Method and apparatus for manufacturing moulds or mould parts by

Details Method and apparatus for manufacturing moulds or mould parts by Method and apparatus for manufacturing moulds or mould parts by

1994-06-28

1996-08-20

Batten, Jr., J. Reed

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164 20, 164 38, 1641553, 164195, 164200, B22C 1110, B22C 1524, B22C 1528

Patent

active

055470157

ABSTRACT:
The blowing-in of the sand into the mould is continued while the pressure in the mould chamber increases through a maximum mould pressure and the blowing-in is terminated at a predetermined time period subsequent to reaching maximum pressure. This method ensures that the mould chamber will be completely filled independently of its size or shape without having to keep the blowing-in mould sand active for a longer time than absolutely necessary.

REFERENCES:
patent: 2779074 (1957-01-01), Herbruggen
patent: 2798266 (1957-07-01), Herbruggen
patent: 3008199 (1961-11-01), Jeppesen
patent: 4791974 (1988-12-01), Larsen
patent: 5332025 (1994-07-01), Larsen

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