Plasma arc torch tip

Details Plasma arc torch tip Plasma arc torch tip

B - Operations, Transporting

23

K

B23K 10/00 (2006.01) H05H 1/28 (2006.01) H05H 1/34 (2006.01)

Patent

CA 2482910

A plasma arc torch (10) is provided that comprises a set of torch consumable components secured to a torch head (12), wherein a supply of cooling fl uid flows coaxially through the torch to cool torch components and a supply of plasma gas and secondary gas flows through the torch to generate and stabilize a plasma stream for operations such as cutting workpieces. The torch consumable components, in part, comprise an electrode (100) and a tip (102) that include a variety of configurations for improved cooling, ele ctrical contact, and attachment to adjacent torch components. Further, a consumables cartridge is provided for ease of use and replacement of the torch consumable components. Additionally, methods of operating the plasma arc torch at relatively high current levels are also provided by the present invention.

Cette invention concerne un chalumeau à arc à plasma (10) comprenant un jeu de composants consomptibles fixés sur une buse de chalumeau (12). Du liquide de refroidissement traverse coaxialement le chalumeau pour en refroidir les éléments constitutifs cependant que du gaz plasma et un gaz secondaire qui traversent le chalumeau génèrent et stabilisent un flux de plasma pour des opérations de type découpage. Les composants consomptibles sont constitués pour partie d'une électrode (100) et d'une pointe (102) dont les configurations diverses permettent d'améliorer le refroidissement, la facilité d'emploi et la fixation sur des pièces adjacentes du chalumeau. Il existe par ailleurs une cartouche de composants consomptibles faciles à utiliser et à remplacer. Sont également décrites des méthodes d'utilisation du chalumeau à arc à plasma sous des courants relativement élevés.

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