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38MnVS4微合金非调质钢涨断连杆控锻控冷工艺
英文标题:Controlled forging and cooling process of expansion broken connecting rod for 38MnVS4 microalloy non-quenched and tempered steel
作者:冯宇阳 周蕾 刘磊 刘凯旋 赵秀明 毛向阳 
单位:南京工程学院 江苏省先进结构材料与应用技术重点实验室 南京钢铁股份有限公司 
关键词:控锻控冷技术 感应加热 冷却方式 非调质钢 发动机 连杆 晶粒细化 
分类号:TG316
出版年,卷(期):页码:2020,45(12):1-6
摘要:

采用4种不同的控锻控冷工艺,利用热模锻压力机对38MnVS4微合金非调质钢涨断连杆进行锻造成形。当感应加热温度为1250~1280 ℃时,辊锻后采用空冷和吹风两种方式进行冷却;当感应加热温度为1200~1230 ℃和1170~1200 ℃时,辊锻后采用空冷进行冷却。研究不同控锻控冷工艺对38MnVS4微合金非调质钢涨断连杆的晶粒度和力学性能的影响。结果表明:38MnVS4微合金非调质钢涨断连杆经辊锻后进行吹风冷却,其杆部晶粒度由辊锻后空冷的10级提高至11级,同时,其屈服强度提升了25~30 MPa,抗拉强度提升了20~60 MPa;连杆锻造时的感应加热温度从1250~1280 ℃降低至1170~1200 小时,虽然可以细化杆部晶粒度,但其抗拉强度会下降;采用相同锻造工艺获得的连杆,其杆部晶粒度比大头部位的晶粒度小2~3级。

The expansion broken connecting rod of 38MnVS4 microalloy non-quenched and tempered steel was forged by the hot die forging press with four different controlled forging and cooling processes, and the influences of different controlled forging and cooling processes on its grain sizes and mechanical properties were studied under the induction heating temperature of 1250-1280 ℃and air cooling and blast cooling after roll forging,as well as induction heating temperature of 1200-1230 ℃ and 1170-1200 ℃ and air cooling after roll forging. The results show that comparied with the air cooling after roll forging, when the expansion broken connecting rod of 38MnVS4 microalloy non-quenched and tempered steel is cooled by air after roll forging, the grain size of rod is increased from 10 to 11 grade. At the same time, the yield strength is increased by 25-30 MPa, and the tensile strength is increased by 20-60 MPa. Furthermore, the induction heating temperature of connecting rod during forging decreases from 1250-1280 ℃ to 1170-1200 ℃, although the grain of connecting rod is refined, but its tensile strength decreases. And for the connecting rod produced by the same forging process, the grain size of rod part is 2-3 grade smaller than that of large end part.

基金项目:
2019年江苏省研究生科研与实践创新计划(SJCX19_0494,SJCX19_0492,SJCX19_0511)
作者简介:
冯宇阳(1992-),男,硕士研究生 E-mail:fengyuyng00112@163.com 通讯作者:赵秀明(1962-),男,学士,教授 E-mail:13952096708@163.com
参考文献:


[1]陈思联, 惠卫军, 王连海, 等. 节能低成本高品质非调质钢的研发
[J]. 钢铁, 2014, 49(6):1-7.


Chen S L,Hui W J,Wang L H,et al. Research and development of energysaving high performance microalloyed forging steels
[J]. Iron and Steel,2014, 49(6):1-7.



[2]山其新. 汽车发动机连杆有限元分析与改进设计
[D]. 成都:电子科技大学, 2017.


Shan Q X. Design and Implementation of Material List Management System Based on Solid Edge
[D]. Chengdu:University of Electronic Science and Technology of China,2017.



[3]何沂桂, 满廷慧, 谭利, 等. 锻造工艺对铌-钒微合金非调质钢显微组织的影响
[J]. 机械工程材料, 2015, 39(1): 29-31,38.


He Y G, Man T H, Tan L, et al. Effect of forging process on NbV microalloyed nonquenched and tempered steels
[J]. Materials for Mechanical Enaineerina,2015, 39(1): 29-31,38.



[4]张浩, 高阳, 聂忠言, 等. 38MnVS4非调质钢在汽车涨断连杆上的应用
[J]. 汽车工艺与材料, 2017,(11):63-66.


Zhang H,Gao Y,Nie Z Y,et al. Application of 38MnVS4 nonquenched and tempered steel in automobile connecting rod
[J]. Automobile Technology & Material, 2017,(11):63-66.



