共查询到19条相似文献,搜索用时 156 毫秒
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针对盾构机中关键部件的焊接加工特点与要求,建立了适应并满足不同部件焊接生产制造的机器人工作站;采用福尼斯TPS 500i焊接电源中的不同特性的PMC工艺开展了盾构机部件厚板多层多道焊接相关工艺研究。研究表明,Dynamic工艺适合于平焊与横焊位置打底焊接;Universal工艺适合于平焊位置填充与盖面焊接;PCS工艺适合于横焊位置填充与盖面焊接。由于Mix工艺的冷却时间较长,更利于熔融金属的冷却凝固,使用Mix工艺可以获得表面成形良好的立焊焊缝。对于盾构机典型关键部件的焊接制造,采用Dynamic+Universal工艺进行多层多道平焊,Dynamic+PCS工艺进行多层多道横焊,Mix工艺进行多层多道立焊后,焊缝成形良好,无未熔合及咬边等焊接缺陷。上述工艺组合可以用于盾构机部件的机器人自动化焊接中。 相似文献
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随着压力容器、管道工程、海洋、舰船和原子能等技术的高速发展,要求采用全位置自动焊接的地方越来越多。采用TIC焊进行全位置焊接可以获得纯净优质的焊缝,但是生产效率太低。熔化极气体保护焊是一种生产效率高、成本低、容易实现自动化的焊接方法,近年来在压力容器、管道工程、舰船生产、机械制造和机车车辆等行业得到广泛的应用。但是,由于熔滴过渡和电弧的特殊性,要能满足全位置焊接的要求,必须对电弧进行控制。 相似文献
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通过多年的球罐组焊实践以及对旧罐的开罐检查,我们发现带装球罐环缝是一个薄弱环节,控制不好会出现错边量、棱角度超标以及丁字口焊接裂纹问题。这些问题一旦出现很难修复,并在设备运行时会引起应力集中,造成 相似文献
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Jiang Lipei Jiao Xiangdong Xue Long Ma Hongze Li Mingli Yang Zhaochun Department of Mechanical Engineering Institute of Petro-chemical Technology Beijing China 《机械工程学报(英文版)》2002,15(2):173-176
An intelligent welding robot for spherical tank's all-position multi-layer welds is developed. Based on the dynamics analyzing and simulation testing, a flexible magnetic wheel mechanism is created as the robot's walking carriage. It makes the robot directly attracted to the surface of the spherical tank so as to realize the all-position walking and welding without rail. At the same time, a CCD real-time tracing system is developed for the robot to repeatedly trace the all-position and multi-layer seams. The welding tests show that the welding robot can make the all-position and multi-layer welds with high tracing accuracy, excellent quality and reliable behavior, and it can be applied for practical production. 相似文献
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YC4E类柴油机的油底壳,由于受汽车底盘的限制,壳体由上、中、下体拼焊而成,焊接工艺采用MAG熔化焊工艺.由于采用手工焊接而且焊接量非常大,焊缝质量极不稳定,在用户使用过程中,焊缝开裂的故障率非常高.通过更改焊缝结构,并根据油底壳的实际情况设计CNC的自动化焊接机,从而实现了自动化焊接,提高了焊接质量和生产效率,并降低了焊缝开裂的故障率,. 相似文献
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Jiangwei Liu Zhenghua Rao Shengming Liao Pei-Chung Wang 《The International Journal of Advanced Manufacturing Technology》2014,72(9-12):1705-1716
In this work, the oscillating arc narrow gap all-position gas metal arc (GMA) welding process was developed to improve efficiency and quality in the welding of thick-walled pipes. The statistical models of narrow gap all-position GMA weld bead geometry were developed using response surface methodology (RSM) based on central composite design (CCD). The developed models were checked for their adequacy and significance by ANOVA, and the effects of wire feed rate, travel speed, dwell time, oscillating amplitude and welding position on weld bead dimension were studied. Finally, the optimal welding parameters at welding positions of 0° to 180° were obtained by numerical optimization using RSM. 相似文献
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为了保证管线钢全位置焊接过程的稳定及良好的焊接质量,采用IGBT逆变式弧焊机对基于视觉感知管道环焊机器人系统的焊接电源进行了配置,并利用开发的管道环焊机器人对管线钢进行了焊接工艺实验,研制出一套可行的焊接工艺参数及控制参数.实验结果证明,实际焊接时管道环焊机器人的焊接参数稳定,焊枪能够准确地跟踪焊缝,并自动完成全方位焊接.焊缝的质量完全满足管线钢焊接工艺要求. 相似文献