球化包芯线熔爆特性研究

Research on Melting Explosion Characteristic of Nodularization Cored Wire

采用人工插入法研究了球化包芯线前端在铁液中的动态熔爆行为,探索了铁液温度和喂丝速度与熔爆深度之间的相关规律。结果表明,在包芯线熔爆过程中,熔爆前端始终存在高浓度镁的蒸发区域。在铁液温度一定的条件下,随着喂丝速度的增大,熔爆深度呈非线性增大。当喂丝速度一定时,随着铁液温度的升高,熔爆深度趋于减少。在实验研究的基础上,建立了铁液温度-喂丝速度-熔爆深度之间的理论预测模型。

The dynamic melting behavior of nodularization core wire front end in molten iron was studied by manual insertion method.The correlation between molten iron temperature and feeding speed and the depth of fusion burst was explored.The results show that there is always a high concentration of magnesium evaporating zone in the front-end of cladding wire.When the temperature of molten iron is fixed,the depth of melting explosion increases nonlinearly with the increase of feeding speed.When the feeding speed is constant,the melting depth tends to decrease with the increase of molten iron temperature.On the basis of experimental research,the theoretical prediction model of molten iron temperature-feeding speed-melting depth is established.