Zavarivanje, Vol. 59 No. 5-6, 2016.
Preliminary communication
STUDY ON METAL TRANSFER CONTROL USING SYNCHRONOUS CONTROL OF WIRE FEEDING AND CURRENT WAVEFORM
T. Era
; DAIHEN corporation,Kobe,Japan
K. Ono
; DAIHEN corporation,Kobe,Japan
S. Mizuura
; DAIHEN corporation,Kobe,Japan
H. Miyahara
; DAIHEN corporation,Kobe,Japan
S. Hirota
; DAIHEN corporation,Kobe,Japan
T. Ueyama
; DAIHEN corporation,Kobe,Japan
Abstract
A gas metal arc welding process that changes the wire feed direction according to the arc phenomena has been proposed and applied to a fi eld of the ultra-sheet plate joining on MAG welding process, due to the ultra-low spatter generation and the low heat input into
the base metal in a current range of the short-circuit transfer mode. When such the welding process can realize the stable metal transfer in a current range of the globular transfer mode under the carbon dioxide shielding gas supplying, it can contribute the improvement
of the further productivity. Under the circumstances, the authors have developed the Buffer Position Control which controls the interference reduction of the wire feed direction between the push feeder and the pull feeder and can compensate the constant mean wire feed rate, and the Pulsed Dip Transfer Process which forms the pulsatile output of the welding current during arc duration to stabilize the metal transfer by the constant voltage characteristic and improve the heat input to the base metal. In this paper, the principle of
these controls and the effect of high speed welding with ultra-low spatter generation of the sheet metal joining will be presented.
Keywords
Gas Metal Arc welding; Spatter reduction; Wire feed control; Buffer position control; Current waveform control; Penetration, Pulsed Dip Transfer; Sheet metal joining; Lap joint
Hrčak ID:
173172
URI
Publication date:
15.12.2016.
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