摘要铝铜复合管材既具有铜的优良的导电导热耐腐蚀性能,又有铝的质轻价廉等特性,广泛应用于工业生产。这个课题主要是对三辊行星轧机轧制铝包铜管的组织和力学性能进行研究。了解三辊行星轧机轧制铝包铜管的工作流程。以铝合金作为外管层和无氧铜 管作为内胎通过三辊行星轧机紧密结合在一起。选择不同规格的ACC管,利用扫描电镜和电子能谱分析铝铜结合层厚度,同时铝包铜管的力学性能也通过拉伸试验进行测试。实验结果表明,铝-铜复合层不仅是机械结合,也存在几个微米厚度的冶金结合。此外,拉伸试验表明,复合材料的拉伸强度不小于170Mpa,同时它的伸长率高于9%。87184
毕业论文关键词:铝包铜管;轧制;三辊行星轧机;复合层;
Abstract Al-Cu composite material has been widely used in industrial production, owing to excellent thermal conductivity, electric conductivity, corrosion-resistant properties of copper, light weight and low cost of Aluminum, to name a few。In the present paper, it is about the research onmicrostructure and mechanical properties of aluminum clad copper tube by planet schrage walzwerk process。 And a fabrication process to roll-bonding aluminum clad copper tube(ACC) by Planet Schrage Walzwerk(PSW) has been introduced。 Aluminum alloy(3003) as a outer tube layer and oxygen free copper(C12200) tube as a inner tube, were rolled to bond together using a PSW mill。 Different specifications of ACC tube were selected to investigate the Al-Cu bonding layer thickness using scanning electronic microscope with EDX , and mechanical properties of ACC tube were also test by tensile test。 The experiment results indicated that Al-Cu composite layer is not only mechanical bonding but also metallurgical bonding with thickness of several micrometers。Moreover, tensile test indicated thatthe tensile strength of ACC was not less than170 Mpa and elongation is not less than 9% 。
Key words:Aluminum Clad Copper Tube; Roll-bonding; Planet Schrage Walzwerk;composite layer;
目录
第一章 绪论 1
1。1 引言 1
1。2 铜铝复合材料的发展 1
1。3 铜铝复合材料的复合技术 2
1。4 三辊行星轧机工作机理 3
1。4。1 三辊行星轧机的优点 5
1。4。2 三辊行星轧机的不足 5
1。5 铜铝复合的机理 6
1。6 选题的意义 7
1。7 本课题的主要研究内容 7
第二章 实验内容 8
2。1 实验材料 8
2。2 铝包铜管的制备工艺 8
2。3 实验流程 9
2。4 实验设备 9
2。5 实验方法 9
2。5。1 金相组织观察分析试验 9
2。5。2 结合层界面元素线扫描 10
2。5。3 硬度测试分析实验 10
2。5。4 拉伸测试分析实验 11
2。5。5 断口扫描观察 12
第三章 实验结果 13
3。1 铝包铜管的组织分析 13
3。1。1 宏观照片