| 摘要 |
<p>Welding torch (1) comprises: an inert gas supply; a torch terminal block (2); a torch neck at one end of the terminal block; a torch head (4) provided at the other end of the torch neck, which exhibits an inner tube (5), an outer tube (7) and an insulating sleeve between the inner tube and the outer tube, where the insulating sleeve is provided outside the inner tube; an insulating body in the terminal block, where the insulating body is structured on its side facing the torch neck to form at least one radial gas channel; and an outer annular channel coupled with the radial gas channel. Welding torch (1) comprises: an inert gas supply; a torch terminal block (2); a torch neck subsequently at one end of the torch terminal block; a torch head (4) provided at the other end of the torch neck, where the torch neck exhibits an inner tube (5), an outer tube (7) and an insulating sleeve provided between the inner tube and the outer tube, where the insulating sleeve is provided outside the inner tube, and is in direct contact with the inner tube, and conducted up to the torch terminal block; an insulating body provided in the torch terminal block, through which the inner tube is conducted into the torch terminal block, where the insulating body is structured on its side facing the torch neck to form at least one radial gas channel; and an outer annular channel coupled with the radial gas channel, provided in the torch terminal block for distribution of protective gas around the inner tube.</p> |
