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:
Oct. 14, 1986
Filed:
Mar. 13, 1984
Applicant:
Inventors:
Klaus Hornung, Stein a. Rhein, CH;
Anton Alt, Schaffhausen, CH;
Gunter Schulte, Velbert, DE;
Fritz Mahnig, Schaffhausen, CH;
Assignee:
Georg Fischer Aktiengesellschaft, Schaffhausen, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148138 ; 148321 ;
Abstract
A method is disclosed for improving the immunity to temperature changes of cast iron containing lamellar graphite. The structure of the cast iron melt is suitably adjusted by means of carbide forming agents, to wit chromium and/or molybdenum and an annealing treatment in such a manner that the gray cast iron withstands increased thermal shock and dynamic stresses.