本发明提供一种用冷阴极电子束熔炼TA2扁锭的方法，包括以下步骤：A、将常规钛原料块送入电子束冷床熔炼炉内，启动1‑5号EB枪，使冷床内的钛原料块熔融；B、调整6号、7号EB枪的扫描图形，将钛原料块完全熔化至液体；C、将冷床内的熔融液体放入结晶器内，用6号、7号EB枪扫描图形覆盖至整个结晶器；D、调整1‑4号EB枪电流为2‑6A，5号EB枪电流为4‑6A，6‑7号EB电流为2‑4A，以600‑800kg/h的速度进行熔炼、拉锭，冷却后得TA2扁锭。成本低，生产、成材率高，化学成分稳定、表面质量优良。

The invention provides a method for smelting TA2 flat ingot by cold cathode electron beam. The method comprises the following steps of A, feeding a conventional titanium raw material block into an electron beam cold bed smelting furnace, starting an EB gun 1-5, and melting the titanium raw material block in the cold bed; B, adjusting the scanning patterns of EB guns 6 and 7 to completely melt thetitanium raw material block to liquid; C, putting the molten liquid in the cooling bed into a crystallizer, and covering the whole crystallizer with scanning patterns of EB guns 6 and 7; and D, adjusting the current of the EB gun 1-4 to be 2-6 A, adjusting the current of the EB gun 5 to be 4-6 A, adjusting the current of the EB gun 6-7 to be 2-4 A, smelting and ingot drawing at a speed of 600-800kg/h, and cooling to obtain the TA2 flat ingot. The method is low in cost, high in production and yield, stable in chemical composition and excellent in surface quality.