我厂生产的电火花切割机床，其中导轨要求局部渗碳淬火热处理。原来采用整体诊碳，然后将要求非硬化部分渗碳层切除掉这一传统的工艺。为了革除这种落后的加工方法，我们先后曾采用了多种防渗碳工艺进行试验，但效果均不理想，最后采用FC－108防渗碳涂料，经过多次反复试验及近 I plant the EDM cutting machine, which requires local carburizing guide rail quenching heat treatment. The original use of the overall diagnostic carbon, and then will require non-hardened part of the carburized layer removed from the traditional process. In order to get rid of this backward processing methods, we have used a variety of anti-carburizing process for the test, but the results are not satisfactory, the final use of FC-108 anti-carburizing coating, after repeated testing and near