As a new macro-examination technology on continuous casting steel billet,dendrite etching method has gradually attracted attention from iron and steel enterprises.Based on the application progress,its technology characteristics,the effect on solidification structure and internal defect,and the development status of related detection device are summarized and compared with those by using traditional macro-examination methods.Dendrite etching method not only has the advantages of short etching time and low pollution,but also can clearly present solidification structure and defect in the steel billet,which helps steel enterprises to achieve accurate and real-time evaluation on low magnification quality.The upgrade and development of detection device have solved the problems of long time and difficulty in the specimen preparation stage.Thus,the dendrite etching method can provide a strong technical support for the intelligent development of steel industry.
维普
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