SCROLL TYPE FLUID MACHINE AND METHOD FOR FORMING SCROLL MEMBER OF SCROLL TYPE FLUID MACHINE

摘要

PURPOSE:To make it possible to form hard coat without regard to the material of aluminum on the surface of a scroll member so as to improve wear resistance by forming the scroll member made of aluminum alloy and applying electroness Ni-P plating to at least one of the surface thereof. CONSTITUTION:A title compressor is constructed in a way that a compressor part 2 is arranged at the upper portion in a closed vessel 1, an electric motor 3 is arranged at the bottom part therein and the scroll rap 5a of a fixed scroll 5 and the scroll lap 5a of a revolving scroll 6 are engaged each other Oldahm's mechanism for preventing the rotation of revolving scroll 6 is provided between the revolving scroll 6 and a frame 7 and the revolving scroll 6 is revolved by the electric motor 3 via a crankshaft 9. In this case, at least the revolving scroll 6 is made of aluminum, electroless Ni-P plating is applied to the sliding surface thereof and heat treatment is applied to form hard coat.