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Method of laser welding metal plate

A laser welding and sheet metal technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of waste of raw materials, high cost, complicated process, etc., achieve good welding quality, improve success rate, width and melting deep fit effect

Inactive Publication Date: 2017-11-21
WUHAN TIANQI LASER EQUIP MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sheet metal is a relatively common raw material in laser welding. In traditional laser welding, the materials to be welded are usually liquefied and fused together to form the occlusal area. However, the process of this method is more complicated, the cost is higher, and it will cause a lot of waste of raw materials

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  • Method of laser welding metal plate

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0030] see figure 1 As shown, the embodiment of the present invention provides a method for laser welding sheet metal, the welding torch used is semiconductor laser and CO 2 Laser compound welding torch, wherein, CO 2 The laser spot is located within the semiconductor laser spot, and the semiconductor laser and CO 2 The direction of the slow axis of the laser is consistent, when welding, CO 2 The laser is located in the normal welding position, the semiconductor laser is located on one side of the weld, and the semiconductor laser is focused on the sheet metal by CO 2 on the molten pool produced by the laser.

[0031] The method includes the following steps:

[0032] S1. Clean the surface of the workpiece to be welded, remove oil, rust and other attachments, and prevent attachments from entering the welding area during the welding process...

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Abstract

The invention discloses a method of laser welding a metal plate and relates to the field of laser cutting. The method comprises the following steps of: forming a protective layer in a welding region to isolate air, igniting arcs between an electrode and a to-be-welded workpiece, and determining the arc length L1: L=1-1.5n, wherein L is smaller than or equal to 6mm and the extending length of a tungsten electrode L2: in butt welding, L2 is 5-6mm; in angle welding, L2 is 7-8mm; adjusting the inclination angle between a welding gun and the surface of a weldment to 70-85 degrees, and forming a bright bath for a to-be-welded piece, wherein the inclination angle between a welding stick at the front end of the bath and the weldment is 15-20 degrees, the extending length of the tungsten electrode is 2-4mm, the distance between the tungsten electrode and the surface of the weldment is 2-4mm, and the moving speed of the welding gun is 150-300mm / min; and heating a to-be-welded metal by arc heat and smelting a filler wire to connect to-be-welded pieces together. The method disclosed by the invention can increase the welding rate and lower the cutting cost.

Description

technical field [0001] The invention relates to the field of laser cutting, in particular to a method for laser welding sheet metal. Background technique [0002] Laser welding uses the laser beam as a heat source and impacts it on the joint of the weldment for welding. Due to the high energy density of the laser beam, it can accurately impact the part to be welded. Therefore, laser welding has gradually been recognized. It is used in automobiles, food, Electronics and other fields are widely used. [0003] Sheet metal is a relatively common raw material in laser welding. In traditional laser welding, the materials to be welded are usually liquefied and fused together to form the occlusal area. However, the process of this method is more complicated, the cost is higher, and it will cause A lot of waste of raw materials. Contents of the invention [0004] In view of the defects existing in the prior art, the object of the present invention is to provide a method for laser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/348
CPCB23K26/348
Inventor 胡中元林丛春
Owner WUHAN TIANQI LASER EQUIP MFG
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