目前,在航空工业中广泛使用的铁基和镍基高温合金,虽具有优良的使用性能,但加工困难。用高速钢刀具加工这些材料,普遍存在着崩刃、折断、使用寿命低的问题。为了提高切削难加工材料用的高速钢刀具的使用寿命,我们进行了高速钢刀具的钼硫共渗试验。 1.工艺方法本工艺既可作为外购的成品高速钢刀具生产过程中的最终热处理工序。其工艺过程包括:去油、酸洗、中和、钼硫共渗、浸油五个步骤。 (1) 去油去油液用苛性钠(50～75g/1)+磷酸钠(50～7.5g/1)+硅酸钠(20～25g/1),溶液温度60～80℃,清洗时间30～60min。取出后用清水冲洗干净。 (2) 酸洗目的是去掉氧化膜,活化 At present, iron-based and nickel-base superalloys that are widely used in the aviation industry are difficult to process though they have excellent serviceability. With high-speed steel cutting tool processing of these materials, the widespread collapse of the edge, broken, the problem of low life. In order to improve the service life of high-speed steel cutting tools for cutting difficult-to-machine materials, we conducted the molybdenum-sulfur-sulfur-osmosis test of high-speed steel cutting tools. 1. Process Methods The process can be used as a purchased high-speed steel products in the final production process of heat treatment process. The process includes: degreasing, pickling, neutralization, molybdenum sulfur co-infiltration, oil-immersed five steps. (1) degreasing oil to caustic soda (50 ~ 75g / 1) + sodium phosphate (50 ~ 7.5g / 1) + sodium silicate (20 ~ 25g / 1), the solution temperature 60 ~ 80 ℃, cleaning time 30 ~ 60min. Rinse off with water after removing. (2) pickling purpose is to remove the oxide film, activated