Xinxiang New Zuan Diamond Tools Co.,Ltd
Address: 18# Building, Jingu Oriental Plazza,No.1 Jinsui Road, Xinxiang 453000, China
Tel: +8618003823130

Difference Between Diamond Grinding Wheel And CBN Wheel

  Difference between diamond grinding wheel and CBN wheel

  Cubic boron nitride (CBN) is the hardness of human synthesis after diamond, and much higher than ordinary corundum and sic abrasive superhard materials.

  Its high hardness, high toughness characteristics, making its cutting capacity is stronger, sharper, more difficult to wear.

  The grinding ratio of CBN grinding wheel is up to 3500-5500, which is higher than that of ordinary corundum grinding wheel. The CBN grinding Wheel can obtain high dimension precision and low surface roughness, and the machined surface is not easy to produce crack and burn, and the residual stress is small. The quality of machined surface is improved, the general no crack, not easy to burn, and can obtain residual compressive stress, improve the fatigue strength of workpiece remarkably, usually, the durability of the grinding workpiece can improve $number.

  As one of the main properties of high performance abrasives, CBN has a high compressive strength and good ability to maintain the shape of abrasive grains.

  CBN has a good thermal conductivity, the thermal conductivity of corundum grinding wheel can be up to dozens of times times, so the grinding heat can be rapidly exported, reducing workpiece thermal deformation. It is suitable for grinding material with low heat conductivity. All kinds of spraying (welding) materials: Nickel base, iron-based, etc. wear-resistant cast iron materials: vanadium-titanium cast iron, high phosphor cast iron, chilled cast iron, etc. titanium alloys: such as TC4. Cold cutting can be achieved in grinding.

  Compared with diamond grinding wheel

  CBN has the characteristics of high temperature resistance and good thermal stability. Cubic boron nitride can withstand a temperature of 1250-1350 degrees Celsius, the heat resistance of diamond is higher than 800 degrees Celsius. In grinding and cutting iron materials, there will be no sticky-chip phenomenon, in the grinding of hardened steel, high vanadium high-speed steel, aluminum high-speed steel and other sensitive to the grinding temperature is the most ideal grinding wheel.

  CBN is also characterized by its strong chemical inertia. Cubic boron nitride is not easy to react with iron-group elements, so can replace the diamond, for a variety of high-speed steel, tool steel, die steel, high alloy hardened steel, chrome, nickel alloy, powder metallurgy steel and high-temperature alloy, such as high temperature, high hardness, low heat conductivity of the material is very suitable for grinding.

  Therefore, in the processing of the above-mentioned iron-group element material, durability is 3-5 times higher than diamond grinding wheel.

  However, cubic boron nitride can not replace diamond grinding wheel grinding hard alloy and non-metallic materials.

  In the grinding, you can only choose oily coolant, but not water-based coolant. Because, in the grinding high-temperature, CBN in alkaline aqueous solution will occur chemical reaction, CBN grinding wheel in 300 Shan alkaline solution will be decomposed, in boiling water can be broken down, the result will be the grinding grain crystal shape destroyed,

  CBN (cubic boron nitride) grinding wheel is the grinding wheel made of cubic boron nitride as abrasive, its structure, fabrication process and so on are basically the same as diamond grinding wheel.