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.
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。
When using the utility model, the pass is cast with a blank roll in one body, therefore ensuring surface hardness of the whole pass to be accorded with the surface hardness of the whole roll.
使用本实用新型，由于孔型是与毛坯辊一体铸造出来的，保 证了整个孔型表面的硬度与整个轧辊表面硬度一致。
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