电真空焊料的熔炼

Smelting of the Brazing Materials for Electronics and Vacuum Tubes

清洁性和溅散性是电真焊料的 2个重要性能 ,清洁性是判断焊料内部氧化物夹杂、表面浮渣和黑点的多少 ,而溅散性则是判断焊料内部气体含量的多少。熔炼对这 2个性能的影响有决定性的作用 ,因此选择合适的熔炼工艺对电真空焊料极为重要。文中指出 ,一切减少气体来源的途径 ,都有利于电真空焊料的熔炼 ;

The cleanliness and spatter properties are two key elements of the brazing materials for electronics and vacuum tubes.The cleanliness is measure to judge the amount of the oxide inclusion in brazing materials,the dross and blacks on the surface;the spatter properties is measure to judge the amount of the gas in brazing materials.The smelting process plays decisive role on this two elements.It is very important to chose appropriate smelting procedure.All methods favourable to decreassing the gas source would be advantageous to the smelting of the brazing materials;The repeatedly re-melting under high vacuum condition is important for producing the brazing materials for electronics and vacuum tubes.