低碳锰铌钢两道次热变形的变形抗力  

DEFORMATION RESISTANCE OF THE TWO- PASS HOT DEFORMATION OF LOW-CARBON Mn-Nb STEEL

作　　者：李正升 张关云 王培兴 郑芝兰 

机构地区：[1]上海钢铁工艺技术研究所

出　　处：《钢铁研究学报》1989年第3期29-35,共7页Journal of Iron and Steel Research

摘　　要：用热扭转试验方法,对低碳锰铌钢两道次热变形过程中的变形抗力进行了研究。基于软化百分数能反映多道次变形过程中应变累积效应的事实,提出了计算多道变形时变形抗力的“有效应变法”的计算方法。用该方法,对“多道次、小压下、累积压下率”控制轧制工艺条件下,轧制力和轧制力矩进行了计算。通过计算确定,多道次、小压下率轧制能降低每道次轧制力和轧制力矩,但消耗的总功率高于大压下率轧制所消耗的总功率。Deformation resistance of the two-pass hot deformation of Low carbon Mn-Nb steel has been examined by means of the simulation method of hot torsion. On the basis of the fact that the fractional softening can reflect the effect of strain accumulation, the effective strain mothod is proposed to calculate the flow stress and the mean yield stress in the multipass deformation. With respect to the technology of rolling with multipass, small reduction and accumulation of successive reduction, the change of force-...

关 键 词：道次 屈服应力 轧制力矩 轧制扭矩 轧制参量 压下率 变形抗力 热变形 塑性变形 低碳 

分 类 号：TF4-55[冶金工程—钢铁冶金]