(8) Grinding Wheel: Definitions & Related Knowledge
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- Parent Category: Knowledge
- Category: Grinding Wheel and Grinding Related Knowledge
- Written by Super User
Grinding Wheel
Definition: The product is made of the combination of mixed abrasive and binder. After compaction, drying and calcination, it will become loose coils, round-shaped and other shapes of abrasive tools.
The grinding wheel is a round bonded abrasive tool made of abrasive and resin binder with a central through-hole. The grinding wheel is the most frequently and widely used tool among the abrasive products. Its high-speed rotation can work on metal or non-metallic workpieces with round, flat, and a variety of surface for rough grinding, semi-fine grinding, grooving and cutting.
The grinding wheel is the most important type among the abrasive products. It has binder added into the abrasives to make a porous body after compaction, drying and calcination.
Due to the differences among abrasive, binder and manufacturing process, the properties of grinding wheel varied a lot, so that the quality, production and economical efficiency of abrasive designing are greatly influenced. The property of abrasive wheel is mainly decided by many factors such as abrasive, grain size, binder, hardness, pattern, shape and dimensions.
Category: The grinding wheels can be classified into average grinding wheels (corundum, carborundum and so on), natural abrasive and extra-hard grinding wheels (diamond, cubic boron nitride and so on) according to the abrasive types;
And straight-type wheels, tapered wheels, cylinder wheels, cup wheels and saucer wheels according to the shape;
And ceramic wheels, resin wheels, rubber wheels and metal wheels according to the binder.
The characteristic parameters of grinding wheel mainly include abrasive, viscosity, hardness, binder, shape, dimension and so on. Since the grinding wheel always works in high speed, a rotating test (ensure that the grinding wheel will not split under high rotating speed) and static balancing test (prevent machine vibration when it starts) are required before using. After a period of functioning, the grinding wheel needs repair and maintainance to restore its grinding properties and correct physical shape.
Property: Grinding wheel is a round bonded abrasive tool with a hole in the center, which is made of abrasives and binder. The properties of grinding wheel are decided by the abrasive, grain size, hardness, binder, shape and dimensions.
[Followings are in Chinese Version]
砂轮是用磨料和结合剂混合经压坯、干燥、焙烧而制成的，疏松的盘状、轮状等各种形状的磨具。
砂轮是用磨料和结合剂树脂等制成的中央有通孔的圆形固结磨具。砂轮是磨具中用量最大、使用面最广的一种，使用时高速旋转，可对金属或非金属工件的外圆、内圆、平面和各种型面等进行粗磨、半精磨和精磨以及开槽和切断等。
砂轮是磨削加工中最主要的一类磨具。砂轮是在磨料中加入结合剂，经压坯、干燥和焙烧而制成的多孔体。
由于磨料、结合剂及制造工艺不同，砂轮的特性差别很大，因此对磨削的加工质量、生产率和经济性有着重要影响。砂轮的特性主要是由磨料、粒度、结合剂、硬度、组织、形状和尺寸等因素决定。
砂轮种类繁多。按所用磨料可分为普通磨料（刚玉和碳化硅等）砂轮和天然磨料超硬磨料和（金刚石和立方氮化硼等）砂轮；按形状可分为平形砂轮、斜边砂轮、筒形砂轮、杯形砂轮、碟形砂轮等；按结合剂可分为陶瓷砂轮、树脂砂轮、橡胶砂轮、金属砂轮等。
砂轮的特性参数主要有磨料、粘度、硬度、结合剂、形状、尺寸等。
由于砂轮通常在高速下工作，因而使用前应进行回转试验（保证砂轮在最高工作转速下，不会破裂）和静平衡试验（防止工作时引起机床振动）。砂轮在工作一段时间后，应进行修整以恢复磨削性能和正确的几何形状。
属性: 砂轮是用磨料和结合剂等制成的中央有通孔的圆形固结磨具。砂轮的特性由磨料、粒度、硬度、结合剂、形状及尺寸等因素来决定。