【摘要】 对实际观察到的连铸钢板坯拉出结晶器时的横截面形状与最终形成的内部裂纹进行了理论分析 ,找到了凝固壳横截面形状变化与内部裂纹的形成及种类之间的因果关系及规律性 ,为预防连铸钢板坯内部裂纹提供了理论依据。同时对YB/T 4 0 0 3- 1991标准中的有关问题进行了讨论 ,并从生产工艺角度概述了影响连铸钢板坯内部裂纹的各种因素更多还原

【Abstract】 True shapes of cross section of continuous casting steel slab in the time that slab is just pulled out of crystallizer and formed finally internal cracks are analysed in theory. The relationships and its law between deformation of cross section of coagulating shell and internal cracks are found. It is important to propose the theory basis for preusention of internal cracks. Train of thought is clear and systematic. For these reason, inadeguacys and misunderstanding in standard YB/T 4003-1991 in effect are indicated. Meanwhile, influence factors on internal cracks are summarized from productive technology.更多还原