摘要本论文开展了采用连续驱动摩擦焊焊接铝-铜异种合金的工艺和组织性能研究。焊接材料为铬锆铜和1050铝。针对某一特定的连续驱动摩擦焊焊接参数式样，与国外已经投产的式样进行对比，测量焊缝的导电性能，测试接头的抗拉强度，观察焊缝显微组织进行电镜扫描分析。研究表明：摩擦压力6MPa，顶锻压力5MPa，摩擦时间2.8s的试验参数焊接效果良好。在测试电阻时做的可行性分析表明在离中轴线距离不同的位置虽然母材电阻值和总的电阻值不同，但是他们的差值即焊缝的电阻值相同，因此可以对焊缝电阻值进行测量。67495

毕业论文关键字  连续驱动摩擦焊接   铜-铝异种金属接头   导电性能   抗拉强度

毕业设计说明书（论文）外文摘要

Title   The friction-welding-technology-researching of   

         dissimilar materials between copper and aluminum   

Abstract

In this thesis,the continuous drive friction welding between aluminum and copper are discussed.Chromium zirconium copper and aluminium 1050 are used in welding. Then,for a specific continuous drive friction welding weldment, compared with abroad which has been put into production patterns .A lot of testes,including Resistance Determination of the Weld Tensile Test,Microstructure Analysis of the Weld, and, electron microscope scanning analysis are conducted to detect the quality of the weld.When friction welding effect is good friction pressure of 6 MPa, upset pressure of 5 MPa, The test parameters of 2.8 s.Although the parent metal from the central axis of different position resistance value is different, but the weld resistance is the same, therefore weld resistance can be measured.

Keywords   Continuous drive friction welding    Dissimilar metal joint of copper and aluminum    Conductive properties     Tensile strength

目   录

1绪论 1

1.1选题意义 1

1.2异种材料焊接现状 1

1.3铝-铜焊接技术 4

1.4连续驱动摩擦焊接技术 5

1.5课题研究目的和研究内容 6

2焊接实验条件和测试手段 7

2.1焊接材料规格 7

2.2焊接设备 8

2.3测试手段 10

3试验结果及其分析 11

3.1实验参数 11

3.2实验效果图 12

3.3实验结果分析 12

4组织及其力学性能分析 13

4.1拉伸实验 13

4.2显微金相组织分析 14

4.3电镜扫描分析 17

5焊缝电阻值测试 18

5.1高精度测试方法原理 18

5.2测试结果 21

结  论 23

致  谢 24

参 考 文 献 25

附录