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无前炉冲天炉目前使用很普遍。因此要扩大无前炉冲天炉的使用范围,特别是提高熔化温度和熔化速率,降低焦铁比,提高铁水质量,首先在炉膛选型和改变冲天炉结构方面进行研究和探讨。我厂原来用的1.5吨冲天炉是带有移动式炉缸三排风口普通酸性冲天炉。我厂生产的铸件材质种类多,变换频繁,对化学成分、熔化效率和铁水温度等方面提出了较严格的要求。而原有的冲天炉不能满足,主要表现在: 1.铁水温度低,一般在1360℃左右。这个温度对一些较大的薄壁铸件以及球墨铸铁件是不够的;
No-front cupola is currently used very common. Therefore, it is necessary to expand the scope of use of cupola furnace, in particular, to increase the melting temperature and melting rate, reduce the iron and iron ratio, improve the quality of hot metal, the first in the selection of furnace and change the structure of the cupola to conduct research and discussion. The original 1.5-ton cupola used in our factory is an ordinary acid cupola with three rows of vents. The castings produced by our factory have many kinds of materials and their transformations are frequent. They put forward more stringent requirements on the chemical composition, melting efficiency and hot metal temperature. The original cupola can not meet the main performance: 1. Hot metal temperature is low, generally about 1360 ℃. This temperature is not enough for some of the larger thin castings and ductile castings;