模具钢H13熔盐Cr－RE共渗的组织结构与耐磨性能研究

The Surface Microstructures and Wear Resistance of Re-chromiging H13 Die Steel in Molten Salt Bath

研究模具钢Ｈ１３熔盐Ｃｒ—ＲＥ共渗对表面显微组织特征及其性能的影响，渗剂中加入适量稀土可使渗速提高２０％～５０％，Ｃｒ－ＲＥ共渗优于单一渗Ｃｒ，可明显提高模具表面硬度、抗氧化能力和耐磨性能。

The effects of Re-chromizing process in molten salt bath on the surface microstructures and properties of H13 die steel are studied. The results show that the Re chromizing process rate, compared with conventional chromizing process,has increased 20～50 percent by adding proper rare earth to the molten salt and the properties such as hardness, oxidetion resistance and wear resistance are improved obviously.