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Advanced Materials Laboratory

In the metal and inorganic materials fields, we have created not only unique materials, but also process innovations by using our ultra high pressure and powder metallurgy technologies. We contribute to our business expansion in industrial materials and other business fields through the development of high functional materials and parts including cemented carbide cutting tools, diamonds, ceramics, sintered ferrous alloys and special steel wires.

■In response to various needs based on our core technologies

Powder metallurgy technology / Ultra-high pressure technology

In the powder metallurgy field, we have developed cemented carbides for cutting tools, cermets and sintered Fe alloy and Al alloy parts for automobiles.
Recently, we have been developing nano-polycrystalline diamonds* that consist of nano-sized crystals and are harder than single crystal diamonds, as well as magnetic materials (magnetic cores, magnets) to contribute to performance improvement of motors and sensors.

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

Cemented carbide tool
Cemented carbide tool
Powder magnetic core
Powder magnetic core
Nano-polycrystalline diamond (Trade name : Sumidia Binderless™)
Nano-polycrystalline diamond
(Trade name : Sumidia Binderless™)

Melt-casting technology / Plastic working technology

In the special steel wire field, we are developing high performance spring wires and pre-stressed concrete (PC) strands by using our rolling, heat treatment and wire-making technologies. Recently, we have focused on the development of electrical discharge machining wires for precise processing of machine parts and metal molds.

Oil-tempered wire for valve spring
Oil-tempered wire for valve spring
Electrical discharge machining wire (Trade name : Sumi Sparkγ™)
Electrical discharge machining wire
(Trade name : Sumi Sparkγ™)
Cross section of electrical discharge machining wire
Cross section of electrical discharge machining wire

Thin film coating technology / Sintering technology

In the thin film coating field, we have developed coated ceramic film with high hardness and high adhesion for cutting tools.

Coating chip
Coating chip

In the ceramic field, we have developed functional materials with unique thermal, electrical and optical properties. Recently, we have been developing next generation oxide semiconductor sputtering targets for thin film transistors used in flat panel displays.

Oxide semiconductor sputtering target
Oxide semiconductor sputtering target
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