Transactions of Materials and Heat Treatment

Title：Research on the hot extrusion forming technology of super-pipe nozzles used in nuclear power station

Authors： Sun Liming Peng Xiankuan Guo Lei Xu Guangxin

Unit： Beijing Guodian Futong Science and Technology Development Co. Ltd.

KeyWords： super-pipe nozzle flanging prefabricated hole hot extrusion

ClassificationCode：TG376

year,vol(issue):pagenumber：2014,39(9):48-52

Abstract：

Based on the traditional flanging process of tee, the hot extrusion forming technology of the super-pipe nozzles used in nuclear power station was studied. The different extrusion process schemes were designed with respect to the diameter of the prefabricated hole and the punch structure of the super-pipe nozzles, and the best technological parameters were obtained through a lot of technological experiments. The experimental results show that the prefabricated hole diameter of the nozzles can be calculated according to the principle of constant volume; the thickness of nozzles is primarily determined by the gap between the punch and die, as the thickness of nozzles is about 92%~96% of the gap. The forming height of the nozzles can be estimated by theoretic calculation, with a deviation between plus or minus 10%.

Funds：

孙立明（1982-），男，硕士，工程师

Reference：

［1］薛源，刘金贵.核电站主蒸汽超级管道管嘴受力分析[J].广东电力， 2012， 25 （12）：37-39，43.Xue Y, Liu J G. Force analysis on main steam super pipe mouthpiece of nuclear power station[J]. Guangdong Electric Power,2012,25（12）: 37-39, 43.
［2］古丽，张建，褚亮.大口径三通管翻边成形工艺参数优化[J].锻压技术，2010，35(3)：71-75.Gu L, Zhang J, Chu L . Parameter optimization of large-diameter T-tube flanging process[J]. Forging & Stamping Technology, 2010, 35(3): 71-75.
［3］王刚，李萍，饶彦民.三通管热翻边工艺模拟及实验研究[J].合肥工业大学学报，2011，34(1)，43-46.Wang G, Li P, Rao Y M. Simulation and experimental study of hot flanging technique of three-limb tubes[J]. Journal of Hefei University of Technology, 2011, 34(1), 43-46.
［4］沈言锦.翻孔成形的结构设计研究[J].模具工程，2008，89(8)：70-71.Shen Y J. Design and research on the structure of hole-flanging forming[J]. Mould & Die Project, 2008, 89(8): 70-71.
［5］张朝阁，卢险峰，禇亮.翻孔预孔孔径的计算[J].模具工业，2004，1(275)：34-37.Zhang C G, Lu X F, Chu L. Calculation of the diameter of the pre-manufactured hole for flanging[J]. Die & Mould Industry, 2004, 30(1): 34-37.
［6］薛启翔.冲压模具设计制造难点与窍门[M].北京：机械工业出版社，2003.Xue Q X. Design and Skill of Stamping Mould[M]. Beijing: China Machine Press, 2003.
［7］刘丽敏，钟志平，谢谈，等.大口径三通成形冷却区数值模拟与实验研究[J].锻压技术，2009，34(2)：137-140.Liu L M, Zhong Z P, Xie T, et al. Numerical simulation and experimental study on forming process cooling area of large diameter tee[J]. Forging & Stamping Technology, 2009, 34(2): 137-140.
［8］许发樾.实用模具设计与制造手册[M].北京：机械工业出版社，2000.Xu F Y. Practical Design and Manufacture Manual of Mould[M]. Beijing: China Machine Press, 2000.
［9］成虹.冲压工艺与模具设计[M].北京：高等教育出版社，2004.Cheng H. Stamping Process and Mould Design[M]. Beijing: Higher Education Press, 2004.
［10］王建平，武欢欢，凤立娟，等.基于Deform分析与正交试验法的中厚板翻孔参数选择[J].锻压技术，2010，35(4)：143-145.Wang J P, Wu H H, Feng L J, et al. Research on parameters of hole flanging based on Deform and orthogonal experiment[J]. Forging & Stamping Technology, 2010, 35(4): 143-145.

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