Method for welding a sintered molded body

Details Method for welding a sintered molded body Method for welding a sintered molded body

B - Operations, Transporting

23

K

B23K 26/12 (2006.01) B23K 26/32 (2006.01)

Patent

CA 2573298

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.

L'invention concerne un procédé permettant de souder un corps moulé (1) fritté à porosité résiduelle, qui est fondu par faisceau laser (4), dans la zone où le prochain cordon de soudure (3) doit être effectué. Afin d'obtenir des cordons de soudure solides, il est prévu d'incorporer sous forme d'oxydes finement dispersés, dans le cordon de soudure (3), pendant la fusion du corps moulé (1), l'oxygène atmosphérique qui sort des pores du corps moulé (1) et est lié, au moins dans une large mesure, dans la zone du cordon de soudure, par un agent de désoxydation.

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