒体または溶接トーチの少なくとも一方を移動させて前記突き合わせた両側縁部を溶接する方法が行われている（例えば、特許文献１参照）。   Thereafter, in a state in which both side edges in the longitudinal direction of the thin plate cylinder are butted together by a pair of holding members or the like, at least one of the thin plate cylinder or the welding torch is moved to weld the butted both side edges. (For example, refer to Patent Document 1).

上記の溶接マンドレルのインサートは、製品の摺動性や製品の強度等を考慮して一般に融点が約６５０°Ｃのアルミ材料で形成されている。このため、溶接時に薄板円筒体の融点がインサートのアルミ材融点を超えてしまうことがあり、その結果、溶接後のＸ線検査等の結果、溶接ビード部近傍で、かつ薄板円筒体の内側に傷が発生する現象があった。このような傷付きの発生要因等を検証すると、インサートを構成するアルミ材料が溶融し、その介在物が溶接部に巻き込んで傷を付けることが判った。
特開２００３−１８１５３２号公報 The welding mandrel insert is generally made of an aluminum material having a melting point of about 650 ° C. in consideration of the slidability of the product, the strength of the product, and the like. For this reason, the melting point of the thin plate cylindrical body may exceed the aluminum melting point of the insert during welding. As a result, the X-ray inspection after welding results in the vicinity of the weld bead and inside the thin plate cylindrical body. There was a phenomenon of scratches. Examining the cause of such damage, etc., it was found that the aluminum material constituting the insert melts and the inclusions are wound around the welded portion and damaged.
JP 2003-181532 A

この発明はかかる従来の問題点に着目し、薄板円筒体を溶接する際、その溶接部の溶接不良や溶接部内面の傷付きを有効に防止した薄板円筒管の溶接装置を提供することを目的とするものである。   This invention pays attention to such a conventional problem, and an object of the present invention is to provide a welding apparatus for a thin plate cylindrical tube that effectively prevents welding defects in the welded portion and scratches on the inner surface of the welded portion when welding the thin plate cylindrical body. It is what.

この発明は上記目的を達成するため、溶接マンドレルに装着するインサートの材料を、少なくとも前記薄板円筒体の融点以上の材料により構成したことを要旨とするものである。   In order to achieve the above object, the gist of the present invention is that the material of the insert attached to the welding mandrel is composed of at least a material having a melting point higher than that of the thin plate cylindrical body.

ここで、前記薄板円筒管の材料を、鉄系合金またはニッケル系合金とした場合、インサートの材料を、グラファイトにするものであり、また前記インサートは、溶接マンドレルと一体、または着脱可能に構成するものである。   Here, when the material of the thin plate cylindrical tube is an iron-based alloy or a nickel-based alloy, the material of the insert is graphite, and the insert is configured to be integral with or removable from the welding mandrel. Is.

このように、インサートの材料を、少なくとも前記薄板円筒体の融点以上の材料により構成することで、薄板円筒体を溶接する際、その溶接部の溶接不良や溶接部内面の傷付きを有効に防止できるものである。   As described above, the insert material is made of at least the melting point of the thin cylindrical body, so that when welding the thin cylindrical body, it is possible to effectively prevent welding defects in the welded portion and scratches on the inner surface of the welded portion. It can be done.

この発明は、上記のように溶接マンドレルに装着するインサートの材料を、少なくとも前記薄板円筒体の融点以上の材料により構成したので、薄板円筒管を溶接する際、その溶接部の溶接不良や、その溶接部の溶接不良や溶接部内面の傷付きを有効に防止でき、コスト低減を図ることが出来る効果がある。   In the present invention, since the material of the insert to be attached to the welding mandrel is composed of at least the melting point of the thin plate cylindrical body as described above, when welding the thin plate cylindrical pipe, It is possible to effectively prevent welding defects in the welded portion and scratches on the inner surface of the welded portion, thereby reducing costs.

