The results show that the quenching medium of water-solubility has effectively solved the difficult problems:such as non-hardening of oil quenching and fissility of water quenching; 用水溶性淬火介质代替传统淬火介质进行热处理可增加效益,提高工件质量,改善工作环境;生产实践证明,水溶性淬火介质有效地解决了油淬不硬、水淬易裂的难题,避免了淬裂和软点的形成;