（毕业设计论文）《三辊行星轧制复合管的组织分析》.doc

南 京 理 工 大 学 毕业设计说明书(论文) 作 者: 学 号： 学院(系): 材料科学与工程 专 业: 材料科学与工程 题 目: 三辊行星轧制复合管的组织分析 教授 教授 指导者： (姓 名) (专业技术职务) 评阅者： (姓 名) (专业技术职务) 2012年 6 月 毕业设计说明书（论文）中文摘要 三辊行星轧机(Planet Schrage Walzwerk ，简称PSW)是一种轧制变形量大，轧制温度高的先进轧制机械，被应用于轧制半成品或成品圆棒无缝钢管生产等，并应用到铜管材生产中，成功地轧制出完全再结晶的细晶铜管材。由于具有许多独特的优点，自七十年代以来一直受到人们的关注，目前国内外有众多专家对其展开研究。 本文介绍三辊行星轧机的结构、传动原理和轧制原理，并概括了国内外的研究现状。对三辊行星轧制过程中停机取样获得的铜铝复合管（Aluminum clad copper tube ，简称ACC）进行实验，观察复合管不同变形量下的金相组织，测定复合管在不同变形量下的硬度值。通过比较分析可知，铜铝后复合管在大变形轧制后，晶粒逐渐细化、均匀，硬度随着变形程度的增大而增加，但达到峰值后会急剧下降，最终稳定下来，其值略大于轧前。 关键词：行星轧制；三辊行星轧机；微观组织；大变形 毕业设计说明书（论文）外文摘要 Title The Organization Analysis of Three Rollers Planets Rolling Multiple-unit tube Abstract Three roller mill (Planet Walzwerk Schrage, as PSW) is a advanced rolling machinery of large deformation rolling and high temperature rolling, Being applied to product rolling semi-finished products or round rods seamless steel tube production, and being application to product copper tube, it rolled out fine-grain copper tube of perfect recrystallization successfully, due to it has many unique advantages, it had been concerned since the 1970s, and now many experts at home and abroad are researching it. This paper not only introduced the three rollers planets mill’s structure, transmission principle and rolling principle but also summarized the research situation at home and abroad. Experiment the Aluminum clad copper tube (ACC) which was got from rolling stop sampling, observe the multiunit tube’s metallographic organization under different deformation, determinate the multiunit tube’s metallographic organization in different deformation. Through the comparison and analysis, we know rolled ACC’s grain size refining and uniform gradually, hardness increases as deformation degree, but it would drop dramatically after the peck and settle eventually, its value is slightly bigger than rolling before. Key