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Precision Machining Services for Ultra-Hard Materials Copyright © 2020. Top Seiko Co., Ltd. All rights reserved.

Precision Machining Services for Ultra-Hard Materials “Although many precision parts have been made in common metallic materials, we machine ultra-hard materials and make the same parts.” With that motto, Top Seiko has specialized in ultra-hard materials such as advanced ceramics, glass, refractory metals, and newly developed highperformance materials like composite materials. Based on the machinability characteristic of each material and the complexity of the shape of the part, we determine the most suitable manufacturing method using physical and chemical approaches. Complex & 3D...

Materials Alumina（Al₂O₃） Aluminum nitride（AlN） Zirconia（ZrO2） Ceramics Silicon carbide（SiC） Silicon Nitride (Si3N4) Machinable Ceramics Fused Silica Glass (Fused Quartz) Glass Borosilicate Glass Silicon（Si） Crystalline Material Sapphire (Al2O3) MMC Composite Materials CMC Tungsten (W) Molybdenum (Mo) Refractory Metals Tanta

Machining Examples Wine Glass Alumina is one of the materials we machine. It has electrical insulation, heatresistant, and high intensity. Also, relatively easy to machine and low cost. Small Holes Heater Substrate Aluminum Nitride is the material that we excel at machining. It is electrically insulating, and also has high thermal-conductivity (170 W/mK).

Machining Examples Small Holes Zirconia is the material often used for achieving abrasionresistance because of its high hardness and flexural rigidity. Other than that, it has properties of heatresistance and low thermal conductivity. Black Zirconia Silicon Carbide（SiC） Silicon Carbide has very good mechanical properties and maintains its strength even at high temperatures. It also has excellent resistance to acids, alkalis and molten salts up to 800℃. These exceptional properties make SiC suitable in applications requiring great resistance to wear, thermal shock and corrosion. Top Seiko...

Machining Examples Small holes Silicon Nitride has the best combination of mechanical, thermal and electrical properties of any technical ceramic material. It is a high performance technical ceramic with high strength, toughness and hardness, and is extremely resistant to thermal shock and impact. It is also an electrically insulating ceramic material. Typically, it is used in applications where high loadbearing capacity, thermal stability and wear resistance are required. Machinable Ceramics Macerite parts Small Holes Macor part Machinable ceramics are suitable for precision parts with...

Machining Examples Dome Shaped Small Holes Silicon is the most common semiconductor material. High-purity silicon is often used for both wafers and semiconductor processing components to avoid particle or contamination. Columnar crystal silicon is available in large sizes. It also has an advantage in mechanical strength over a wide range of temperatures. Moreover, the machinability of columnar crystal silicon is better than that of singlecrystal silicon, and can be machined with less chipping and cracking.

Machining Examples Fused Silica Glass (SiO2) Honeycomb Lightweight Small Holes Deep Tapered Hole Fused Silica is a hard, high purity glass material with near-zero thermal expansion as well as thermal shock resistance. The max. use temperature is about 1000 C° in the atmosphere, and it is a suitable material at high temperatures. Also, we recommend this material when you need chemical resistance. Fused silica is durable to most chemical substances. We are able to machine not only fused silica but also other kinds of glasses including Tempax, Neoceram, Creaceram, and so on. Thin Wall Pipe...

Machining Examples Tungsten has excellent hightemperature properties including the highest melting point of all metals and the lowest thermal expansion of all pure metals, and is used in many high-temperature applications. Radiation shielding is a notable feature of tungsten as well. Thin Wall Micro Machining Domed Holes Wine Glass We machine some refractory metals and Molybdenum is one of those materials. It has high melting points, 2623 C°, and also it is superior in intensity, electrical conductivity, and thermal conductivit

Machining Examples Tantalum is characterized by its high density, extremely high melting point (3,017°C), and excellent corrosion resistance. In contrast to other refractory metals such as tungsten and molybdenum, tantalum has good ductility and machinability compared to other refractory metals. Despite all of these advantages of tantalum, however, applications are often limited to small parts/components due to its high cost.

About Us Founded：September 14, 2001 Capital：¥20,000,000 JP Yen Head Office & Plant Location Address： 1197-4, Hosoe-cho, Nagahama City, Shiga Pref., 526-0105 Japan Employees：92（2020, June） Business： Productions and sales of custom-machined precision parts made from ultra-hard materials such as glasses, technical ceramics, and refractory metals. Industries Served： Semiconductor & Electronics, Measuring & Analytical, Medical, Industrial, Aerospace, Automotive, Aviation, Nuclear Power and General Manufacturing. Contact TEL：＋81 749-51-9021 FAX：＋81 749-51-9022 Mail：info@top-seiko.co.jp...