介绍了新研制成功的淬火剂的冷却性能、工艺特性和耐老化性能，并用于汽车零件替代油淬火，获得了比较满意的应用效果，旦价格较油和同类水溶性淬火介质低． The cooling performance, process characteristics and aging resistance of newly developed quenching agent are introduced. It is also used in automobile parts instead of oil quenching, and the satisfactory application effect is obtained. The price is lower than that of oil and similar water-soluble quenching medium.