第42卷第4期 Vol. 42No. 4
假压技术
FORGING & STAMPING TECHNOLOGY
锥孔锻件自动化闭式热挤压工艺闫红艳，徐超，王志科，谢谈，郭永强
（北京机电研究所，北京100083）
2017年4月 Apr.2017
摘要：针对错固装置中的锚套典型件，设计了自动化热挤压工艺。试生产中出现锻件质量不稳定和模具寿命太低等问愿，导致难以实现自动化生产。质量不稳定的表现是锻件同轴度超差且无规律，模拟分析了预锻同轴度对成形凸模等效应力和偏移量的影响，并通过提高坏料尺寸精度和调整锻租高度解决了同轴度的向题，使锻件同轴度从最大0.86mm减小到.4mm 以内，确保了锻件质量稳定合格。成形凸模失效的表现是磨损，模拟分析了不同材料、润滑系数、凸模长径比对模具磨损量的影响，并通过实验确定：润滑剂采用水基石墨，凸模材料采用3C2W8V钢，将模具寿命从1500件提高到10000件以上，可以连续生产20h以上。最终实现班产不换模具且无废品，达到自动化生产的要求。
关键词：锚套：热挤压：同轴度：磨损：自动化 DOI: 10. 13330/j. issn. 1000-3940. 2017. 04. 020
中图分类号：TG316
文献标识码：A
文章编号：1000-3940（2017）04-0109-08
Automaticclosedhotextrusionprocessofconeholeforging
Yan Hongyan, Xu Chao, Wang Zhike, Xie Tan, Guo Yongqiang
( Beijing Research Institute of Mechanical & Electrical Technology , Beijing 100083 , China)
Suao arei al. paasap sem saod tosna on oeuone ue *aoaap Suaorpue roy araos roe o sed [rodk a roy esq quality and short die lifetime during the production hindered the realization of automated production. The performanoe of quality instability was the coaxiality of big tolerance and not regular in the forging. Then, the influences of pre-forging coaxiality on the equivalent stress and offset of forming punch were simulated and analyzed. Therefore, the problem of coaxiality was solved by improving the blank size accuracy and adjusting the upseting height, and its coaxiality was reduced from (0. 86 mm to c0. 4 mmn or less to ensure the stable forging quality. However, the fomming punch failure displayed the wear, and the influences of different materials, lubrication coefficient and punch length to diameter ratio on the die wear were simulated and analyzed. The experiment results show that the die life is increased from 1500 pieces to 10000 pieces with water-based graphite lubricant and punch material 3Cr2W8V steel, and the continuous proxduction is up to 20 hours at least Finally, a day without changing dies and defects unqualified forgings can be realized to achieve the requirements of automated production. Key words: anchor sleeve; hot extrusion; coaxiality; wear; automation
锚套属于圆柱体锥孔件，广泛应用于各种工程收日期：20161223；修订日期：20170220
基金项目：国家国际科技合作专项项目（2015DFA51740）
作者简介：红艳（1979-），女，頭士研究生，高级工程师 E-mail: yanhongyan2013@ 126. com
通讯作者：谢谈（1953-），男，学士，教授级高工 E-mail: xietan@ jds. a
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万方数据
建设中，对强度有很高要求。传统生产方式主要包括圆钢直接机加工和开式热模锻等，这些传统生产方式存在生产效率低、材料利用率低和加工成本高等间题。采用热挤压工艺能使铺套产品得到完整的金属流线分布，提高锚套锻件的整体力学性能及产品质量，还可以节材、节能、降低生产成本"。但常规热挤压工艺大多是在液压机上的单工序挤压成
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特种成形栏目是由北京机电研究所塑性工程技术中心①赞助刊出