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本文在风口导热计算的基础上,对风口熔损的原因、过程进行了分析。对于纯铜风口,得到其极限厚度为40.1mm;对覆层共渗风口,得到渗层的极限厚度为2.9mm。风口的瞬态熔损是在很短的时间发生的,而铁水对风口的冲熔主要是在熔坑处形成凝铁,恶化导热系数而发生的。
Based on the calculation of tuyere thermal conductivity, this paper analyzes the reason and process of tuyere melting loss. For the pure copper tuyere, the ultimate thickness is 40.1 mm; for the coating, the ultimate thickness of the infiltrated layer is 2.9 mm. The instantaneous melting of the tuyere occurs in a very short period of time, while the flushing of the hot metal to the tuyere mainly results in the formation of coagulated iron at the crater, deteriorating the thermal conductivity.