网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
块体材料连续变断面循环挤压形状参数的优化
英文标题:Optimization on shape parameters of continuous variable cross-section recycled extrusion for bulk material
作者:杜忠泽 吴晨 王庆娟 路超 刘长瑞 
单位:西安建筑科技大学 
关键词:块体材料 连续变断面循环挤压 形状参数 金属流动 镦粗 
分类号:TG316.3
出版年,卷(期):页码:2017,42(11):55-61
摘要:

采用连续变断面循环挤压(Continuous Variable Cross-section Recycled ExtrusionCVCE)法对矩形截面的铸态铅块进行挤压和回复镦粗变形,研究了原始坯料高径比、挤压角度等形状参数对块体变形后的外部形状和内部金属流动规律的影响。结果表明:经CVCE工艺镦粗后的试样,由于金属的径向流动和侧面金属翻平的共同作用,导致上底面面积增大,这种变形自上而下依次渗透并逐层减少;坯料在竖直方向上受到挤压而产生的变形有传递的作用,自上而下,各层的压缩量逐渐减少。当挤压角度为6°、原始坯料高径比为1.83时,循环挤压回复到原始形状的效果最好,且制品表面质量更好,内部金属流动较为均匀。

The extrusion and recovery upsetting deformation of as-cast plumbum bulk with rectangle cross section were realized by continuous variable cross-section recycled extrusion(CVCE), and the influences of shape parameters including height-diameter ratio of original billet and extrusion angle on external form and internal metal flow law of bulk after deformation were investigated. The results show that the combined effects of metal flow along the radial and lateral metal flatting lead to bottom area enlargement of top surface after upsetting by CVCE process, which permeates in sequence from up to down and decreases layer by layer. From up to down,the compression of each layer gradually decreases for the transmission effects of deformation produced by the extrusion on billet in vertical direction. When the compression angle is 6° and the height-diameter ratio of original billet is 1.83,the effect of recovery to original shape after cyclic extrusion is the best, and the product is of better-quality surface and uniform metal flow.
基金项目:
国家自然科学基金资助项目(51104113)
作者简介:
作者简介:杜忠泽(1968-),男,博士,教授 E-mail:duzhongze126.com 通信作者:吴晨(1993-),女,硕士研究生 E-mail:386729645@qq.com
参考文献:
[1]任伟杰,林金保. 大塑性变形技术在工业领域的应用研究进展[J]. 材料导报, 2015, 29(4) :89-94.

Ren W J, Lin J B.Industrial application of severe plastic deformation technology[J].Materials Review, 2015, 29(4):89-94.

[2]刘莹莹,刘长瑞,王庆娟,等.工艺参数对连续变断面圆柱体镦粗变形特征的影响[J].材料热处理学报,2014,35(12):74-79.

Liu Y Y, Liu C R, Wang Q J, et al. Effects of processing parameters on deformation characteristics of continuous variable cross-section cylinder in upsetting[J]. Transaction of Metals and Heat Treatment, 2014, 35(12): 74-79

[3]郭宇光.不同的强化方式对金属材料的强化作用[J].工程技术,2015,(1):102.

Guo Y G.Intensify effect of different intensify ways on metal materials[J].Engineering Technology, 2015,(1):102.

[4]刘满屏, 王俊, 蒋婷慧, 等. 高压扭转大塑性变形Al-Mg铝合金中的层错和形变孪晶[J]. 中国有色金属学报, 2014,24(6):1383-1392.

Liu M P, Wang J, Jiang T H,et al. Stacking faults and deformation twins in Al-Mg alloys subjected to high pressure torsion[J]. The Chinese Journal of Nonferrous Metals, 2014, 24(6): 1383-1392

[5]宋鸿武,陈岩,程明. 异种金属层状复合材料累积叠轧工艺的研究进展[J].材料导报, 2011,25(10):7-11.

Song H W,Chen Y,Cheng M. Progress in the accumulative roll banding of clad bimetals[J]. Materials Review, 2011,25(10):7-11.

[6]Vega M C V, Bolmaro R E, Ferrante M,et al. The influence of deformation path on strain characteristics of AA1050 aluminium processed by equal-channel angular pressing followed by rolling[J]. Materials Science & Engineering A, 2015,646:154-162.

