| 摘要 |
According to one aspect of the present technique a novel ceramic contac t tip extension is featured, The ceramic extension may comprise a zirconium- based material. According to another aspect of the present invention, a novel wire - feed welding system is featured. The welding system may feature an electrical pow er source, a wire-feeder having a wire electrically coupleable to the electric power source, and a welding implement adapted to receive a tubular metal wire from the wire-feeder. The welding implement has a contact tip and a contact tip extension. According to yet another aspect of the present technique, a method for protecting a contact tip is feature. The method comprises thermally insulating the contact tip.
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