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.
Patent No.:
Date of Patent:
Sep. 15, 2009
Filed:
Apr. 29, 2005
Applicant:
David L. Milam, North Canton, OH (US);
Inventor:
David L. Milam, North Canton, OH (US);
Assignee:
The Timken Company, Canton, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D 5/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A weld joins a thin overlay of low carbon steel to a base that contains high carbon steel, at least at its surface along which the weld is formed. The weld may be effected by fusion (melting) or by solid-state diffusion. With either it creates a heat affected zone (HAZ) in the base around the weld. The HAZ contains enough austenite, and perhaps bainite as well, to render the HAZ relatively ductile and also crack resistant. Adjacent to the weld the HAZ has a hardness that does not exceed 58 HRC. The weld may be produced with a high energy beam or with resistance welding equipment.