小型冲天炉熔炼球铁的工艺技术

Measures of Smelting Nodular Graphite Iron by Small Cupola

采用小型冲天炉熔炼球铁,易于产生各种缺陷。为提高球铁铸件的质量,进行系统的调查研究,从影响铁液温度的因素及防止方法入手,介绍小型冲天炉熔炼球铁的工艺技术措施。采用热风(或脱湿送风)的双排风口冲天炉,选用干燥的铸造焦,合适的焦炭块度,严格控制底焦高度和送风量等措施,就为生产出优质的球铁件创造了重要的条件。

It is easy to cause various defects while using small cupola to smelt the nodular graphite iron. In order to improve the quality of nodular graphite iron, tthe systematic research was conducted by the present authors for a long time Starting from the factors of affecting liquid iron temperature and preventing methods, the technology measures of small cupola are introduced, which include using the twin-tuyeres cupola by using hot blast （or dehumidification blast t）, selecting the dry foundry coke and controlling the height of coke bed strictly and blast volume et al.. Thus can create important conditions for producing nodular graphite iron casting with high quality.