Fracture Splitting Properties of Steel C70S6 for Connecting Rod

Special Steel ›› 2011, Vol. 32 ›› Issue (5): 66-68.

Fracture Splitting Properties of Steel C70S6 for Connecting Rod

Liu Zhixiong¹ , Hui Weijun^2,3 , Liu Rongpei³

1. China National South Aviation Industry (Group) Co Ltd, Zhuzhou 412000；
2. National Engineering Research Center of Advanced Steel Technology, Central Iron and Steel Research Institute, Beijing 100081 ;
3. Kunming University of Science and Technology, Kunming 650093；

Received:2011-04-01 Online:2011-10-01 Published:2022-11-04
Contact: Hui Weijun

连杆用C70S6钢的胀断性能

刘智雄¹，惠卫军^2,3，刘荣佩³

1. 中国南方航空工业(集团)有限公司，株洲 412000；
2. 钢铁研究总院先进钢铁材料技术国家工程研究中心，北京 100081；
3. 昆明理工大学，昆明 650093；

通讯作者: 惠卫军
作者简介:刘智雄(1982-),男，硕士,2010年昆明理工大学毕业，焊接技术、材料组织和性能研究.
基金资助:
国家科技支撑计划资助项目(2007BAE51B03)

Abstract

Abstract: The fracture splitting properties of forged slab of microalloying steel F38MnVS (/% : 0.37C, 1.32Mn, 0.18Si, 0.008P, 0.060S, 0.12Cr, 0.12V) for traditional connecting rod and the fracture splitting properties of forged slab of microalloying steel C70S6 (/% : 0.72C, 0.57Mn, 0.32Si, 0.020P, 0.060S, 0.17Cr, 0.03 V) for fracture splitting connecting rod have been compared and studied. Results indicate that the fracture splitting properties of steel C70S6 are obviously better than that of steel F38MnVS. The main structure of steel C70S6 is lamellar pearlite with a little ferrite, and the splitting section is mainly brittle fracture to meet the requirement of fracture splitting technology.

Key words: Microalloying Steel C70S6, Structure, Fracture Splitting Properties, Brittle Fraciure

摘要： 对比分析了传统连杆用非调质钢F38MnVS(/%:0.37C、1.32Mn、0.18Si、0.008P、0.060S、0.12Cr、0.12V)锻坯的胀断性能和胀断连杆用非调质钢C70S6(/%:0.72C、0.57Mn、0.32Si、0.020P、0.060S、0.17Cr、0.03V)锻坯的胀断性能。结果表明,C70S6钢的胀断性能明显优于F38MnVS钢。C70S6钢的组织以片层状珠光体为主,铁素体的含量极低,胀断面以脆性断裂为主,达到胀断技术的要求。

关键词: 非调质钢C70S6, 组织, 胀断性能, 脆性断裂

Liu Zhixiong , Hui Weijun , Liu Rongpei. Fracture Splitting Properties of Steel C70S6 for Connecting Rod[J]. Special Steel, 2011, 32(5): 66-68.

刘智雄, 惠卫军, 刘荣佩. 连杆用C70S6钢的胀断性能[J]. 特殊钢, 2011, 32(5): 66-68.

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