以下、添付図面に基づき、この発明の実施形態を説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は、この発明を実施した薄板のベローズ素管等の薄板円筒管の溶接装置の一部斜視図、図２は縦断正面図を示し、１は融点１４００°Ｃ前後のステンレス合金やインコネル合金（ニッケル系合金）等を素材とする円管状に加工した薄板円筒体、２は鋼材から成る溶接マンドレル、３は溶接マンドレル２の溶接支持部に装着したインサート、４ａ，４ｂは溶接時に薄板円筒体１の長手方向の両側縁部１ａを突き合わせる一対の進退可能な抑え部材、５は溶接方向（軸線方向）には固定され、昇降可能に支持された溶接トーチを示し、前記インサート３には、薄板円筒体１の溶接部１ｘに向かって不活性ガスを噴出させる噴出穴６が形成されている。   FIG. 1 is a partial perspective view of a welding apparatus for a thin cylindrical tube such as a thin bellows element pipe embodying the present invention, FIG. 2 is a longitudinal front view, and 1 is a stainless alloy or inconel alloy having a melting point of around 1400 ° C. A thin plate cylinder processed into a circular tube made of (nickel alloy) or the like, 2 is a welding mandrel made of steel, 3 is an insert attached to a weld support portion of the welding mandrel 2, 4a and 4b are thin plate cylinders during welding A pair of advanceable / retractable holding members 5 that abut both side edges 1a in the longitudinal direction of 1 are fixed in the welding direction (axial direction) and indicate a welding torch supported so as to be movable up and down. A jet hole 6 through which an inert gas is jetted toward the welded portion 1x of the thin plate cylindrical body 1 is formed.

この発明の実施形態では、前記溶接マンドレル２に装着するインサート３の材料を、前記薄板円筒体１の融点に耐え得る材料により構成し、具体的には、薄板円筒体１の材料を、鉄系合金またはニッケル系合金とした場合、インサート３の材料を、グラファイトにするものである。   In an embodiment of the present invention, the material of the insert 3 attached to the welding mandrel 2 is made of a material that can withstand the melting point of the thin plate cylinder 1, and specifically, the material of the thin plate cylinder 1 is made of an iron-based material. When an alloy or a nickel-based alloy is used, the insert 3 is made of graphite.

前記鉄系合金とは、ステンレス鋼、ステンレス合金、マルエージ鋼、マルエージステンレス鋼等に例示される主に鉄を主成分とする合金を挙げることが出来る。また、ニッケル系合金とは、ニッケル基耐食耐熱超合金であるインコネル合金、鉄−ニッケル基合金を含んでいるインコロイ合金等に例示される主にニッケルを主成分、ニッケル及び鉄を主成分とする合金を挙げることが出来る。   Examples of the iron-based alloy include alloys mainly composed of iron exemplified by stainless steel, stainless alloy, maraging steel, maraging stainless steel and the like. Nickel-based alloys include nickel-based corrosion-resistant heat-resistant superalloys such as Inconel alloys, in-colloy alloys containing iron-nickel-based alloys, and the like. An alloy can be mentioned.

また前記インサート３は、溶接マンドレル２と一体的に形成したり、または溶接マンドレル２に対して着脱可能に構成することも可能である。   The insert 3 can be formed integrally with the welding mandrel 2 or can be detachable from the welding mandrel 2.

更に、断面円形状の溶接マンドレル２は、薄板円筒体１の内径と一致する曲率が好ましいが、必ずしも一致しなくても良い。   Furthermore, the welding mandrel 2 having a circular cross section preferably has a curvature that matches the inner diameter of the thin plate cylinder 1, but does not necessarily have to match.

上記のような溶接装置により薄板のベローズ素管等の薄板円筒管の製造方法について説明する。   A method of manufacturing a thin cylindrical tube such as a thin bellows base tube using the above welding apparatus will be described.

