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磨具批发销售电话 13818083034。
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磨具（Abrasives）是用以磨削、研磨和抛光的工具。大部分的磨具是用磨料加上结合剂制成的人造磨具，也有用天然矿岩直接加工成的天然磨具。磨具除在机械制造和其他金属加工工业中被广泛采用外，还用于粮食加工、造纸工业和陶瓷、玻璃、石材、塑料、橡胶、木材等非金属材料的加工。
分类
固结磨具按所用磨料的不同，可分为普通磨料固结磨具和超硬磨料固结磨具。前者用刚玉和碳化硅等普通磨料，后者用金刚石和立方氮化硼等超硬磨料制成。此外，还有一些特殊品种，如烧结刚玉磨具等。
普通磨料固结磨具是由结合剂将普通磨料固结成一定形状，并具有一定强度的磨具。一般由磨料、结合剂和气孔构成，这三部分常称为固结磨具的三要素。
磨料在磨具中起切削作用。结合剂是把松散的磨料固结成磨具的材料，有无机的和有机的两类。无机结合剂有陶瓷、菱苦土和硅酸钠等；有机的有树脂、橡胶和虫胶等。其中最常用的是陶瓷、树脂和橡胶结合剂。
气孔在磨削时对磨屑起容屑和排屑作用，并可容纳冷却液，有助于磨削热量的散逸。为满足某些特殊加工要求，气孔内还可以浸渍某些填充剂，如硫黄和石蜡等，以改善磨具的使用性能。这种填充剂，也被称为磨具的第四要素。
表示普通磨料固结磨具特征的项目有：形状、尺寸磨料、粒度、硬度、组织和结合剂。磨具硬度是指磨粒在外力作用下，从磨具表面脱落的难易程度，它反映了结合剂把持磨粒的强度。
上海华东磨具批发专家。
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