The effecting factors of grinding field temperature were analyzed. The law of roller surface layer 's temperature was researched.
系统分析了影响磨削区温度的因素，探讨磨削轧辊表层温度的分布规律。
The hardness and depth of chill layer on the roller outer surface can be raised with adding trace Bi into liquid Fe in centrifugal casting.
离心铸造时在铁水中加入微量的铋，可以提高滚筒外壳冷硬层的硬度和深度。
The hardness and depth of chill layer on the roller outer surface can be raised with adding trace Bi into liquid Fe in centrifugal casting.
离心铸造时在铁水中加入微量的铋，可以提高滚筒外壳冷硬层的硬度和深度。
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