| 摘要 |
PURPOSE:To smoothly and surely start electro-slag welding, by using bent small iron pieces of a specified bulk specific gravity instead of the conventional steel wool and cut wire, by generating are in the pile of bent small iron pieces, and by covering the upper surface of the pile with a flux. CONSTITUTION:The clearance between base materials 1 is extended with chute 4, and the opening at the side of groove 2 and chute 4 is closed with side plate 6. Bent small iron pieces 7 having 0.1-1g/cm<3> bulk specific gravity are piled at the lowest part 3 over the total width, and pile 8 is pressed by inserting electrode 9 into groove 2 from the top. Moreover, flux 10 is put into groove 2 and the upper surface of pile 8 is covered with flux 10. When a voltage is impressed on electrode 9 under this condition, arc is generated between bent small iron pieces 7 in pile 8. Milling chips and cutting dust, such as lathe chips, etc., are used for bent small iron pieces 7. |
