Mold for use in dental precision casting

Details Mold for use in dental precision casting Mold for use in dental precision casting

1983-12-06

1987-07-28

Batten, Jr., J. Reed

Metal founding

Means to shape metallic material

United particle type shaping surface

164361, 164376, 249 54, 249 62, B22C 904, B22C 908

Patent

active

046826440

ABSTRACT:
In casting metals for dental prosthetic use, superior dental castings free from shrinkage cavities can be obtained by delaying the cooling and solidification of molten metal in mold members such as a sprue, runner and gate and, if necessary, a molten metal reservoir into which the molten metal is poured. Such delay in cooling and solidification can be achieved either by forming the sprue and the like from a heat resisting ceramic tubular body or by further forming a heat insulating layer on the outer periphery of the tubular body.

REFERENCES:
patent: 2569899 (1951-10-01), Miner
patent: 3480070 (1969-11-01), Beetle et al.
patent: 3815665 (1974-06-01), Baur

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