方锭改锻圆锭过程中心开裂的数值模拟分析  

Numerical Simulation Analysis on Cracking of Center in Process of Cuboid Ingot Forging into Round Ingot

作　　者：阮树荣 吴永强 王开坤[2] RUAN Shurong;WU Yongqiang;WANG Kaikun(Jiangsu Su'nan Heavy Industry Machinery Technology Co.,Ltd.,Changshu 215500,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]江苏苏南重工机械科技有限公司,江苏常熟215500 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《热加工工艺》2021年第11期104-108,共5页Hot Working Technology

基　　金：国家重点研发专项资助项目(2017YFB0701803)。

摘　　要：运用有限元分析软件Deform-3D对方锭改圆锭锻造过程进行了数值模拟,计算得到了长方体钢锭经过多次镦拔工艺锻造成圆锭过程中的最大主应力、等效应力、等效应变、损伤值。结果表明:在方锭改圆锭的锻造过程中,心部最大主应力为拉应力且数值较高,等效应力、等效应变、损伤值也较高。这些是产品心部产生裂纹的主要原因,在生产过程中应加以控制。The finite element analysis software Deform-3 D was used to simulate the process of forging a cuboid ingot to a round ingot. The maximum principal stress, equivalent stress, equivalent strain and damage value in the process of the cuboid ingot forging into round ingot by multiplel upsetting-drawing processes were obtained. The results show that in the forging process from cuboid ingot to round ingot, the maximum principal stress in the core is tensile stress and the value is high. The equivalent stress, the equivalent strain and the damage value are also high. These are the main reasons for cracks in the core of products, which should be controlled in the production process.

关 键 词：最大主应力 等效应力 等效应变 损伤值 

分 类 号：TG316[金属学及工艺—金属压力加工]