The reason of roll fracture has been analyzed by means of chemical composition analysis, macro fractograph, low magnification structure and microstructure examination.
采用化学成分、宏观断口、低倍组织及金相组织等分析方法对轧辊断裂原因进行了分析。
The rate of nomal fracture is keeped about 97% by optimizing roll gap shrinkage and strengthening management of second cooling and Fan-paragraph, according to now level of casting machine.
并根据连铸机现状水平，采取优化辊缝收缩方案、加强二冷系统和扇形段的管理，使得高强船板断口合格率稳定在97%左右。
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