上海钢铁工艺技术研究所与大冶钢厂合作,利用大冶钢厂3350制氧机副产品工业氮为原料,采用适量的乙醇配比经60NM~3/h 乙醇转化法制取氮基保护气氛装置制取的氮基保护气氛成份大致是:CO+H_2 1—5%(取决于原料氮气中氧含量),CO_2≤0.05%,O_2≤10ppm,露点≤-60℃,N_2余量。这种“中性”气氛,对于低、中、高碳钢材的少、无氧化,少、无脱碳热处理有广泛的 Shanghai Iron and Steel Technology Institute and Daye Steel, the use of Daye Steel 3350 oxygen plant by-products of industrial nitrogen as raw material, using the appropriate amount of ethanol by 60NM ~ 3 / h ethanol conversion method of nitrogen-based protective atmosphere device The composition of the nitrogen-based protective atmosphere is roughly: 1-5% of CO + H 2 (depending on the oxygen content of the raw material nitrogen), CO 2 ≦ 0.05%, O 2 ≦ 10 ppm, dew point ≦ -60 ° C, N 2 balance. This “neutral” atmosphere, for low, medium and high carbon steel less, no oxidation, less, no decarburization heat treatment is extensive