我所(以前是工學實驗館)於1951年底即着手進行純鎂加入方法的研究,在1952年1月初曾作实地試驗:其法係用兩端封閉的7.5厘米径石墨管,下端鑽有0.3厘米的小孔4—6个,管內裝約约1.25—1.50厘米大小的鎂塊,壓入鐵液內,經三次試驗後,發現因管壁過厚,管內發生的鎂蒸汽压力小於鐵液的壓力,故鎂蒸汽不能進入鐵液,若將管壁减薄,則强度不够。 At the end of 1951, I (formerly Laboratory of Engineering and Science) started the study on the method of adding pure magnesium. In January 1952, I conducted a field test: its method was to use a 7.5 cm diameter graphite tube closed at both ends and drilled 0.3 cm holes 4-6, the tube containing about 1.25-1.50 cm in size magnesium block, pressed into the molten iron, after three tests and found that due to the tube wall is too thick, the magnesium vapor pressure in the tube is less than The pressure of molten iron, so magnesium vapor can not enter the molten iron, if the wall thinning, the strength is not enough.