CBN Insert

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1. What is CBN?
2. Feature of PCBN (Polycrystalline Cubic Boron Nitride)
3. The hardness and ware resistance contrast of main cutting tool material.
4. The main types of AMT CBN cutting tools and chip breaker and coating.
5. The grades and application
6. AMT innovative CBN inserts cutting edge express
7. AMT CBN insert naming standard
8. AMT CBN insert Ordering demonstration.



What is Cubic Boron Nitride (CBN)

CBN: Cubic Boron Nitride
PCBN: Polycrystalline Cubic Boron Nitride

Cubic Boron Nitride (CBN) is a high hardness, high heat- resistance crystal synthesized by boron and nitrogen

under high temperature and high pressure.

The Polycrystalline Cubic Boron Nitride (PCBN) is a sintered material synthesized by selecting CBN micro-nano crystal powder and binder under high temperature and high pressure

Boron and nitrogen are very rich in the nature: 78% of the air component is nitrogen! The cutting tools made of CBN can replace a large number of cutting tools made of high pollution and high energy consumption mineral resources, such as tungsten carbide and corundum

China is the country with large amount of tungsten resources,
but according to a report: 50-100 years later, the world will
be in a shortage of tungsten!

The PCBN cutting tools have been widely used in the
field of machining ferrous metal!

Features of Polycrystalline Cubic Boron Nitride (PCBN)

The best cutting tool material with high hardness and heat-resistance
among known materials


Through twice high temperature and high pressure in the manufacturing process

1.Transform HBN into CBN under high temperature and high pressure.
2.Then synthesized into PCBN by mixing CBN micro-nano powders and binders
under high temperature and high pressure.

PCBN has strong chemically inert, so it can’t occur chemical reaction with
ferrous metal under high temperature.

1.Used for machining cast iron.
2.Used for machining high hardness, high wear-resistant alloy cast iron
and cast high speed steel
3.Used for machining hardened steel
4.Used for machining hard processing materials, such as high temperature
alloys, tungsten carbide, etc



The Red Hardness Contrast of Main Tool Material

The red hardness of CBN can reach 1370°C, almost twice
as high as the red hardness of diamond: the hardness of
PCBN is higher than the room temperature hardness of
carbide, ceramics, PCD at 800°C. So the cutting speed of
CBN cutting tools can be 2-5 times higher than hard alloy,
ceramic cutting tools, and has high cutting efficiency.

The Hardness and Wear Resistance
Contrast of Main Cutting Tool Material




The Main Types of A.M Tech Innovative CBN Superhard Cutting Tools

A.M Tech ABN series solid CBN tools

Better impact resistance
Both sides of the cutting edge can be
used for cutting

A.M Tech ABS series soldering cutting tools

More cutting edges
Having straight hole and counter bore, can be easily
installed onto standard tool holder

A.M Tech ABK series super finishing cutting tools

Used for higher precision and longer tool life cutting

Diversification of the CBN cutting tools



Chip Breaker, Fastening Pit and Coating Technology of CBN Superhard Insert Innovated by A.M Tech

The chip breaker of CBN inserts innovated by A.M Tech improved the cutting performance and widened the application scope of CBN inserts.

A.M Tech adopts the world advanced manufacturing technology, it would be able to make fasteing pit on the solid CBN inserts in the shape of square, round or other special shapes By doing this, A.M Tech improves the reliability of the CBN inserts’ fastening and location, which can realize the multi-direction cutting, and improve the cutting performance of CBN inserts

A.M Tech innovative various CBN inserts coating technology for different material, this
can improve inserts, life by 20%-50%

The Grades and application industries of A.M Tech innovative CBN supperhard cutting tools

The Grades and application industries of A.M Tech innovative ABF supperhard cutting tools

The Grades and application industries of A.M Tech innovative CBN supperhard milling cutting tools


A.M Tech Innovative CBN Inserts Cutting Edge Express Regulation


A.M Tech CBN Superhard Cutting Tools Naming Standard


Order Demonstration and Instruction for A.M Tech Innovative CBN Superhard Cutting Tools


ISO Code Expression of Indexable External Turning Tool Holder