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一、前言上部单烧咀均热炉,是目前国内外最为流行的炉型,颇受欢迎,具有结构简单、耐火材料消耗少、土方量小、上马快、基建和维修费用低等一系列优点。但是,国内各初轧厂的这类均热炉较为普遍的问题,是炉膛两端的温差较大。我厂11～13号炉由于厂房条件的限制,炉坑尺寸为7600×2700×4100毫米;炉子的长宽比高达2.8,致使温差更加悬殊,而且对烧咀的左右偏斜异常敏感。从而造成高温端被加热锭大面积烧化,炉底增高速度快而不均等一系列缺点,尤余在后期炉底不平阶段,使每炉钢锭不能一次轧出,有时甚至用钳吊移动余下的低温钢锭位置,再继续加热。这样一来,使生产的节奏性遇到严
I. Introduction The upper single-burner soaking furnace is currently the most popular furnace at home and abroad, popular, with a simple structure, low consumption of refractory materials, earthwork is small, quick start, infrastructure and maintenance costs low and a series of advantages . However, this kind of soaking furnace in the domestic initial rolling mill is a more common problem, which is that the temperature difference between the two ends of the furnace is larger. Because of the restriction of factory conditions, the furnace pit size is 7600 × 2700 × 4100 mm; the aspect ratio of the furnace is as high as 2.8, causing the temperature difference to be even more disparities, and it is extremely sensitive to the left and right deflection of the burning nozzle. Resulting in a large number of high-temperature end of the heating block is burned, the furnace bottom increases quickly and unequal series of shortcomings, especially in the late furnace uneven stage, so that each furnace ingot can not be rolled out, and sometimes even with the clamp hanging move the remaining low temperature Ingot position, then continue to heat. As a result, the rhythm of production has been severely hampered