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本文介绍了ＱＰＱ（“淬火”－“抛光”－“淬火”的英文缩写）盐浴复合处理新工艺的技术原理、处理过程及应用范围，并分析了此项工艺的特点及处理件的性能。
This paper introduces the technical principle, treatment process and application range of QPQ (“Quenching” - “Polishing” - “Quenching” abbreviation) salt bath compound treatment new process, and analyzes the characteristics of this process and the performance of treatment parts.