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本课题针对悬浮稳定装置焊接效率低、变形大的焊接难题，设计了机器人等离子焊接工艺试验方案，分别设计、实施了薄板等离子角接和堆焊两个焊接工艺试验。首先：针对内圈薄壁筒形件搭接四块碳钢薄板进行焊接，设计了角接试验，把100×100mm和50×100mm尺寸的碳钢薄板以角接形式搭接，利用机器人等离子弧焊进行焊接试验，通过多次试验得到多组结果，对试验结果进行分析，得到理想的焊接参数。然后:针对外圈薄壁筒形件搭接四块碳钢薄板时，等离子焊枪无法进去工件内工作这一问题，应用机器人等离子熔透焊接方法进行了堆焊试验，在一整块3mm碳钢薄板上进行多次堆焊试验，并对所得到的多条焊缝进行宏观观察后，选取几条较完美的焊缝进行切割，并进行研磨金相腐蚀观察。通过对比实验发现当焊接电流为165A,离子气流量为1.4L/min，保护气体流量为15L/min，焊接速度为2.5mm/s时能实现把碳钢薄板一次焊透成型并成形美观。24543
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关键词: 等离子弧焊 机器人焊接 一次焊透 T型角接。
毕业设计说明书（毕业论文）外文摘要
Title research of low deformation of cylindrical pieces plasma welding
Abstract
In this paper, summary to the question that the low-efficiency welding
and large deformation of the suspension stabilizer. The tests of the robots
plasma welding was been designed. Robots plasma welding was adopted for the surfacing and fillet joint of the thin plate. The first experiments: the inner thin-wall cylindrical parts and four pieces of sheet steel，the test of angle joint was been designed. 50×100mm size of sheet steel and 100×100mm size of sheet steel was been overlapped in the form of angle joint. Using robots plasma welding, several test results were been gotten though many tests. Though the analysis on the experiment results，we can get the ideal welding parameters. The second experiment, because of the reason that plasma torch lacks exercise space. 3mm steel plate is the object studied in this paper, robots plasma welding was adopted for the surfacing .Several test results were been gotten and studied. A few more perfect welds were been selected and cut. The weld was been polished , corroded and metallographic observation. When the welding current is 165A, the rate of plasma gas flow is 1.4L/min, the welding speed is 2.5mm/s, the shield gas is 15L/min. A good forming welding can be gotten.
The keywords: plasma arc welding robot welding a penetration T angle joint
目次
１ 绪论 1
1.1 选题背景及其意义 2
1.2 焊缝缺陷介绍 2
1.3 等离子弧焊的主要工艺参数 3
1.4 等离子焊接工艺参数的影响 3
1.5 等离子焊接及机器人焊接的研究现状 6
1.6 本课题研究内容 8
2 机器人等离子自动焊接系统设计 8
2.1. 机器人等离子自动焊接系统总体方案 8
2.2 机器人等离子自动焊接系统各部分介绍 8
2.3 机器人等离子自动焊接系统 10
3 机器人等离子堆焊焊接工艺研究 10
3.1 焊前清理 10
3.2 焊接参数规范表 11
3.3 焊缝外观成形及试验结果分析 11
4 T型角接焊缝工艺参数研究 16
4.1 焊前处理 16
4.2 焊接参数规范表 17
4.3 焊缝外观成形及试验结果分析 18