复合镦挤工艺批生产质量和效率提升研究  

Study on the batch production quality and efficiency improvement of composite upsetting process

作　　者：颉赞尧 王伟光 刘前宁 吴耀金 于建民[2] 李琳琳 Xie Zanyao;Wang Weiguang;Liu Qianning;Wu Yaojin;Yu Jianmin;Li Linlin(School of Aerospace Engineering,North University of China,Shanxi Taiyuan,030051,China;School of Materials Science and Engineering,North University of China,Shanxi Taiyuan,030051,China;School of Mechanical and Vehicle Engineering,Jilin Engineering Normal University,Jilin Changchun,130052,China)

机构地区：[1]中北大学航空宇航学院,山西太原030051 [2]中北大学材料科学与工程学院,山西太原030051 [3]吉林工程技术师范学院机械与车辆工程学院,吉林长春130052

出　　处：《机械设计与制造工程》2024年第3期107-111,共5页Machine Design and Manufacturing Engineering

基　　金：中央引导地方科技发展资金(YDZJSX2021C006);吉林省科技厅自然科学基金(20200201012JC)。

摘　　要：基于航天与国防军工等领域对高强韧镁合金坯料产品的大量需求,以复合镦挤工艺为研究对象,开展了该工艺应用于产业化的批生产适应性研究。针对该工艺产业化过程中镦挤产生的压余过大、处理压余导致的工序不连续和镦挤大高径比坯料时挤出坯料弯曲的问题,提出3种改进方案,通过三维建模、数值模拟和成形工艺试验进行了验证。结果表明:挤压模口下方导引板的设计,将原本弯曲1.90°的坯料矫正为0.01°,有效提高了坯料成形直线度;复合镦挤无压余技术的应用,减少了10%的坯料损耗,避免了不必要的工序;连续生产快换模具结构的设计,使得仅更换模具部分构件就可以生产不同规格的坯料,实现连续镦挤,提高了生产效率和模具使用寿命。Based on the large demand for high strength and toughness magnesium alloy billet products in aerospace and defense industry,this paper takes the composite upsetting and extruding process as the research object,and carries out the research on the batch production adaptability of the process applied in industrialization.In view of the problems of excessive pressure shear produced by upsetting and extrusion,process discontinuity caused by handling pressure balance and bending of extruded billet when upsetting and extruding billet with large height to diameter ratio in the industrialization of the process,three improvement schemes are proposed,which are verified through three-dimensional modeling,numerical simulation and molding process test.The results show that:the design of the guide plate under the extrusion die mouth corrects the original bending of 1.90°to 0.01°,which effectively improves the straightness of billet forming;the use of composite upsetting without pressure balance technology reduces the billet loss by 10%and avoids unnecessary processes;the design of the quick-change tooling for continuous production can produce billets with different specifications and realize continuous upsetting,which improves the production efficiency and the service life of the tooling.The design of continuous production quick-change mold structure can produce blanks of different specifications,realizing continuous upsetting,improving production efficiency and mold service life.

关 键 词：镁合金 成形质量 复合镦挤 材料利用率 Deform数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]