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用硬质粉末合金焊补已磨损另件,在修理行业,得到了越来越广泛的应用。然而,用这种方法修复的另件,机械加工困难。特别是磨削熔剂层下堆焊的汽车发动机曲轴轴颈,就更困难。这些轴颈,由於硬度高并且没经淬火处理,因此,在修理生产中,砂轮磨耗量大,磨削的生产率低。最近苏联试验一种新的电化学磨削方法,它是提高硬质合金生产效率的有效方法之一。
With hard powder alloy welding repair has worn pieces, in the repair industry, has been more and more widely used. However, the other parts repaired in this way are difficult to machine. In particular, it is even more difficult to grind a crankshaft journal of a car engine under flux layer. These journals, due to the high hardness and no quenching, so in the repair production, grinding wheel wear, grinding low productivity. Recently, a new electrochemical grinding method was tested in the Soviet Union, which is one of the effective methods to improve the production efficiency of cemented carbide.