Perfected sintering machine and method of operation

Details Perfected sintering machine and method of operation Perfected sintering machine and method of operation

1988-08-19

1991-01-29

Smith, Jerry

Boots, shoes, and leggings

219149, 419 48, 419 52, 419 54, G06F 1546, B21J 106, B22F 3302

Patent

active

049891537

ABSTRACT:
A sintering machine for applying heat and pressure to a die retained between two plate sets, includes a temperature sensor, a position sensor and a pressure sensor which are all connected to a computer for sensing the temperature of and pressure applied to the die, as well as the position of a movable one of the plate sets. This information is used to control a power supply unit which supplies current through the die to heat the die, and a hydraulic press for moving the movable one of the plate sets. Pressure and temperature are controlled in a discontinuous fashion during discrete intervals until a selected final temperature and pressure are reached. This more closely controls the sintering process over earlier systems which applied continously increasing temperature and pressure to the die.

REFERENCES:
patent: 3241956 (1966-03-01), Inoue
patent: 3331686 (1967-07-01), Bonis et al.
patent: 3508029 (1970-04-01), Inouse
patent: 3567903 (1971-03-01), Parker
patent: 3670137 (1972-06-01), Inouse
patent: 3873805 (1975-03-01), Inouse
patent: 4414028 (1983-11-01), Inoue
patent: 4456578 (1989-06-01), Ward
patent: 4720256 (1988-01-01), Asari et al.

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