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:
Nov. 15, 1994
Filed:
Apr. 23, 1993
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A method of discriminating the quality of die-cast articles when casting an article by pressurizing and filling a molten metal into a die through an injecting sleeve using an injecting plunger. The method has the steps of measuring at least one of the operational parameters of a die temperature, a gas pressure in a die cavity, a molten metal pressure in a die cavity, an injecting sleeve temperature, an injecting plunger travel speed, and an injection plunger displacement; and discriminating the quality of a die-cast article by comparing the measured parameter value with a reference value determined on the basis of a predetermined interrelationship between the operational parameter and an allowance limit of the amount of a casting defect.