现场实践发现铸坯角部纵裂产生于结晶器,其主要原因是钢管磨损超标、足辊未对中、结晶器振动不平稳且其冷却水速达不到要求、坯壳与结晶器壁间气隙不均匀,使相邻坯壳厚度不一,在角部产生应力集中,形成角部开裂。采取措施后,纵裂废品大幅度下降。 Field practice found that the corner of the cast slab produced in the mold, the main reason is the excessive wear of steel pipe, foot roller is not in the mold oscillation is not smooth and its cooling water speed not up to the requirements, between the shell and mold wall gas Inhomogeneous gap, so that the thickness of the adjacent blank shells vary in the corner of the stress concentration, the formation of corner cracking. After taking measures, the vertical split waste dropped significantly.