锻压技术

基于微观组织演变模拟的H型截面锻件模具和制坯研究

英文标题：Study on dies and preform of forgings with H-shaped section based on microstructure evolution simulation

作者：李春明杨卓

单位：郑州旅游职业学院

分类号：

出版年,卷(期):页码：2014,39(7):19-24

摘要：

利用有限元模拟软件Deform-3D对典型H型截面构件的锻造过程进行数值模拟，并对不同模具和不同高宽比的坯料进行分析，可知采用闭式模具有利于此类锻件的成形，随着坯料高宽比的增大，锻件的晶粒大小、晶粒均匀性和动态再结晶体积分数都有提高，并且能降低成形载荷。利用闭式模具和高宽比较大的坯料能比较好地解决此类锻件成形所出现的粗晶、混晶及动态再结晶体积分数不高等问题，且有利于提高该类锻件的力学性能和生产设备的选择。

Using finite element simulation software Deform-3D, the forming process of H-shaped component was simulated numerically, and the different dies and blanks with different height-width ratios were analyzed. The results show that adopting closed die forming is favorable for this kind forgings. The grain size, grain uniformity and dynamic recrystallization volume fraction are improved and the forming load is reduced with the height-width ratio of blank increasing. The application of closed die and larger height-width ratio blank forming can better solve the problem of coarse grains, mixed grains and relatively low dynamic recrystallization volume fraction, etc., during the forming of this kind of forgings. Therefore, it is benefit for improving the mechanical properties of this kind forgings and the selection of production equipment.

基金项目：

河南省科技厅重点科研基金资助(豫科鉴委字［2013］第457号)

李春明（1964-）男，硕士，副教授

参考文献：

[1]Yang He, Li Luoxing, Wang Qudong. Research on the development of advanced forming for lightweight alloy materials area [J]. Journal of Mechanical Engineering, 2010, 46(12): 31-42.

[2]Clarka D A, Johnson W S. Temperatures effects on fatigue perform of cold expanded holes in 7050-T7451 aluminum alloy [J]. International Journal of Fatigue, 2003, 25(2):159-165.

[3]Deng L, Wang X Y, Xia J C, et al. Microstructural modeling and simulation of AI-2.8Cu-l.4Li alloy during elevated temperature deformation [J]. Metallurgical and Materials Transactions A, 2011, 42A (8):2509-2515.

[4]Liu G, Wang Q, Ao Y. Convenient formulas for modeling three-dimensional thermo mechanical asperity contacts [J]. Tribology International, 2002, 35(7): 411-423.

[5]Zhang D W, Yang H, Sun Z C. Analysis of local loading forming for titanium-alloy T-shaped components using slab method[J]. Journal of Materials Processing Technology, 2010, 210(2):258-266.

[6]Zhang Yanqiu, Shan Debin, Xu Fuchang. Flow lines control of disk structure with complex shape in isothermal precision forging [J].Journal of Materials Processing Technology, 2009, 209(2):745-753.

[7]Wang Menghan, Xu Zhimin, Li Yufeng, et al. Study on cross section geometry of preform for the forming laws of a symmetrical rib-web component [J]. Advanced Materials Research, 2011, 239-242: 1586-1590.

[8]刘兵，彭超群，王日初，等. 大飞机用铝合金的研究现状及展望[J]. 中国有色金属学报，2010,20(9)：1705-1715.

Liu Bing, Peng Chaoqun, Wang Richu, et al. Recent development and prospects for giant plane aluminum alloys [J]. The Chinese Journal of Nonferrous Metals, 2010, 20(9): 1705-1715.

[9]孟毅. 大型铝合金锻件成形工艺数值模拟及优化[D]. 重庆：重庆大学，2009.

Meng Yi. Numerical Simulation and Optimization for Large Al alloy Part Forging Process [D]. Chongqing: Chongqing University, 2009.

[10]朱峰，曹起骧，徐秉业，等. 核电锻件微观组织性能控制锻造[J]. 塑性工程学报，1995，2(1)：8-14.

Zhu Feng, Cao Qixiang, Xu Bingye, et al. The control forging for microstructure and property on heavy forgings in nuclear power plant [J]. Journal of Plasticity Engineering, 1995, 2(1): 8-14.

[11]张飞，陈华，付欣，等. 热变形参数对7050铝合金微观组织的影响[J]. 铝加工，2008，(183)：25-27.

Zhang Fei, Chen Hua, Fu Xin, et al. Effect of thermal deformation parameters on microstructure of 7050 aluminum alloy [J]. Aluminum Fabrication, 2008, (183):25-27.

[12]王梦寒，黄龙，张林辉. 基于微观组织演变模拟的7050铝合金法兰盘预制坯优化研究[J]. 金属热处理, 2012，37(12)：129-132.

Wang Menghan, Huang Long, Zhang Linghui. Preform optimization of 7050 aluminum alloy flange based on microstructure simulation [J]. Heat Treatment of Metals, 2012, 37(12):129-132.

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