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<div> 可能有些Z知道什么是氧化皮，其实氧化皮是在高温情况下被氧化Ş成的一U腐蚀产物Q主要由氧化亚铁、三氧化二铁和四氧化三铁l成。这三种物质的作用分别是Q氧化冶铁的l构比较松，因此提供很弱的保护作用。而三氧化二铁和四氧化三铁{有很精密的l构Q保护效果较强。在机械作用下，氧化皮很Ҏ出现龟裂。实际在数控数控切割加工中，我们是需要对金属有一定了解的Q不单单要求金属的单一性，同时寚w属表面也有一定的要求。而数控加工，在刀具上不存在限Ӟ断面qxQ适合异性工件加工?/div>
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