High-current-density gas-shielded arc welding
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsKei YAMAZAKI, Reiichi Suzuki, Yimin Yuan
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Abstract
Disclosed is a method for performing gas-shielded pulsed arc welding at high current densities with a flux-cored wire as an electrode wire. The pulsed arc welding is carried out by passing a pulsed current so that a pulse peak current density during a pulse peak time Tp is 400 to 950 A/mm2, a pulse base current density during a pulse base time Tb is 200 A/mm2 or more and differs from the pulse peak current density by 200 to 400 A/mm2, and an average current density is 350 to 750 A/mm2. The method allows significant spatter reduction while attaining a high deposition rate.
Claims3
A method for high-current-density gas-shielded arc welding, the method comprising the step of:
- performing pulsed arc welding with a flux-cored wire as an electrode wire,
- wherein the pulsed arc welding is carried out by passing a pulsed current so that a pulse peak current density during a pulse peak time Tp is 400 to 950 A/mm2, a pulse base current density during a pulse base time Tb is 200 A/mm2 or more and differs from the pulse peak current density by 200 to 400 A/mm2, and an average current density is 350 to 750 A/mm2.
Dependencies are inferred from the claim text.