Каталог Sumitomo пластины с кубическим нитридом бора Sumiboron

SUMIBORON SeriesCBN Tools

General Features In 1977, Sumitomo Electric Hardmetal successfully developed a revolutionary CBN sintered tool - SUMIBORON. The main component in SUMIBORON is Cubic Boron Nitride with a special ceramic binder sintered under super high pressure and temperature. As compared to other conventional tool materials, CBN has higher hardness and excellent heat resistance. With these distinct characteristics, SUMIBORON can perform machining of hardened steel, high hardness cast iron and exotic metals where previously only grinding was done. Furthermore, excellent efficiency and longer tool life can also be achieved from high speed machining of cast irons.

Characteristics The sintered CBN tool - SUMIBORON is mainly used for the machining of ferrous metals due to its

low chemical reactivity with iron. There are 3 different classifications of CBN grades as follows:

A) in the chart below shows high CBN content group, where each grain is fused together. Applicable for the machining of high hardness materials like cast iron, heat resistant alloys and carbides.
B) below shows a group where CBN grains are held together with a special ceramic binder which has a strong binding force. These provide excellent wear resistance and toughness in the machining of hardened steel and cast iron.
C) below shows SUMIBORON with a special ceramic coating (Coated SUMIBORON). The CBN substrate along with the coating layer exhibit hardness, toughness, heat resistance and oxidation resistance, required by a tool material for excellent cutting performance.

Classifications Microstructure Diagram Grade Work Material

Applications BN700 Cast lron（FC） Sintered Ａ Sintered Alloy lloy

BN7000 Exotic Alloys Mainly CBN grains A) fused together BN7500 Sintered Ａ Sintered Alloy lloy

L B) held together with a BNX10

binder BNX20 CBN grain Ceramic binder BNX25 BN500 Cast lron（FC/FCD）

Special BNC2010 ceramic coating

Sintered CBN body Hardened Steel

C) with special ceramic BNC100

coating BNC160 BNC200 BNC500 Cast lron（FCD） CBN Layer