Effect of Casting Electromagnetic Stirring and Light Reduction on Metallurgical Quality of Gas Cylinder Steel 34CrMo4

Special Steel ›› 2017, Vol. 38 ›› Issue (5): 40-43.

Previous Articles Next Articles

Effect of Casting Electromagnetic Stirring and Light Reduction on Metallurgical Quality of Gas Cylinder Steel 34CrMo4

Lu Bingjun¹ , Qi Feng¹ , Shen Wanlin² , Liu Jun³

1. Products Research Institute, Benxi Steel Plates Co Ltd, Benxi 117000；
2. Jiaozuo Jinxin Hengtuo Advanced Materials Co Ltd, Jiaozuo 454450；
3. Steel Plant, Benxi Steel Plates Co Ltd, Benxi 117000;

Received:2017-04-27 Online:2017-10-01 Published:2022-07-15

连铸电磁搅拌和轻压下对气瓶钢34CrMo4冶金质量的影响

卢秉军¹，齐峰¹，沈万林²，刘军³

1. 本钢板材股份有限公司产品研究院，本溪 117000；
2. 焦作金鑫恒拓新材料股份有限公司，焦作 454450；
3. 本钢板材股份有限公司炼钢厂，本溪 117000；

作者简介:卢秉军(1972-),男，教授级高级工程师,1993年辽宁工学院毕业，特殊钢产品研究与开发。

Abstract

Abstract: The production flowsheet for gas cylinder steel 34CrMo4 is hot-metal pretreatment- 180 t BOF- LF- RH- 350 mm x 470 mm blooms casting. The pilot production is carried out on 4-strands casting respectively by using mold electromagnetic stirring ( M-EMS, 480 A, 2 Hz) ； M-EMS + solidification end electromagnetic stirring ( E-EMS, 320 A, 6 Hz) ； M-EMS + light reduction ( LR, 3 mm-4 mm-3 min) and M-EMS + E-EMS + LR process, it is obtained that the process with M-EMS (480 A, 2 Hz) + E-EMS (320 A, 6 Hz) + 3-4-3(mm) light reduction is available to improve the internal metallurgical quality of casting bloom. 9 heats commercial production results show that the tensile strength of gas cylinder steel 34CrMo4 steelmaking by the flowsheet is up to 1070 〜1159 MPa and oxygen content in steel is ≤0.0020% , and by using M-EMS + E-EMS + LR casting process the steel has high density and the rating of center porosity of bloom is ≤1.0.

Key words: Gas Cylinder Steel 34CrMo4, 180 t BOF-LF-RH-CC Flowsheet, Electromagnetic Stirring, Light Reduction, Centrer Porosity

摘要： 气瓶钢34CrMo4的生产工艺流程为铁水预处理-180 t BOF-LF-RH-350 mm×470 mm坯连铸。对4流连铸分别采用结晶器电磁搅拌（M-EMS,480 A,2 Hz）;M-EMS+凝固末端电流搅拌（E-EMS,320 A,6 Hz）;M-EMS+轻压下（LR,3 mm-4 mm-3 mm）以及M-EMS+E-EMS+LR进行工业试验,得出M-EMS（480 A,2 Hz）+E-EMS（320A,6 Hz）+3-4-3（mm）轻压下工艺,有效提升连铸坯内部冶金质量。9炉生产结果表明,该流程生产的气瓶钢34CrMo4的抗拉强度达1070~1159 MPa,钢中氧含量≤0.0020%,采用M-EMS+E-EMS+LR连铸工艺时,该钢具有高致密度,铸坯中心疏松级别≤1.0。

关键词: 气瓶钢34CrMo4, 180t BOF-LF-RH-CC流程, 电磁搅拌, 轻压下, 中心疏松

Lu Bingjun , Qi Feng , Shen Wanlin , Liu Jun. Effect of Casting Electromagnetic Stirring and Light Reduction on Metallurgical Quality of Gas Cylinder Steel 34CrMo4[J]. Special Steel, 2017, 38(5): 40-43.

卢秉军, 齐峰, 沈万林, 刘军. 连铸电磁搅拌和轻压下对气瓶钢34CrMo4冶金质量的影响[J]. 特殊钢, 2017, 38(5): 40-43.

