工业汽轮机汽缸用材无塑性转变温度的研究  

Research on Nil-Ductility Transition Temperature of Steel Used for Cylinder of Industrial Steam Turbine

作　　者：何成[1] 刘中华[1] 周黎明 刘京伟[3] 林云[3] 宋思远[1] 

机构地区：[1]杭州汽轮动力集团有限公司,浙江310016 [2]杭州汽轮铸锻有限公司,浙江311106 [3]杭州汽轮机股份有限公司,浙江310003

出　　处：《大型铸锻件》2016年第3期13-14,17,共3页Heavy Casting and Forging

摘　　要：针对水压试验要求试验液体温度应高于试验材料的无塑性转变温度的问题,通过落锤试验测定了工业汽轮机汽缸用材的NDT温度,并分析了影响NDT温度的因素。通过先进的冶炼技术和热加工工艺严格控制P、S含量,细化晶粒等手段,可有效降低钢材的NDT温度。The issue that the temperature of test liquid required by the hydraulic test shall be higher than the nilductility transition temperature of test material has been expressed.The NDT temperature of steel used for the cylinder of industrial steam turbine has been examined by the drop test,and the factor influenced on NDT temperature has been analyzed as well.By adopting the advanced smelting technology and heat treatment process to strictly control P and S contents,and refining the grain,NDT temperature of steel could be reduced effectively.

关 键 词：汽缸 无塑性转变温度 落锤试验 水压试验 

分 类 号：TG115.56[金属学及工艺—物理冶金]