Formation and Control of CaS Inclusion in Gear Steel 20MnCr5

被引：2
|
作者：
Xu, Jie [1 ]
Fu, Jianxun [1 ]
Wu, Yanxin [1 ]
Li, Xu [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv Ferromet, State Key Lab Adv Special Steel, Shanghai, Peoples R China
来源：
TMS 2017 146TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS | 2017年
基金：
中国国家自然科学基金;
关键词：
20MnCr5; Calcium treatment; Thermodynamics; Nozzle clogging;
D O I：
10.1007/978-3-319-51493-2_40
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The modification of (CaO)m(Al2O3)n inclusion and the fact of CaS inclusion formation in gear steel 20MnCr5 after calcium treatment have been studied by thermodynamic equilibrium calculation. Based on the thermodynamic equilibrium, when the liquid steel containing 0.035% [Al], the mass fraction of sulfur is lower than 0.00628% and the ratio of w(Ca)/w(Al) is higher than 0.483, the lower melting point 12(CaO) center dot 7(Al2O3) inclusion will form in the molten steel. Calculated results show that with calcium treatment of liquid steel the stable CaS forms easily and the aluminum deoxidizing product Al2O3 is easily modified to low-melting calcium aluminate 12(CaO) center dot 7(Al2O3). In order to completely modify the Al2O3 to low-melting calcium aluminate (CaO) center dot (Al2O3) and 12(CaO) center dot 7(Al2O3), the calcium treatment of liquid steel should carry out in conditions of low [S] and >= 1600 C-omicron, and the sulfur wire feeding operation after soft argon stirring in refining process, it is available to obviously decrease the occurrence of nozzle blocking.
引用
收藏
页码：425 / 433
页数：9
相关论文
共 50 条
  • [31] Effect of Al Element on Retained Austenite, Residual Compressive Stress, and Contact Fatigue Life of Carburized and Quenched 20MnCr5 Steel Gear
    Chen, Yong
    Luo, Li
    Zhang, Yuquan
    Zhou, Xingyun
    Zeng, Deshan
    Yu, Fucheng
    MATERIALS, 2024, 17 (23)
  • [32] Modelling of phase transformations and transformation plasticity of a continuous casted steel 20MnCr5 incorporating segregations
    Hunkel, M.
    MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, 2012, 43 (1-2) : 150 - 157
  • [33] Multi-objective optimization of wire electrical discharge machining of 20MnCr5 alloy steel
    Kumar, Naresh
    Goyal, Khushdeep
    WORLD JOURNAL OF ENGINEERING, 2020, 17 (03) : 325 - 333
  • [34] Fatigue life improvement on 20MnCr5 steel through surface modification for auto transmission application
    Srinivasan, Ramesh
    Natarajan, S.
    Sivakumar, V. J.
    ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, 2019, 19 (02) : 360 - 374
  • [35] Stress-strain behaviour of the case hardening steel 20MnCr5 regarding different microstructures
    Dalgic, M.
    Irretier, A.
    Zoch, H. -W.
    MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, 2009, 40 (5-6) : 448 - 453
  • [36] Comparison of Mechanical Properties and Resistance to Creep of 20MnCr5 Steel and X10CrAlSi25 Steel
    Brnic, Josip
    Brcic, Marino
    25TH DAAAM INTERNATIONAL SYMPOSIUM ON INTELLIGENT MANUFACTURING AND AUTOMATION, 2014, 2015, 100 : 84 - 89
  • [37] Sustainability and performance assessment of gear hobbing under different lubrication environments for manufacturing of 20MnCr5 spur gears
    Kharka, Vishal
    Jain, Neelesh Kumar
    Gupta, Kapil
    SUSTAINABLE MATERIALS AND TECHNOLOGIES, 2022, 31
  • [38] Simulation of the distortion of 20MnCr5 parts after asymmetrical carburization
    Acht, C
    Clausen, B
    Hoffmann, F
    Zoch, HW
    MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, 2006, 37 (01) : 152 - 156
  • [39] Influence of process parameters on short fatigue crack growth on carburised case of DIN 20MnCr5 steel
    Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil
    Int. Heat Treat. Surf. Eng., 2009, 3 (96-104):
  • [40] Distortion measurements of cylindrical 20MnCr5 discs during quenching in oil
    Stoebener, D.
    Acht, C.
    Zoch, H. -W.
    Goch, G.
    HTM-JOURNAL OF HEAT TREATMENT AND MATERIALS, 2007, 62 (04): : 157 - 162
12345