Process for butt welding two metal blanks and a motor vehicle pa

Details Process for butt welding two metal blanks and a motor vehicle pa Process for butt welding two metal blanks and a motor vehicle pa

1996-04-03

1998-10-27

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

428594, B23K 2600

Patent

active

058280324

ABSTRACT:
Process for butt welding two metal blanks(1,2) of which the first blank is of steel and the second blank is of a metal having a melting temperature lower by more than 400.degree. C. than the melting temperature of the steel. The process includes positioning the two metal blanks (1,2) so that they contact each other in the region of their lateral faces to be butted together, maintaining the two metal blanks in contact, directing onto one of the principal faces of the metal blank (1) a high energy density bean (5) which passes through the first metal blank (1) and of which the focusing point is situated at a given distance from the joint plane (3) so as to generate in the region of the joint plane (3) a temperature equal to the melting temperature of the second metal blank (2) to within 10%, and displacing the high energy density beam (5). This process is applicable to the welding of two metal blanks of which one is of steel and the other is of aluminium or aluminium alloy for producing a motor vehicle part, in particular a body and structural part.

REFERENCES:
patent: 4281235 (1981-07-01), Peloquin
patent: 4628178 (1986-12-01), Miyake et al.
patent: 4644126 (1987-02-01), Schumacher
patent: 5343014 (1994-08-01), Ogino et al.
patent: 5399834 (1995-03-01), Guth
French Search Report Dated Nov. 29, 1995.

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