ELECTROSLAG WELDING METHOD

PURPOSE:To prevent the slag inclusion near the contact point between a base metal and a strap plate and to obtain a defect-less electroslag weld zone by providing a groove which prevents the stagnation of molten slag in the base metal near the part where the angle between the base material and the strap plate is acute. CONSTITUTION:A base metal 102 is installed with the spacing from a base metal 101 and copper strap plates 103, 104 are attahced to enclose the spacing between the two materials, thereby forming a groove part 105. A welding wire 106 urapping a wire 107 is inserted into the part 105, and electroslag welding is performed. A groove 108 having a distance L3 from the plates 103, 104 and having a width L1 and a depth L2 is formed in the position of the part 105 of the material 101 in the weld line direction. The cooling near the end of the groove of the material 101 by the plates 103, 104 is relieved by the groove 108, whereby the stagnation of molten slag 109 is prevented and the transmission efficiency of slag heat is improved.