Plastic and nonmetallic article shaping or treating: processes – Disparate treatment of article subsequent to working,... – Washing of article
Patent
1986-06-10
1990-07-24
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Disparate treatment of article subsequent to working,...
Washing of article
264 63, 264344, 419 36, B22F 100, B28B 1122
Patent
active
049434039
ABSTRACT:
There is disclosed a method for eliminating an organic dispersion medium from a molded product obtained by plasticizing-molding or casting-molding of metallic and/or ceramic powders wherein the elimination is by extraction by liquid carbon dioxide at a temperature not lower than -30.degree. C. and not higher than -31.1.degree. C. The method prevents nonuniform volumetric decrease of the molded product to be otherwise caused by the extraction of the organic dispersion medium, while also making it possible to completely eliminate the organic dispersion medium without causing residual strain or deformation in the molded product.
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Miyashita Tsuneo
Nishio Hiroaki
Sato Michitaka
Derrington James
Nippon Kokan Kabushiki Kaisha
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