文章摘要
陈孝学,程仁策,吕正风,赵巍,焦娟娟,赵国群,等.超大高径比棒料连续镦粗工艺及材料变形规律[J].精密成形工程,2017,9(5):148-153.
超大高径比棒料连续镦粗工艺及材料变形规律
Continuous Upsetting Process and Material Deformation Rule of Large Height-diameter Ratio Bars
投稿时间:2017-06-27  最后修改时间:2017-09-10
DOI:10.3969/j.issn.1674-6457.2017.05.022
中文关键词: 大高径比  锥形模具  镦粗工艺  失稳  钛合金
英文关键词: large height-diameter ratio  conical die  upsetting process  instability  titanium alloy
基金项目:
作者单位
陈孝学 山东大学 材料科学与工程学院济南 250061 
程仁策 山东南山铝业股份有限公司山东 烟台 265713 
吕正风 山东南山铝业股份有限公司山东 烟台 265713 
赵巍 山东南山铝业股份有限公司山东 烟台 265713 
焦娟娟 山东南山铝业股份有限公司山东 烟台 265713 
赵国群 山东大学 材料科学与工程学院济南 250061 
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中文摘要:
      目的 研究超大高径比棒料连续镦粗制坯的工艺方法及变形规律。方法 通过设计带有一定锥度的可拆卸凸凹模模块对坯料失稳进行约束,通过选择合适的锥度、镦粗次数和锻造速度,避免折叠现象的产生,并研究棒料断面不平整对变形失稳的影响。结果 与常规镦粗方法相比,可有效提高镦粗变形的均匀性。结论 提出了一种适用于超大高径比棒料连续镦粗的锥形模具结构及其成形工艺方法。
英文摘要:
      The paper aims to study the continuous upsetting process and the material deformation rules of large height-diameter ratio bars. A series of detachable upper punch and lower die modules with a certain taper were designed to constrain the instability of bars. By choosing appropriate taper, upsetting times and forging speed, the folding phenomenon could be avoided effectively. Influences of bar cross section on deformation instability were also studied. Compared with the conventional upsetting method, the forming process and die presented in this paper could improve the uniformity of metal deformation effectively. A conical die structure and forming process suitable for the continuous upsetting of large height-diameter ratio bars is proposed.
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