[5]王亚子, 王晓东. 第二相颗粒对多晶材料晶粒粗化的影响
[J]. 铸造技术, 2014, 35(9): 1968-1970.


Wang Y Z, Wang X D. Effect of second phase particles on grain coarsening of polycrystalline material
[J]. Foundry Technology, 2014, 35(9): 1968-1970.



[6]Li T, Zhan Z, Pan L, et al. Nb effects on the dynamic recrystallization behavior and mechanical properties of V/Ti alloyed nonquenching and tempering steel
[J]. Hsla Steels Microalloying & Offshore Engineering Steels, 2013, 42(9):1767-1772.



[7]Rothleutner L M,Cryderman R, Chester V. Influence of temperature and holding time on the interaction of V, Al, and N in microalloyed forging steels
[J]. Metallurgical and Materials Transactions, 2014, 45(10):4594-4609.



[8]Opiela M. Effect of thermomechanical processing on the microstructure and mechanical properties of NbTiV microalloyed steel
[J]. Journal of Materials Engineering and Performance, 2014, 23(9): 3379-3388.



[9]李晓辉. 中碳非调质连杆胀断缺陷与Nb微合金化研究
[D]. 西宁:青海大学, 2018.


Li X H. The Splitting Fracture Defects and Nbmicroalloyed of AirCooled Medium Carbon Forging Steel Connecting Rod
[D]. Xining:Qinghai University, 2018.



[10]朱帅帅, 王章忠, 毛向阳, 等. 铁素体-珠光体型非调质钢强韧化技术研究进展
[J]. 材料导报, 2016, 30(9): 122-126.


Zhu S S, Wang Z Z, Mao X Y, et al. A review about strengtheningtoughening technologies for ferritepearlite nonquenched and tempered steels
[J]. Materials Reports, 2016, 30(9): 122-126.



[11]何沂桂. 铁素体珠光体型微合金非调质钢组织调控技术研究
[D]. 昆明:昆明理工大学, 2014.


He Y G. Research on Microstructure Control Technology of FerritePearlite Microalloyed Nonquenched and Tempered Steel
[D]. Kunming:Kunming University of Science and Technology, 2014.



[12]Gu S, Zhang L, Chi Z, et al. Modeling the effects of processing parameters on dynamic recrystallization behavior of deformed 38MnVS6 steel
[J]. Journal of Materials Engineering & Performance, 2015, 24(5):1790-1798.



[13]Davood Nakhaie, Pooya Hosseini Benhangi, Fateh Fazeli, et al. Controlled forging of a Nb containing microalloyed steel for automotive applications
[J]. Metallurgical and Materials Transactions, 2012, 43(13):5209-5217.



[14]《锻件质量分析》编写组. 锻件质量分析
[M]. 北京: 机械工业出版社, 1983.


Compilation Group of Forging Quality Analysis. Forging Quality Analysis
[M]. Beijing:China Machine Press, 1983.



[15]GB/T 6394—2017, 金属平均晶粒度测定方法
[S].


GB/T 6394—2017, Determination of estimating the average grain size of metal
[S].



[16]GB/T 2281—2010, 金属材料拉伸试验第1部分:室温试验方法
[S].


GB/T 2281—2010, Metallic materials—Tensile testing—Part 1: Method of test at room temperature
[S].



[17]吕炎. 锻压成形理论与工艺
[M]. 北京: 机械工业出版社, 1991.


Lyu Y. Forging Theory and Technology
[M]. Beijing:China Machine Press, 1991.



[18]雍岐龙. 钢铁材料中的第二相
[M]. 北京: 冶金工业出版社, 2006.


Yong Q L. Secondary Phases in Steels
[M]. Beijing:Metallurgical Industry Press, 2006.



[19]钱伟涛. 细晶强化改善金属锰微观组织及力学性能研究
[D]. 昆明: 昆明理工大学, 2017.


Qian W T. Study on Refinement Strengthening to Improve the Microstructure and Mechanical Properties of Metal Manganese
[D]. Kunming: Kunming University of Science and Technology, 2017.



[20]吕炎. 塑性成形件质量控制理论与技术
[M]. 北京: 国防工业出版社, 2013.


Lyu Y. Theory and Technology of Quality Control for Plastically Formed Parts
[M]. Beijing: National Defense Industry Press, 2013.

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