Process for cleaning porous parts

Details Process for cleaning porous parts Process for cleaning porous parts

1989-06-05

1990-06-05

Pal, Asok

Cleaning and liquid contact with solids

Processes

Oils, grease, tar, or wax removal, by dissolving

134 21, 134 2218, C23G 5024, B08B 704

Patent

active

049311042

ABSTRACT:
A cleaning process is provided that is particularly advantageous for removing oil or oil-like material from porous parts such as porous internal combustion engine components such as valves.
The process utilizes oil solubilizing solvents as well as alkaline soap and water solutions and mixtures of water soluble amines and water or deionized water in conjunction with alternate pressure and vacuum cycling to effect the cleaning.

REFERENCES:
patent: 2032174 (1936-02-01), Johnson
patent: 2748084 (1956-05-01), DeLew
patent: 3375133 (1968-03-01), Scott
patent: 3560352 (1971-02-01), Garderen
patent: 4097306 (1978-06-01), Carman
patent: 4590100 (1986-05-01), Hearst
patent: 4602963 (1986-07-01), Piatkowski
patent: 4687523 (1987-08-01), Hall
patent: 4710232 (1987-12-01), Tahbaz
patent: 4752411 (1980-06-01), Melin

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