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为什么当圆盘造球机的直径和倾角一定时,其转速只能在一定范围内波动?

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纠错
正确答案:

当直径和倾角一定时,如果球盘转速过小,物料提升不到圆盘的顶点,造成母球区空料,使物料和母球向下滑动,使盘面利用率降低,影响产量,还因母球上升的高度不在和积蓄动能少,当母球向下滚动时得不到必要的紧密,生球强度低,相反如果周速过大,离心力过大,盘内的物料就会被甩到盘边,造成盘心空料,使物料和母球不能按粒级分开,甚至造成母球形成过程停止,如果刮板强迫物料下降则会造成急狭窄的料流,严重恶化滚动成型的特性。因此只有适宜的转速才能使物料沿造球盘的工作面滚动,并按粒度分级而有规则地运动。

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