| 摘要 |
PURPOSE:To eliminate the use of a melting furnace and simplify the process of the fabrication of a bearing which contains white metal or other alloys by coincidentally perform melting of ingots of the bearing alloy by means of a burner and centrifugal casting on the internal face of a cylindrical back metal. CONSTITUTION:Before manufacturing, a steel back metal 2 of a cylinder on the internal face of which Sn plating layers 3 are built up in advance is disposed on rollers 1 of a centrigual casting machine, for example and spherical ingots 4 are thrown into the back metal. Side plates 5 are attached thereto far preventing the back metal from falling during revolution and burner nozzles 8 are placed at the inside thereof. A burner nozzl 6 for preheating the back metal 2 and a water cooling nozzle 7 for cooling it by water after the completion of melting are additionally placed at the outside of the back metal 2. Under the conditions, the ingots 4 are heated to metal by the gas burner 8 and simultaneously the melted metal of the ingots is centrifugaly casted to the back metal 2 by revolving it. |
