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通过试验分析 ,首次在灰铸铁型材断面上观察到球状石墨的带状区 ,并对这种带状组织及成因进行了分析探讨。结果表明 ,这是一种应当预防和控制的异常组织。
Through experimental analysis, the ribbon shape of spheroidal graphite was observed for the first time on the gray cast iron section, and the ribbon structure and genesis were analyzed. The results show that this is an abnormal tissue that should be prevented and controlled.