CBN inserts

Definition
CBN inserts is the use of artificial methods used in high temperature and pressure conditions, cubic boron nitride powder and a small amount of binding agent

synthetic, its hardness only to diamond which is much higher than other materials, so it is with the diamond tool referred to as super- hard tool. It has high

Hardness, thermal stability and chemical inertness, thermal stability, which is much higher than diamond, iron-based metal element has a greater chemical stability, so

commonly used in the cutting of ferrous metals. CBN inserts used metalworking is a major contribution, resulting in cutting occurs

Revolutionary change, is cutting technology second leap.
Species
Structured into welded composite CBN blade and overall PCBN inserts; former is welded to the cubic boron nitride composite layer composed of a variety of cemented

carbide substrate turning inserts or other boring knives, The latter is the overall polycrystalline structure of the blade.
Developing
Early CBN inserts welded composite films mainly based, is currently still widely used, its characteristic is the ability to achieve high efficient processing or even

"turning instead of grinding", but in the actual production machining, met a lot of intermittent machining hardened steel, hard cast iron,

Gray cast iron, sand, white cast iron in these areas, composite welding CBN (PCBN) inserts often chipping knife fight, so there are a monolithic CBN blade.
Features
Cubic boron nitride inserts are mainly used in gray cast iron, cast iron, a variety of high hardness materials (such as hot work tool steel, high speed steel, bearing

steel, powder metallurgy steel, powder metallurgical, martensitic stainless steel, high strength steel , high manganese steel, white cast iron, austenitic iron

Etc.) of the cutting.
CBN inserts welded composite application characteristics
Cubic boron nitride cutting tools welding compound mainly used for finishing, because of its poor toughness, impact resistance (brittle) is not enough to withstand

larger cutting force (with the size of the tool angle), easy to collapse in discontinuous processing knife, knife to eat when in use depth (unilateral plus

Workers margin) the best in 0.2mm or less is better, using high-speed cutting (can not choose low speed), this village of material wear resistance, heat resistance and

good, but sharpening demanding.
Integral characteristics of the application CBN inserts
Integral piece can be interrupted machining of cubic boron nitride , and encountered gravel, white chipping castings are not in the actual production applications, if

the welding composite CBN tool chipping, or need roughing, finishing a knife to complete, often with overall cubic boron nitride

(PCBN) inserts.
Outlook
Is well known, the performance of the cutting tool determines the three elements of the base material, tool coating and geometry geometry. Because of this, although

China as carbide mineral resources in the country, but in the finished tool, due to domestic and coating technology and groove design skills

Surgery gap, though it is the same material billet rods and knives, made in the performance of cemented carbide has been subject to foreign large tool brand. At

present, the material properties of cubic boron nitride and cubic boron nitride inserts the preparation, which was used without any coating and complex geometries,

Performance relies entirely on the performance of its base decisions, and the physical properties of its own decision with unsurpassed advantage! So it is bound to

bring new cutting technology revolution, and as a pioneer of the localization tool.