C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/28, 148/36,
C21D 1/09 (2006.01)
Patent
CA 1151058
ABSTRACT OF THE DISCLOSURE A method of hardening the surface of steel work pieces is disclosed wherein the work piece is first treated with a solution to cause the blackening thereof and subsequently subjected to a laser beam for a time sufficient to raise the surface temperature thereof into the austenitic phase.
370068
Lorenzo Roberto
Wolf Frank J.
Sim & Mcburney
Xerox Corporation
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