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从微观上研究了３００Ｍ超高强度铜磨削烧伤特征及烧伤的几种类型，分析了磨削表面烧伤与表面微观形态、表面变质层的关系，提出了避免３００Ｍ超高强度钢磨削烧伤的措施。
From the microscopic point of view, the characteristics of 300M ultra-high strength copper burns and the types of burns were analyzed. The relationship between the burns on the burned surfaces and the microstructure and surface metamorphic layer was analyzed. Measures.