轧辊倾角对二辊斜轧实心坯应变、应力场的影响  

INFLUENCE OF CROSS ANGLE ON STRESS AND STRAIN OF TUBE BLANKS DURING ROTARY ROLLING

作　　者：李胜祗[1] 陈大宏[1] 孙中建[1] 李连诗[2] 王起江[3] 郑坚敏[3] 

机构地区：[1]安徽工业大学 [2]北京科技大学 [3]上海宝钢集团公司

出　　处：《钢铁》2001年第4期34-38,共5页Iron and Steel

基　　金：安徽省教育厅重点科研计划项目! (99JR0 178ZD)

摘　　要：轧辊倾角在斜轧过程中是积极工艺参数 ,其对产品的产量和质量有重要影响。用 MARC/ Autoforge软件对圆坯二辊斜轧过程进行了三维热—力耦合弹塑性数值模拟 ,得到了不同轧辊倾角条件下的应力、应变场 ,验证了塑性变形强度沿圆坯直径的 W形分布形态 ,并分析了轧辊倾角对场变量的影响规律。结果表明 ,在通常轧辊倾角范围内 ,随送进角的增大 ,横断面上的变形不均匀性减轻 ,横向拉应力最大值σy max增大 ;随辗轧角的增大 ,横断面上的变形不均匀性加重 ,但σymax变化不大。The roll cross angle is an active parameter for rotary rolling because of it's influence on both the productivity and product quality With MARC/Autoforge, this paper presents details of 3-D numerical simulation during rotary rolling of tube blanks and verifies the radial W-shape distribution of strain in blank Furthermore, it analyzes the influence of cross-angle on the strain and stress The result shows that within the range of common used cross-angles, the larger the feed angle, the slighter is the inhomogeneity of deformation and the larger the maximum transverse tensile stress in horizontal section The larger the toe-in angle, the more inhomogeneous is the distribution of deformation, but there is no remarkable difference for maximum transverse tensile stress

关 键 词：斜轧 应力场 应变场 三维热-力耦合有限元模拟 轧辊倾角 

分 类 号：TG335[金属学及工艺—金属压力加工]