Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1976-02-19
1976-12-28
Shore, Ronald J.
Metal founding
Process
Shaping liquid metal against a forming surface
164113, 164305, 164318, B22D 2720, B22D 1704
Patent
active
039995933
ABSTRACT:
In a hot chamber method of pore-free die casting, a gas which reacts with the cast material flushes air from a passage in a nozzle, sprue bushing, and at least a portion of a gooseneck through which the material fills the die cavity, as well as from the die cavity. The reactive gas replaces the air in the passage so that air is not forced into the die cavity by the material when it fills the die cavity. Air in the die cavity would form pores in the cast material. Hot chamber apparatus for practicing the method has a bore communicating with the passage for flushing the passage with the gas. A valve closes the bore when the material fills the die cavity so that the material only enters the die cavity. A heating element heats the valve to prevent the material from solidifying about the valve and thereby interfering with its operation.
REFERENCES:
patent: 1332940 (1920-03-01), Wiedhofft
patent: 2001251 (1935-05-01), Irving
patent: 2042541 (1936-06-01), Marinsky
patent: 2652223 (1953-09-01), Peters
patent: 3382910 (1968-05-01), Radtke
patent: 3537682 (1970-11-01), Priese
patent: 3724491 (1973-04-01), Knudsen et al.
patent: 3779304 (1973-12-01), Miki
International Lead Zinc Research Organization, Inc.
Shore Ronald J.
LandOfFree
Method and apparatus for pore-free die casting does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for pore-free die casting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for pore-free die casting will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-143772