高温高压阀体的多向模锻技术研究  

Study on multi-ram forging technology of high temperature high pressure valve body

作　　者：任运来[1,2] 李明权 任杰[1] 刘世超[2] 聂绍珉[2] 

机构地区：[1]上海电机学院,上海200240 [2]先进锻压成形技术与科学教育部重点实验室(燕山大学),河北秦皇岛066004 [3]中国二十二冶集团有限公司,河北唐山063030

出　　处：《重型机械》2015年第5期1-5,共5页Heavy Machinery

基　　金：国家科技重大专项资助项目-大型多向模锻制造共性技术研究(2012ZX04010082);上海市教育委员会上海高校知识服务平台建设项目(ZF1225)

摘　　要：为使火电机组阀体满足高蒸汽参数下的技术性能要求,进行了高温高压阀体的多向模锻研究。介绍了多向模锻工艺的特点,以火电机组3吋闸阀阀体的多向模锻为例,阐述了制定多向模锻工艺的原则与方法,设计了3吋闸阀阀体的多向模锻模具,采用数值计算方法,研究了多向模锻技术特有的模具动作顺序对成形载荷的影响,得到了模具动作顺序对合模力、垂直冲头压入载荷、水平冲头压入载荷以及模具温度场的影响规律。在40MN多向模锻液压机上进行了3吋闸阀阀体的多向模锻成形试验,获得了尺寸合格的锻件,按技术要求,对3吋闸阀阀体进行了力学性能与纤维流线检验,结果表明:远优于阀体技术要求的指标。In order to make the valve body of the fossil power unit meet technical characteristics requirementunder high steam parameter, the multi-ram forging technology of high temperature high pressure valve body aredeveloped. Take the multi-ram forging technology of 3 inch sluice valve body for example, this paper expoundedtechnical principle and method of multi-ram forging technology, a multi-ram forging die of 3 inch sluice valvebody are designed. The influence of different die order on forming load is researched by numerical calculation,which is only in the technology of multi-ram forging. Then it is obtained that the influence rule of different dieorder by the force of up-die and down--die closing, the pressing-in load of vertical punch and horizontal punch,the temperature field of die, and so on. A multi-directional forging forming test of 3-inch sluice valve body isdone in 40MN multi-ram forging hydraulic machine, and forging size is qualified. According to technical re-quirements, it made that the mechanical property test and the fiber flow line test for the valve body, the resultsshowed it is far superior to the technical requirements of the national standard indicators.

关 键 词：多向模锻 高温高压阀体 塑性成形 数值计算 

分 类 号：TG316[金属学及工艺—金属压力加工]