Method of discriminating quality of die-cast article and die-cas

Details Method of discriminating quality of die-cast article and die-cas Method of discriminating quality of die-cast article and die-cas

1993-04-23

1994-11-15

Bradley, P. Austin

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164457, 164113, B22D 1732

Patent

active

053638999

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.

REFERENCES:
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patent: 4469164 (1984-09-01), Ishikawa et al.
patent: 4497359 (1985-02-01), Suzuki et al.
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patent: 4844146 (1989-07-01), Kikuchi
patent: 4874032 (1989-10-01), Hatamura
patent: 4932458 (1990-06-01), Iwamoto et al.
Patent Abtracts of Japan, vol. 12, No. 294, Aug. 1988, 61-216824 published Apr. 1988 (English Abstract).
JP A-59-13942, Jan. 1984 English Abstract.
Metal Handbook, 9th ed, vol. 15, pp. 294-295.

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