大型汽轮机低压转子混晶缺陷预防工艺措施研究  

Study on forging technology preventing mixed grain structure defect in huge lower pressure steam turbine rotor

作　　者：金泉林[1] 

机构地区：[1]机械科学研究总院先进制造技术研究中心,北京100083

出　　处：《锻压技术》2012年第4期8-13,共6页Forging & Stamping Technology

基　　金：机械部七五科技攻关资助项目(862A2014);机械部基金资助项目(95JA0404);八五科技攻关资助项目(8530204041);科技部攀登B项目;国家重点基础研究发展计划资助项目(G2000067208-2;2006CB605208-3;2011CB606306-3)

摘　　要：揭示了大型汽轮机低压转子锻件产生混晶缺陷的主要原因,提出消除混晶缺陷的锻造工艺措施,通过生产验证和晶粒度数值计算验证,获得了锻造300和1000MW两种汽轮机低压转子的具体工艺参数,申请并授权了两项发明专利。The cause of the mixed grain structure defect in huge lower pressure steam turbine rotor was discovered, and a new forging technology to prevent the mixed grain structure defect was suggested. Two sets of forging processing pa- rameters for 300MW and 1000MW LP steam turbine rotors were given and validated by production application and nu merical prediction of grain size. Two state invention patents on above technologies have been authorized in China.

关 键 词：大型汽轮机低压转子 混晶缺陷 热锻工艺 数值模拟 晶粒度预测 

分 类 号：TG316[金属学及工艺—金属压力加工]