汽车大梁用热轧钢带工艺研究

来源期刊：钢铁钒钛2010年第3期

论文作者：姜英禹

文章页码：75 - 79

关键词：汽车大梁用钢带； 非金属夹杂物； 各向异性； 韧性-脆性转变温度

Key words：steel strips for automobile beam； non-metallic inclusions； anisotropy； ductile-brittle transition temperature

摘    要：通过化学成分设计和轧制工艺研究,开发了含铌、含钛的B510L、B550L汽车大梁热轧钢带。钢材的抗拉强度、焊接性能及冷加工性能满足标准要求,钢材的韧性-脆性转变温度低于-40℃。经过变性处理,钢中的非金属夹杂物呈球状弥散分布,较好地解决了钢材力学性能各向异性的问题。

Abstract: By designing reasonable chemical compositions and studying rolling technology,Bayi Iron & Steel Company have developed B510L and B550L hot-rolled steel strips for automobile beam bearing titanium and columbium.The tensile strength and weldability and cold deformation capability of rolled steel can meet the requirement of relevant standards and customers.The ductile-brittle transition temperature of rolled steel is less than -40 ℃.The non-metallic inclusions in steel show the distribution of dispersion of globosity and the question of anisotropy is resolved preferably.