CBN Grinding Wheels Manufacturers
Cubic Boron Nitride Grinding Wheels
- High Temperature Resistance
- Good ThermalStability
- Long Life
- Not Easy to React With Iron Group Elements
Various Binders Such as Resin, Metal, Electroplated, Vitrified, etc
Product
CBN grinding wheel is composed of CBN （cubic boron nitride）abrasive, bonding agent, and matrix.It can effectively grind workpieces containing iron elements.
CBN abrasive features high temperature resistance and good thermal stability, which can withstand high temperature of 1250-1350℃. CBN has strong chemical inertness and is not easily reactive with iron group elements.Bonding agent include metal bond, resin bond, vitrified bond, electroplated, brazed, and hybrid.
4 Types of CBN wheels Matrix :
With poor seismic resistance, aluminum matrix has excellent heat dissipation performance and mechanical strength.
The aluminum alloy matrix has moderate vibration resistance, good heat dissipation performance, and good mechanical strength.
The synthetic resin matrix has good vibration resistance, poor heat dissipation performance, and good mechanical strength.
The steel matrix has poor vibration resistance, excellent heat dissipation performance and mechanical strength.
Application of Borazon Grinding Wheels
It is very suitable for grinding various materials with high temperature, high hardness, and low thermal conductivity, such as high-speed steel, tool steel, mold steel, high alloy quenched steel, chromium steel, nickel alloy, powder metallurgy steel, and high-temperature alloy. When processing the above-mentioned iron group element materials, the life is 3-5 times longer than that of diamond grinding wheel.
Catagories of CBN Wheels:
Mainly types according to the binder, manufaturing technology and abrasive
Types of CBN Grinding Wheels
Single layer CBN Grinding Wheels
This type of grinding wheel is made by electroplating or brazing a layer of CBN abrasive on a steel substrate, mainly used in rough machining with less strict geometric tolerances.
- The initial cost is lower than that of multi-layer CBN grinding wheels (although the average cost of multi-layer grinding wheels is lower in the end).
- Machine tools can be designed to be simpler, without the need for trimmers, balancers, or drivers with different grinding wheel speed.
- Some rough machining in the previous process can be omitted and can be directly ground with electroplated CBN grinding wheel.
- The grinding efficiency is higher than the traditional grinding wheel.
- The substrate of the grinding wheel can be reused multiple times, thereby reducing costs.
Multi Layer CBN Grinding Wheels
It is made of iron and aluminum alloys as a matrix, with multiple layers of CBN abrasive embedded on it. It mainly includes resin bond, metal bond , vitrified bond , and hybrid bond .Cubic boron nitride wheel is mainly used in high-precision grinding technology.
Resin bond Borazon wheel has good sharpness and self sharpening, and can be used for precision grinding.
Vitrified bond Borazon wheel has good sharpness, good self sharpening, good shape retention, and long life.
Metal bond Borazon wheel has a good life, and can be used for high-strength grinding.
Hybrid bond Borazon wheel refers to two types of bonding agents bonded together by sintering technology, such as metal-resin bond CBN wheel and vitrified-metal CBN wheel.
Dressing for CBN Grinding Wheels
Single Layer CBN wheels (electroplated and vacuum brazed)
This kind of CBN grinding wheel is already in a usable state when purchased, and the particles are exposed between 30% or 80% of the bonding agent. Because there is only a single layer of CBN abrasive, it cannot be dressed. But we can still scrape and grind it to lower the higher particles to obtain better surface roughness quality. But this did not make the particles sharper, instead increasing the force required for grinding.
Multi Layer CBN Wheels( resin, metal, and vitrified bond)
After manufacturing CBN grinding, the grinding particles do not protrude, so we need to do dress it first, and then use it. After dressing, the particles should be exposed by 20% or 30%.
Performance comparison chart of bonding agent for diamond and CBN grinding wheels
Type of Binder | Self-Sharpening | Sharpness | Life | Dressing Difficulty | Price |
Metal | |||||
Resin | |||||
Vitrified | |||||
Electroplated | |||||
Metal-Resin |
Table of grinding objects of diamond VS CBN grinding wheels
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