| 摘要 |
<p>A gas-cooled cathode (13) for a direct current arc torch (4). The cathode has a tip (14) connected to a body. A gas passage for working gas passes through the body of the cathode, passes proximate the tip and exits the body adjacent the tip. The cathode is spaced apart from and insulated from the anode (17) by means of a collar (15) of insulating material.</p> |
