CAJ | 학술논문

通过自行设计和搭建的钢坯富氧燃烧小型加热炉，研究了不同富氧体积分数条件下，钢坯的氧化烧损率、燃料消耗量、试样钢坯加热时间的变化规律及钢坯氧化程度随温度变化的规律，当氧体积分数为36%时，钢坯氧化烧损降低约37%，燃料节约26%；富氧燃烧缩短钢坯在高温区的停留时间，因此节约了燃料，降低钢坯的氧化烧损，SEM、XRD分析结果表明：富氧使氧化铁皮中Fe3O4层增厚，阻碍了氧的扩散，减少了钢坯的氧化烧损，且当钢坯的中心温度在1,100,℃以上时，富氧燃烧对减少钢坯的氧化烧损有显著作用；影响钢坯氧化烧损因素的强弱顺序依次为加热时间、氧体积分数和炉气温度。
통과자행설계화탑건적강배부양연소소형가열로，연구료불동부양체적분수조건하，강배적양화소손솔、연료소모량、시양강배가열시간적변화규률급강배양화정도수온도변화적규률，당양체적분수위36%시，강배양화소손강저약37%，연료절약26%；부양연소축단강배재고온구적정류시간，인차절약료연료，강저강배적양화소손，SEM、XRD분석결과표명：부양사양화철피중Fe3O4층증후，조애료양적확산，감소료강배적양화소손，차당강배적중심온도재1,100,℃이상시，부양연소대감소강배적양화소손유현저작용；영향강배양화소손인소적강약순서의차위가열시간、양체적분수화로기온도。
An experimental-scale heating furnace system was designed to study the oxide scale of steel slab under oxygen-enrichment combustion. Several factors,including heating time,oxygen content and temperature,were investigated,and the structure of oxides formed on the slab was characterized. When the oxygen concentration was 36%,the oxidation loss of billet was reduced by approximately 37% and 26% of the fuel was saved because of the decreased heating time. The results show that the magnetite film formed on the slab increases in thickness with oxygen enrichment by SEM and XRD,thus restricting the diffusion of oxygen,because of which the rate of oxide scale decreases. Oxygen-fuel combustion has significant influence on the reduction of oxide scale when the slab is heated to more than 1,100,℃ in the center. Heating time has the greatest contributions to the increase of oxide scale,followed by oxygen content and furnace gas temperature.