Arc behavior during GMAW-P pulse welding of 690 MPa marine structural steel was studied,and influence of pulse parameters on arc length was analyzed.Arc length range ofone drop per pulse is 3～6 mm,arc length range one pulse with multiple drops is 5～8 mm,transition zone from one drop per pulse to one pulse with multiple drops is 5～6 mm,and short circuit transition arc length is less than 2 mm.Pulse time increases and arc length increases;Pulse current increases,arc length first increases and then decreases;Pulse frequency increases,arc length becomes longer;As base current in-creases,arc length decreases.
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维普
