半冷硬球铁轧辊辊身硬度不稳定的原因及对策

Reason Causing Unstable body Hardness of Semi-Chilled Nodular Iron Roll and Countermeasures

对半冷硬球铁轧辊辊身硬度低和不稳定的原因进行了分析。对铸型冷却速度、浇注温度、球化率和化学成分对辊身硬度的影响进行了论述,并提出了解决问题的措施。

The reason causing the hardness of body of the semi-chilled nodular iron rolls to be low and unstable was analyzed. The influences of cooling rate of the mould, pouring temperature, nodularity and chemical composition on hardness of roll body were described, and the measures for solve problems were proposed.