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以双联熔制法制出的白口铁,制成断面15×15公厘的试棒,放在以气化钡和硼砂组成的盐浴中进行退火试验,结果第一阶段的墨化作用,仅需30分钟;而在一般的退火中,为了完成第一阶段的墨化作用,至少需要3至15小时。为了研究液体介质对第一阶段墨化的加速作用计,曾将铸件置於液体介质中或炉中,热到1000℃,并比较其加热速率。在炉中加热时,铸件外周不加填充物;或装在匣内,四周加填充物。为此,曾取40公厘及80公厘的小球,球上设有小孔,用来测量其距离表面1/4或1/2直径深处的温度,并用不同的方法加热:——在加热到1000℃
The white iron made by the double melting method was used to make a 15 × 15 mm section test rod and annealed in a salt bath consisting of barium and borax gasification. The results showed that in the first stage, In just 30 minutes; whereas in a typical anneal, it takes at least 3 to 15 hours to complete the first stage of inkisation. In order to study the accelerating effect of the liquid medium on the first stage of the inkisation, the castings were placed in a liquid medium or in a furnace, warmed to 1000 ° C, and their heating rates were compared. When heated in the furnace, there is no filler on the periphery of the casting; or in the box with filler around. For this purpose, small balls of 40 mm and 80 mm have been obtained. The ball is provided with small holes to measure the temperature at 1/4 or 1/2 of its diameter from the surface and heated in different ways: Heated to 1000 ° C