| 摘要 |
PURPOSE:To decrease the fluctuation in a flux filling rate, etc., and to improve weldability by limiting the apparent electric resistance of a flux cored wire for arc welding formed by filling the flux into a metallic sheath to a specific range. CONSTITUTION:The apparent electric resistivity (r) of the flux cored wire for arc welding after cold drawing is controlled to 20-40muOMEGA.cm. The electric resistivity (r) is expressed by RXA/L where R is the resistance of the wire having a length Lcm; L is the length of the wire (cm); A is the sectional area of the sheath (cm<2>). The quality of the product is uniformized and the weldability is improved by constituting the wire in such a manner. |
