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问题:

>某轧机轧辊直径D=530mm孔型为箱形孔,辊缝S为20.5mm,轧制温度为1120C,轧件轧前尺寸

答案:

解:R= (D-h+S)/2 = (530-173.5+20.5)/2 = 188.5mm