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使用热流密度低的缓冷型保护渣可缓解包晶钢浇铸过程中因包晶相变导致的表面纵裂纹产生。添加新型助熔剂氧化钴到包晶钢保护渣中,发现保护渣的热流密度下降,且热流密度最低加入量为2%。碱度也是影响保护渣传热性能的重要因素,通过改变含钴保护渣的碱度,研究碱度对含钴保护渣传热性能的影响,发现碱度越高越有利于降低保护渣传热性能,并且碱度也是通过改变含钴包晶钢保护渣的结晶度来影响保护渣的传热性能的。
The use of slow-fluxing mold flux with low heat flux can alleviate the generation of longitudinal longitudinal cracks caused by peritectic transformation in the process of pericardium casting. Add a new type of flux cobalt oxide into the mold steel slag, and found that the flux density of flux decreased, and the lowest heat flux added at 2%. Alkalinity is also an important factor that affects the heat transfer performance of fluxes. By changing the alkalinity of fluxes containing fluxes, the influence of alkalinity on the heat transfer performance of fluxes containing cobalt is studied. The results show that the higher alkalinity is more conducive to reducing the heat transfer of fluxes Performance, and alkalinity is also affected by changing the crystallinity of the mold powder containing slag to affect the heat transfer properties of the flux.