近几年，随着国内高附加值产品的开发，连铸坯的内在质量显著改善，为适应连铸工艺和改进，实验室连铸坯低倍检验除评定一般疏松、裂纹、偏析、气泡等缺陷外，还开始检测连铸坯铸态树枝晶结构。本文对连铸坯的各种检测方法进行了详细的分析和比较。
In recent years ,with exploitation of high technology addiction ,slab quality has been improved outstandingly, for adapting technics of Continuous casting slab improved ,except testing crack、Etch test method for macrostructure and defect of continuous casting slab in laboratory，And begin to test Dendritical shape of continuous casting slab . the paper analysis and compare the whole bag of tricks working of Etch test method .
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