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.

Date of Patent:
May. 28, 1985

Filed:

Dec. 29, 1983
Applicant:
Inventors:

Yasuo Nakanishi, Iruma, JP;

Kazunori Sakamoto, Kawagoe, JP;

Giichi Ando, Kawagoe, JP;

Teruoki Watanabe, Kawagoe, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
148127 ; 148 14 ; 148 18 ; 228200 ;
Abstract

A process and apparatus for heat treatment of a steel article made of soft steel or the like comprising heating the steel article to a brazing temperature of 1100.degree.-1200.degree. C., then cooling the steel article in a furnace to a temperature of about 570.degree.-720.degree. C., and thereafter rapidly cooling the article. The article is heated to brazing temperature in an oxidation-free atmosphere and is also cooled in an oxidation-free atmosphere. The article can be rapidly cooled by contact with a surface pretreatment solution.


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