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Method for welding light and solid sheets with laser beams

A technology for welding materials and plates, used in laser welding equipment, chemical instruments and methods, welding equipment, etc., can solve problems such as process technical difficulties and long hardening time, and achieve the effect of preventing damage

Active Publication Date: 2018-09-21
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, however, this method presents process-technical difficulties (longer hardening times, precise adhesive application, additional weight, movement of components during handling)

Method used

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  • Method for welding light and solid sheets with laser beams
  • Method for welding light and solid sheets with laser beams
  • Method for welding light and solid sheets with laser beams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] attached figure 1 The geometry of the welded connection between the lightweight sheet 1 and the solid sheet 3 is shown in cross-section. The lightweight panel 1 has two cover sheets 5 and a core layer in the form of a plastic layer 7 arranged in the shape of a sandwich between the cover sheets. For example, each cover plate 5 is made of galvanized steel sheet, and the core layer 7 is made of a polymeric material. The solid sheet 3 is a galvanized steel sheet. Lightweight panels 1 and solid panels 3 are provided in a crimped form.

[0039] By means of the welding material 9 , the lightweight sheet metal 1 and the solid sheet metal 3 are connected to each other at the welding point 11 in such a way that a cohesive connection is formed. A weld extending in the x-direction is produced, for example, by continuously advancing the welding point position 11 in the x-direction of the xyz coordinate system shown in the drawing.

[0040] as attached figure 1 As shown, the wel...

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Abstract

The invention relates to a method for welding a lightweight sheet (1) and a solid sheet (3), the lightweight sheet having two sheet layers (5) and a plastic layer (7) arranged between the sheet layers, wherein The energy input is carried out on the welding point (11) by the energy beam and the position of the light sheet side of the welding point (11) passes the welding material (9) with the position (15) material of the solid sheet side of the welding point (11) Fittingly connected, and wherein the energy input varies in space such that the energy input at the position (13) on the light sheet side of the welding point (11) is more intense than at the position (15) on the solid sheet side of the welding point few.

Description

technical field [0001] The present invention relates to a method for joining two workpieces, in particular a method for materially fitting connection of so-called lightweight panels with a solid panel. Background technique [0002] In many fields of industry, for example in automobile construction, large-area sheet metals with a correspondingly high weight have to be used. Instead of panels made entirely of metal (also called "solid panels" or "plain panels"), so-called lightweight panels can be used. [0003] This lightweight panel consists of a layer structure of a first panel layer, a second panel layer and a core layer or intermediate layer arranged between the first and second panel layers. The intermediate layer has or consists of a plastic layer, wherein the plastic layer can be, for example, a PU layer (where PU stands for polyurethane). Such lightweight panels (also called sandwich panels) thus consist of two cover panels and a core layer arranged between the cove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/005B23K1/19B23K26/32
CPCB32B15/08B23K1/0056B23K1/19B23K26/0626B23K26/323B23K26/064B23K26/082B23K26/32B23K2101/006B23K2101/185B23K2101/34B23K2103/04B23K2103/16B23K2103/172B23K2103/18B23K2103/42
Inventor 阿维德·基里安瑟伦·席韦
Owner VOLKSWAGEN AG