A diamond grinding cup wheel is a metal-bonded diamond tool with diamond segments welded or cold-pressed on a steel (or other metal, such as aluminum) wheel body, which usually looks like a cup. Diamond grinding cup wheels are usually mounted on concrete grinders to grind abrasive building materials like concrete, granite and marble.
Use
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There are various styles and specifications of diamond grinding cup wheels to fit various application requirements. The ones with many big diamond segments can undertake heavy workloads, for example, grinding concrete and stone, while those with small or sparse diamond segments are normally used for fast removal of paints, wallpapers, glues, epoxy and other surface coatings.
Just like other metal-bonded diamond tools, the diamond segments on diamond grinding cup wheels can have different bonds, different diamond grits, different diamond quality and different diamond concentrations to fit different uses. For example, if the material to be ground is hard, the bond should be softer, and if the material is relatively soft, the bond should be harder.
Diamond grinding cup wheels are used in different-roughness grindings. For coarse grinding, the bond should be softer and the diamonds' quality should be higher, because in this case the diamonds become blunt more easily. The diamond grit should be bigger, normally from 35 grit to 50 grit. For this is coarse grinding and big grit can improve working efficiency. The diamond concentration can be lower.
For fine grinding (sometimes called "polishing"), the bond should be harder and the diamonds' quality can be lower, as in this case the diamonds can last longer and a hard bond can also help the precision of the process. The diamond grit is normally between 80 grit and 120 grit, depending on the grinding requirements. The diamond concentration should be higher.
After being ground, the material can be further polished with resin-bonded diamond polishing pads of different diamond grits.
Manufacturing methods
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There are two common methods to manufacture diamond grinding cup wheels: hot pressing and cold pressing.
The hot pressing method is to directly sinter the diamond segments in molds under a certain pressure in the dedicated sintering press machine, and then fix or connect the diamond segments onto the grinding wheel’s body via high-frequency welding, laser welding or mechanical mosaic method.
The cold pressing method is to first press the working layer (containing diamonds) and the transitive layer (not containing diamonds) of the diamond segments to their forms directly on the grinding wheel's body, and let the segments connect with the wheel's body via teeth, slots or other manners. Then, put the grinding wheels into sintering furnaces to sinter without press.
See also
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References
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CabKing diamond grinding wheels are used for rough grinding and pre-forming stone and glass material. They provide longer grinding life and faster cutting. Wheels come in 6″ and 8″ diameter sizes with a large variety of different grits to choose from.
Our diamond grinding wheels are nickel electroplated using commercial grade diamonds uniformly throughout the entire width of the wheel, making them more durable and aggressive than silicon carbide wheels while giving you excellent quality and results. All wheels are made with a plastic center core, which puts less stress on machine bearings when compared to wheels with steel hubs because they are lighter.
We offer a variety of different grits, ranging from 60 to 600. The 6″ grinding wheels fit the CabKing 6″ cabbing machine and the 8″ grinding wheels fit the CabKing 8″ cabbing machine. You can also use them on other cabbing machine brands. All wheels have 1" arbor holes and come with bushings to accommodate 1/2", 5/8" and 3/4" arbors.
Wheels are 1-1/2" wide