[7]Song J, Wang L M, Zhang X N,et al. Effects of second phases on mechanical properties and martensitic transformations of ECAPed Ti-Ni and Ti-Mo based shape memory alloys[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(8): 1839-1848.

[8]Islamgaliev R K, Kazyhanov V U, Shestakova L O, et al. Microstructure and mechanical properties of titanium (Grade 4) processed by high-pressure torsion[J]. Materials Science and Engineering A,2008, 493(1): 190-194.

[9]Raducanu D, Vasilescu E, Cojocaruv D, et al.Mechanical and corrosion resistance of a new nanostructured Ti-Zr-Ta-Nb alloy[J]. Journal of the Mechanical Behavior of Biomedical Materials, 2011, 4(7): 1421-1430.

[10]Xu F, Yan Y B. The research situation of refining titanium and titanium alloys by using multi-direction forging[J]. Titanium Industry Progress, 2012, 29(2): 15-18.

[11]陈明,刘长瑞,杜忠泽,等. 连续变断面体挤压过程金属的变形特征[J].热加工工艺,2007,36(17):43-45.

Chen M ,Liu C R,Du Z Z,et al. Deformation behaviors of metals by continuous variable cross-section recycled extrusion[J].Hot Working Technology, 2007,36(17):43-45.

[12]李洁,刘莹莹,王庆娟,等. 连续变断面循环挤压对TC4合金组织的影响[J]. 中国有色金属学报,2015,25(2):344-350.

Li J,Liu Y Y,Wang Q J, et al. Effect of continuous variable cross-section recycling extrusion on microstructure of TC4 alloy[J]. The Chinese Journal of Nonferrous Metals, 2015,25(2):344-350.

[13]刘长瑞,任红霞,王庆娟. 连续变断面循环挤压AZ31镁合金的组织与性能[J]. 轻合金加工技术,2009,37(7):34-37.

Liu C R,Ren H X,Wang Q J. Microstructure and properties of AZ31 magnesium alloy by continuous variable cross-section recycled extrusion[J].Light Alloy Fabrication Technology, 2009,37(7):34-37.

[14]刘长瑞,王庆娟,杜忠泽,等.连续变断面循环挤压制备细晶材料的新方法[J].稀有金属材料与工程,2009,38(1):257-260.

Liu C R,Wang Q J,Du Z Z, et al. Technology of producing refined grain materials by continuous variable cross-section recycled extrusion[J].Rare Metals Material and Engineering, 2009,38(1):257-260.

[15]徐凯,韩维群,赛音,等. TA12A高温钛合金超塑性工艺参数实验研究[J]. 锻压技术,2016,41(7):51-56.

Xu K,Han W Q,Sai Y,et al. Experimental research on super-plastic parameters of high temperature titanium alloy TA12A[J]. Forging & Stamping Technology,2016,41(7):51-56. 

[16]张新和,庄新村,赵幸锋.冷锻模具寿命评估方法研究现状与进展[J].锻压技术,2016,41(8):7-11.

Zhang X H,Zhuang X C,Zhao X F.Research status and advances of life assessment method for cold forging die [J]. Forging & Stamping Technology,2016,41(8):7-11.

[17]黄凯,白鸿柏,路纯红,等.无网格法及其在金属成形中的应用综述[J]. 锻压技术,2016,41(2):12-16.

Huang K,Bai H B,Lu C H,et al. Summarization on meshfree method and its application in metal forming [J]. Forging & Stamping Technology,2016,41(2):12-16.

[18]周小京,李国俊,张治民,等.不同高宽比对铝合金桥形件成形性的影响[J].锻压技术,2016,41(11):9-14.

Zhou X J,Li G J,Zhang Z M,et al. Influences of different aspect ratios on formability of aluminum alloy bridge-shaped parts[J].Forging & Stamping Technology,2016,41(11):9-14.
服务与反馈:
本网站尚未开通全文下载服务】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管 北京机电研究所有限公司 中国机械工程学会塑性工程分会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-62920652 +86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备09032115号-5