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:
Aug. 23, 2022
Filed:
Dec. 27, 2019
Applicant:
Tata Steel Limited, Jharkhand, IN;
Inventors:
Suman Guha, Jamshedpur, IN;
Rudra Bubai Sarkar, Jamshedpur, IN;
Rahul Kumar Verma, Jamshedpur, IN;
Gujre Vinay Sanjay, Jamshedpur, IN;
Shaik Shamshoddin, Jamshedpur, IN;
Assignee:
TATA STEEL LIMITED, Jamshedpur, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 22/02 (2006.01); B44B 5/00 (2006.01); B44B 5/02 (2006.01); C21D 9/00 (2006.01); C21D 9/46 (2006.01); B23P 9/00 (2006.01); C21D 7/04 (2006.01);
U.S. Cl.
CPC ...
B21D 22/02 (2013.01); B44B 5/0019 (2013.01); B44B 5/0052 (2013.01); B44B 5/026 (2013.01);
Abstract
The present disclosure discloses a method for improving fatigue strength of a workpiece (). The method comprises positioning the workpiece () in a punch and die assembly (). Operating the punch and die assembly () one or more times to imprint surface features () on a portion of a surface of the workpiece (), wherein the surface features () induces compressive residual stresses at a sub-surface level of the workpiece (), and improves the fatigue strength of the workpiece ().