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Induction heating and friction stir combined welding method and device for steel butt joint

An induction heating device and friction stir welding technology, applied in welding equipment, high-frequency current welding equipment, non-electric welding equipment, etc., can solve the problems of high cost, unstable quality, and low life of the stirring head, so as to prolong the life and reduce the Welding cost, solve the effect of low life of the stirring head

Active Publication Date: 2018-04-06
一重集团天津重工有限公司
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Problems solved by technology

[0004] According to the above-mentioned technical problems, an induction heating-friction stir composite welding method and device for steel butt joints are provided, which are used to solve the existing welding method, friction stir welding of high melting point materials such as steel, and have the advantages of low service life of the stirring head and low cost. High, unstable quality and other issues

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  • Induction heating and friction stir combined welding method and device for steel butt joint
  • Induction heating and friction stir combined welding method and device for steel butt joint

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Embodiment Construction

[0024] Such as figure 1 with figure 2 As shown, a steel butt joint induction heating-friction stir welding method, before welding, clean up the welding area of ​​the butt joint end surface and the upper and lower end surfaces of the steel plate 1 to be welded, the welding area is determined according to the thickness of the test plate, and the oxidation of the steel plate to be welded is removed Use an organic solvent to wipe the surface of the mechanically treated steel plate 1 to remove metal dust and oil stains, place the steel plate 1 on the workbench in a docking manner, and fix it rigidly with a clamp.

[0025] The welding direction of the stirring head 3 used for friction stir welding is provided with an induction heating device 2 for inductively heating the workpiece 1 to be welded, and the induction heating device 2 is fixed on the welding arm where the stirring head 3 is located through a connecting device 4, The stirring head 3 and the induction heating device 2 a...

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Abstract

The invention discloses an induction heating and friction stir combined welding method and device for steel butt joint. An induction heating device is arranged in the welding direction of a stir headfor friction stir welding, wherein the induction heating device is used for conducting induction heating on a to-be-welded workpiece. The induction heating device is fixed to a welding arm where the stir head is located through a connecting device, so that the stir head and the induction heating device move synchronously for welding in the welding process. According to the induction heating and friction stir combined welding method and device for steel butt joint, in the welding process, the to-be-welded workpiece is fully preheated in a preheating area in front of the stir head through heat generate by the induction heating device; the stir head which rotates at the high speed is pressed therein along the butt-joint face of the to-be-welded workpiece, so that welding is achieved; induction heating is adopted as an auxiliary heating heat source, so that reliable connection of steels is achieved; welding quality can be guaranteed, and the service life of the stir head can be prolonged;welding cost is lowered; and the induction heating and friction stir combined welding method is a friction stir welding method with induction heating as the auxiliary heat source.

Description

technical field [0001] The invention relates to the field of welding, and relates to a friction stir welding method and device for induction heating of steel butt joints to assist in softening workpieces to be welded. Background technique [0002] At present, friction stir welding technology is a very ideal solid-phase welding technology. Compared with traditional welding methods, it has the characteristics of high quality, high efficiency, low consumption, small welding deformation, and no pollution, especially in thin plate welding. Welding methods are far from comparable, and have been widely used in shipbuilding, aerospace, rail transit and other fields. [0003] Compared with low-melting-point materials such as aluminum alloy, the friction stir welding of steel requires more heat during welding, and puts forward higher requirements for the high-temperature wear resistance and toughness of the stirring head. The manufacturing cost of the advanced stirring head (polycrys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K20/12B23K13/01
CPCB23K13/01B23K20/122B23K28/02
Inventor 谷文谷松伟谷丰
Owner 一重集团天津重工有限公司
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