| 摘要 |
PURPOSE:To eliminate deviation in center during feeding of a flux cored wire for welding and to obtain a satisfactory bead shape in said wire by specifying the relation between the hardness in a weld zone in the section of the wire sheath and the hardness in a non-weld zone. CONSTITUTION:The value of P expressed by the equation where the hardness in a weld zone at the section of the sheath of a flux cored wire for welding formed by packing a flux in a seamed tubular wire is designated as P1 and the hardness in a non-weld zone as P2 is regulated to <=8%. Feedability is stabilized by said wire and the deviation in the center during feeding is eliminated. Such wire is therefore applicable to welding using a long sized feeder and welding of thin sheets for which the accuracy in an aiming position is required. |