先ず、融点１４００°Ｃ前後のステンレス合金やインコネル合金（ニッケル系合金）等を素材とする薄平板を図示しないくせ付けロールにより円筒管となるように加工し、この薄板円筒体１を鋼材から成る円柱状の溶接マンドレル２と、溶接マンドレル２に装着したグラファイトを素材としたインサート３に挿通させてセットする。   First, a thin flat plate made of a stainless steel alloy or inconel alloy (nickel alloy) having a melting point of around 1400 ° C. is processed into a cylindrical tube by a not-shown kneading roll, and the thin plate cylindrical body 1 is made of steel. A cylindrical welding mandrel 2 and an insert 3 made of graphite mounted on the welding mandrel 2 are inserted and set.

その後、前記薄板円筒体１の長手方向の両側縁部１ａを一対の抑え部材４ａ，４ｂにより突き合わせた状態にし、その上から溶接トーチ５の先端を下降させて、前記薄板円筒体１を長手方向に移動させながさ突き合わせた両側縁部１ａを溶接するのである。   Thereafter, both side edges 1a in the longitudinal direction of the thin plate cylinder 1 are brought into contact with each other by a pair of holding members 4a and 4b, the tip of the welding torch 5 is lowered from above, and the thin plate cylinder 1 is moved in the longitudinal direction. The both side edges 1a are welded while being moved to each other.

なお、この時、薄板円筒体１を固定した状態で溶接トーチ５を薄板円筒体１の溶接部１ｘに沿って移動させながら溶接することも可能である。   At this time, it is also possible to perform welding while moving the welding torch 5 along the welded portion 1x of the thin plate cylinder 1 with the thin plate cylinder 1 fixed.

このように、インサート３の材料を、前記薄板円筒体１の融点に耐え得る材料、即ち、グラファイトにより構成することで、薄板円筒体１を溶接する際、その溶接部１ｘの溶接不良や、溶接部の内面の傷付きを有効に防止できるものである。   Thus, when the material of the insert 3 is made of a material that can withstand the melting point of the thin plate cylinder 1, that is, graphite, when the thin plate cylinder 1 is welded, welding failure of the welded portion 1 x or welding It is possible to effectively prevent damage to the inner surface of the part.

以上のように、インサート３の材料を、グラファイトに変更することで、図３に示すように溶接後の溶接部１ｘをＸ線検査しても、傷が発生していないことが確認された。   As described above, by changing the material of the insert 3 to graphite, it was confirmed that no flaw was generated even when the welded portion 1x after welding was subjected to X-ray inspection as shown in FIG.

この発明を実施した薄板のベローズ素管等の薄板円筒管の溶接装置の一部斜視図である。1 is a partial perspective view of a welding apparatus for a thin cylindrical tube such as a thin bellows blank pipe embodying the present invention. 溶接装置の縦断正面図である。It is a vertical front view of a welding apparatus. 薄板円筒管の溶接部の拡大断面図である。It is an expanded sectional view of the welding part of a thin plate cylindrical tube.

符号の説明Explanation of symbols

１ 薄板円筒体 １ａ 両側縁部
１ｘ 溶接部 ２ 溶接マンドレル
３ インサート ４ａ，４ｂ 抑え部材
５ 溶接トーチ ６ 噴出穴
DESCRIPTION OF SYMBOLS 1 Thin cylindrical body 1a Both-sides edge part 1x Welding part 2 Welding mandrel 3 Insert 4a, 4b Holding member 5 Welding torch 6 Ejection hole

Claims (3)

