| 摘要 |
PURPOSE: To prevent seizure without increasing weight and cost by forming a vane of a vane type compressor to rotate while rubbing an inner peripheral wall of a cam ring out of an aluminium type base material and an iron type covering part to cover a surface of its base material. CONSTITUTION: A vane 14 of a vane type compressor which is slidably inserted into a vane groove of a rotor in a cam ring and whose tip rotates while rubbing an inner peripheral wall of the cam ring by jumping out of the vane groove when the rotor rotates, is formed of an aluminium type base material 14a and an iron type covering part 14b to cover its surface. When the vane 14 is manufactured by a drawing construction method, a bar-shaped aluminium type base material 34a is inserted into an iron pipe 34b being the covering part 14b, and only the iron pipe 34b is heated to 200 to 300 deg.C or more by a heater 20, and is thermally expanded. Next, the iron pipe 34b and the base material 34a are inserted into a hole 21a of a die 21, and the iron pipe 34b is drawn out while blowing a cold blast against it. |
