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本文涉及到无坩埚高熔点金属的热处理和区域熔炼所设计的实验冶金装置的有关问题。一只１０千瓦电子束枪用作加热器。该装置仅用低温泵从大气压抽到 １０－１０托的极限真空。井特别注意到对氢的抽气作用。本文还对抽氢效率达１０４升／秒的氦吸附和冷凝低温泵的特性进行了实验。业已发现：吸附泵的液氦耗量是４０～５０厘米３／小时，而对冷凝泵的液氦耗量是 ７厘米３／小时。实践证明，具有冷到２．３Ｋ表面的冷凝泵，其应用似乎是最为有效的。
This article relates to the crucible refractory refractory metal heat treatment and regional metallurgy designed experimental metallurgical equipment related issues. A 10 kW electron beam gun is used as the heater. The unit was pumped from atmospheric to a vacuum of 10-10 torr with a cryogenic pump only. Wells especially note the pumping of hydrogen. This paper also experiments on the characteristics of helium adsorption and condensation cryogenic pump with pumping efficiency up to 104 L / s. It has been found that the liquid helium consumption of the adsorption pump is 40 to 50 cm 3 / hr, whereas the liquid helium consumption of the condensate pump is 7 cm 3 / hr. Practice has proved that with cold to 2.3K surface of the condensate pump, the application seems to be the most effective.