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铅在钢中的溶解度的测定原理,是把溶质(铅)添加至饱和溶解量以上,即当铅的溶解量不随时间而改变时,便达到了饱和点,由此求出溶解度。实验方法如表1所示。用20瓩、400千周的感应炉在氧化镁的坩埚中熔炼各种炭钢、铬钢和不锈钢(各为2公斤),在钢水中加入2%左右的粒状的工业用铅。温度保持在1470～1600℃之间,在铅加入以后的30分钟内,每隔数分钟用直径为5毫米的不透明的石英管取试样。经过多次试验证明,铅加入后
The principle of the determination of the solubility of lead in steel is to add the solute (lead) to the saturated dissolved amount, that is, when the dissolved amount of lead does not change over time, the saturation point is reached, from which the solubility is determined. The experimental method is shown in Table 1. A variety of carbon steels, chrome steels and stainless steels (each 2 kilograms) were smelted in a magnesia crucible with a 20 瓩 and 400 kilowatt induction furnaces, and about 2% of granular industrial lead was added to the molten steel. The temperature was maintained between 1470 and 1600 ° C and the sample was taken every few minutes with an opaque quartz tube 5 mm in diameter within 30 minutes after the lead was added. After many tests proved that after the addition of lead