在本研究中,对鞍钢股份有限公司生产的300mm Q690NHH铸坯进行低倍组织观察,可以看出,沿铸坯宽度方向进行组织观察,无较明显的偏析、裂纹、缩孔等缺陷,铸坯质量良好。
In this study, the macrostructure of 300mm Q690NHH cast slab produced by Anshan Iron and Steel Co., Ltd. was observed. It can be seen that the structure observation along the width direction of the cast slab showed no obvious segregation, cracks, shrinkage and other defects. The quality is good.