Through accident investigation and analysis on fracture characteristics of work roll,spalling from barrel internal thread-like crack was found.
英
美
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通過(guò)對某廠(chǎng)1700冷連軋機工作輥剝落事故進(jìn)行調查和斷口特征分析,發(fā)現該軋機工作輥出現由工作輥內部線(xiàn)狀開(kāi)裂引起的剝落;
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国内精品美女A∨在线播放xuan