Method for removing binder from green body

Details Method for removing binder from green body Method for removing binder from green body

1990-02-14

1990-12-18

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder pretreatment

264 63, 419 36, B22F 700

Patent

active

049784986

ABSTRACT:
A method of removing a binder from a green body capable of accomplishing the binder removal at a substantially reduced temperature and in a significantly reduced period of time. The binder mainly consists of a polymer material of ultraviolet degradation properties such as, for example, a polymer material having a main chain containing a tertiary carbon atom. The green body is irradiated with ultraviolet rays at a temperature within the range of 150.degree. C. to 300.degree. C. under an atmospheric pressure to rapidly carry out the photo degradation of the polymer material by ultraviolet rays, so that the binder may be readily removed from the green body.

REFERENCES:
patent: 4305756 (1981-12-01), Wiech, Jr.
patent: 4582677 (1986-04-01), Sugino et al.
patent: 4772437 (1988-09-01), Reavely et al.
patent: 4855102 (1989-08-01), Okada et al.
Japanese Patent Publication No. 48563/1986.
Japanese Patent Publication No. 33282/1987.

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