| 摘要 |
<p>The invention relates to an electric arc-welding welding head (100) comprising a contact device (170) and one or more wire feeder units (130, 150), the contact device (160) encompassing an electrode assembly (170), the electrode assembly (170) comprising at least two fusible continuously-fed wire electrodes (172, 174, 176) arranged in a contact device (160) An electrically insulated duct (180) is provided for electric insulation of at least one of the electrodes (174) so that the electrode (174) is electrically insulated from other electrodes (172, 176) in the electrode assembly (170). The invention also relates to an electric arc-welding contact device (160) and an electric arc-welding welding head assembly (200).</p> |
