Method of debinding for injection molded objects

Details Method of debinding for injection molded objects Method of debinding for injection molded objects

1991-09-16

1995-01-10

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264344, 419 36, 419 37, C04B 3564

Patent

active

053804767

ABSTRACT:
A debinding method for use in a process for producing a sintered object, by effecting a debinding pre-treatment by heating the injection-molded object in an atmosphere of reduced pressure at a temperature at which the vapor pressure of the component of the organic binder having the highest vapor pressure does not exceed the pressure of the atmosphere, thereby removing the organic binder in the amount of at least about 18 wt %; and effecting a further debinding heat treatment in which the injection-molded object is heated to and maintained at a temperature higher than the temperature in the debinding pre-treatment.

REFERENCES:
patent: 2939199 (1960-06-01), Strivens
patent: 3346680 (1967-10-01), Bush
patent: 3711279 (1973-01-01), Hivert
patent: 4374457 (1983-02-01), Wiech
patent: 4404166 (1983-09-01), Wiech
patent: 5122326 (1992-06-01), Jackson
Gorham Advanced Materials Institute "MIM Part Debinding And Sintering in Injectavac.TM. Furnaces" Mar. 19-21, 1989-Sheldwon W. Kennedy.

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