锻压技术

坯料放置位置对TC18钛合金支柱模锻过程的影响

英文标题：Influence of billet setting position on die forging process of TC18 titanium alloy strut

作者：张大伟景飞赵升吨李蓬川罗恒军

分类号：TG316

出版年,卷(期):页码：2014,39(12):1-5

摘要：

坯料初始放置位置在模锻成形过程中起着重要作用，影响着成形过程中的材料流动和型腔充填。采用有限元方法研究了钛合金支柱锻造成形，对不同坯料初始放置位置的模锻过程进行了数值模拟。定义了描述坯料放置位置参数x，分析了在锻造过程中不同坯料放置位置的材料流动和型腔充填情况。研究结果表明：由于坯料和模具的几何特征，坯料在成形初期存在一个向右刚性移动的阶段，不同放置位置的刚性右移距离不等；不恰当的坯料放置位置容易导致折叠和充不满缺陷；随着x增大，左侧型腔由充满到充不满转变，右侧型腔由充不满到充满转变；在x=-42 mm处左右两侧型腔都充满，并且没有发现折叠缺陷。

Initial setting position of billet plays a crucial role in die forging process, and has an important influence on material flow and cavity filling in the die forging process. Die forging process of titanium alloy strut was investigated by finite element method, and the numerical simulations of the processes under different initial setting positions of billet were carried out. The parameter x was defined to describe the setting position of billet. The material flow and cavity filling in the forging processes under different setting positions of billet were analyzed. The results show that in the initial forming stage, the billet has a rigid movement to the right due to the geometric characteristics of both billet and die, and the moving distance is changing for different setting positions. Improper setting position of billet is prone to causing defects such as folding and under-filling. With increasing of x, left cavity changes from filling to under-filling, while right cavity changes from under-filling to filling. However, both left and right cavities are filled up when x is about -42 mm, and folding is invisible.

基金项目：

国家科技重大专项（2011ZX04016-081）

张大伟（1982-），男，博士，讲师

参考文献：

[1]沙爱学, 李兴无, 王庆如, 等. 热变形温度对TC18钛合金显微组织和力学性能的影响[J]. 中国有色金属学报, 2005, 15(8): 1167-1172.

Sha A X, Li X W, Wang Q R, et al. Influence of hot deformation temperature on microstructure and mechanical properties of TC18 alloy \[J\]. The Chinese Journal of Nonferrous Metals，2005, 15(8): 1167-1172.

[2]王新平, 李礼, 张晓泳, 等. TC18钛合金变形本构关系及其热轧过程有限元仿真分析的应用[J]. 中国有色金属学报, 2013, 23(2): 379-388.

Wang X P, Li L, Zhang X Y, et al. Constitutive relationship and its application in finite element simulation of hot rolling of TC18 titanium alloy \[J\]. The Chinese Journal of Nonferrous Metals, 2013, 23(2): 379-388.

[3]张永强, 郭鸿镇, 刘瑞, 等. TC18合金β相区等温锻造显微组织和力学性能[J]. 稀有金属与工程, 2013, 42(3): 634-638.

Zhang Y Q, Guo H Z, Liu R, et al. Microstructure and mechanical properties of β isothermal forged TC18 alloy[J]. Rare Metal Materials and Engineering, 2013, 42(3): 634-638.

[4]Barcellona A, Cannizzaro L, Antonelli D. Application of a decision making method to improve and industrial hot extrusion forging process[J]. CIRP Annals Manufacturing Technology, 1999, 48(1): 195-198.

[5]Akgerman N, Kasik D J. Computer-aided process design and simulation for forging of turbine blades[A]. Proceedings of the 11th Design Automation Workshop[C].NewJersey, 1974.

[6]Soltani B, Mattiasson K, Samuelsson A. Implicit and dynamic explicit solutions of blade forging using the finite element method[J]. Journal of Materials Processing Technology, 1994, 45（1）: 69-74.

[7]Zhan M, Liu Y L, Yang H. Influence of the shape and position of the prefom in the precision forging of a compressor blade[J]. Journal of Materials Processing Technology, 2002, 120（1）:80-83.

[8]刘郁丽, 杨合, 詹梅. 摩擦对叶片精锻预成形毛坯放置位置影响规律的研究[J]. 机械工程学报, 2003, 39(1): 97-100.

Liu Y L, Yang H, Zhan M . Research on influence of friction on setting position of preform billet in precision forging process of blade[J]. Chines Journal of Mechanical Engineering, 2003, 39(1): 97-100.

[9]黄湘龙, 易幼平, 李蓬川, 等. TC18钛合金模锻件锻造成形工艺仿真[J]. 锻压技术, 2012, 37(5): 7-11.

Huang X L, Yi Y P, Li P C, et al. Research on forging process for TC18 titanium alloy forging[J]. Forging & Stamping Technology, 2012, 37(5): 7-11.

[10]Zhang D W, Yang H, Sun Z C, et al. A new FE modeling method for isothermal local loading process of large-scale complex titanium alloy components based on deform-3D[A]. AIP Conference Proceedings 1252[C]. NewYork，2010.

[11]张大伟, 赵升吨, 朱骏, 等. 大型钛合金模锻件模锻成形过程建模仿真[J]. 重型机械, 2014, (5):10-14.

Zhang D W, Zhao S D, Zhu J, et al. Modeling and simulation of die forging process for large-scale titanium alloy forging[J]. Heavy Machinery, 2014, (5):10-14.

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