Centerless Cylindrical CBN Grinding Wheel Diamond Surface Hard

CBN Diamond Centerless Cylindrical Grinding Wheel Surface Grinding Wheel

CBN grinding wheel

CBN (cubic boron nitride) abrasives are used as raw materials, and metal powder, resin powder, ceramic and electroplated metal are used as bonding agents to make various shapes of products for grinding, polishing and abrasive tools called CBN abrasives. CBN has more advantages in processing ferrous metals than diamond grinding wheels.

CBN is harder than other common abrasives when used as an abrasive material. High hardness means better cutting ability and sharper; CBN has high wear resistance, which means it is resistant to abrasion; the ability to keep the shape of abrasive grains is one of the main characteristics of CBN as super hard abrasive; CBN has high compressive strength. It is suitable for processing high-speed steel, tool steel, die steel, powder metallurgy steel, etc.

CBN has a higher hardness than ordinary abrasives. High hardness means stronger and sharper cutting ability; CBN has high wear resistance, which means it is harder to wear than ordinary abrasives; the ability to maintain the shape of abrasive grains is one of the main characteristics of CBN as a high-performance abrasive; CBN has high compressive strength, which means it can keep the grains intact and not easy to break when used under harsh conditions; CBN has good thermal conductivity, which enables cold cutting during grinding.

1,High hardness, high toughness
High hardness and high toughness cubic boron nitride (CBN) is a super hard material second only to diamond in hardness synthesized by human beings, which is much higher than ordinary corundum and silicon carbide abrasives, thus having better cutting ability and more sharpness.
2, high temperature resistance, good thermal stability
Cube boron nitride can withstand high temperature of 1250-1350 degrees Celsius, higher than diamond's heat resistance of 800 degrees Celsius; when grinding and cutting ferrous materials, no sticky chip phenomenon will occur, and it is the ideal grinding wheel for grinding quenched steel, high vanadium high-speed steel, aluminum high-speed steel and other metal materials that are sensitive to grinding temperature.
3,Strong chemical inertness
Cube boron nitride is not easy to react chemically with iron group elements, so it is very suitable for grinding materials with high temperature, high hardness and low thermal conductivity, such as various high-speed steels, tool steels, die steels, high-alloy hardened steels, chrome steels, nickel alloys, powder metallurgical steels and high-temperature alloys.
4,Good thermal conductivity
The thermal conductivity of CBN can be tens to hundreds of times that of corundum grinding wheels, thus enabling the rapid export of grinding heat and reducing the thermal deformation of the workpiece. It is very suitable for grinding of materials with low thermal conductivity. Various spraying (welding) materials: nickel-based, iron-based, etc.; wear-resistant cast iron materials: vanadium-titanium cast iron, high-phosphorus cast iron, chilled cast iron, etc.; titanium alloys: such as TC4, etc.
5,Good grinding performance and processing surface quality
Because the cubic boron nitride abrasives can maintain the sharpness of the micro-edges of the abrasive grains for a long time, the machining accuracy and surface roughness of the machined workpiece will reach a more ideal effect, so the durability of the workpiece can be increased by 10%-30%. CBN grinding wheel can obtain high dimensional accuracy and low surface roughness, the machined surface is not easy to produce cracks and burns, and the residual stress is small. The quality of the machined surface is improved, generally without cracks and burns, and residual compressive stress can be obtained, which significantly improves the fatigue strength of the workpiece, and usually, the durability of the workpiece being ground can be increased by 30-50%.
6. Strong wear resistance and long life
The grinding ratio of CBN grinding wheel can reach 3500-5500, which is 100 times higher than ordinary corundum grinding wheel and 3-5 times higher than diamond grinding wheel.
7,Environmental protection and no pollution, energy saving and consumption reduction
No too much powder dust.
8,High working efficiency and good comprehensive economic benefits
Sharp grinding, small grinding force, long dressing cycle of CBN grinding wheel, less dressing volume, long replacement time; long service life, high grinding ratio, better economy can be obtained, good shape retention in use, no need to change grinding wheels and dressing wheels frequently, saving working hours, improving labor conditions and facilitating processing operations.

CBN Diamond Centerless Cylindrical Grinding Wheel Surface Grinding Wheel