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高碳钢的两大特性，使连铸变得困难起来。一个是对表面及内部裂纹的高度敏感性。现已查明，降低含氮量对改善高碳钢的热态可塑性是非常有效的，即使是在酸溶铝、铌、硼和钒含量较低的情况下也同样有效。此外，还发现了添加钙能有效减少内部裂纹的敏感性。采取上述防范措施之后，角裂及内部裂纹已明显减少了。高碳钢板坯连铸的另一问题是由于浇注温度低、浇注速度低而造成的保护渣不均匀熔化，从而使板坯表面出现夹渣和气孔。基于这一点，我们已开发了能均匀熔化并为弯月面供热的放热型保护渣。结果，表面夹渣和气孔都减少了。
Two major features of high carbon steel, making continuous casting difficult. One is the high sensitivity to surface and internal cracks. It has been found that reducing the nitrogen content is very effective in improving the hot plasticity of high carbon steels, even at low levels of soluble aluminum, niobium, boron and vanadium. In addition, it was found that the addition of calcium can effectively reduce the internal crack sensitivity. After taking the precautionary measures mentioned above, the angle cracks and internal cracks have been significantly reduced. Another problem of continuous casting of high-carbon steel slab is the uneven melting of the mold powder caused by the low pouring temperature and low pouring speed, so that slag and pores are formed on the slab surface. Based on this, we have developed exothermic mold fluxes that melt evenly and supply the meniscus. As a result, surface inclusions and porosity are reduced.