南京轻工研究所用熔盐硼钒复合渗的方法(PHF法)处理不锈钢笔同拉伸芯模取得了显著效果。该方法是在熔融硼砂中漆加V_2O_5和铝粉,在950—980℃进行处理。复合渗之后再经淬火和低温回火。原来的模具用GCr15钢制造,采用常规热处理工艺,其寿命仅为1000～1500支笔套。改用45~#钢硼钒共渗,直接淬火 Nanjing Institute of Light Industry with molten salt boron vanadium composite infiltration method (PHF method) stainless steel pen with drawing core model achieved remarkable results. The method is to add V2O5 and aluminum powder in molten borax, and process at 950-980 deg.c. After the infiltration by the complex quenching and tempering. The original mold GCr15 steel manufacturing, the use of conventional heat treatment process, its life expectancy is only 1000 to 1,500 pen sets. Use 45 ~ # steel boron vanadium infiltration, direct quenching