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前言常规热酸冲洗法,对于判断一般小规格、小面积、缺陷不严重的钢坯和钢材低倍组织结构是完全可行的,但是对于低倍组织缺陷严重的钢坯,尤其是大规格、大断面的钢锭和钢坯,尽管重复多次的冲洗,仍然保证不了低倍组织及缺陷清晰暴露。特别是08F、A_3F等沸腾钢钢锭的解剖试验,用常规热酸侵蚀法冲洗,无法得到清晰的低倍组织,影响了试验工作的开展。原因是沸腾钢钢锭,存在大量的孔洞、疏松和偏析等缺陷,热酸侵蚀后内部存有大量的污物(油、酸、碱、
Preface Conventional hot acid washing method is quite feasible for judging the microstructure of steel billet and steel with small size, small area and lack of defects. However, for billets with low microstructure defects, especially for large size and large size Ingot and billet, despite repeated multiple flushing, still can not guarantee a clear exposure to low magnification tissue and defects. In particular, 08F, A_3F boiled steel ingot anatomical test, with conventional hot acid etching rinse, can not get a clear low magnification, affecting the test work. The reason is that there are lots of holes, looseness and segregation in the ingot of ingot steel. There is a lot of dirt (oil, acid, alkali,