PCBN tool is an artificial cubic boron nitride tool, in high temperature can also maintain high hardness characteristics, mainly for the processing of iron.CBN(Cubic Boron Nitride) was first synthesized by us general electric (GE) under high temperature and high pressure by the manual method in the 1950s. Its hardness is second only to diamond but far higher than other materials, so it is collectively referred to as superhard materials with diamond.
Las características de las herramientas PCBN
De acuerdo con los componentes añadidos, hay dos tipos de PCBN sinterizados directamente por CBN sencillo - sinterización de cristal y PCBN sinterizado con una cierta proporción de ligante. De acuerdo con la forma de fabricación de compuestos: hay bloques sinterizados de PCBN integrados y piezas compuestas cimentadas de carburo compuesto de PCBN. Las tabletas compuestas de PCBN con el aglutinante son ampliamente utilizadas. La dureza de PCBN varía según la proporción de aglutinante añadido. Cuanto más alto sea el contenido del encuadernador, menor será la dureza y mejor será la dureza. Diferentes tipos de encuadernación, el uso de PCBN es diferente.
CBN is widely used in grinding because of its high hardness, chemical inertia and thermal stability under high temperature. Because the CBN has better than the other characteristics of the cutting tool material, so people began trying to apply to machine, but smaller particles of monocrystalline CBN, it is difficult to make knives, and CBN sintering property is very poor, difficult to make a larger CBN sintered body, until the 1970 s, the former soviet union, China, United States, Britain, and other countries have been developed as a cutting tool of CBN sintered body, Polycrystalline Cubic Boron Nitride PCBN (Polycrystalline Cubic Boron Nitride). Since then, PCBN has been applied in various fields of cutting with its superior cutting performance, especially in the cutting of high hardness materials and difficult materials. After more than 30 years of development and application, PCBN tool materials for processing different materials have emerged.
Demina ha desarrollado la máquina de rectificado de herramientas CNC PCBN, puede moler el borde y el arco circular de herramientas PCBN con alta eficiencia.
