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利用离子渗氮炉内各部位温度有所差异的特性及升温速度对炉温不均匀性的影响规律,成功地解决了大型滑板在深层离子渗氮过程中畸变大的问题,并且校正了原来的加工畸变。采用先通氢气升温,活化滑板表面,抑制ε相生成的方法提高了氮的渗入速度,有效地缩短了深层离子渗氮所需要的时间;用压痕法和维氏硬度计对渗层的脆性和硬度进行了检测,表明渗层性能良好。
Taking advantage of the difference of temperature in each part of the ion nitriding furnace and the influence law of the heating rate on the inhomogeneity of the furnace temperature, the problem of large distortion of the large skateboard in the process of deep ion nitriding was successfully solved, and the original Processing distortion. The method of first heating hydrogen, activating the surface of skateboard and inhibiting the formation of epsilon phase increased the infiltration rate of nitrogen and effectively shortened the time required for deep ion nitriding. The brittleness of the infiltrated layer by indentation method and Vickers hardness tester And hardness were tested, indicating good performance of the layer.