| 摘要 |
A thermal tool (100) for high temperature work such as plasma welding or cutting has a replaceable nozzle (102) coupled to an elongate support (106) via interengaging threaded portions (108, 110) on each. The threaded portions are tapered and good heat conduction is provided from the nozzle to the elongate support, giving the nozzle a longer life. The nozzle can be readily removed and changed. A fluid-cooling channel (120) is enclosed in the second part adjacent the interengaging threads, which may be buttresstype threads. |
