高碳钢连铸保护渣的性能

doi:10.13228/j.boyuan.issn1005-4006.20210114

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (2452 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to study the compatibility of mold fluxes for casting high carbon steel in the process of continuous casting, the melting, wettability, viscosity, phase distribution and heat transfer ability of typical mold fluxes for casting high carbon steel have been investigated. The results show that the ranges of the initial melting temperature, wetting angle, viscosity, breaking temperature and liquid layer ratio of the four mold fluxes are 1 110-1 129 ℃, 30.1°-37.8°, 0.210-0.312 Pa·s, 1 046-1 130 ℃ and 14.7%~18.9%, respectively. Among these mold fluxes, mold flux 1 can melt very fast to form liquid slag, and infiltrate the gap between mold wall and shell to form even slag film, since its melting temperature (1 110-1 345 ℃) and viscosity (0.264 Pa·s) are relatively low, liquid layer ratio (18.9%) is relatively high, and break temperature (1 059 ℃), as well as heat transfer ability are appropriate. These advantages can reduce the stick breakout and cracks, meanwhile smooth the high carbon steel continuous casting process.

Key words： high carbon steel mold flux slag film lubrication heat transfer

Received: 02 September 2021

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Wan-lin
	YAN Xiong
	ZHOU Le-jun
	LUO Hao
	HE Hang
	SONG Guang-xin

Cite this article:

WANG Wan-lin,YAN Xiong,ZHOU Le-jun等. Properties of mold fluxes for casting high carbon steel[J]. CONTINUOUS CASTING, 2021, 40(6): 48-53.

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20210114 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I6/48

[1]	魏巍. 高碳高合金钢薄板坯连铸保护渣的设计与开发[D]. 唐山:河北联合大学, 2014.
[2]	曾建华. 高碳钢大方坯连铸用保护渣的研究[D]. 重庆:重庆大学, 2003.
[3]	张利民, 朱立光, 张彩军, 等. 高碳钢50-2冲压鞋包头开裂原因分析与控制[J]. 中国冶金, 2021, 31(2): 44.
[4]	左小坦, 陈永峰, 张洪彪, 等. 连铸工艺参数对40Cr圆坯碳偏析的影响[J]. 中国冶金, 2020, 30(6): 97.
[5]	彭治强, 曹江海, 侯自兵. 基于高通量试验原理82B连铸坯组织形貌特征[J]. 钢铁, 2021, 56(7): 86.
[6]	刘铖霖,曹建春, 周煌,等. 铌对高碳钢奥氏体向珠光体转变规律的影响[J]. 钢铁, 2019, 54(11): 101.
[7]	杨学富. 宝钢1 930 mm连铸高碳钢保护渣的开发[C]// 中国金属学会连铸坯质量技术研讨会.包头:中国金属学会连铸分会,2005.
[8]	刘国梁, 倪有金, 马文俊, 等. 迁钢板坯连铸高碳钢的生产技术[J].连铸,2017(2):72.
[9]	车从荣,陈伟,金书淮,等.淮钢大断面高碳钢圆坯保护渣的优化及应用[J].现代冶金,2017,45(6):37.
[10]	中户参, 唐晓燕. 对结晶润滑有影响的连铸保护渣的物性试验及其理论分析[J]. 宝钢情报, 1990 (1):33.
[11]	曾建华, 李桂军, 杨素波,等. 高碳钢连铸保护渣润滑行为的数学模拟[C]//第四届发展中国家连铸国际会议论文集. 北京:中国金属学会,2008.
[12]	翟冰钰, 张磊, 王万林. CSP包晶钢连铸用保护渣综合理化性能的优化[J]. 连铸, 2020(5):30.
[13]	Kashiwaya Y, Cicutti C E, Cramb A W, et al. Development of double and single hot thermocouple technique for in situ observation and measurement of mold slag crystallization[J]. ISIJ International, 1998, 38(4):348.
[14]	Kashiwaya Y, Nakauchi T, Pham K S, et al. Crystallization behaviors concerned with TTT and CCT diagrams of blast furnace slag using hot thermocouple technique[J]. ISIJ International, 2007, 47(1):44.
[15]	Kashiwaya Y, Cicutti C E, Cramb A W. An investigation of the crystallization of a continuous casting mold slag using the single hot thermocouple technique[J]. ISIJ International, 1998, 38(4):357.
[16]	邱斌, 袁守谦, 曹余良,等. MgO和Li2O对预熔型无氟连铸保护渣熔化温度的影响[J]. 连铸, 2009(2):44.
[17]	程红艳, 王雨, 李丹科,等. 连铸保护渣组分对熔渣表面张力的影响[J]. 连铸, 2008 (4):42.
[18]	刘振. 表面张力对保护渣设计及选用的影响[J]. 山东冶金, 2005, 27(1):38.
[19]	王欢, 唐萍, 文光华,等. 含铝TRIP钢结晶器保护渣黏度特性[J]. 北京科技大学学报, 2010, 32(6):725.
[20]	ZHU C Y, HAN W D, LIU C J, et al. Crystallization temperature and crystallization ratio of mold flux[J]. Journal of Iron and Steel Research International, 2005, 12(6): 23.
[21]	唐萍. 连铸结晶器内渣膜结晶动力学及渣膜结构研究[D]. 重庆:重庆大学, 2010.
[22]	Ozawa S, Susa M, Goto T, et al. Lattice and radiation conductivities for mould fluxes from the perspective of degree of crystallinity[J]. ISIJ International, 2006, 46(3):413.