| 摘要 |
An arc-welding contact tip to be provided to a welding torch for establishing an electric connection with a consumable electrode fed to a welding zone through the contact tip during welding operations is disclosed. The contact tip includes a housing to be secured to the welding torch and defining an elongated interior passage through which the consumable electrode is to be fed to the welding zone while the welding operations are being performed. At least a portion of a peripheral surface defining the interior passage is provided with an electrically conductive metal alloy comprising copper and tungsten. Further, the metal alloy includes about 50% by weight to about 90% by weight tungsten.
|