[1]	Sun Jian, Li Jie, Zhang Caidong, Li Jie, Zhao Haitao, Ren Gang. Process Optimization on Improving Center Segregation of Spring Steel Billet and Properties of Wire Rod [J]. Special Steel, 2024, 45(2): 89-90.
[2]	Liu　Qilong, Deng　Yong, Li　Huagang, Wei　Rujun, Cao　Chenghu, Zhang　Min. Numerical simulation and Process Practice of Mold Electromagnetic Stirring for IF Steel Slab [J]. Special Steel, 2023, 44(6): 83-88.
[3]	Zhou　Weiji, Yao　Yudong, Liu　Jiawei, Yue　Feng, Shi　Jiankai. Effect of Crystallizer Electromagnetic Stirring on Solidification Organization and Segregation of Round Billets Q355NE Φ800 mm [J]. Special Steel, 2023, 44(3): 64-68.
[4]	Zhang Hongcai , Lin Peng , Zhai Wanli , Xu Zhengzhou , Mou Zefeng , Xu Guangle. Analysis and Process Improvement of Center Crack of 50CrMo Steel Φ600 mm Continuous Casting Round Bloom [J]. Special Steel, 2022, 43(5): 43-46.
[5]	He Hongjie, Guo Jian, Ye Fanxin, Zhao Yanling , Zhang Yunpeng. Process Practice to Improve Carbon Segregation of Casting Bloom of Spring Steel 55SiCrA-l [J]. Special Steel, 2019, 40(3): 28-31.
[6]	Liu Yong , Gao Peng. Process Practice on Improvement of 300 mm x 360 mm Casting Bloom Macro-Segregation of 8620 Series Gear Steel [J]. Special Steel, 2018, 39(6): 43-46.
[7]	Lü Da, Zhang Yunfei, Zhang Fuli, Han Yanguang, Ren Shuai, Cui Yi , Bai Lijuan. Effect of Electromagnetic Stirring on Solidification Structure of 1 t Electroslag Remelting Ingot of Alloy GH4169 [J]. Special Steel, 2018, 39(5): 44-47.
[8]	Sun Tao , Yue Feng , Wu Huajie , Guo Chun , Ma Zhongcun , Li Ying , Guo Xin. Effect of Mold Electromagnetic Stirring Current on Internal Quality of Φ650 mm Heavy Round Bloom [J]. Special Steel, 2015, 36(5): 43-46.
[9]	Wang Tao, Chen Weiqing , Wang Hongbing, Wang Jianzhong, Zhang Zhiqiang. Effect of Concasting Parameter and F-EMS on Center Carbon Segregation of 82B Steel Billet [J]. Special Steel, 2013, 34(1): 49-51.
[10]	Su Ghunyang, Pan Mingxu, Zhou Kaiming, Wang Pin, Liu Gaoli, Fei Sanlin , Rao Jinyuan. Optimization on Parameters of Mold Electromagnetic Stirring for 350 mm x 470 mm Bloom Casting [J]. Special Steel, 2012, 33(4): 42-44.
[11]	Li Yi , Ni Hongwei , Zhang Hua , Luo Ronghua. Numerical Simulation of Mold Electromagnetic Stirring for 380 mm x 280 mm Bloom Casting [J]. Special Steel, 2012, 33(2): 10-13.
[12]	Cao Hongfu. Effect of Multiple Electromagnetic Stirring on Carbon Segregation in Concasting Low Carbon Steel [J]. Special Steel, 2010, 31(2): 38-39.
[13]	Cui Fenglan , Cui Xiaochao , Liu Kai , Tian Han. Effect of Swirling Flow Nozzle on Liquid Flow Field in Concasting Mold for Round Billet [J]. Special Steel, 2009, 30(4): 36-38.
[14]	Chen Yong , Zhu Miaoyong , Ren Bingzhi. Numerical Simulation for Electromagnetic Stirring of Mold for 360 mm x 450 mm Bloom Concasting [J]. Special Steel, 2008, 29(5): 4-6.
[15]	Guo Shangxing, Wang Jianjun, Zhou Li, Li Weiguo , Shi Xiaofang, Sun Wei , Wang Kaizhong. A Study on Distribution Characteristics of Electromagnetic Field in Concasting Mould for Round Bloom [J]. Special Steel, 2005, 26(6): 5-7.

Effect of Casting Electromagnetic Stirring and Light Reduction on Metallurgical Quality of Gas Cylinder Steel 34CrMo4

连铸电磁搅拌和轻压下对气瓶钢34CrMo4冶金质量的影响

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments