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:
Apr. 01, 2003
Filed:
Dec. 05, 2001
Applicant:
Inventor:
John Michael Beswick, Montfoort, NL;
Assignee:
SKF Engineering & Research Centre B.V., Nieuwegin, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 3/822 ; C21D 9/36 ;
U.S. Cl.
CPC ...
C22C 3/822 ; C21D 9/36 ;
Abstract
Rolling structure steel, comprising: 0.90-100% by wt. C; 0.95-1.05% by wt Si; 0.25-0.45% by wt Mn; 0.015% by wt. S max.; 0.025% by wt. P max.; 1.30-1.50% by wt. Cr, and 0.17-0.20% by wt. Mo. Preferably this steel is produced by austenising at 860+20° C., quenched in oil and tempered at 240+20° C. In this way steel is obtained having a high rolling contact fatigue strength and dimensional stability at elevated temperature operating conditions.