拖拉机、汽车以及各种机床的齿轮箱壳体,经使用中多次拆装,常发现轴承与轴承座孔配合松动,或是销子与销孔配合松动,失去装配要求。这种情况在拖拉机汽车的变速箱、差速器壳体上尤为常见。对于这种损坏一般是采用轴承外圈镀铬来恢复其配合尺寸,这种修复方法的缺点是下次更换轴承时又要进行电镀。为了克服这一缺点,我们采用将齿轮箱整体入榴,局部镀铜的简便方法解决了这一问题。这种方法所前设备工艺简单,生产率高,成本低。去年底,我们在修理一台旧式刚外耕耘机时,发现变速箱壳体上 Tractors, automobiles and gearbox casing of various machine tools, often disassembled through the use of bearings, bearings and bearing holes are often found with loose, or pin and pin hole with loose, loss of assembly requirements. This situation is particularly common on tractor-car transmissions and differential cases. For this damage is generally used to restore the bearing outer ring chrome plating with its size, the drawback of this repair method is the next time you replace the bearing plating. In order to overcome this shortcoming, we solved the problem by a simple method of integrating the gear box into the whole machine and partially plating the copper. This method before the equipment process is simple, high productivity, low cost. At the end of last year, we found a gearbox case when repairing an old-fashioned cultivator