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Method for welding components

A technology for welding components and components, applied in welding equipment, laser welding equipment, welding/welding/cutting items, etc., can solve problems such as strong porosity, high corrosion risk, and non-volatile zinc

Active Publication Date: 2018-12-21
BAYERISCHE MOTOREN WERKE AG
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the metal sheets to be welded against each other, the evaporated zinc cannot easily come out of the abutment area of ​​the metal sheets and volatilize into the environment, which can lead to higher zinc deposits in the molten metal and thus lead to unsafe Desirably strong porosity, perforation, or may cause ejecta and spatter
[0005] Laser beam welding has thus far been only possible for quality reasons in "dry" areas, but not in components or component areas which are largely exposed to moisture or water spray, Because here the corrosion risk has hitherto been considered too high

Method used

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  • Method for welding components
  • Method for welding components

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Embodiment Construction

[0038] figure 1 Shows two metal plates 1, 2 abutting against each other, the thickness of metal plate 1 is S 1 And the thickness of metal plate 2 is S 2 . S 1 or S 2 For example in the range between 0.3 mm and 3 mm. In the edge region of the metal sheet 1 , the two metal sheets 1 , 2 are already welded to one another by a fillet weld 3 . However, prior welding via the fillet weld 3 is not necessarily necessary.

[0039] By means of a laser welding device 4 which generates a laser beam 5 , the two metal sheets 1 , 2 are additionally welded to one another via a butt weld 6 .

[0040] The laser welding device 4 is operated in a pulsed manner, ie by switching the laser beam 5 on and off periodically, a number of welding pulses are successively generated, which are each interrupted by non-welding pause intervals.

[0041] Through this pulsed welding, the ball 7 can also be welded to the component 1 . The ball 7 can be connected to the component 1 by a number of welding poin...

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Abstract

The invention relates to a method for welding components (1, 2) comprising the following steps: providing a first component (1) and a second component (2); bringing together the two components (1, 2);welding the two components (1, 2) by means of a laser beam (5), wherein a plurality of welding impulses are generated through the repeated activation and deactivation of the laser beam (5), with eachwelding impulse being interrupted by welding-free rest intervals in which the laser beam (5) is deactivated, wherein a local welding area (11-22) is generated by each welding impulse, in which material of the two components (1, 2) is melted and fused in a locally limited manner, wherein individual welding areas (11-22) of those generated by the welding impulses overlap.

Description

technical field [0001] The invention relates to a method for welding components according to the preamble of claim 1 . Background technique [0002] Such a method is known from the earlier, non-prepublished German patent application DE 102016206012.0. In this earlier, non-prepublished German patent application, the welding of two body parts by means of a pulsed laser beam is described. [0003] Welding of sheet metal components by means of laser beams has been known for a long time. The laser beam is usually operated with a continuous feed movement relative to the two components to be welded to one another, which leads to melting and fusing of the materials of the two components. The laser beam draws a "melt tail" of several millimeters (eg 10 mm) behind it due to its feed movement, ie the material is still liquid in the region of several millimeters behind the current position of the laser beam. [0004] Welding of galvanized steel sheets is particularly problematic. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/22B23K26/06B23K26/062B23K26/0622B23K26/322B23K26/324B23K26/323B23K26/26B23K26/242B23K26/244B23K101/00B23K103/00B23K101/34B23K103/20B23K103/06
CPCB23K26/0626B23K26/22B23K26/26B23K26/322B23K26/324B23K26/323B23K26/242B23K26/062B23K26/244B23K2101/006B23K2101/34B23K2103/06B23K2103/20B23K2103/42B23K26/0622
Inventor J·尼凯克A·格林M·哈默
Owner BAYERISCHE MOTOREN WERKE AG
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