150 mm×150 mm方坯连铸二次冷却工艺的优化

特殊钢 ›› 2005, Vol. 26 ›› Issue (6): 52-53.

150 mm×150 mm方坯连铸二次冷却工艺的优化

刘欣

济南钢铁集团石横特殊钢厂，肥城271612

收稿日期:2005-06-03 出版日期:2005-11-08 发布日期:2023-04-13
作者简介:刘欣(1974),男，工程师，1998年包头钢铁学院毕业。从事连铸技术管理工作。

Optimization of Secondary Cooling Process for 150 mm×150 mm Billet Concasting

Liu Xin

Shiheng Special Steel Works,Jinan Iron and Steel Group Corp,Feicheng 271612

Received:2005-06-03 Published:2005-11-08 Online:2023-04-13

摘要/Abstract

摘要： 石横特钢厂由R9 m 4机4流连铸机连铸150 mm×150 mm碳素和合金结构钢、高碳钢和焊条钢。通过优化二冷段工艺,将0.5~0.8 MPa水压、0.80~1.30 L/kg比水量和3段手动水冷工艺分别改成0.20~0.30 MPa水压、0.25~0.75 L/kg比水量和4段自动(水+气)水冷工艺后,杜绝了中间裂纹和鼓肚缺陷,并使脱方、缩孔、疏松缺陷降低了50%~80%。

关键词: 150 mm×150mm 方坯连铸, 二次冷却, 工艺优化

Abstract: The 150 mm×150 mm billet of carbon and alloy constructional steel,high carbon steel and welding rod steel casts by R9 m 4 strand concaster at Shiheng Special Steel Works. Through optimized secondary cooling process modified 0.5~0.8 MPa water pressure,0.80~1.30 L/kg water ratio and 3 section manual water cooling process to 0.20～0.30 MPa water pressure,0.25～0.75 L/kg and automatic(water + gas)- water cooling process, the middle crack and bulging defects were eliminated and the rhomboidity,dispersed shrinkage and shrinkage cavity defects decreased by 50%～80%.

Key words: 150 mm×150 mm Billet Concasting,Secondary Cooling,Processing Optimization

刘欣. 150 mm×150 mm方坯连铸二次冷却工艺的优化[J]. 特殊钢, 2005, 26(6): 52-53.

Liu Xin. Optimization of Secondary Cooling Process for 150 mm×150 mm Billet Concasting[J]. Special Steel, 2005, 26(6): 52-53.