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除了切头金属损耗大外,用有粘土砖保温帽的上大下小钢锭模浇注的钢锭的致命缺点是由于整模不细心,保温帽和锭身接触处的台基小及涂油燃烧物进入钢水内引起的钢锭悬挂所造成的表面裂纹。上部用粘土砖衬里的上小下大无底钢锭模浇注的钢锭的横裂纹要少些。马格尼特哥尔斯克钢铁公司多年来用这种钢锭模已浇注了大量的低碳钢,特别是有裂纹倾向的低碳钢。
In addition to the large metal head loss, the deadly disadvantage of the steel ingot cast on a large steel ingot mold with a clay brick insulation cap is due to the fact that the mold is not careful, the base of the thermal cap and the body at the contact point is small, Into the molten steel caused by hanging steel ingot caused by surface cracks. Upper clay brick lining on the small big bottomless steel ingot pouring ingot transverse crack less. Magnitogorsk Steel has used this type of ingot mold for many years to pour large quantities of mild steel, especially mild steel with a tendency to crack.