精炼渣成分对42CrMo钢洁净度的影响

doi:10.13228/j.boyuan.issn1005-4006.20220043

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (2832 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to study the effect of different refining slag on the cleanliness and the number and size of inclusions in 42CrMo steel,the influence of a quaternary slag system of CaO-Al₂O₃-SiO₂-MgO on cleanliness and inclusion control in 42CrMo steel was investigated using a slag-steel equilibrium test and FactSage thermodynamics in this research. When the initial slag basicity (the mass ratio of CaO/SiO₂) and the calcium to aluminum ratio (the mass ratio of CaO/Al₂O₃) are 5 and 1.8, respectively, the T.[O] content in the steel can be reduced to 7.5×10^-6,at the same time, the inclusion size is well controlled, and it is less than 8 μm, according to the findings. The refining effect of 42CrMo steel is the best under this slag system condition. The study also showed that the inclusion composition in the steel was greatly affected by the slag system, especially the Al₂O₃ content of the inclusions in the steel was greatly affected by the activity of Al₂O₃ in the slag, the refining slag system with high Al₂O₃ activity has a weak ability to remove inclusions Al₂O₃, resulting in a high content of inclusions Al₂O₃ in the steel under this refining slag system.

Key words： 42CrMo steel slag-steel equilibrium reaction CaO-Al₂O₃-SiO₂-MgO refining slag activity non-metallic inclusion

Received: 29 March 2022

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LIU Wei
	WU Hua-jie
	LI xue
	SUN Yan-hui
	LI Ming

Cite this article:

LIU Wei,WU Hua-jie,LI xue等. Effect of refining slag composition on cleanliness of 42CrMo steel[J]. CONTINUOUS CASTING, 2022, 41(5): 43-49.

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220043 OR http://www.chinamet.cn/Jweb_lz/EN/Y2022/V41/I5/43

[1]	席志伟,罗红梅,孙国栋. 预备热处理对A-F区亚温淬火-回火的42CrMo钢组织和性能的影响[J].特殊钢,2019,40(4):43.
[2]	张青,曹培. 回火温度对42CrMo钢棒感应调质组织及力学性能的影响[J].金属热处理,2021,46(11):182.
[3]	蒲学坤.42CrMo合金结构钢大方坯连铸工艺研究与应用[J].中国冶金,2007,17(9):11.
[4]	彭则,李萌蘖,卜恒勇,等.42CrMo钢加热过程中的奥氏体晶粒尺寸演变[J].金属热处理,2021,46(5):25.
[5]	张文,朱百智,黄振建,等.淬火介质对42CrMo钢棒淬火组织及硬度影响的数值模拟及试验验证[J].金属热处理,2020,45(1):56.
[6]	张立峰. 精炼渣成分对钢中非金属夹杂物的影响[C]//第十届中国金属学会青年学术年会暨第四届辽宁青年科学家论坛会议指南.辽宁鞍山:中国金属学会,2020:45.
[7]	黄永生,孙光涛,顾超,等. 铝脱氧轴承钢GCr15精炼渣最优成分的分析与实践[J].中国冶金,2017,27(12):44.
[8]	李牧明,于会香,潘明,等. 精炼渣对高锰钢中非金属夹杂物的影响[J].钢铁,2019,54(6):37.
[9]	赵烁,曾建华,古隆建,等. 精炼渣控制82B帘线钢中夹杂物形态的实验室研究[J].中国冶金,2010,20(6):25.
[10]	阮小江,姜周华,龚伟,等.精炼渣对轴承钢中氧含量和夹杂物的影响[J].特殊钢,2008,29(5):1.
[11]	徐迎铁,陈兆平,杨宝权. 轴承钢Ds类大颗粒夹杂物研究[J].炼钢,2016,32(4):49.
[12]	林伟,李海波,王新华,等. CaO-Al2O3渣系对20CrMoH齿轮钢中总氧和硫的影响[J].特殊钢,2008,29(2):28.
[13]	李海波,李宏,王新华,等. 20CrMoH钢精炼过程中T[O]和夹杂物的研究[J].钢铁,2007,42(10):43.
[14]	周俐,梁健,王向红,等. 不同碱度低氧化铝精炼渣对弹簧钢夹杂物成分的影响[J].钢铁研究学报,2017,29(8):626.
[15]	肖微,包燕平,王敏,等. 非铝脱氧GCr15轴承钢的夹杂物演变和控制[J].钢铁,2021,56(1):37.
[16]	叶明峰,吴光亮. 优化精炼渣去除50Cr5MoV钢中Al2O3夹杂物的实验室研究[J].钢铁研究,2017,45(2):19.
[17]	印传磊,翟万里,蒋栋初,等. 42CrMo钢大尺寸夹杂物的来源与控制[J].中国冶金,2021,31(1):36.
[18]	王宝,李任春,刘俊山,等. DC06 IF钢精炼渣成分优化及钢-渣中氧的控制[J].钢铁研究学报,2021,33(4):293.
[19]	陈兴润,韩少伟,郭靖,等. 304不锈钢不同精炼渣碱度下夹杂物的演变[J].钢铁,2019,54(11):40.
[20]	葛金朋,李晶,史成斌,等. 高碱度精炼渣对GCr15轴承钢洁净度的影响[J].钢铁,2016,51(11):30.
[21]	龙鹄, 成国光,丘文生,等. 轴承钢中大尺寸夹杂物的特征、来源及改进工艺[J]. 中国冶金,2020,30(9): 53.
[22]	王强, 朱航宇,孙剑,等. SWRCH45K冷镦钢非金属夹杂物生成及演变行为[J]. 中国冶金,2020,30(11): 41.
[23]	吴辉强,林路,顾超. 齿轮钢(8620H)精炼渣优化及工业试验[J]. 中国冶金,2016,26(8): 32.
[24]	李西德,邓深,杨跃标,等. SWRH82B硬线钢CaO-Al2O3-SiO2系夹杂物塑性化控制的生产实践[J]. 中国冶金,2018,28(2): 61.
[25]	MIN J,LI K I. Cleanliness and control of inclusions in Al-deoxidized bearing steel refind by basic slags during LF-VD-Ar bubbling[J]. ISIJ International,2022,62(1):124.
[26]	Hino M,lto K. Thermodynamic data for steelmaking[M].Senda. Japan:Tohoku University Press,2010: 259.