Abstract:

This paper introduces the application and benefit evaluation of trackless crawling welding robot in the welding of medium and small carbon steel tanks. For a long time, the welding of medium and small carbon steel tanks mainly depends on manual welding, which has the problems of low welding efficiency, long welding time, unstable welding quality and high welder cost. Through the independent development of construction method, trackless crawling welding robot has been successfully applied to the welding of medium and small carbon steel tanks. With the improvement of operation proficiency, the welding time is gradually reduced, the welding efficiency is continuously improved, and the final time input tends to be stable. Robot welding has obvious advantages in terms of welding quality, welding efficiency and labor cost, the welding efficiency is 2 to 3 times higher than that of manual welding, the primary welding qualification rate is over 98%, and the labor cost saving is more than 30%. The effect of cost reduction and efficiency increase is remarkable.

Key words: trackless crawling, welding robot, medium and small type, carbon steel tanks, welding process, welding efficiency, benefit evaluation;

摘要：

介绍了无轨导爬行焊接机器人在中小型碳钢储罐的焊接应用及效益评价情况。中小型碳钢储罐焊接手工焊存在焊接效率低、焊接作业周期长、焊接质量不稳定、人工成本高等问题。自主开发了无轨导爬行焊接机器人施工工法并成功应用于中小型碳钢储罐焊接。随着操作熟练程度的提升，焊接时间逐渐缩短，焊接效率不断提高，最终投入时间趋于稳定。机器人焊接从焊接质量、焊接效率及投入人工成本等方面优势明显，焊接效率较手工焊提高2～3倍，焊缝一次焊接合格率均在98%以上，同时可节约人工成本30%以上，降本增效效果显著。

关键词: 无轨导爬行, 焊接机器人, 中小型, 碳钢储罐, 焊接工艺, 焊接效率, 效益评价