【摘要】 本文通过宏观分析、金相分析和强度计算等方法找出了某公司制造的高铬复合轧辊的断裂原因是该轧辊芯部组织不正常（球化率低，渗碳体数量过高）导致芯部机械性能显著下降不能承受由于轧辊内外温差形成的应力而断裂。更多还原

【Abstract】 Through macro-analysis, micro-analysis and strength calculation the breakage cause of complex high chromium roll is found. The main cause of roll breakage is abnormal microstructure and low mechanical property,it can not carry the stress change caused by inner and outer temperature difference.更多还原