Plastic and nonmetallic article shaping or treating: processes – Treating shaped or solid article – To remove entrained material from article
Patent
1990-08-08
1993-02-23
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Treating shaped or solid article
To remove entrained material from article
264 63, 419 36, 419 37, 419 65, C04B 4153
Patent
active
051887932
ABSTRACT:
A dewaxing method of a metal and/or ceramic molded body which comprises immersing the metal and/or ceramic molded body formed through a plastic molding in a boiling solvent to extract the dispersion medium contained in the molded body with said solvent. According to the method of the invention, the dewaxing time can be shortened from about 150 hours to the sum of about 54 hours for the solvent extraction and about 11 hous for dewaxing under heating. The dewaxed molded body is a sound body containing no crack nor expansion.
REFERENCES:
patent: 2939199 (1960-06-01), Strivens
patent: 3953562 (1976-04-01), Hait et al.
patent: 4197118 (1980-04-01), Wiech
patent: 4731208 (1988-03-01), Nakajima et al.
patent: 4820462 (1989-04-01), Nakajima et al.
Derrington James
NKK Corporation
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