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:
Jul. 05, 1988
Filed:
Jul. 16, 1986
Applicant:
Inventors:
Assignee:
Centro Sperimentale Metallurgico SpA, Rome, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148 / ; 148 / ; 148 / ; 148135 ; 148136 ;
Abstract
A process for heat treatment of austenitic and ferritic stainless steel wire rod, comprising rolling a stainless steel wire rod with a finishing-rolling temperature (FRT) between 850.degree. C. and 1050.degree. C. The rod is then held at a temperature between FRT -50.degree. C. and FRT +100.degree. C. for 15 to 30 minutes, and is then wire cooled. For the manufacture of austenitic stainless steel wires for the manufacture of springs, the finishing rolling temperature is 1000.degree.-1050.degree. C., followed immediately by water cooling.