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:
Dec. 18, 2012
Filed:
May. 16, 2008
Jerry Mccracken, Calmar, CA;
Dale M. Homeniuk, Spruce Grove, CA;
Jerry McCracken, Calmar, CA;
Dale M. Homeniuk, Spruce Grove, CA;
McCoy Corporation, Edmonton, Alberta, CA;
Abstract
A method of hard facing a metal substrate with a two-layer abrasion and impact resistant coating by fusing a softer inner first coat of a matrix alloy of nickel-, cobalt- or iron-base alloy with carbide particles onto the substrate and fusing a harder second outer coat of a matrix alloy of nickel-, cobalt- or iron-base alloy with angular carbide particles onto the softer inner first coat. The softer inner first coat preferably has a hardness of about 30-40 Rc and the harder outer second coat preferably has a hardness of about 50-60 Rc. The carbide particles preferably are tungsten carbide particles in the size range of about 60 to 250μ and comprise about 55 to 65 wt % of each of the inner and outer coats.