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Advanced Materials Laboratory

In metal/inorganic material fields, we have not only created unique materials but also innovative processes using our own technologies such as high pressure and powder metallurgy. We promote business expansion in industrial materials and other business fields of our company through the development of high functional materials/parts including cemented carbide cutting tools, diamonds, ceramic materials, sintered ferrous alloy parts and special steel wires.

■Accommodating various needs based on our core technologies

Powder metallurgy/ultra-high pressure technologies

In the field of powder metallurgy-based materials, we have developed cemented carbide for cutting tools, cermets, and sintered Fe alloy and Al alloy parts for automobiles.

More recently, our development efforts have been focused on nano-polycrystalline diamonds that consist of crystals with dimensions of several tens of nanometers and are harder than single crystal diamonds. We have also worked on the development of low-loss powder magnetic cores suitable for high-frequency bands and commercial products based on these materials.

*Received Best 10 New Products Awards sponsored by The Nikkan Kogyo Shimbun (2013) and Okochi Memorial Technology Prize (2014)

Cemented carbide tool
Cemented carbide tool
Powder magnetic cores
Powder magnetic cores
Nano-polycrystalline diamond (Sold under the trade name of Sumidia® Binderless)
Nano-polycrystalline diamond
(Sold under the trade name of Sumidia Binderless™)

Melt-casting/plastic working

In the special steel wire field, we are working on the development of high performance spring wires and prestressed concrete (PC) strands, using our rolling, heat treatment, and wire-making technologies. Our recent development efforts have been focused on electrical discharge machining wires used for the precise processing of machine parts and metal molds.

Oil-tempered wires for valve springs
Oil-tempered wires for valve springs
Electrical discharge machining wires (Sold under the trade name of SumiSparkγ™)
Electrical discharge machining wires
(Sold under the trade name of SumiSparkγ™)
Pearlitic structure (lamellar)
Cross section of electrical discharge machining wire

Thin film/sintering technologies

In the thin film technology field, we are conducting R&D on the coating of hard ceramic films on cutting tools with good adhesion.

Coated endmill
Coated endmill

We have developed functional ceramic material with unique thermal, electrical, and optical features. Currently, large aluminum nitride/silicon nitride substrates with smooth surfaces are under development.

Aluminum nitride substrate
Aluminum nitride substrate
Silicon nitride substrate
Silicon nitride substrate
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