Research and Development of the Advanced High Strength Steel for the Mining Machinery

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Gu, Linhao^1,2,3 ; Liu, Jianming^1 ; Lu, Shiping^1 ; Zhang, Suyuan^1 ; Liu, Chunming^1

Shougang Research Institute of Technology, No.69, Yangzhuang Street, Shijingshan District, Beijing, China^1

Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology, No. 69, Yangzhuang Street, Shijingshan District, Beijing, China^2

Beijing Engineering Research Center of Energy Steel, No. 69, Yangzhuang Street, Shijingshan District, Beijing, China^3

关键词: Advanced high strength steel;    High strength;    High-strength structural steels;    Low temperature toughness;    Low temperatures;    Quenched and tempered steel;    Quenching and tempering;    Research and development;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022080/pdf
DOI  :  10.1088/1757-899X/382/2/022080

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Shougang has developed the advanced high strength steel(AHSS) of SQ690D for the lightweight heavy mining machinery by utilizing low carbon and microalloyed design and two-stage rolling coupled with purposeful heat treatment through quenching and tempering(Q&T). The quenched and tempered steel of 800MPa offers high strength, good formability, excellent low temperature toughness, and good weldability. For the high strength structural steel of SQ690D, the yield strength is more than 750MPa, the tensile strength is not less than 800MPa, the elongation is more than 20%, and the low temperature(-40 °C) impact energy value is more than 200J. The steel plate is successfully applied in Shougang 150 ton haul truck buckets, and it has better satisfied the requirements of the performance of the steel plate for the heavy mining machinery.