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通过正交试验优选出对球铁曲轴具有较好氮化效果的ＣＣｌ_４加入量和其他工艺参数。结果表明：加入１％的ＣＣｌ_４不仅有利于优化渗层性能，减少曲轴弯曲变形，而且可缩短工艺时间，提高经济效益。
Through orthogonal test, the optimal addition amount of CCl 4 and other process parameters to the crankshaft of the ductile iron with better nitriding effect were obtained. The results show that adding 1% CCl_4 not only helps to optimize the performance of the layer, but also reduces the bending deformation of the crankshaft, shortens the processing time and increases the economic benefit.