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前炉出铁口,一般是焊接一块厚约3～4毫米的钢板,中间开一个圆孔作为出铁口。但常因出铁口处铁水冻结,多次打凿,致使出铁口钢板烧熔,孔口扩大,须更换钢板补焊,这样既浪费工时又不方便。在生产实践中,我们将出铁口钢板改装成为厚约3～4毫米、上大下小的活络梯形钢板,在其中间稍下部烧一个圆出铁口,然后锤成弧形,卡入出铁槽镶边铁空隙中(如图)。修出铁口时必须注意,将耐火泥搪塞钢板与炉壁之间的夹缝中,以免铁水沿夹缝冲出。经若干年来的生产实践证明,每当出铁口烧大不能再用时,便可把活络钢板打掉,换一块不需焊接的钢板,既减少麻烦又节省工时,方便
Front furnace taphole, generally welded a piece of about 3 to 4 mm thick steel plate, the middle of a hole as a taphole. However, often due to the hot iron at the taphole frozen, repeatedly chiseling, resulting in taphole steel melting, orifice expansion, replacement welding steel plate, it is not only a waste of time and inconvenient. In the practice of production, we converted the taphole steel plate into an active trapezoidal steel plate with a thickness of about 3 to 4 mm and a small upper and lower diameter. We burned a round taphole in the lower part of the tundish and then bent into an arc, Groove edge iron gap (Figure). Repair of the iron mouth must pay attention to, will be fire-resistant clay prefabricated steel plate and the furnace wall between the cracks in order to avoid molten iron out along the cracks. After several years of production practice has proved that whenever the taphole burn can not be reused, we can destroy the active plate, for a piece of steel without welding, both to reduce trouble and save working hours, convenient