Back to 1998's patent survey.
| United States Patent | 5,828,032 |
| Krzys, et. al. | Oct. 27, 1998 |
Process for butt welding two metal blanks and a motor vehicle part obtained by said process
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 deg. 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.
| Inventors: | Krzys; Jean-Marc
(Dunkerque, FR);
Oberle ; Hugues
(Dunkerque, FR);
Peru; Gilles
(Dunkerque, FR);
Verrier; Pascal
(Lumbres, FR).
|
| Assignee: | Sollac
(Puteaux, FR).
|
| Appl. No.: | 627,013 |
| Filed: | Apr. 3, 1996 |
Foreign Application Priority Data
| Apr. 4, 1995 [FR] | 95 03972 |
| Intl. Cl. : | B23K 26/00 |
| Current U.S. Cl.: | 219/121.64; 428/594 |
| Field of Search: | 219/121.13, 121.14, 121.63, 121.64, 118; 428/594, 653; 296/188 |
References Cited | [Referenced By]
U.S. Patent Documents
| 4,281,235 | Jul., 1981 | Peloquin | 219/121.64 |
| 4,628,178 | Dec., 1986 | Miyake et al. | 219/121.64 |
| 4,644,126 | Feb., 1987 | Schumacher | 219/121.64 |
| 5,343,014 | Aug., 1994 | Ogino et al. | 219/121.64 |
| 5,399,834 | Mar., 1995 | Guth | 219/121.64 |
Foreign Patent Documents
| 0 023 174 A1 | Jan., 1981 | EP | |
| 3117527 A1 | Nov., 1982 | DE | |
| 58-070985 | Apr., 1983 | JP | |
| 59-030489 | Feb., 1984 | JP | |
| 5-131283 | May, 1993 | JP | 219/121.64 |
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Other References
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French Search Report Dated Nov. 29, 1995.
Primary Examiner: Evans; Geoffrey S.
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
21 Claims, 2 Drawing Figures
[USPTO]