Vacuum impregnation of sintered materials with dry lubricant

Details Vacuum impregnation of sintered materials with dry lubricant Vacuum impregnation of sintered materials with dry lubricant

1985-11-22

1987-04-07

Lusignan, Michael R.

Bearings

Linear bearing

Lubricating

384279, 384909, 252 12, 252 122, 427294, 4273855, B05D 302, F16C 3302, F16C 3312

Patent

active

046556109

ABSTRACT:
A method for vacuum impregnation of sintered materials, preferably vacuum impregnation of sintered bearings parts, with dry lubricants is disclosed. The impregnation is performed in the following way. The cleaned parts to be impregnated are placed in a glass basin containing a mixture of, for example, molybdenum disulphide and graphite, a thermosetting resin, a solvent and a thermosetting resin extender. The glass basin is placed in a vacuum chamber and the vacuum chamber is then vacuum pumped for a sufficiently long time in order to evacuate the air from the pores of the sintered parts. After that air is again let in into the vacuum chamber until normal air pressure is reached. The sintered parts are taken out and are allowed to air dry. The coating is then cured.

REFERENCES:
patent: 4123122 (1978-10-01), Gabrielson
patent: 4473481 (1984-09-01), Fukutsuka et al.
patent: 4532054 (1985-07-01), Johnson
patent: 4582368 (1986-04-01), Fujita et al.

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