钢液过热度控制对连铸工艺和铸坯质量的影响

特殊钢 ›› 2008, Vol. 29 ›› Issue (5): 50-51.

钢液过热度控制对连铸工艺和铸坯质量的影响

鲁路，鲁开嶷

西安建筑科技大学冶金工程学院，西安 710055

收稿日期:2008-03-13 出版日期:2008-10-01 发布日期:2023-01-06
作者简介:鲁路（1972-），男，工程师，1994年西安建筑科技大学毕业，从事钢铁冶金研究及教学工作。

Influence of Controlling Molten Steel Superheat on Technology of Concasting and Quality of Billet

Lu Lu , Lu Kaiyi

The School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055

Received:2008-03-13 Published:2008-10-01 Online:2023-01-06

摘要/Abstract

摘要： 研究了25 t钢包炉和16 t中间包中GCr15、60Si2Mn、40Cr和20钢液的过热度控制。钢液过热度控制主要取决于钢包衬蓄热过程达到平衡状态时钢液温降速率-钢包和中间包钢液温降速率分别为≤1℃/min和≤0.5℃/min;钢液过热度为15～35℃时,200 mm×200 mm铸坯等轴晶率可达20%～30%,连铸拉漏率≤0.23%,铸坯质量良好。

关键词: 钢液过热度, 连铸工艺, 铸坯质量

Abstract: The controlling molten steel superheat of GCrl5, 60Si2Mn, 40Cr and 0.20C steel in 25 t ladle and 16 t tundish has been studied. The controlling of molten steel superheat was mainly depended on temperature decreasing speed of molten steel as the heat storage process of ladle line came to equilibrium state - temperature decreasing speed of molten steel in ladle ≤l ℃/min and that in tundish ≤0.5 ℃/min； as superheat of molten steel was between 15 T and 35 T , the equiaxial crystal ratio in 200 mm x 200 mm billet was up to 20%-30% , the ratio of casting breaking out ≤0.23% , and it was available to get better quality of billet.

Key words: Superheat of Molten Steel, Concasting Process, Quality of Billet

鲁路, 鲁开嶷. 钢液过热度控制对连铸工艺和铸坯质量的影响[J]. 特殊钢, 2008, 29(5): 50-51.

Lu Lu , Lu Kaiyi. Influence of Controlling Molten Steel Superheat on Technology of Concasting and Quality of Billet[J]. Special Steel, 2008, 29(5): 50-51.

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