[1]吴继超,张艳秋,赵亚楠,等.铝合金环形座锻件等温精密成形工艺研究[J].应用科技,2014,41(01):59-64.[doi:10.3969/j.issn.1009-671X. 201302002]
 WU Jichao,ZHANG Yanqiu,ZHAO Yanan,et al.Study on isothermal precision forging process of an aluminum alloy ring seat[J].Applied science and technology,2014,41(01):59-64.[doi:10.3969/j.issn.1009-671X. 201302002]
点击复制

铝合金环形座锻件等温精密成形工艺研究(/HTML)
分享到:

《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第41卷
期数:
2014年01期
页码:
59-64
栏目:
机电工程
出版日期:
2014-02-05

文章信息/Info

Title:
Study on isothermal precision forging process of an aluminum alloy ring seat
文章编号:
1009-671X(2014)01-0059-06
作者:
吴继超1 张艳秋2赵亚楠2江树勇2单德彬3
1. 哈尔滨飞机工业集团 工程技术部, 黑龙江 哈尔滨150060
2. 哈尔滨工程大学 工程训练中心, 黑龙江 哈尔滨150001
3. 哈尔滨工业大学 材料科学与工程学院, 黑龙江 哈尔滨150001
Author(s):
WU Jichao1 ZHANG Yanqiu2 ZHAO Yanan2 JIANG Shuyong2 SHAN Debin3
1. Engineering Technology Department, Harbin Aircraft Industry Group Co., Ltd., Harbin 150060, China
2. Industrial Training Centre, Harbin Engineering University, Harbin 150001, China
3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
关键词:
铝合金锻造等温精密锻造有限元法
Keywords:
aluminum alloy forging process isothermal precision forging finite element method
分类号:
TG316
DOI:
10.3969/j.issn.1009-671X. 201302002
文献标志码:
A
摘要:
为选择合适的铝合金环形座锻件等温精密成形工艺,防止各种缺陷的发生,并使其获得合格的力学性能和抗应力腐蚀性能,采用有限元方法模拟了环形座锻件的成形过程。分析了成形时的金属流动规律,并通过预锻制坯和三次模锻工艺形成了外形完美、性能合格的高质量铝合金环形座锻件。结果表明,环形座外环壁表面处易受剧烈剪切变形而产生粗晶缺陷,因此应适当减小该处的坯料体积。坯料设计时应精确计算体积,避免多余金属过多引起终锻后期的大量金属外排,从而防止外环壁折叠缺陷的产生。通过采用多次模锻的方法在每次模锻后去除多余飞边和连皮,既可以减小下一阶段模锻成形过程中飞边桥部的阻力,降低模压力,又可以防止终锻时大量金属外排造成的折叠缺陷。
Abstract:
In order to choose an appropriate process for the isothermal precision forging of an aluminum alloy ring seat, prevent the occurrence of various defects and make the alloy possess qualified mechanical properties as well as resistance to stress corrosion, the finite element method (FEM) was adopted to simulate the forming process of the ring seat forging. The laws of metal flow were analyzed and high-quality aluminum alloy forging of the ring seat with perfect shape and appropriate performance were obtained by combining preforging with three times of die forging. The results show that severe shear deformation is easy to occur on the wall surface of the outer ring of the ring seat, which shall result in the coarse-grained defect, so the billet volume in the zone should be decreased properly. Billet volume should be calculated accurately in the process of billet design so as to avoid the outflow of plenty of metal caused by the excess metal in the late stage of final forging, which can avoid the folding defect in the wall of outer ring. By means of multiple die forging, excess metal in flash and wad is removed after each die forging step, which can not only reduce the resistance of the flash bridge in the next stage of die forging to lessen the forging force, but also prevent the folding defect caused by overabundance metal in the final die forging.

参考文献/References:

[1] SHAN D B, XU W C, SI C H, et al. Research on local loading method for an aluminium-alloy hatch with cross ribs and thin webs[J]. Journal of Materials Processing Technology, 2007, 187-188: 480-485.
[2] SHAN D B, LIU F, XU W C, et al. Experimental study on process of precision forging of an aluminium-alloy rotor[J]. Journal of Materials Processing Technology, 2005, 170 (1/2): 412-415.
[3] 杨平, 单德彬, 高双胜, 等. 筋板类锻件等温精密成形技术研究 [J]. 锻压技术, 2006(3): 55-58.
[4] 张艳秋, 庄树军, 徐福昌, 等. 复杂盘饼类锻件等温精密成型工艺 [J]. 航空制造技术, 2006, 专刊: 447-452.
[5] 吴继超, 张艳秋,赵亚楠,等. 复杂盘饼类锻件等温精密塑性成形数字化设计[J]. 应用科技, 2013, 40(1): 14-20.
[6] ZRINK J, STEJSKAL O, NOVY Z, et al. Relationship of microstructure and mechanical properties of TRIP-aided steel processed by press forging[J]. Journal of Materials Processing Technology, 2007, 192/193: 367-372.
[7] CECCHETTO L, ALAIN D, DIDIER D, et al. A silane pre-treatment for improving corrosion resistance performances of emeraldine base-coated aluminium samples in neutral environment[J]. Applied Surface Science, 2008, 254(6): 1736-1743.
[8] 李小强, 李元元, 胡连喜, 等. 多道次镦-挤大变形对2024铝合金组织性能的影响[J]. 金属成形工艺, 2003, 21(5): 37-39.
[9] DU F S, WANG M T, LI X T. Research on deformation and microstructure evolution during forging of large-scale parts[J]. Journal of Materials Processing Technology, 2007, 187/188: 591-594.
[10] 曾渝, 尹志民, 朱远志, 等. RRA处理对超高强铝合金微观组织与性能的影响[J]. 中国有色金属学报, 2004, 14(7): 1188-1194. [11] 张艳秋, 徐福昌, 单德彬. 变形程度对复杂铝合金锻件组织性能的影响[J]. 材料科学与工艺, 2009, 17(6): 806-809.
[12] ZHANG Y Q, JIANG S Y, ZHAO Y N, et al. Isothermal precision forging of complex-shape rotating disk of aluminum alloy based on processing map and digitized technology[J]. Materials Science & Engineering A, 2013, 580: 294-304.
[13] 金相图谱编写组. 变形铝合金金相图谱[M]. 北京: 冶金 工业出版社, 1975: 156-176.

备注/Memo

备注/Memo:
收稿日期:2013-02-20.
基金项目:国家自然科学基金资助项目(50775051).
作者简介:吴继超(1973-), 男, 高级工程师; 张艳秋(1973-), 女,讲师,博士.
通信作者:张艳秋(1973-), E-mail: zhangyq@hrbeu.edu.cn.
更新日期/Last Update: 2014-04-09