The company will begin selling a new cutting tool for micro-machining in February 2012. The tool head uses a nano-polycrystalline diamond "SUMIDIA BINDERLESS" formed by the direct combination of fine particles of several tens of nanometers. At the same time, Allied Material, a subsidiary of the Group, sells cutting tools for ultra-precision machining using the same material.
In the diamond used on the cutting head of the cutting tool and the wear-resistant tool, in addition to the "natural diamond", the "sintered diamond" which is obtained by sintering the particulate diamond powder together with the metal bonding material is widely used, and in the interior of the earth. "Artificial single crystal diamond" grown under the same high temperature and ultra high pressure conditions.
Natural and artificial single crystal diamonds, which are the hardest materials on the earth, are quite high-quality tool materials, but due to the characteristics of crystalline structures, they are easily split (cleavage) in a certain direction and wear faster. On the other hand, the sintered diamond of a polycrystalline structure, although not cleavable, has a hardness lower than that of single crystal diamond because it contains metal binder particles.
The nano-polycrystalline diamond "SUMIDIA BINDERLESS" developed by the company is a single-phase diamond nano-polycrystal formed by directly strengthening and bonding fine diamond particles of several tens of nanometers in size. Compared with the conventional artificial single crystal diamond, the synthesis temperature is higher, the pressure is larger, and it is synthesized by a special method, so it is a brand new artificial diamond. Since this single-phase diamond polycrystal does not contain a bonding material, it has higher hardness than single crystal diamond, and solves the weakness of single crystal diamond which is easy to be cleaved, and can be regarded as the ultimate beyond ordinary diamond. Diamond.
In order to expand the use of "SUMIDIA BINDERLESS" on cutting tools, we have used "SUMIDIA BINDERLESS" for tool heads, and developed micro-machined round-end slot milling cutters and lathe turning tools for hard and brittle materials such as super-hard alloys, Allied Material has developed cutting tools for ultra-precision machining of hard and brittle materials such as optical component molds.
The tools developed this time were exhibited at the company's booth at the "Precision Fine Processing Technology Expo" held at the Big Sight (Tokyo International Exhibition Center) in Tokyo on January 18 (Thursday) to 20 (Friday).
Overview of the "SUMIDIA BINDERLESS" cutting tool
[Product size and specifications]
Single-blade round head slot milling cutter with end radius 0.3mm~1mm (Sumitomo Electric)
Lathe turning tool (cut into 10?m~ tens?m) (Sumitomo Electric)
Ultra-precision cutting tool (cut into 1?m~10?m) (Allied Material)
[Sales Plan (Group Total)]
First year 200 million yen 3 years later 1.2 billion yen
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SUMIDIA is a registered trademark of Sumitomo Electric Industries, Ltd.
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