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Method for welding a sintered shaped body

A sintered molding, form technology, used in welding media, welding equipment, welding equipment, etc.

Inactive Publication Date: 2007-06-27
MIBA SINTER AUSTRIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found that welds obtained by melting the sintered material with a laser beam have considerable porosity and thus cannot meet the higher requirements in terms of strength

Method used

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  • Method for welding a sintered shaped body
  • Method for welding a sintered shaped body

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Embodiment Construction

[0016] According to the described embodiment, the sintered molded body 1 is joined to the non-sintered component 2 by welding, so that the materials of the sintered molded body 1 and the non-sintered component 2 are preferably captured by the laser head 5 in the region of the subsequent weld seam 3 The defocused laser beam 4 melts, as shown in Figure 1. Since the atmospheric oxygen from the pores of the molded body 1 causes foaming of the melt during the melting of the sintered material of the molded body 1, a weld seam with pores is obtained, unless measures are taken against the foaming of the melt. special precautions have been taken. For this purpose, during the melting of the sintered material, a deoxidizer is used to react with the atmospheric oxygen from the pores of the molded body 1 and to form oxides which are bonded in a finely dispersed manner to the In the weld 3, without compromising the strength of the weld 3. By using the corresponding oxidizing agents, it is...

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Abstract

The invention relates to a method for welding a sintered shaped body (1), which has a residual porosity and which is melted in the area of a subsequent weld seam (3) by a laser beam (4). In order to obtain tight weld seams, the invention provides that, during the melting of the shaped body (1), the atmospheric oxygen from the pores of the shaped body (1) is at least largely bound in the weld seam area by means of a deoxidizing agent, and is embedded in the weld seam (3) in the form of finely dispersed oxides.

Description

technical field [0001] The invention relates to a method for welding sinter-moulded bodies which contain residual pores and which are subsequently melted by a laser beam in the region of the weld seam. Background technique [0002] In principle, molded bodies produced from sintered steel can be connected to other steel components by welding, which takes place independently of whether these components are produced by powder metallurgy. However, it has been found that the weld seam obtained by melting the sintered material by means of a laser beam has considerable porosity and thus does not meet the higher requirements in terms of strength. Contents of the invention [0003] It is therefore an object of the present invention to provide a method for welding sintered molded bodies with residual pores, said welding being carried out with the aid of a laser beam of the above-mentioned method, in the following manner Carrying out: Joining two weldable components, at least one of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/12B23K26/32B23K26/14B23K35/30
CPCB23K2203/02B22F2999/00B23K35/3053B23K26/3206B23K26/123B23K26/1411B23K26/32B23K26/144B23K2103/02B23K2103/50B22F7/062B22F2202/11
Inventor 彼得·奥思雷芒德·拉兹
Owner MIBA SINTER AUSTRIA
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