Transactions of Materials and Heat Treatment

Title：Precision die forging technology using high power screw press for DK20 connecting rod

Authors： ZHAN Hui

Unit： CSR Ziyang Locomotive Co. Ltd.

KeyWords： DK20 connecting rod roll forging precision die forging high power screw press

ClassificationCode：TG316

year,vol(issue):pagenumber：2013,38(4):1-5

Abstract：

Focusing on the hammer die forging technology deficiency of DK20 connecting rod, the technology of precision die forging on the high power screw press production line was put forward, the design issues of each tooling process were described, and the effective solutions for the problems during the production were resolved. Compared with the hammer die forging, a medium frequency induction heating, the triple-pass roll forging blanks were adopted,and the process of trimming first by press and then punching compound die and calibration was applied,which avoided three processes of free forging billets, carbon tempering and machining holes, achieved residual heat quenching and tempering for forging. The forgings manufacturing costs were reduced by more than 20%, the production cycle was shortened by 50%.

Funds：

詹辉（1967-），男，学士，高级工程师

Reference：

［1］王云飞，夏占雪，胡志高，等.曲轴先进锻造技术的研究与应用[J]. 锻压技术, 2012,37(1):1-5. Wang Y F, Xia Z X,Hu Z G，et al. Study and application of advanced crankshaft forging technology[J]. Forging & Stamping Technology, 2012，37(1):1-5.
［2］王仲仁.锻压手册：第1卷锻造[M].北京:机械工业出版社,1993. Wang Z R. Handbook：First Volume Forging [M]. Beijing: Mechanical Industry Press, 1993.
［3］俞永祥,李胜川,赵荣祥.现代锻造与电感应加热炉——智能化电感应加热成套系统[J]. 锻压技术, 2000, 25(6):37-39. Yu Y X, Li S C，Zhao R X. Modern technology of forge and the electrical induction heating furnace-intelligent electrical induction heating system[J]. Forging & Stamping Technology, 2000，25(6):37-39.
［4］崔世强，孙士宝. 歪头连杆制坯辊锻模具设计[J]. 锻压技术, 1999，24(1)：49-52. Cui S Q, Sun S B. Design of preforming roll forging die for conrod with askew-head[J]. Forging & Stamping Technology, 1999，24(1):49-52.
［5］蒋鹏,胡福荣,曹飞，等.柴油机连杆采用自动辊锻制坯工艺的技术经济效果[J].机械工人:热加工， 2003,(9):75-76. Jiang P, Hu F R, Cao F，et al. The diesel engine connecting rod adopts automatic roll forging process of technical economy effect[J].Machinist Metal Forming:Heat Treatment, 2003,(9):75-76.
［6］邬玉昌，施四妹，琚杰，等.连杆锻件节料与制坯辊锻模设计优化[J].锻压技术, 2009 ,34(5):19-22. Wu Y C，Shi S M，Ju J，et al. Material economy and design optimization of roll forging blanking die for connecting rod[J]. Forging & Stamping Technology, 2009，34(5):19-22.
［7］邬玉昌. 制坯辊锻模自动设计系统的开发[J].锻压技术, 2006 ,31(2):103-106. Wu Y C. Development of the automatic design system for the roll forging blanking die[J]. Forging & Stamping Technology, 2006，31(2):103-106.
［8］魏科，王高潮，李宁，等. UG二次开发在辊锻模具设计中的应用[J].锻压技术, 2011 ,36(3):135-139. Wei K, Wang G C，Li N，et al. Roll forging die design based on UG secondary development[J]. Forging & Stamping Technology, 2011，36(3):135-139.
［9］张玉英，陈荣彪.柴油机连杆体毛坯的辊锻工艺及模具设计[J].锻压装备与制造技术，2009，（3）：67-69. Zhang Y Y , Chen R B. Roll-forging process and die design of connecting rod of a diesel engine[J]. China Metalforming Equipment & Manufacturing Technology, 2009, (3): 67-69.
［10］谭毅华,夏巨谌.基于实体造型的长轴类锻件计算毛坯的自动实现[J].锻压技术,2000,25(3): 9-11. Tan Y H，Xia J C. Automatic implementation of calculating blank of long-axis forgings based on solid modeling[J]. Forging & Stamping Technology, 2000，25(3):9-11.

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