High Temperature Properties of Slab of Stainless Steels and Application in Concasting Secondary Cooling Process

Special Steel ›› 2014, Vol. 35 ›› Issue (2): 68-70.

High Temperature Properties of Slab of Stainless Steels and Application in Concasting Secondary Cooling Process

Xie Changchuan¹ , Han Lina¹, Hu Bo¹, Cui Lixin², Ai Jian³

1. CCTEC Engineering Co Ltd, Wuhan 430073；
2. Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083；
3. Stainless Steel Works, Taishan Iron and Steel Co, Laiwu 271100

Received:2013-10-23 Online:2014-04-01 Published:2022-09-14

不锈钢板坯的高温力学性能及连铸二次冷却工艺中的应用

谢长川¹，韩丽娜¹，胡波¹，崔立新²，艾健³

1. 中冶连铸技术工程股份有限公司，武汉 430073 ；
2. 北京科技大学冶金与生态工程学院，北京 100083 ；
3. 泰山钢铁公司不锈钢厂，莱芜 271100 ；

作者简介:谢长川(1976-)，男，博士，高级工程师，北京科技大学(本科)毕业，连铸机设计和新产品开发。

Abstract

Abstract: The production flow sheet for stainless steels steelmaking at Taishan Steel Works is 60 t EAF-GOR bottom blowing converter refining-160 mm x 1600 mm slab casting process. With using Gleeble-1500D thermal simulation testing machine, the high temperature properties of casting slab of austenite stainless steel 201 ( 6.54Mn-16.71Cr-3.62Ni) and steel J4 (8.93Mn-14.84Cr-l.08Ni-l.25Cu) , ferrite stainless steel 430 ( 16.29Cr) and martensite stainless steel 410S (13.5Cr) have been tested and studied. Results show that the Ⅲ brittle temperature region of each stainless steel is respectively steel 201-665 ~990 ℃，steel J4- 600~950 ℃ steel 430- 600~700 ℃ and steel 410S-720~930 ℃ ； It is available for steel 201 and J4 to use weaker secondary cooling and to straighten respectively at ≥1010 ℃ and ≥995 ℃, for steel 430 to use stronger secondary cooling and to straighten at 900~950 °C, and for steel 410S to use weaker secondary cooling and to straighten at ≥ 980 °C.

Key words: Austenite, Ferrite, Martensite, Stainless Steel, Slab, High Temperature Properties, Concasting, Secondary Cooling

摘要： 泰山不锈钢厂采用60 t电弧炉-GOR底吹转炉精炼-160 mm×1600 mm板坯连铸的工艺流程冶炼不锈钢。通过Gleeble-1500D热模拟试验机试验研究了奥氏体不锈钢201(6.54Mn-16.71Cr-3.62Ni)和J4(8.93Mn-14.84Cr-1.08Ni-1.25Cu),铁素体不锈钢430(16.29Cr)和马氏体不锈钢410S(13.5Cr)连铸板坯的高温力学性能。结果表明,各不锈钢的第Ⅲ脆性温度区分别为201钢-665~990℃,J4钢-600~950℃,430钢-600~700℃和410S钢-720~930℃;201和J4钢采用较弱二次冷却,矫直温度分别控制为≥1010℃和≥995℃,430钢用较强二次冷却,矫直温度900~950℃;410S钢用较弱二次冷却,矫直温度≥980℃。

关键词: 奥氏体, 铁素体, 马氏体, 不锈钢, 板坯, 高温性能, 连铸, 二次冷却

Xie Changchuan , Han Lina, Hu Bo, Cui Lixin, Ai Jian. High Temperature Properties of Slab of Stainless Steels and Application in Concasting Secondary Cooling Process[J]. Special Steel, 2014, 35(2): 68-70.

谢长川, 韩丽娜, 胡波, 崔立新, 艾健. 不锈钢板坯的高温力学性能及连铸二次冷却工艺中的应用[J]. 特殊钢, 2014, 35(2): 68-70.

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