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. 09, 2001
Filed:
Jul. 01, 1999
Mazda Motor Corporation, Hiroshima, JP;
Abstract
In a semi-molten metal injection molding method of producing a thick molded article by injecting a semi-molten melt M of a magnesium alloy, in a semi-melting state, into a cavity,of a mold,through a product gate,, characterized in that it is made possible to obtain a high-quality thick molded article free from internal defects. A solid fraction of the semi-molten melt M is set to not less than 10%, and more preferably within a range of 40 to 80%. A sectional area Sg of a product gate portion of the thick molded article corresponding to the product gate,is set to not less than 0.1 times a sectional area Sp in the vicinity of the product gate,in the product portion corresponding to the cavity,. Furthermore, a product gate velocity Vg mm/s of the semi-molten melt M, a sectional area Sg mm,of the product gate portion of the thick molded article and a volume Vp mm,of the product portion are set so as to satisfy the following relationships: Vg≦8.0×10,; and, Vg×Sg/Vp≧10.