一、前言磁性焊剂明弧半自动悍是1948年以后才出現的焊接方法,它的基本原理是在陶質焊剂中加适当的鉄粉,焊剂的粒度約为0.2—0.5毫米。焊接时,焊絲末端因通电而磁化,故將带有鉄粉的焊剂吸着。但当时这种先进的焊接工艺还沒能滿足生产的要求。53年美国把磁 First, the foreword Semi-automatic magnetic arc welding arc is only after 1948 welding method appears, its basic principle is to add the appropriate solder powder ceramic powder, flux particle size of about 0.2-0.5 mm. Welding, the end of the wire magnetized due to electricity, it will be with flux powder sorption. But at that time this advanced welding process has not yet met the production requirements. 53 years the United States to magnetic