200/230 Cubic Boron Nitride Powder Grade CBN A40 For Electroplated

Gold Amber 200/230 CBN Cubic Boron Nitride wear resistant

Description:

It is recognized that CBN (cubic boron nitride) is second only to diamond in hardness, two times that of diamond in high temperature resistance, four times that of traditional abrasive in wear resistance, and have extraordinary thermal conductivity. There are hundreds of raw materials needed to use CBN to grind in present manufacturing market, from aerospace superalloys and thermal spraying to the hardened steel in automotive bearing and gear industry to improve efficiency and get the shortest processing time. Components and spare parts can get better quality by CBN grinding. Products are optimized to prevent thermal damage during the finishing process. At the same time, the quality consistency of the machined parts is improved. These machining technologies make full use of CBN advantages of increase grinding wheel life and wear reduction. So that the expensive machine can run longer time between the grinding tool replacements and reduce the adjustment time during operation to better meet the requirement of modern automated machine and improve productivity and work efficiency.

There are two types of cubic boron nitride, single crystal and polycrystalline sintered body. The single crystal is made of hexagonal boron nitride and catalyst at a pressure of 3000-8000 MPa and a temperature of 800-1900°C. Typical catalyst materials are selected from alkali metals, alkaline earth metals, tin, lead, antimony and their nitrides. The crystal forms of cubic boron nitride include tetrahedral truncated cones, octahedrons, crooked crystals and twin crystals. Industrial cubic boron nitride has black, amber, and metal-plated surfaces, and the particle size is usually less than 1 mm. It has better thermal stability than diamond and chemical inertness to iron group metals. The abrasive tools used to manufacture are suitable for processing hard and tough materials, such as high-speed steel, tool steel, die steel, bearing steel, nickel and Cobalt-based alloy, chilled cast iron, etc. When grinding steel with cubic boron nitride abrasive tools, most of them can obtain high grinding ratio and processed surface quality.

cBN Series Mesh Size Available:

cBN Series Micron Size Available:

Abrasive Materials Mesh Size Comparison List

cBN Mesh & Micron Series

- cBN B10
Black color, irregular sharp, low toughness but good self sharpen ability, easily fractured monocrystalline. Widely used for resin bond systems and low temperature grinding.

- cBN B20
Black color, monocrystalline, semi-blocky, high toughness and thermal stability. Usually used for vitrified bond and metal bond, maintaining grinding performance and tool life.

- cBN B30
Black, semi-tough, irregular, angular sharps provide increased grinding efficiency in resin or vitrified bond systems.

- cBN A40
Gold color, blocky, very tough and extremely high thermal stability. Used in metal bond systems and electroplated tools.

- cBN A50
Dark brown, irregular monocrystalline with sharp edge, tough and high thermal stability. Used in vitrified and metal bond systems, also used in heavy-duty resin bonds.

- cBN A60
Dark brown, blocky, very tough and high thermal stability. Widely used in metal bonds and electroplated tools.

- cBN A70
Gold in color, blocky, tough and high thermal stability. Widely used in metal bond and electroplated tools, better choice for hardened tool steel, cobalt-based alloys and super cobalt alloy.

- cBN A80
cBN80 series is our highest leval of cBN powder with high strength, high toughness, high stability and recommended for vitrified bond cBN grinding wheels processing auto camshaft and crankshaft, which is especially suitable for production of PCBN and cBN sintered body.

- CBN A80M Micron Size

A80M is now the higher level of CBN powder in China, with high toughness, high stability, which is the best choice for vitrified bond CBN grinding wheel processing aturo camshaft and crankshaft. Therefore, A80M has strong grinding force and much better stability than other CBN micronpowder. The cleanliness of the surface through special processing is especially suitable for the production of PCBN and CBN sintered body.

Main Application of Harmony CBN Powder

The grinding performance of cubic boron nitride abrasive tools is very excellent, not only capable of processing difficult-to-grind materials, improving productivity, but also conducive to strict control of the shape and dimensional accuracy of the workpiece, but also effectively improving the grinding quality of the workpiece and significantly improving The surface integrity of the workpiece after grinding, thus improving the fatigue strength of the parts, prolonging the service life, and increasing the reliability. In addition, the cubic boron nitride abrasive production process is better than ordinary abrasive production in terms of energy consumption and environmental pollution. Therefore, expanding the production and application of cubic boron nitride abrasive tools is an inevitable trend in the development of machinery industry.
- Sharpening and rough grinding of tools containing tungsten, tungsten and molybdenum and other high-speed steels, especially vanadium alloy steel, cobalt alloy steel, and special high-speed steel tools.
- Fine grinding and final grinding of precision parts made of heat-resistant steel, stainless steel and high-hardness alloy structural steel. When these parts are used with ordinary abrasive tools, high accuracy cannot be obtained due to abrasive tool consumption or blunt grinding too fast.
- Grinding of various material parts sensitive to local thermal stress and thermal shock.
- Fine grinding and final grinding of large precision workpieces (machine tool guide rails, high-precision machine tool screws). These workpieces often cause large thermal deformation due to the high grinding temperature, thereby failing to obtain high precision.
- Fine grinding and final grinding of mass-produced workpieces (parts of instruments and miniature bearings) on automatic and semi-automatic machine tools.
- Grinding of complex surface workpieces (gear shapers, broaches, high-precision gears, masters, punches) that require abrasive tools with good edge retention.
- Surface grinding of thread cutters and thread gauges (tap, thread roller, thread plug gauge, etc.).
- Super finishing of difficult-to-machine heat-resistant steel workpieces.
- Grinding of other steel quenching tools.