| 摘要 |
<p>A simple and inexpensive gas nozzle for arc welding capable of reducing adhesion of sputter and enhancing welding quality and welding workability. A gas nozzle (5) so fixed removably to the torch head (2) of a welding torch (1) as to surround a contact chip (4) for feeding a welding wire (W) is formed of a material, e.g., a pasteboard a part of which is carbonized through adhesion of sputter (S) and comes off together with the sputter (S). When the sputter (S) adheres to the gas nozzle (5) during welding, the adhering part is carbonized because of the heat of the sputter (S) and comes off together with the sputter (S). Consequently, adhesion and deposition of the sputter (S) onto the gas nozzle (5) can be reduced infallibly.</p> |
