材料期刊网

电子束冷床炉熔炼是目前较先进的钛及钛合金熔炼技术，是生产大型优质钛锭的重要熔炼方式。本研究采用颗粒状海绵钛为原料，以垂直进料的方式熔炼大型纯钛扁锭，对电子束冷床炉熔炼区、精炼区、结晶器的4支电子枪工艺参数的设置进行了分析并制定了电子枪工艺参数。通过为期1个月的纯钛扁锭熔炼试验验证，结果表明，制定的工艺参数能够稳定生产纯钛铸锭，且熔炼速度可稳定在1500 kg／h，挥发损失控制在3％以内，铸锭表面质量良好，化学成分均匀，成品率提高，有效降低了熔炼成本。

Electron beam cold hearth melting is the relatively advanced technology for titanium and titanium alloy melting, and also an important way to melt large titanium ingot with good quality .Large pure titanium ingot was melted with vertically feeding method , using titanium sponge granular as raw materials .Then process parameters of four elctron guns in melting zone , zone refining and mould of electron beam cold hearth melting were analyzed and formulated.After one month’s test, the results show that the parameters are stable , melting speed can be stable with 1 500 kg/h, the volatilization rate can be controlled in less than 3%, the surface quality of the ingot is good , the chemical composition is uniform , the yield is increased and the cost is reduced .