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摘要本文针对高强高硬中碳调制钢和Q235钢螺柱之间的焊接在实际应用中的一些局限，比如冷裂、孔洞、未焊透等问题，提出复合热源机器人螺柱焊接方法、采用直接螺柱焊、感应热源预热+拉弧螺柱焊、感应热源预热+拉弧螺柱焊接+后热处理三种焊接的方法来对比焊接后的接头质量，并选出较好的一种焊接方法，对这三种焊接试样分别研究焊接后的外观成形、接头性能和裂纹倾向，研究发现，采用复合热源加热的试样能形成良好的焊缝外观，接头的性能也比直接螺柱焊的好，而感应热源预热+拉弧螺柱焊接+后热处理又优于感应热源预热+拉弧螺柱焊接。23865
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关键词 复合热源螺柱焊接 冲击韧性 接头性能 冷裂纹倾向
毕业设计说明书（毕业论文）外文摘要
Title Experimental Research on Robot Stud Welding Process of Steel Plate in Super High Strength
Abstract
Aiming high strength and high hardness weld carbon steel and Q235 steel studs modulation between the practical application of some limitations, such as cold cracking, holes, lack of penetration problems, stud welding robot made of composite heat method using direct screw column welding, heat induction preheating + arc stud welding, heat induction preheating + drawn arc stud welding method of welding heat treatment of three to compare the quality of the welded joint, and a welding method preferably selected , these three samples were studied welding weld appearance after forming joint performance and cracking tendency, the study found, using a composite sample heat source can form a good weld appearance, performance is also welded joints than direct stud well, while the induction heat arc stud welding preheat + + after heat treatment is better than induction heat preheat + arc stud welding.
Keywords Composite heat stud welding Impact toughness
Joint performance Cold cracking tendency
目录
1 绪论 1
1.1 引言 1
1.2 螺柱焊焊接技术的发展 2
1.2.1 国外螺柱焊接技术的发展 2
1.2.2 国内螺柱焊接技术发展现状 3
1.3 螺柱焊接 3
1.3.1 螺柱焊接原理和系统组成 3
1.3.2 焊接质量的影响因素 4
1.3.3 螺柱焊接的特点 4
1.3.4 螺柱焊接的发展趋势 5
1.5 本课题主要研究内容 6
2 机器人复合热源自动螺柱焊工艺试验 6
2.1 685钢螺柱焊的设计思路 6
2.2 机器人复合热源自动螺柱焊的材料 7
2.2.1. 675调制钢 7
2.2.2. 685调制钢 8
2.2.3. Q235螺柱 8
2.3 机器人复合热源自动螺柱焊的试验设备 9
2.4 机器人自动螺柱焊的焊接试验及焊缝外观 11
2.4.1 试验方案 11
2.4.2 螺柱焊接试验 12
2.4.2.1 直接焊接 12
2.4.2.2 预热焊接 12
2.4.2.3 预热+后热方法焊接 13
2.4.3 对三个焊接的效果图进行分析 14
3 机器人螺柱焊焊缝的金相及力学性能分析 14