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为了进一步提高柴油机曲轴的使用寿命,我们在厂党委的正确领导下,在上海机械制造工艺研究所的大力支持和配合下,坚持三结合,进行尿素软氮化的试验研究工作,取得了一定的成果,并已投入批量生产。尿素软氮化原理国外气体软氮化是采用50%氨气和50%吸热型气体的混合气体,在露点为-1℃,温度为570℃的条件下处理的。这种方法虽较成熟,但吸热式气体的发生设备较复杂。因此我们选
In order to further improve the service life of diesel engine crankshaft, under the correct leadership of the factory party committee, with the strong support and cooperation of Shanghai Mechanical Manufacturing Technology Institute, we adhere to the triple combination to carry out experimental research on urea nitrocarburization and achieved certain Results, and has been put into mass production. The principle of urea soft nitriding Foreign gas nitrocarburizing is the use of a mixture of 50% ammonia and 50% endothermic gas, the dew point is -1 ℃, the temperature is 570 ℃ conditions. Although this method is more mature, but the endothermic gas generation equipment is more complicated. So we choose