超超临界汽轮机用耐热钢热处理工艺的优化

基金项目:

国家863计划资助项目(2002AA526013)

详细信息

Optimization of Heat Treatment Process for Heat-resistant Steel of Ultra Supercritical Steam Turbine

摘要: 采用正交试验方法研究了超超临界汽轮机用耐热钢ZG1Cr10MoWVNbN的热处理工艺,分析了正火温度、保温时间和回火温度三个主要因素对该钢组织和性能的影响规律,对其热处理工艺进行了优化.结果表明:在1 100 ℃保温5 h后空冷正火处理,然后670 ℃保温5 h回火后随炉冷到300 ℃以下出炉空冷,其综合力学性能最佳.
- 超超临界汽轮机 /
- 耐热钢 /
- 热处理 /
- 力学性能
Abstract: Orthogonal test method was used to optimize heat treatment process of the heat-resistant steel ZG1Cr10MoWVNbN for ultra supercritical steam turbine.The influences of three factors,i.e.normalizing temperature holding times and tempering temperature,on structures and properties of the heat-resistant steel were analyzed.The results show that optimum properties of the steel are obtained which normalized at 1 000 ℃ for 5 h,tempered at 670℃ for 5 h and cooled in furnace,then cooled in atmosphere from 300 ℃ to room temperature.
- ultra supercritical steam turbine /
- heat-resistant steel /
- heat treatment /
- mechanical properties

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