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Technical Guides
The Application of Diamond Grinding Cup Wheel
Apr 30 , 2021

Diamond Grinding Cup Wheel


A diamond grinding cup wheel is a metal bond diamond tool with diamond segments welded or cold pressed on a wheel, usually looks like a cup. They are very popular for cutting, grinding and polishing concrete, terrazzo, marble, granite, stones, and coating removal. They have a wide range of benefits from simple clean-up to grinding and polishing of concrete and terrazzo surfaces.


Diamond grinding cup wheels are available in a wide variety of sizes and shapes. And they have different diamond grits, different bonds, different diamond hardness and different diamond concentrations to fit different uses. For example, if grinding the hard concrete, the bond should be softer, and if the concrete is relatively soft, the bond should be harder.


There are various styles and specifications of diamond grinding cup wheels to fit for various application requirements. When deciding what kind of diamond cup wheels should be adopted in your job, you should first examine the job you are going to perform. The ones with big diamond segments can undertake heavy workload such as grinding concrete and terrazzo, while the ones with sparse diamond segments are often used for epoxy coatings, paints, glues and other surface coatings.


Diamond grinding cup wheels are used in different roughness grindings. There are normally two steps in concrete grinding. The first is coarse grinding and the second is fine grinding.  For coarse grinding, the diamond bond should be softer and the diamond hardness should be higher since the diamonds are easy to become blunt. The diamond grit should be smaller and the diamond concentration should be lower. For fine grinding or polishing, the bond should be harder and the diamond hardness can be softer since the diamonds can last longer and hard bond can also help the precision of the processing. The diamond grit should be bigger and the diamond concentration should be higher.


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