Patent ID: 6207928
Filing Date: 2001-03-27
Classification: B23K

Abstract:
A consumable electrode type pulse arc welding method in which at least one of the welding current and the welding voltage provides output in a pulse manner, said method comprising the steps of:setting the welding current at an initial welding current setting value lower than that of a normal welding current setting value in a first step which is a first predetermined period of time from the start of welding;increasing the initial welding current setting value to the normal welding current setting value during a second step which is a second predetermined period of time after the first step has passed; andpreventing a pulse output from the first step to a first point which is a predetermined setting value of the welding current in the second step prior to reaching the normal welding current setting value:,wherein from the first point till the end of the second step a change in the welding current per unit time of the rise and fall of the pulse output is less than a normal change in the welding current per unit time of the pulse output.