楔横轧同种材料层合轴的展宽段应力分析  

Stress analysis of spreading stage for cross wedge rolled the same material laminated shaft

作　　者：刘文萍[1] 彭文飞[1] 束学道[1] 孙宝寿[1] 

机构地区：[1]宁波大学浙江省零件轧制成形技术研究重点实验室,宁波315211

出　　处：《塑性工程学报》2014年第5期82-87,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51405248);国际科技合作项目(CB11-13);宁波市自然科学基金资助项目(2013A610043);中南大学高性能复杂制造国家重点实验室开放基金(Kfkt2013-04);浙江省教育厅资助项目(Y201224321);浙江省新苗计划资助项目(2013R405066)

摘　　要：中空结构轴类件具有显著减轻轴重的优势,但其成形制造困难。文章提出楔横轧层合轴的思路,应用DEFORM-3D软件对楔横轧同种材料层合轴和单层轴的成形过程进行有限元数值模拟,得到了双层同种材料层合轴及单层材料轴在展宽段的变形特征及应力分布规律的特点。通过对比两种轴的应力分布,总结出层合轴应力分布的形成原因,以及应力分布场对轧制实验中同种材料结合理论的指导意义。通过实验,验证了楔横轧同种材料层合轴的可行性,为楔横轧轧制同种或异种层合轴的深入研究提供了理论依据。Shaft parts with hollow structure have an advantage of reducing significantly the weight of the shaft , but its shape manufacturing is difficult .This paper presents a concept of forming laminated shaft by cross wedge rolling .The forming process of rolling the same material laminated shaft and single shaft by cross wedge rolling was simulated numerically by the finite element software DEFORM-3D .The deformation and stress distribution rules of the same material laminated shaft and single shaft were obtained during stretching stage by cross wedge rolling .At last , the feasibility of the cross wedge rolled the same material lami-nated shaft was verified by the experiment .The rules provide theoretical guidance for further study of cross wedge rolled the same and different material laminated shafts .

关 键 词：楔横轧 层合轴 同种材料 展宽段 应力分析 

分 类 号：TG335.19[金属学及工艺—金属压力加工]