Vacuum impregnation of sintered materials with dry lubricant.

摘要

@ A method for vacuum impregnation of sintered bearings parts with dry lubricants. The impregnation is performed in the following way. The cleaned parts (1) to be impregnated are placed in a glass basin (2) containing a mixture of, for example, molybdenum disulphide and graphite, a termosetting resin, a solvent and a termosetting resin extender. The glass basin is placed in a vaccum chamber (3) 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.