应用PMO提高连铸坯生产拉速及成分均匀性

doi:10.13228/j.boyuan.issn1005-4006.20200017

Abstract
Figure/Table
References
Related Citation (7)

Download: PDF (2419 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to achieve the goal of increasing the electric furnace plant production efficiency, the application potential of pulsed magneto-oscillation (PMO) in improving casting speed was studied. The results show that the optimization of PMO processing parameters can meet the requirements of increasing the production speed, and can improve the central segregation and macroscopic segregation of the billet. When the casting speed is raised to 1.05 m/min, making the pulse frequency being 1.16K_f Hz and the peak voltage being 1.00K_iV (K_f and K_i are the discharge frequency and the voltage peak, respectively),the cross section carbon segregation index can be controlled in the range of 1±0.05;When the casting speed is raised to 1.15 m/min, making the pulse frequency being 1.28K_f Hz and the peak voltage being 1.00K_iV,the cross section carbon segregation index can be controlled in the range of 1±0.07.The experiment prove that the quality of continuous casting billet can be improved by ensuring the pulse energy applied to molten steel per unit time under the condition of high drawing speed.

Key words： pulsed magneto-oscillation(PMO) continuous casting speed homogenization pulse energy pulse frequency

Received: 16 March 2020

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Hui-cheng
	LIU Hai-ning
	DENG Xiang-yang
	XU Jia-lu
	ZHU Fu-qiang
	WANG Ying

Cite this article:

LI Hui-cheng,LIU Hai-ning,DENG Xiang-yang等. Improvement of casting speed and composition homogeneity of continuous casting billet under PMO[J]. CONTINUOUS CASTING, 2020, 39(4): 7-11.

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20200017 OR http://www.chinamet.cn/Jweb_lz/EN/Y2020/V39/I4/7

[1]	王涛, 张炯明, 赵新凯. 150 mm×150 mm 方坯连铸机末端电磁搅拌及拉速对铸坯内部质量的影响[J]. 连铸, 2014, 39(6): 50.
[2]	张兴中, 倪满森. 连铸技术的发展状况及高效连铸[J]. 中国冶金, 2003, 13(3): 45.
[3]	张爱民, 李殿明. 高拉速方坯低倍缺陷的成因及分析[J]. 钢铁技术, 1999 (5): 10.
[4]	李梦曦, 马坤霞, 付建军, 等. 薄板坯连铸机高拉速下铸坯内部质量控制实践[J]. 连铸, 2015, 40(4): 74.
[5]	王青春, 陈天明, 陈亮, 等. 20CrMnTiH 齿轮钢铸坯内部质量控制研究[J]. 钢铁钒钛, 2014, 35(2): 103.
[6]	牛亮, 仇圣桃, 赵俊学, 等. 连铸工艺参数对 38CrMoAl 大圆坯碳偏析的影响[J]. 钢铁研究学报, 2018, 30(5): 359.
[7]	李颇, 张程, 申祖峰. 连铸工艺对风电用 42CrMo4 连铸圆坯内部质量影响的研究[J]. 特钢技术, 2016, 22(3): 40.
[8]	胡文豪, 朱施利. 连铸工艺参数对 GCr15 钢碳偏析的影响[J]. 钢铁, 2010, 45(11): 48.
[9]	李存牢. 安钢小方坯连铸机高效化改造[J]. 中国冶金, 2003, 13(7): 39.
[10]	童为硕, 李晶, 闫威. 连铸工艺参数对 SWRH82B 钢 160 mm×160 mm 坯中心碳偏析的影响[J]. 特殊钢, 2018,39(4): 38.
[11]	陈吉文, 李美玲, 吴超, 等. 不同拉速工艺下连铸板坯横截面中心偏析和夹杂物的原位统计分布分析[J]. 冶金分析, 2006, 26(3): 1.
[12]	李博知, 潘远望, 曾节胜. 高速连铸用保护渣技术[J]. 中国冶金, 2003,13(10): 32.
[13]	铁生年, 张芬娟, 陈列, 等. 连铸保护渣性能研究进展[J]. 中国冶金, 2008,18(12): 1.
[14]	陈亮, 宋波, 陈天明, 等. 320 mm× 410 mm 断面重轨钢连铸坯宏观偏析控制关键技术[J]. 连铸, 2017, 42(4): 43.
[15]	曾杰, 陈伟庆, 曹长法, 等. 轻压下对82B钢矩形坯内部质量的影响[J]. 炼钢, 2015, 31(4): 63.
[16]	李德军, 李泽林, 赵志刚, 等. 单辊轻压下对高碳钢 SWRH72B 180 mm×180 mm铸坯内部质量的影响[J]. 特殊钢, 2017, 38(6): 33.
[17]	朱富强, 任振海, 陈占领,等. 采用脉冲磁致振荡技术提高矩形AM2锚链钢连铸坯的均匀性[J]. 上海金属, 2019,41(3):96.
[18]	仲红刚,刘海宁,徐智帅,等.脉冲磁致振荡凝固均质化技术及装备[J]. 钢铁, 2019,54(8):174.
[19]	龚永勇,程书敏,钟玉义,等. 脉冲磁致振荡凝固均质化技术[J]. 金属学报, 2018,54(5):757.
[20]	张云虎, 仲红刚, 翟启杰. 脉冲电磁场凝固组织细化和均质化技术研究与应用进展[J]. 钢铁研究学报, 2017, 29(4): 249.
[21]	郝军利, 赵静, 仲红刚, 等. PMO 作用下连铸二冷区电磁场-流场-温度场的数值模拟[J]. 上海大学学报:自然科学版, 2018, 24(3): 412.
[22]	刘海宁, 王郢, 李仁兴, 等. PMO 凝固均质化技术在 20CrMnTi 齿轮钢上的应用[J]. 钢铁, 2019, 54(6): 69.
[23]	王海洋, 滕力宏, 赵阳, 等. PMO 作用对连铸轴承钢凝固组织及碳化物的影响[J]. 连铸, 2019, 43(6): 32.
[24]	GONG Y Y, LUO J, JING J X, et al. Structure refinement of pure aluminum by pulse magneto-oscillation[J]. Materials Science and Engineering: A, 2008, 497(1/2): 147.