| 摘要 |
A metallurgical or chemical oxygen nozzle including an oxygen lance head (1) for pointing at a metallurgical melt. The nozzle comprises a front surface (40) and an assembly of at least two substantially concentric tubes (20, 30), said front surface (40) being made of electrolytic copper. The front surface (40) is joined (52) to said tubes (20, 30) by high-energy density welding, the head is made of a number of head elements each of which consists of a material specifically selected for the respective head element, and said head elements are all joined by high-energy density welding. |
