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在工业中经常会遇到各种刀具、钢筋、管子、管道等的对接焊。对于一般尺寸的工件,最合理的方法是接触焊,目前我国对于截面积在1000毫米~2左右的刀具、锅炉管子、石油钻管等已经大量采用了闪光对焊。但是在许多情况下,由于工件尺寸相当大,需要控制复杂的大功率的接触焊设备,而这种对焊机目前我国为数不多,不能完全满足工业的需要。接触电渣焊无论在设备结构、电源功率、生产效率.焊接质量、应用范围等方面都具有很大的价值,所需电功率仅为接触对焊的10～20%,不需要巨大的压力,生产率不亚于接触对焊,焊接质量可靠,尤其对焊不同金属材料和高合金钢时比其他对焊法都有利。为此,我们对这项课题进行了一系列研究。
In the industry often encounter a variety of knives, steel, pipes, pipes and other butt welding. For the general size of the workpiece, the most reasonable method is to contact welding, at present our country for cross-sectional area of about 1000 mm ~ 2 tools, boiler tubes, oil drilling pipe, etc. have been widely used flash butt welding. However, in many cases, due to the size of the workpiece, the need to control the complex high-power contact welding equipment, which is currently a small number of welder, can not fully meet the needs of industry. Electroslag welding is of great value in terms of equipment structure, power supply, production efficiency, welding quality and application range. The required electric power is only 10 to 20% of the contact butt welding, and does not require huge pressure, productivity As much as the contact butt welding, welding quality and reliable, especially when welding different metal materials and high alloy steel than other butt welding method are beneficial. To this end, we conducted a series of studies on this topic.