Общий каталог Sumitomo 2019 - 2020 - страница 1032

SUMIBORON CBN Tools SUMIBORON ■ General Features Sintered CBN tool "SUMIBORON", which has CBN (cubic boron nitride) - a hard material second only to diamond - as its main component, is sintered with a special ceramic binder under ultra-high pressure and temperature. SUMIBORON has high hardness, excellent thermal resistance and excellent properties including being unreactive to ferrous metals, enabling exotic alloys, hardened steel or hard cast iron L to be machined. Excellent efficiency and longer tool life can also be achieved from high-speed finishing of cast iron. "SUMIBORON" was first successfully developed in Japan by our company in 1977. "Coated SUMIBORON" with a special ceramic coating, and "SUMIBORON Binderless" made by directly bonding CBN particles without a binder are new additions to our product lineup. ■ Features The sintered CBN tool SUMIBORON is mainly used for the machining of ferrous metals due to its low chemical reactivity with iron. There are 4 different classifications of SUMIBORON as follows: ● Table (A) below shows the group with a high CBN content, where each grain is fused together. This group can be used for the machining of high-hardness materials like cast iron, heat-resistant alloys and powdered metals. ● Table (B) shows the group where CBN grains are held together by a special ceramic binder with a strong binding force. These provide excellent wear resistance and toughness in the machining of hardened steel and cast iron. ● Table (C) below shows SUMIBORON with a special ceramic coating. The CBN and coating layer exhibit the hardness, toughness, thermal resistance and oxidation resistance that tool material requires for excellent cutting performance. ● Table (D) shows a product containing no binder; its structure of directly bonded nano- to sub-micron CBN particles provides excellent hardness and thermal conductivity, making it highly efficient with a long tool life when machining exotic alloys such as titanium alloys and cobalt-chrome alloys. ■ Classifications / Classifications Structure Diagram Grade Work Material Applications BN700 K Cast Iron (FC) Sintered Alloy Powdered Metal (A) Mainly CBN grainsfused together BN7000 S Exotic AlloyBN7500SinteredAlloyPowderedMetal CBN grain Metal binder BNS800 K Cast Iron (FC) S Exotic Alloy BN1000 BN2000 Mainly CBN grains BN350 H Hardened Steel (B) fused together BNX10 with a binder CBN grain BNX20 Ceramic binder BNX25 BN500 K Cast Iron (FC/FCD) Special ceramic coating BNC2010 BNC2020 Sintered CBN body(C)with special ceramic BNC300BNC100 H Hardened Steel coating BNC160 BNC200 CBN BNC500 K Cast Iron (FCD) K Cast Iron (FC) S Exotic Alloy (D) CBN particles onlyare bonded strongly NCB100 Carbide Carbides 500nm Hard Brittle Material Hard Brittle Materials L2 CBN particles (no binder)