| 摘要 |
PURPOSE:To aim at improvements in the strength of a rotating sleeve, by making up the rotating sleeve being housed inside a housing with high Si-Al group alloy, while performing a technique of age hardening treatment and, after that, forming anodic oxidation film on at least the outer circumferential surface. 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 a high Si-Al group alloy of 12-25% Si content, then age hardening treatment takes place. Next, anodic oxidation treatment (alumite treatment) is performed on both inner and outer circumferential surfaces 6a and 6b of the rotating sleeve 6 whereby an anodic oxidation film 17 is formed on them, and a wearproof resin layer 18 is formed on the outer circumferential surface 6b at need. With this constitution, strength of the rotating sleeve 6 is heightened so that not only the promotion of its being thinned can be achieved but also abrasive resistance in each vane 1 can be much improved.
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