Method and apparatus for pre-compacting molding sand

Details Method and apparatus for pre-compacting molding sand Method and apparatus for pre-compacting molding sand

1998-03-23

1999-09-07

Ryan, Patrick

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164 37, 164172, 164169, B22D 4600, B22C 1502

Patent

active

059471859

ABSTRACT:
Molding sand filled in a space defined by a pattern plate and a flask is pre-compacted before the molding sand is completely pressed. A pre-compacting member is inserted into the molding sand toward the pattern plate, and then is stopped based on a predetermined depth of the pre-compacting member in the molding sand or a predetermined pressure caused by the pre-compacting member in the molding sand.

REFERENCES:
patent: 4262730 (1981-04-01), Powers
patent: 5332025 (1994-07-01), Larsen
patent: 5348070 (1994-09-01), Fischer et al.
patent: 5558148 (1996-09-01), Uzaki et al.
patent: 5660221 (1997-08-01), Oda et al.
patent: 5791398 (1998-08-01), Oda et al.

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