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:
May. 08, 1979
Filed:
Apr. 28, 1977
Applicant:
Inventors:
Horst Beyer, Burscheid, DE;
Hans J Neuhauser, Berg.-Gladbach, Paffrath, DE;
Hans-Jurgen Veutgen, Burscheid, DE;
Assignee:
Goetzewerke Friedrich Goetze AG, Burscheid, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C22C / ;
U.S. Cl.
CPC ...
148-1 ; 148-3 ; 148-4 ; 148 35 ; 148 39 ; 148138 ; 148139 ; 164127 ; 277 / ; 277236 ; 418178 ; 418179 ;
Abstract
A friction stressed machine part of cast iron with a ledeburitic-containing bearing surface contains 0.1 to 10 area percent of predominantly nodular-shaped graphite in the ledeburitic-containing bearing surface. A number of methods for producing such a machine part are provided, including, casting the machine part against a quenching plate so that it hardens in a mottled manner in the region of the bearing surface.