调质型高强钢Q690中厚板的研制开发
Research and Development of Quenching and Tempering High Strength Steel Q690
张 虹1, 张炜星2, 方 晨1
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作者单位:1. 秦皇岛职业技术学院, 河北 秦皇岛 066100; 2. 首秦金属材料有限公司, 河北 秦皇岛 066326
中文关键字:高强钢Q690; 调质; 力学性能; 焊接裂纹敏感系数
英文关键字:high strength steel Q690; quenching and tempering; mechanical properties; welding crack sensitivity coefficient
中文摘要:调质型高强钢Q690采用低碳低合金化学成分设计, 运用控制轧制和控制冷却技术,进行淬火后回火,使Q690钢具有比传统调质钢更低的碳当量和更小的焊接裂纹敏感性系数。
英文摘要:The chemical composition of quenching and tempering steel Q690 with low carbon and low alloy was designed. Using controlled cooling and controlled rolling technology, the Q690 steel has lower carbon equivalent and welding crack sensitivity compared with conventional quenching and tempering steel.