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我厂用18CrMnTi钢制造汽车后桥的螺旋伞齿轮、变速齿轮,目前采用二种渗碳方法:一、低氰盐浴渗碳;二、气体渗碳。本文着重叙述低氰盐浴渗碳汽车齿轮的金相检查。低氰盐浴的配方及渗碳工艺一、配方: 1.原始配方:BaCl_2 80%,NaCN 4～6%,NaCl14～16%; 2.控制使用配方:BaCl_2 68～74%,NaCN 0.9～1.1%,BaCO_3<10%。
I plant with 18CrMnTi steel manufacturing car rear axle spiral bevel gear, variable speed gear, currently using two carburizing methods: First, low cyanide bath carburizing; Second, gas carburizing. This article focuses on the metallographic examination of the gear in a low-cyanide carburizing car. Low cyanide salt bath formula and carburizing process First, the formula: 1. The original formula: BaCl_2 80%, NaCN 4 ~ 6%, NaCl14 ~ 16%; 2. Control the use of formula: BaCl_2 68 ~ 74%, NaCN 0.9 ~ 1.1 %, BaCO 3 <10%.