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用滚压法强化内燃机车柴油机曲轴(用高强度铸铁制造)圆角,能使曲轴的安全系数提高60%。采用滚压圆角的方法强化2Д100和10Д100柴油机的曲轴后,其报废率减少了。11Д45柴油机曲轴是氮化强化的。氮化过程是在温度为560—580℃的气体介质中保温96个小时完成的。氮化层深度为0.7—0.9毫米,其中表面有一层α相的特硬层(0.02毫米)。氮化层基体的硬度为HRC46—48。氮化能使曲轴的疲劳强度提高25—30%。必须指出,由于氮化过程使曲轴产生了扭曲变形,因
Rolling method to strengthen the diesel engine crankshaft (made of high strength cast iron) fillet, can make the crankshaft safety factor increased by 60%. Rolling fillet method to strengthen the 2Д100 and 10Д100 diesel engine crankshaft, the scrap reduction rate. The 11Д45 diesel engine crankshaft is nitrided. The nitriding process is completed by holding in a gaseous medium at a temperature of 560-580 ° C for 96 hours. The nitrided layer has a depth of 0.7-0.9 mm with a hard layer of α phase (0.02 mm) on the surface. The hardness of the nitride layer matrix is HRC46-48. Nitriding can increase the fatigue strength of crankshafts by 25-30%. It must be pointed out that, due to the nitriding process of crankshaft distortion, due to