| 摘要 |
The invention relates to a water-cooled lance or probe destined to be inserted into metallurgical furnaces, comprising an inner tube, a concentrical outer tube and a guiding tube arranged between said inner and outer tubes for the formation of a coolant circulation, which lance or probe over part of its circumference and part of its longitudinal extension is exposed to increased heat influence. In the area of increased heat influence, the lance or probe is cooled to a greater degree by increasing the cooling area and the free current cross section there relative to the other parts of the lance or probe. |
