| 摘要 |
PURPOSE:To reduce the degree of sliding resistance, by making up a rotating sleeve to be housed inside a housing with an Al-Si group alloy, and forming an anodic oxidation film on both inner and outer circumferential surfaces of the sleeve, while embedding a solid lubricant in a concave part installed in part of this film. CONSTITUTION:A rotary compressor houses a rotating sleeve 6 rotatably inside a cylindrical housing 2 and eccentrically sets up a rotor 8 in which plural vanes 12 are slidably set up in a radial direction inside the said sleeve 6. In this case, the rotating sleeve 6 is formed with an Al-Si group alloy and processed with anodic oxidation treatment whereby an anodic oxidation film (alumite) 17 is formed on both inner and outer circumferential surfaces 6a and 6b of the rotating sleeve. And, with polishing machining after alumite treatment like this, Si particles are exposed out of the surface, and a solid lubricant 18 is embedded in each of concave parts 20 being secured upon removal of Si particles 19 through desilicon treatment, thus the sliding circumferential surface required is securable. |
