金属板材冷压焊工艺试验(毕业论文)详解.doc

毕 业 论 文 作 者： 学 号: 学 院： 材料科学与工程学院 系(专业): 焊接 题 目: 金属板材冷压焊工艺试验 指导者: 教授 评阅者: 年 6 月 8 日 毕业设计（论文）中文摘要 金属板材冷压焊工艺试验 摘要： 冷压焊是在室温下，借助压力使待焊金属产生塑性变形而实现固态焊接的方法。通过塑性变形挤出连接部位界面上的氧化膜等杂质，使纯金属紧密接触，达到晶间结合。 本试验对铝/铜和铝/两组材料进行了冷压，压下率分别为50%55%、60%、70%和50%50%、60%、65%。通过剥离，65%压下率为Al/Cu板材的临界变形，%压下率为Al/板材的临界变形。随压下率的升高，界面有效结合（由表面硬化层破裂促使界面金属的相互嵌入）区域增加，增大了界面结合强度。压下率 毕业设计（论文）外文摘要 Title Sheet metal cold welding process test Abstract The Cold welding is a method which is at room temperature, with the aid of pressure to achieve solid state welding to weld metal plastic deformation. The aluminum/copper and aluminum/Iron clad sheet was manufactured by cold pressing composite method, and reduction rate in thickness are 50%,55%,60%,70% and 50%,55%,60%, 65%. Through clad sheet peel test result , it is showed that 65% reduction rate in thickness is threshold deformation of Al/Cu clad sheet, 60% reduction rate in thickness is threshold deformation of Al/Iron clad sheet. This paper studies the copper aluminum and iron and aluminum cold welding between dissimilar metals welding process and weld organization state analysis. Preliminary conclusions are: with the reduction rate increasing, effective interface (mutually embedded by the surface hardened layer of the interface of metal rupture) region expanded, and the interface bonding strength enhanced. Cause plastic deformation of dissimilar metallic bond is formed between the metal atoms, so as to achieve the effect of the connection. Keywords： cold welding Dissimilar metal Copper and aluminum Iron and aluminum reduction rate  目 录 1 绪论 1 1.1 金属冷压焊的发展及优缺点 1 1.1.1 冷压焊的发展 1 1.1.2 冷压焊的优缺点 1 1.2 冷压焊的应用及研究 2 1.2.1 冷压焊的应用 2 1.2.2 冷压焊的研究目的与意义 3 1.2.3 冷压焊的研究现状 3 1.3 冷压焊的发展方向 5 2 板材冷压焊连接实验 5 2.1 冷压焊试验装置 5 2.2