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:
Feb. 06, 1979
Filed:
Feb. 28, 1977
Shinichi Murakami, Osaka, JP;
Katsutaro Akamatsu, Hirakata, JP;
Arata Yoshimitsu, Katano, JP;
Sueyoshi Noji, Hirakata, JP;
Kubota, Ltd., Osaka, JP;
Abstract
A method of producing stainless steel products superior in intergranular corrosion resistance and applicable to ultrasonic flaw detection, in which austenite group stainless cast steel containing 5 to 40% of ferrite phase is employed as base material, part or all of which base material is subjected to plastic deformation or plastic processing such as pulling, pressing, bending, tension processing and the like, with subsequent recrystallizing heat treatment for the improvement of intergranular corrosion resistance by making its cast structure fine and reducing surface roughening developed due to deformation during the plastic processing, and for making it possible to successfully apply ultrasonic flaw detection to such cast steel products.