水平两侧带法兰阀体锻件多向模锻工艺  

Multi-directional die forging process of valve body forgings with flanges on both horizontal sides

作　　者：赵文成 金青林[1] 张磊 刘川[1,3] Zhao Wencheng;Jin Qinglin;Zhang Lei;Liu Chuan(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China;Tianjin Research Institute for Advanced Equipment,Tsinghua University,Tianjin 300300,China;School of Mechanical Engineering,Tsinghua University,Beijing 100084,China;State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment,Tsinghua University,Beijing 100084,China)

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650500 [2]清华大学天津高端装备研究院,天津300300 [3]清华大学机械工程系,北京100084 [4]清华大学清洁高效透平动力装备全国重点实验室,北京100084

出　　处：《锻压技术》2025年第3期89-94,共6页Forging & Stamping Technology

摘　　要：水平两侧带法兰阀体锻件采用多向模锻工艺生产时,锻件两侧法兰填充困难,锻件合格率较低。通过对锻件成形过程进行仿真分析发现,锻件两侧法兰通过水平冲头挤压方式成形时,金属首先向模具型腔中心流动,金属向模具中心的流动阻力增大后,向法兰模具型腔流动。流向法兰模具型腔的金属与模具的接触时间长,金属温度下降,金属流动阻力增大,造成锻件两侧法兰填充困难。针对此问题,提出了锻件两端法兰由水平冲头镦粗成形的工艺方案,金属流动阻力降低,提高了金属流动性,阀体锻件两侧法兰填充饱满。阀体锻件批量生产结果验证了水平冲头镦粗成形锻件两侧法兰的工艺方案可行,锻件生产稳定、可靠,锻件合格率高。When the valve body forgings with flanges on both horizontal sides were produced using multi-directional die forging process,it was difficult to fill the flanges on both sides of the forgings,and the pass rate of the forgings was relatively low.Through the simulation analysis on the forming process of the forgings,it was found that when the flanges on both sides of the forgings were formed by the extrusion of horizontal punch,the metal first flowed towards the center of die cavity.After the flow resistance of metal towards the center of die increased,it flowed towards the die cavity of flange.The metal flowing to the die cavity of flange had a long contact time,the metal temperature dropped,and the metal flow resistance increased,resulting in the difficulty of flange filling on both sides of the forgings.In view of this problem,the upsetting process scheme of the flanges on both sides of the forgings by the horizontal punch was proposed.The metal flow resistance was reduced,the metal fluidity was improved,and the flanges on both sides of the valve body forgings were fully filled.The batch production results of valve body forgings show that the upsetting process scheme for the flanges on both sides of the forgings by the horizontal punch is feasible,the production of the forgings is stable and reliable,and the qualified rate of the forgings is high.

关 键 词：阀体锻件 法兰 水平冲头 挤压 镦粗 

分 类 号：TG316.3[金属学及工艺—金属压力加工]