薄板を円筒状となるように加工し、この薄板円筒体を円柱状の溶接マンドレル及びこの溶接マンドレルに装着されたインサートに挿通させてセットした後、前記薄板円筒体の長手方向の両側縁部を突き合わせた状態で、薄板円筒体または溶接トーチの少なくとも一方を軸方向に移動させて前記突き合わせた両側縁部を溶接する薄板円筒管の溶接装置において、
前記溶接マンドレルに装着するインサートの材料を、少なくとも前記薄板円筒体の融点以上の材料により構成したことを特徴とする薄板円筒管の溶接装置。 After processing the thin plate into a cylindrical shape and inserting the thin plate cylindrical body through a columnar welding mandrel and an insert attached to the welding mandrel, both side edges in the longitudinal direction of the thin plate cylindrical body are set. In the welding apparatus of the thin-plate cylindrical pipe which welds the both-side edges of the butted surfaces by moving at least one of the thin-plate cylindrical body or the welding torch in the axial direction in the butted state,
An apparatus for welding a thin cylindrical tube, characterized in that a material of an insert attached to the welding mandrel is made of a material having a melting point higher than that of the thin cylindrical member. 前記薄板円筒管の材料を、鉄系合金またはニッケル系合金とした場合、インサートの材料を、グラファイトにした請求項１に記載の薄板円筒管の溶接装置。 The apparatus for welding a thin cylindrical tube according to claim 1, wherein when the material of the thin cylindrical tube is an iron-based alloy or a nickel-based alloy, the insert material is graphite. 前記インサートは、溶接マンドレルと一体、または着脱可能に構成した請求項１に記載の薄板円筒管の溶接装置。
The thin plate cylindrical tube welding apparatus according to claim 1, wherein the insert is configured to be integral with or removable from the welding mandrel.
JP2004080833A 2004-03-19 2004-03-19 Thin cylindrical pipe welding equipment Expired - Fee Related JP4466144B2 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103753011A (en) * 2014-01-13 2014-04-30 太原太航科技有限公司 Fixture utilizing electron-beam welding machine to weld ultrathin-walled tubes and welding process thereof
CN107378289A (en) * 2017-07-28 2017-11-24 江苏宝金来管道成套设备有限公司 Ultra-thin bellows-welding technique
CN107442920A (en) * 2017-08-01 2017-12-08 中国船舶重工集团公司第七二五研究所 A kind of thin-wall barrel high energy beam precision welding frock and welding method
CN107931946A (en) * 2018-01-23 2018-04-20 蚌埠捷顺机器有限公司 A kind of wheel rim fixture
CN108188635A (en) * 2018-01-23 2018-06-22 蚌埠捷顺机器有限公司 A kind of fixing device for being used to weld wheel rim
CN108723647A (en) * 2018-05-30 2018-11-02 芜湖同创模具机械有限公司 A kind of high duty metal pipe welder
CN108747102A (en) * 2018-05-30 2018-11-06 芜湖同创模具机械有限公司 A kind of anti-welding fluid prolongs the metal tube welder of stream
CN113070600A (en) * 2021-04-09 2021-07-06 南通职业大学 Thin-wall cylinder welding method and thin-wall cylinder welding tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103753011A (en) * 2014-01-13 2014-04-30 太原太航科技有限公司 Fixture utilizing electron-beam welding machine to weld ultrathin-walled tubes and welding process thereof
CN107378289A (en) * 2017-07-28 2017-11-24 江苏宝金来管道成套设备有限公司 Ultra-thin bellows-welding technique
CN107442920A (en) * 2017-08-01 2017-12-08 中国船舶重工集团公司第七二五研究所 A kind of thin-wall barrel high energy beam precision welding frock and welding method
CN107442920B (en) * 2017-08-01 2020-03-17 中国船舶重工集团公司第七二五研究所 High-energy beam precision welding tool and welding method for thin-wall cylindrical body
CN107931946A (en) * 2018-01-23 2018-04-20 蚌埠捷顺机器有限公司 A kind of wheel rim fixture
CN108188635A (en) * 2018-01-23 2018-06-22 蚌埠捷顺机器有限公司 A kind of fixing device for being used to weld wheel rim
CN108723647A (en) * 2018-05-30 2018-11-02 芜湖同创模具机械有限公司 A kind of high duty metal pipe welder
CN108747102A (en) * 2018-05-30 2018-11-06 芜湖同创模具机械有限公司 A kind of anti-welding fluid prolongs the metal tube welder of stream
CN108747102B (en) * 2018-05-30 2020-08-21 芜湖同创模具机械有限公司 Metal pipe welding device capable of preventing welding liquid from flowing along
CN113070600A (en) * 2021-04-09 2021-07-06 南通职业大学 Thin-wall cylinder welding method and thin-wall cylinder welding tool

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