摘要由于传统电弧螺柱焊焊接工艺对高强高硬中碳钢和普通Q235螺柱焊接易产生未熔合、气孔、成形不良和裂纹的缺陷，本实验采用了复合热源螺柱焊接工艺和自动焊接控制系统的方法，先采用感应加热的方法将母材进行预热，预热温度达到一定程度后再进行螺柱焊接工作，从而来解决传统螺柱焊工艺的缺陷。设计试验分别对不同感应预热时间下的接头进行抗剪强度测试、显微金相分析。结果表明：对于Ø16mm和22mm的螺柱，最佳预热温度为700度；随螺柱直径增大，接头质量有下降趋势。68186

毕业论文关键词:  螺柱焊 复合热源 感应加热 自动化。

毕业设计说明书（论文）外文摘要

Title  Automatic compound heat sources studs welding technology research

Abstract

According to the traditional manual arc studs welding process of 20mm high strength high hard medium-carbon steel with ordinary Q235 studs, is easy to get incomplete fusion, porosity, crack and forming problem, this paper put forward the compound heat source studs welding process and automatic welding system, use the induction heating method to preheating the base metal, until a certain temperature before welding, in order to solve the traditional studs welding process shortcomings. The experiment is designed to use the shear strength test and microscopic metallographic analysis to study the welding joints which was preheated in different time. Final conclusion: for Ø16mm studs, best preheating temperature is 700degree, for Ø22mm is the sam; With studs’ diameter increasing, there is a trend of decrease in the final joint quality. 

Keywords:  studs welding,compound heat sources, induction heating, automatic.

目 录

1 绪论 6

1.1 课题研究背景 6

1.2 国内外螺柱焊研究概况及发展成果 6

1.2.1 螺柱焊发展史 6

1.2.2 螺柱焊的原理 7

1.2.3 螺柱焊的分类 7

1.2.4 螺柱焊的突出特点 8

1.3 国内外研究概况及发展趋势 9

1.3.1 国内外螺柱焊差距 9

1.3.2 螺柱焊发展的阻碍因素 9

1.3.3 焊机的发展 10

1.4 复合热源自动螺柱焊工艺 10

1.5 本实验研究内容 11

2 复合热源自动螺柱焊试验材料及设备 12

2.1 材料 12

2.2 机器人系统 12

2.3 自动螺柱焊系统 14

2.3.1 螺柱焊焊接电源 14

2.3.2 自动螺柱焊枪 15

2.4 其他设备 15

2.5 本章小结 16

3 复合热源自动螺柱焊工艺试验方法设计 17

3.1 中碳调质钢厚大构件与中大直径螺柱焊接难点 17

3.2 复合热源加热方法 17

3.2.1 焊接中的感应加热技术 17

3.2.2 感应加热的优点 17

3.2.4 感应加热的分类和选择