Scab. An imperfection in the form of a shell or veneer, generally attached to the surface by sound metal. It usually has its origin in an ingot defect.
结疤。通常由钢锭缺陷引起的、附着在完好金属表面上的薄壳状或镶片状缺欠。
The composition design, melting process theory and defect control on cast ingot of Aluminium standard sample were described in this paper.
阐述了铝块状光谱标样的成分设计、标样熔炼工艺理论及铝标样铸锭缺陷的控制。
Advantages: it can destroy the ingot casting, steel grain refinement, and eliminating the defect in microstructure, thus making steel tissue close-grained, with improved mechanical properties.
优点：可以破坏钢锭的铸造组织，细化钢材的晶粒，并消除显微组织的缺陷，从而使钢材组织密实，力学性能得到改善。
Advantages: it can destroy the ingot casting, steel grain refinement, and eliminating the defect in microstructure, thus making steel tissue close-grained, with improved mechanical properties.
优点：可以破坏钢锭的铸造组织，细化钢材的晶粒，并消除显微组织的缺陷，从而使钢材组织密实，力学性能得到改善。
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