Method of preparing an air-permeable molded body

Details Method of preparing an air-permeable molded body Method of preparing an air-permeable molded body

1994-04-19

1995-07-25

Walsh, Donald P.

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Powder pretreatment

419 66, B22F 100

Patent

active

054359678

ABSTRACT:
The present invention provides a method of preparing a molded body good in processing properties, having fine contiguous pores throughout it. The surface texture of the body is fine. The body is excellent in thermal conductivity and heat-resistance properties, can be readily prepared, and is usable as a transferring mold.
The method comprises compounding and mixing 5-20 parts by weight of a binder consisting of a modified amine and a modified M. D. I. that are both liquid with 100 parts by weight of an aggregate consisting of aluminum powders or aluminum-based alloy powders, filling the mixture in a molding flask, and compressing it under a pressure per unit area of 20-80 kg/cm.sup.2, and maintaining it under the same pressure until the binder is hardened.

REFERENCES:
patent: 5261478 (1993-11-01), Sun
patent: 5270364 (1993-12-01), Schwartz et al.

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