The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 23, 2000

Filed:

Apr. 17, 1998
Applicant:
Inventors:

Hiroshi Mitsuyoshi, Kumamoto, JP;

Kaoru Kitamura, Kumamoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912164 ;
Abstract

The invention relates to a laser beam welding method for carbon steels applied to laser beam welding of carbon steels of different carbon content, and in order to improve uniformity of fused metal in the welded region, a laser beam is applied obliquely to the joint region between the carbon steels from the side of the carbon steel having the lower carbon content. When manufacturing a vehicle wheel 1 by this method, the laser beam is applied obliquely from the side of the hub 3 of rolled steel plate which contains about 0.1% of carbon to the joint region with the boss 2 of carbon steel for machine structural use which contains about 2% of carbon so as to fuse the end of the hub 3 and cause it to penetrate into the welded region.


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