基于变形功法连续挤压成形过程温度模型
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摘要
在连续挤压成形工艺过程中,变形温度是影响产品性能和工装模具寿命的关键因素。文章根据连续挤压的变形特征对成形过程进行分区分析,并基于能量平衡原理的变形方法,建立各区域的温度模型,构建了全过程温度预测模型,预测结果与数值模拟结果一致;以H62黄铜为工程实验材料,在连续挤压成形过程中,对挡料块和产品出口处进行温度测试。结果表明,温度模型预测值与实验测量值吻合良好。该温度模型可快速有效预测连续挤压成形过程中的温度分布,从而实现对产品性能及工装模具寿命的合理预测。
In continuous extrusion forming process,the deformation temperature is the key to affect the product performance and die life.In this paper,the continuous extrusion process was divided into six partitions according to the characteristics of the deformation,and the temperature models of all the partitions for the whole process were built based on deformation work method.The predicted results were consistent with the simulation results.Using H62 brass alloy as experimental material,the temperatures of the abutment and the export of the product were tested for continuous extrusion process.By comparison,the calculation results of temperature model are matched well with the actual measured temperature.The temperature model can be used in predicting the temperature field effectively and rapidly for the continuous extrusion forming process,and then in forecasting the product properties and the workpiece life.
In continuous extrusion forming process,the deformation temperature is the key to affect the product performance and die life.In this paper,the continuous extrusion process was divided into six partitions according to the characteristics of the deformation,and the temperature models of all the partitions for the whole process were built based on deformation work method.The predicted results were consistent with the simulation results.Using H62 brass alloy as experimental material,the temperatures of the abutment and the export of the product were tested for continuous extrusion process.By comparison,the calculation results of temperature model are matched well with the actual measured temperature.The temperature model can be used in predicting the temperature field effectively and rapidly for the continuous extrusion forming process,and then in forecasting the product properties and the workpiece life.
引文
[1]储灿东,王东哲,彭颖红等.连续挤压成形过程的温度场研究[J].塑性工程学报,2001.8(1):9-12
[2]徐玉松,陆敏松,支海军等.银铜合金连续挤压工艺研究[J].热加工工艺,2009.38(19):108-111
[3]刘岩,樊志新,贺旭东等.TLJ400型连续挤压机腔体温度场的实验研究[J].锻压装备与制造技术,2008.(3):91-93
[4]吴朋越,谢水生,鄢明等.铜扁线连续挤压过程温度场的数值模拟[J].锻压技术,2007.32(3):46-49
[5]彭岳林,黄宪曾.金属连续挤压的应力和温度(Ⅰ)基本理论[J].中国有色金属学报,1995.5(2):135-140
[6]张宇光,赵爱民,金光灿等.双相钢在塑性变形中塑性功向热能的转变[J].轧钢,2010.27(2):11-17
[7]杨要兵,余伟.船板钢轧制过程中的一种温度模型的研究[J].塑性工程学报,2006.13(3):60-64
[8]胡成武,罗文波,彭炎荣.变薄拉深力的两种理论解及其比较[J].塑性工程学报,2004.11(1):36-38
[9]黄克坚,包忠诩,陈泽中等.关于挤压变形规律理论研究方法的一些探讨[J].塑性工程学报,2003.10(4):45-51
[10]宋宝韫,樊志新,陈吉光等.铜、铝连续挤压技术特点及工业应用连续挤压技术在无氧铜带中的应用[J].稀有金属,2004.28(1):257-261
[11]隋贤,宋宝韫,李冰等.H65黄铜合金连续挤压过程中的组织和性能演变特征[J].中国有色金属学报,2009.19(6):1049-1054
[12]樊志新,宋宝韫,刘文元等.连续挤压变形力学模型与接触应力分布规律[J].中国有色金属学报,2007.17(2):283-289
[2]徐玉松,陆敏松,支海军等.银铜合金连续挤压工艺研究[J].热加工工艺,2009.38(19):108-111
[3]刘岩,樊志新,贺旭东等.TLJ400型连续挤压机腔体温度场的实验研究[J].锻压装备与制造技术,2008.(3):91-93
[4]吴朋越,谢水生,鄢明等.铜扁线连续挤压过程温度场的数值模拟[J].锻压技术,2007.32(3):46-49
[5]彭岳林,黄宪曾.金属连续挤压的应力和温度(Ⅰ)基本理论[J].中国有色金属学报,1995.5(2):135-140
[6]张宇光,赵爱民,金光灿等.双相钢在塑性变形中塑性功向热能的转变[J].轧钢,2010.27(2):11-17
[7]杨要兵,余伟.船板钢轧制过程中的一种温度模型的研究[J].塑性工程学报,2006.13(3):60-64
[8]胡成武,罗文波,彭炎荣.变薄拉深力的两种理论解及其比较[J].塑性工程学报,2004.11(1):36-38
[9]黄克坚,包忠诩,陈泽中等.关于挤压变形规律理论研究方法的一些探讨[J].塑性工程学报,2003.10(4):45-51
[10]宋宝韫,樊志新,陈吉光等.铜、铝连续挤压技术特点及工业应用连续挤压技术在无氧铜带中的应用[J].稀有金属,2004.28(1):257-261
[11]隋贤,宋宝韫,李冰等.H65黄铜合金连续挤压过程中的组织和性能演变特征[J].中国有色金属学报,2009.19(6):1049-1054
[12]樊志新,宋宝韫,刘文元等.连续挤压变形力学模型与接触应力分布规律[J].中国有色金属学报,2007.17(2):283-289