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:
May. 31, 1977
Filed:
Nov. 20, 1974
Applicant:
Inventors:
Ray J Van Thyne, Oak Lawn, IL (US);
John J Rausch, Antioch, IL (US);
Assignee:
Surface Technology Corporation, Oak Lawn, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148 315 ; 7513 / ; 7513 / ; 7513 / ; 75174 ; 148 32 ;
Abstract
Nitrided cutting tool materials having excellent wear and abrasion resistance. Such materials consist essentially of an alloy base of (a) one or more metals of the group columbium and vanadium and sometimes tantalum; (b) hafnium; (c) one or more metals of the group molybdenum, tungsten, rhenium and chromium; and (d) optionally titanium and/or zirconium, all in amounts by weight as are set out in this specification. These alloys are formable to shape and are then nitrided to produce a nitrided gradient in a high hardness surface zone.