叶轮半固态挤压锻造过程数值模拟
Numerical Simulation on the Semi-solid Forming Process of an Impeller
摘 要
采用DEFORM3D软件对叶轮的半固态挤压锻造过程进行了数值模拟,获得了叶轮成形的主要参数变化规律.结果表明：半固态挤压锻造法可以完成叶轮的成形;叶轮的成形可分为三个阶段,叶片主要是依靠材料的挤压完成成形的,在叶片成形的中期,坯料内部尤其是叶片根部存在着变形不均匀现象,而在叶片成形后期,挤压力急剧增大,最终挤压力为2 780 kN.
半固态
数值模拟
7075铝合金
impeller
semi-solid forming
numerical simulation
7075 aluminum alloy
Abstract
Semi-solid forming process of an impeller was simulated with DEFORM3D.The changing pattern of process parameters was obtained.It is indicates that the impeller can be forged by the method of semi-solid extrusion-forging and the deforming process can be divided into 3 stages.The forming of blades is depending on the extrusion of materials.During the forming,uneven deformation is existed in the billet,especially in the field of blade root.The forging load is increased rapidly during the later stage.The maximum forging load is about 2 780 kN.
中图分类号 TG146.2 TG376.2
所属栏目
基金项目
收稿日期 2006/9/30
修改稿日期 2007/1/18
网络出版日期
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备注王卫卫(1958-),男,山西长治人,教授,硕士.
引用该论文: WANG Wei-wei,JIANG Xiao-hui,HAN Fei. Numerical Simulation on the Semi-solid Forming Process of an Impeller[J]. Materials for mechancial engineering, 2007, 31(3): 51～53
王卫卫,姜晓辉,韩飞. 叶轮半固态挤压锻造过程数值模拟[J]. 机械工程材料, 2007, 31(3): 51～53
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参考文献
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【3】王振军,杨方,齐乐华,等.Al2O3sf/LY12 棒材半固态挤压工艺温度场的有限元模拟与分析[J].机械工程材料,2006,30(2):9-12.
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【5】Wang W W,Song Jianli,Han Fei.Semi-solid microstructure and its evolution of LC9 aluminum alloys prepared with directly heating-isothermal treatment method[J].Transactions of Nonferrous Metals Society of China,2003,13(S1):94-97.
【6】田文彤.LC4合金半固态坯SIMA生成及触变成形研究[D].哈尔滨:哈尔滨工业大学,2002:4-49.
【7】Hu Z M,Broocks J W,Dean A.Three-dimensional finite element modeling of forging of a titanium alloy aerofoil sectioned blade[J].J of Manufacturing Science and Engineering,1999,121:166-371.
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