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| gas source in steel (【技】钢中氢的来源主要有：炉气中的水蒸气、废钢铁表面的铁锈、原材料中的水分、萤石中的化合水和吸附水、炉衬和浇注系统中耐火材料中的水分等。钢中氮的来源主要有：钢液在冶炼和浇注过程中直接从炉气和大气中吸收大量的氮，金属料中带人到钢水中的氮。) | |||
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