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Acta Metall Sin  2012, Vol. 48 Issue (10): 1194-1200    DOI: 10.3724/SP.J.1037.2012.00339
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THE VOID CLOSE BEHAVIOR OF LARGE INGOTS DURING HOT FORGING
XU Bin, SUN Mingyue, LI Dianzhong
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
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Abstract  

All the parameters that may affect void closure behavior are judged using finite element method (FEM). The simulation results show that temperature, strain rate, friction coefficient, sample size and void size do not affect the void closure behavior. Height–diameter ratio of the sample and void position will affect the strain around the void and the void will be easier to close when the strain around it are higher. Of all the parameters, void shape is the most important one. Height–diameter ratio of the void is defined to describe the effect of void shape. The simulation results show that the larger height–diameter ratio of the void, the harder it is for the void to close. Based on these results and the sectioning results of a 100 t ingot, a new forging method, wide–anvil radial forging (WRF) is proposed. WRF method can concentrate the strain on the center of the ingot; meet the optimum height–diameter ratio condition of the void closure and heal shrinkage cavities effectively. Experiments on continuous casting billets prove the effectiveness and applicability of this method

Key words:  void closure      height–diameter ratio of void      wide–anvil radial forging (WRF) method     
Received:  08 June 2012     
ZTFLH:  TG316  
Fund: 

Supported by National Natural Science Foundation of China (No.51204157)

Corresponding Authors:  Mingyue Sun     E-mail:  mysun@imr.ac.cn

Cite this article: 

XU Bin SUN Mingyue LI Dianzhong. THE VOID CLOSE BEHAVIOR OF LARGE INGOTS DURING HOT FORGING. Acta Metall Sin, 2012, 48(10): 1194-1200.

URL: 

https://www.ams.org.cn/EN/10.3724/SP.J.1037.2012.00339     OR     https://www.ams.org.cn/EN/Y2012/V48/I10/1194

[1] Campbell J, translated by Li D Z, Li Y Y. Castings. 2nd Ed., Beijing: Science Press, 2011: 240

(Campbell J著, 李殿中, 李依依  译. 铸造原理. 第2版, 北京: 科学出版社, 2011: 240)

[2] Li S J, Sun M Y, Liu H W, Li D Z. Acta Metall Sin, 2011; 47: 946

(李世键, 孙明月, 刘宏伟, 李殿中. 金属学报, 2011; 47: 946)

[3] Park C Y, Yang D Y. J Mater Process Technol, 1996; 57: 129

[4] Park C Y, Yang D Y. J Mater Process Technol, 1997; 72: 32

[5] Ma Q X, Zhong Y X, Cao Q X. J Tsinghua Univ (Sci Technol), 1999; 39(11): 94

(马庆贤, 钟约先, 曹起骧. 清华大学学报(自然科学版), 1999; 39(11): 94)

[6] Li S J. PhD Thesis, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 2011

(李世键. 中国科学院金属研究所博士学位论文, 沈阳, 2011)

[7] Wang Z T, Liu Z, Ren M. Chin J Mech Eng, 1989; 25(3): 51

(王祖唐, 刘 庄, 任猛. 机械工程学报, 1989; 25(3): 51)

[8] Wang Z T, Liu Z, Ren M. Chin J Mech Eng, 1989; 25(4): 47

(王祖唐, 刘 庄, 任猛. 机械工程学报, 1989; 25(4): 47)

[9] Wang A, Thomson P F, Hodgson P D. J Mater Process Technol, 1996; 60: 95

[10] Kopp R, Ambaum E. Stahl Eisen, 1976; 96: 1004

[11] Kopp R, Stenzhorn P. Stahl Eisen, 1983; 103: 377

[12] Ono S, Minami K, Ochiai T, Iwadate T, Nakata S. Japan Soc Mech Eng, 1995; 61(585): 387

[13] Park C Y, Yang D Y. J Mater Process Technol, 1997; 67: 195

[14] Ren G S, Huang Z H, Bai Z B. Chin J Mech Eng, 1995; 31(2): 93

(任广升, 黄朝晖, 白志斌. 机械工程学报, 1995; 31(2): 93)

[15] Han J T, Zhao G, Cao Q X. Acta Metall Sin, 1996; 32: 723

(韩静涛, 赵钢, 曹起骧. 金属学报, 1996; 32: 723)

[16] Lee Y S, Lee S U, VanTyne C J, Joo B D, Moon Y H. J Mater Process Technol, 2011; 211: 1136

[17] Kakimoto H, Arikawa T, Takahashi Y, Tanaka T, Imaida Y. J Mater Process Technol, 2010; 210: 415

[18] Banaszek G, Stefanik A. J Mater Process Technol, 2006; 177: 238

[19] Zhang X X, Cui Z S, Chen W, Li Y. J Mater Process Technol, 2009; 209: 1950

[20] Kang D T, Ye G B. Materials and Heat Treatment of Large Forgings. Beijing: Longmen Bookstore, 1998: 73

(康大韬, 叶国斌. 大型锻件材料及热处理. 北京: 龙门书局, 1998: 73)

[21] Wang L G, Huang Y, Liu Z B. J Plast Eng, 2002; 9(2): 28

(王雷刚, 黄瑶, 刘助柏. 塑性工程学报, 2002; 9(2): 28)

[22] Chun M S, Van Tyne C J, Moon Y H. Steel Res Int, 2006; 77: 116

[23] Dudra S P, Im Y T. Int J Mach Tools Manufact, 1990; 30: 65

[24] Kim Y D, Cho J R, Bae W B. J Mater Process Technol, 2011; 211: 1005

[25] Cui Z S, Ren G S, Xu B Y, Xu C G, Liu G H. J Tsinghua Univ (Sci Technol), 2003; 43(2): 227

(崔振山, 任广升, 徐秉业, 徐春国, 刘桂华. 清华大学学报(自然科学版), 2003; 43(2): 227)

[26] Liu Z B, Ni L Y, Liang C, Liu G H, Deng D M. Chin Mech Eng, 2005; 16(1): 74

(刘助柏, 倪利勇, 梁晨, 刘国晖, 邓冬梅. 中国机械工程, 2005; 16(1): 74)

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