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:
Dec. 14, 1982
Filed:
Apr. 08, 1981
Applicant:
Inventor:
Bela V Kovacs, Bloomfield Hill, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
7513 / ; 75 53 ; 75 58 ; 7513 / ;
Abstract
A method is disclosed of making as-cast ductile iron wherein an iron melt having a chemistry capable of forming gray iron having flake graphite is treated with a nodularizing agent and solidified to provide a microstructure consisting substantially of a pearlite matrix containing uniformly distributed graphite nodules surrounded by ferrite. The iron melt is alloyed with: (a) at least one of 0.02-0.06% Sb and 0.02-0.08% Sn, (b) 0.001-0.0015% each of Ce and La, and (c) 0.5-1.0% Mn.