| 摘要 |
PURPOSE:To obtain the flux core wire of excellent welding workability by performing a hot and cold wire drawings after dividing and filling a flux composition to the independent plural hollow parts separated by the steel wall in the longitudinal direction of a steel ingot. CONSTITUTION:More than two pieces of holes are provided over the full length of a steel ingot 1, and the flux 2 of CaF2, for instance is filled up into the hole of the one part and the flux 3 blending and mixing TiO2, MgO and SiO2 into the hole of the other part separately and independently. The above wire is obtd. with the hot and cold wire drawing of the steel ingot 1 incorporating these fluxs 2, 3. With said method the above wire which can form the low melting point slug having excellent welding workability can be produced with good efficiency without causing the melting of the inclusion fluxes 2, 3 under hot wire drawing.
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