heat conversion factors

Some measures have been taken to prolong tapping hole life greatly such as optimizing heat exchange process,changing the structure of tapping hole,improving properties of fettling materials and decreasing tapping temperature and so on.

通过采取优化出钢口热换工艺、改变出钢口结构材质、优化补炉料性能、降低出钢温度等措施,提高出钢口寿命。