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. 30, 2001
Filed:
Feb. 10, 2000
Applicant:
Inventor:
Hans Thurner, Baldham, DE;
Assignee:
Alusuisse Technology & Management Ltd., Neuhausen am Rheinfall, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D 2/715 ; B22D 1/700 ;
U.S. Cl.
CPC ...
B22D 2/715 ; B22D 1/700 ;
Abstract
A process for die-casting aluminum and aluminum alloys is such that the molten metal is introduced into a filling chamber and injected from the filling chamber into a mold cavity by a piston. The mold cavity is evacuated in advance, after which it is flooded with oxygen. After flooding with oxygen and before injecting the molten metal into it, the mold cavity is again evacuated. Finally, the molten metal is injected into the hollow mold cavity. The process enables die-cast parts to be produced with low tendency to forming pores and blisters.