摘要本文采用硅青铜+钢焊丝对铜T2和钢Q235异种金属进行双丝焊焊接试验研究。因焊丝直径都采用Ф1mm,所以铜钢的送丝比例就是焊丝的送丝速度比。焊接试验结果表明：当1.6≥Cu:Fe>1.1时，不出现裂纹；当Cu:Fe≦1.0时，焊缝易出现裂纹。且当主丝采用硅青铜焊丝，焊接电流95-105A、焊接电压范围在25-35V；辅丝采用钢焊丝，焊接电流范围在95-105A、焊接电压范围在25-30V；焊接速度40cm/min，可以获得优良的焊接接头。金相观察表明：铜-钢接头界面熔合良好，无裂纹、气孔、夹渣等缺陷，且焊缝靠近铜侧的铁较焊缝靠近钢一侧的铁含量要低些。68178

毕业论文关键词：  铜钢对接焊  硅青铜焊丝+钢焊丝  双丝焊工艺 

毕业设计说明书（论文）外文摘要

Title   the Research on iron and copper metal compounds  Produced by Double wire welding    

Abstract

This article includes the T2 copper and steel Q235 twin wire welding dissimilar metals research process with  silicon bronze + steel. Because the wire diameter are used Ф1mm, so the proportion of copper steel wire is wire feed speed ratio.When the situation goes between1.6≥Cu:Fe>1.1,we can not find cracks.When Cu:Fe≦1.0,it is easy to find cracks. And when the main thread using silicon bronze wire, welding current 95-105A, welding voltage range of 25-35. Auxiliary wire using steel wire, welding current range 95-105A, welding voltage range of 25-30V; welding speed 40cm/min. Metallographic observation showed that: copper - steel joint interface good fusion, no cracks, porosity, slag and other defects. And close to the copper side seam weld iron than the iron content of the side close to the steel to be lower.

Keywords: copper steel butt welding  silicon bronze wire and steel wire double wire welding process

目录

1  绪论 1

1.1 铜钢焊接性 1

1.2 Fe-Cu焊接方法的分类与分析 3

1.2.1熔焊 3

（1）手工电弧焊 3

1.2.2钎焊 5

1.2.3摩擦焊 5

1.3 双丝电弧焊 6

1.3.1双丝焊接的原理 6

1.3.2双丝焊接的研究现状 6

1.4 本课题研究的主要内容 8

2 双丝焊试验原理及设备 8

2.1法国SAF双丝焊机的工作原理 8

2.1.1 焊接设备 9

3 双丝焊平板对焊实验 11

3.1 试验材料 11

3.2 双丝焊试验过程 11

3.2.1 焊前准备工作 11

3.2.2 焊接试验准备 12

3.3 试验结果 12

3.3.1 主焊丝是铜焊丝，辅焊丝是钢焊丝 12

3.3.2 主焊丝是钢焊丝，辅焊丝是铜焊丝 17

4 金相实验