Research and Production of Nb-Ti Microalloy Steel QStE380TM Hot Rolled Plate for Auto Beam by CSP Line

Special Steel ›› 2006, Vol. 27 ›› Issue (2): 49-51.

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Research and Production of Nb-Ti Microalloy Steel QStE380TM Hot Rolled Plate for Auto Beam by CSP Line

Wang Baofeng¹ , Ding Guo¹ , Zhao Liping¹ , Wang Xuelian² , Li Degang²

1. University of Science and Technology of Inner Mongolia,Baotou 014010;
2. CSP Plant,Baotou Iron and Steel(Group)Co.,Lad., Baotou 014010;

Received:2005-11-02 Online:2006-04-01 Published:2023-03-02

Nb-Ti微合金化钢QStE380TM汽车大梁用热轧钢板的研制

王宝峰¹，丁国¹，赵丽萍¹，王雪莲²，李德刚²

1. 内蒙古科技大学，包头 014010;
2. 包钢薄板坯连铸连轧厂，包头 014010;

作者简介:王宝峰(1965-)，男，内蒙古科技大学研究生部主任，教授，1997年～1999年留学于加拿大英属哥伦比亚大学，主要从事高效连铸和材料微观组织工程等领域的研究工作。

Abstract

Abstract: The steel QStE380TM-0.04~0.08C,0.20~0.35Si,1.20~1.35Mn,≤0.015P,≤0.010S,0.015~0.025Nb,0.005～0.015Ti 6~12 mm hot rolled plate for auto beam has been researched and produced by hot metal pretreatment - 210 t top and bottom combined blown converter - LF refining - two strand vertical-bending concaster(65 mm slab)- 6-stand SMS mill control rolling and cooling process. The examination results showed that the structure of plate was ferrite + minor pearlite with grain size 4~7 pm,of which the mechanical properties met to requirement of standard,the maximum difference of yield strength of plate at different direction was 30 MPa,the maximum difference of tensile strength was 20 MPa and the ambient impact energy of majority plate was 140～180 J.

Key words: Nb-Ti Microalloying, CSP Process, Steel for Auto Beam

摘要： 采用铁水预处理-210 t顶底复吹转炉-LF精炼-2流立弯型CSP铸机(65 mm厚铸坯)-6机架SMS轧机控轧控冷工艺试制了成分(%)为:0.04~0.08C,0.20~0.35Si,1.20~1.35Mn,≤0.015P,≤0.010S,0.015~0.025Nb,0.005~0.015Ti QStE380TM汽车大梁用6~12 mm热轧钢板。检验结果表明,钢板组织为铁素体+少量珠光体,晶粒尺寸4~7μm,其机械性能均符合标准要求,钢板不同方向屈服强度最大差值为30 MPa,抗拉强度最大差值20 MPa,大多数钢板常温冲击功为140~180 J。

关键词: Nb-Ti 微合金化, CSP工艺, 汽车大梁用钢

Wang Baofeng , Ding Guo , Zhao Liping , Wang Xuelian , Li Degang. Research and Production of Nb-Ti Microalloy Steel QStE380TM Hot Rolled Plate for Auto Beam by CSP Line[J]. Special Steel, 2006, 27(2): 49-51.

王宝峰, 丁国, 赵丽萍, 王雪莲, 李德刚. Nb-Ti微合金化钢QStE380TM汽车大梁用热轧钢板的研制[J]. 特殊钢, 2006, 27(2): 49-51.

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Research and Production of Nb-Ti Microalloy Steel QStE380TM Hot Rolled Plate for Auto Beam by CSP Line

Nb-Ti微合金化钢QStE380TM汽车大梁用热轧钢板的研制

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