Automatic arc welding process using a consumable nozzle
AssigneeKobe Steel, Ltd.
InventorsKatsuro Iio, Akiyoshi Osato
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Abstract
An automatic arc welding process for welding in a substantially horizontal direction, includes the steps of placing a longitudinal consumable nozzle along the joint line within the weld groove, the nozzle being coated with an insulating material disposed therearound and having a hollow core portion, and continuously feeding a wire through the hollow core portion.
Claims15
An automatic arc welding process for butt welding together two vertically disposed base materials with the welding line in a horizontal plane, characterized in that said process comprises the steps of:
- placing backing materials upon opposite sides of said welding line,
- placing a longitudinal horizontal disposed consumable nozzle, which is coated with an insulating material disposed therearound and has a hollow core portion, along a horizontal welding line between said base materials,
- continuously feeding a horizontally disposed welding wire through said hollow core portion at a rate faster than said nozzle is being consumed;
- and
- generating arcs from both the consumable nozzle and the continuously moving welding wire to achieve deep penetration and to prevent the forward flow of the molten metal toward the nozzle enabling the formation of a large amount of deeply penetrated deposited metal.
An automatic arc welding process for welding together two base materials in a substantially horizontal direction, characterized in that said process comprises the steps of:
- placing a longitudinal consumable nozzle, which is coated with an insulating material disposed therearound and has a hollow core portion, along the joint line within groove means interposed between said base materials,
- selecting said nozzle such that the ratio of the vertical dimension to the horizontal dimension of said nozzle having a rectangular cross-sectional configuration, or the ratio of the major diameter to the minor diameter of said nozzle having an ovoid cross-sectional configuration is 1.1 - 5.0 :
- 1,
- placing backing materials upon opposite sides of said joint line,
- filling with flux the area interposed between said backing materials and said base materials, and
- continuously feeding a common solid welding wire through said hollow portion of said consumable nozzle.
Dependencies are inferred from the claim text.