Combined welding method of laser + plasma arc + tig arc

A technology of plasma arc and welding method, which is applied in the field of combined welding of ion arc + TIG arc, which can solve the problems of plate thickness limitation, insufficient stability of back penetration, and slow welding speed, etc., to achieve increased welding speed and improved stability of back penetration , The effect of welding process stability

Active Publication Date: 2020-08-11
哈尔滨现代焊接技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a combined welding method of laser+plasma arc+TIG arc. In order to solve the problem of welding of stainless steel medium and thin plates, under the condition of not filling the welding material, the plasma arc welding method without opening the groove is adopted, and the welding speed slow, the back penetration is not stable enough, and the plate thickness that can be welded is also limited, so a combined laser + plasma arc + TIG arc welding method is provided

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  • Combined welding method of laser + plasma arc + tig arc

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Embodiment 1

[0015] A laser+plasma arc+TIG arc combined welding method, the composition of the method comprises a laser beam 1, a plasma arc 2, and a TIG arc 3, and the combined welding method is used to butt the stainless steel medium and thin plates without opening a groove. The movement speed of the three is the same, and the relative position does not change;

[0016] The specific steps are as follows: First, the position arrangement, the laser beam is in the front, relying on good penetration ability to ensure good penetration of the back of the weld, the plasma arc is in the middle, and the TIG arc is behind; the welding process The laser beam and the plasma arc described above act on the same molten pool, which is responsible for providing enough heat to melt the metal. The plasma formed by laser welding has the characteristics of a stable plasma arc, which greatly increases the welding speed. Ensure good penetration on the back of the joint; TIG arc behind, provide heat, slow down ...

Embodiment 2

[0020] According to the combined welding method of laser+plasma arc+TIG arc described in embodiment 1, the described laser power is 5-30kW, the plasma arc current is 150-400A, the TIG arc current is 100-300A, and the stainless steel plate The thickness is 4mm-30mm.

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Abstract

A laser + plasma arc + TIG arc joint welding method is disclosed. When welding stainless steel thin plates, a plasma arc welding method employing butt joint without beveling is often used under the condition that welding materials are filled. This welding method has a slow welding speed, the back welding penetration is not stable enough, and the thickness of the welded plate is also limited. The composition of the welding method comprises a laser beam (1), a plasma arc (2) and a TIG arc (3). The joint welding method is used to butt the thin plate of the stainless steel without beveling. Duringwelding, the movement speeds of the three are the same, and the relative position remains the same. The laser beam is in front, the plasma arc is in the middle, and the TIG arc is at last. The laserbeam and the plasma arc act on a same molten pool during the welding process, thereby improving the welding speed while ensuring good penetration of the back of a joint. Since the TIG arc is at last,a beautiful weld seam is formed while ensuring the purity of the weld. The invention applicable to a laser + plasma arc + TIG arc joint welding method.

Description

technical field [0001] The invention relates to a plasma arc welding method, in particular to a combined welding method of laser + plasma arc + TIG arc. Background technique [0002] When welding stainless steel medium and thin plates, under the condition of no filling welding material, the plasma arc welding method without groove opening is often used. This welding method has slow welding speed, and the back penetration is not stable enough, and the plate thickness that can be welded is also limited. limit. In order to solve this problem, simply increasing the energy of the plasma arc can no longer meet the requirements. Laser welding has outstanding advantages such as strong penetrating ability and strong ability to stabilize the arc of the laser beam. TIG arc has the advantages of energy dispersion, uniform heat, and high weld purity. Features, the combination of laser beam + plasma arc + TIG arc can not only ensure the stability and penetration of the arc during high-sp...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B23K26/348
CPCB23K26/348
Inventor徐良杨海锋王旭友徐富家滕彬李荣李洪伟
Owner哈尔滨现代焊接技术有限公司