How To Choose Diamond And CBN Grinding Wheel Correctly


SDC grinding wheel (diamond), when grinding and cutting iron materials, will not appear sticky chips, and is ideal for grinding hardened steel, high-vanadium high-speed steel, aluminum high-speed steel and other metal materials that are sensitive to grinding temperature Grinding wheel.

CBN grinding wheel (cubic boron nitride) is mainly used for grinding hard and tough materials, and cannot replace diamond SDC grinding wheel for grinding cemented carbide and non-metallic hard materials. When grinding, only oil-based coolant can be used instead of water-based coolant. Because, at high grinding temperature, CBN will react chemically when it encounters alkaline aqueous solution. CBN grinding wheel will decompose in alkaline solution at 300 ℃, and can decompose in a small amount in boiling water. As a result, the crystal shape of abrasive grains will be destroyed.

1. Different heat resistance:
CBN grinding wheel (cubic boron nitride) can withstand high temperature of 1250-1350 degrees Celsius.
SDC grinding wheel (diamond) heat resistance up to 800 degrees Celsius.
2. Different uses:
CBN grinding wheels are mainly used for processing hard and tough materials, especially ferrous metals, such as various steels
parts, cast iron, etc., workpieces: auto parts - crankshaft, camshaft, etc., hydraulic parts, compressor parts
SDC grinding wheels are mainly used for processing hard and brittle materials, such as: cemented carbide, ceramics, glass
3. The cost is different:
In terms of production cost, the price of CBN grinding wheel is much higher than that of SDC grinding wheel.
Diamond grinding wheels are superior to CBN grinding wheels if the workpiece allows.


In short, CBN grinding wheel and SDC grinding wheel belong to superhard grinding wheel, and the scope of application of the two grinding wheels complements each other. The toughness, hardness and durability of the abrasive are tens or hundreds of times that of corundum grinding wheels. The actual selection still needs to be considered according to the equipment, workpiece, processing method, operation and actual demand!

Zhengzhou Ruizuan provides you with professional diamond and CBN tools, our tools are used in many different industries. Our customers find good applications in the woodworking, metalworking, automotive, stone, glass, gemstone, technical ceramics, oil and gas drilling, and construction industries. In these industries, our products perform well in terms of long life, high efficiency and low unit cost. I think you will be so too........

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Source: Abrasives Institute

Post time: Mar-08-2023