There are some longitudinal surface cracks appear on the continuous casting slab and consequently on the rolling steel plate.
在连铸轧制的钢板表面有沿轧制方向的裂纹。
The longitudinal surface cracks of continuous cast slab results from the thickness inhomogeneity of the initially solidified shell at the meniscus of mould.
连铸板坯表面纵裂起因于结晶器弯月面初生凝固坯壳厚度的不均匀性。
The stress required for producing internal crack decreases since there are loci of cracks in the slab caused by the surface crack, so the longitudinal cracks from inner to surface form easily.
由于铸坯表面裂纹形成的裂纹灶，降低了产生内裂所需要的应力值，易于形成内、外相连的纵裂。
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