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本文针对FATT50≤80℃高中压转子热处理工艺进行了优化,重点对我公司以往生产的此类高中压转子的冶炼方式、化学成分、晶粒度、夹杂物、碳当量、性能结果、工艺参数进行总结、统计分析。通过模拟试验摸索水淬油冷对转子高温持久性能是否有影响。有针对性地确定晶粒度和夹杂物验收指标、制定合理化学成分、碳当量和最佳热处理工艺参数。结果表明该工艺方案在保证高中压转子其余各项性能指标合格的前提下明显改善了FATT50结果。
In this paper, the heat treatment process of high and medium pressure rotors with FATT50≤80 ℃ is optimized, and the smelting methods, chemical composition, grain size, inclusions, carbon equivalent, performance results and process parameters of such high and medium pressure rotors produced by our company are emphasized Summary, statistical analysis. Through simulation test to explore water quenching oil rotor permanent high temperature performance is affected. Targeted to determine grain size and inclusions acceptance indicators, the development of reasonable chemical composition, carbon equivalent and the best heat treatment process parameters. The results show that the process scheme can significantly improve the FATT50 results under the premise of ensuring the rest of the performance indicators of high and medium pressure rotors.