摘要
研究了4枪3 200 kW电子束冷床炉熔铸不同规格铸锭时毛坯表面折层与电子枪功率及液位的关系,明确了折层的形成机理.结果表明,当功率相同时,液位越低毛坯非溢流侧折层越多,液位越高非溢流侧折层最少;当相同液位时,电子枪功率增加折层减少,1 080 mm宽结晶器熔铸时,液面电子枪功率为(350±10)kW且液位与溢流口平齐时,毛坯折层少,熔铸耗能最低;1 280 mm宽结晶器熔铸时,液面电子枪功率为(380±10)kW且液位与溢流口平齐时,毛坯折层少,熔铸耗能最低.结晶器宽幅增加,保证较少折层的电子枪功率密度降低.
Abstract
The relationship between the folded layer of blank surface of ingots with different dimensions and power or liquid level of electron gun in the 3 200 kW electron beam cold bed furnace smelting was investigated,and formation mechanism of folded layer was clarified.The results indicate that with the constant power,the folded layer amounts at non-overflow side of the blank are increased with the increase of liquid level.Under the common liquid level,the power of electron gun is increased and the folded layer is reduced.During the melting of crystallizer with 1 080 mm,the power of electron gun on liquid surface is(350±10)kW,and the blank is less folded and the energy consumption is the lowest when the liquid level is equal to overflow mouth.During the melting of crystallizer with 1 280 mm,the power of electron gun on liquid surface is(380±10)kW,and the blank is less folded and the casting energy consump-tion is the lowest when the liquid level is equal to overflow mouth.The increase in the width of the mold ensures a decrease in the power density of the electron gun with less folding.
基金项目
国家重点研发计划资助项目(2022YFB3705600)
云南省重大科技专项计划资助项目(202002AB080001)
维普
万方数据