Transactions of Materials and Heat Treatment

Title：Study on failure mechanism of H13 steel hot-forging dies for automobile

Authors： WANG Meng1 2 LIU Zong-de1 BAO Zhi-jian1(1.Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education North China Electric Power University Beijing 102206 China 2.Department of Mechanical Engineering North China E

Unit：

KeyWords： hot-forging dies failure analysis H13 steel metallographic examination

ClassificationCode：TG315.2

year,vol(issue):pagenumber：2008,33(4):83-86

Abstract：

The failure mechanism was analyzed on automobile hot-forging dies by means of EDS,micro-hardness and metallographic examination.The results show that surface oxidation and dispersing of alloying elements in surface layer lead to the reduction of hardness,wear resistance and hot strength of the steel,which cause the initial surface cracks.Continuous propagation of the cracks results in the final failure of the dies.

Funds：

教育部长江学者与创新团队计划(IRT0720);; 北京市教委科技成果转化与产业化项目资助

Reference：

[1]曾珊琪,丁毅.模具寿命与失效[M].北京:化学工业出版社,2005.
[2]宝志坚.汽车热锻模具的失效机理及延寿技术[D].北京:华北电力大学,2006.
[3]樊东黎,王广生.热处理手册[M].北京:机械工业出版社,2001.
[4]徐滨士.神奇的表面工程[M].北京:清华大学出版社,2000.
[5]Johnson P K,Arana M,Ostolaza M,et al.Crack initiationin a coated and uncoated nickel-base superalloy under TMFconditions[J].Journal of Engineering for Gas Turbines andPower,1998,10:791-795.
[6]刘宗德,安江英,杨昆,等.电爆炸高速喷涂新技术研究[J].爆炸与冲击,2001,(1):17-20.
[7]王彦可,杨永顺,候明,等.轴承保持架温挤压模具失效分析[J].锻压技术,2006,31(1):61-63.
[8]石钟良,蔡莲淑,莫东强,等.气门热精锻模具的正常与异常失效[J].锻压技术,2001,(5):58-60.

Service：

【This site has not yet opened Download Service】【Add Favorite】