Umicore UK Ltd products

Alumina Tubes

Umicore Kyocera - High Temperature Alumina Ceramic Tubes

The high-temperature alumina ceramic tubes offered by our company are crafted from DEGUSSIT AL23 alumina, boasting a purity of 99.7%. This technical ceramic is renowned for its impressive heat resistance, corrosion resistance, and wear resistance, making it particularly suited for demanding industrial applications. Our tubes are typically manufactured via extrusion or isostatic pressing, ensuring robust performance. They are engineered to withstand temperatures up to 1950°C, surpassing the capabilities of most sintered aluminas with a melting temperature above 2000°C. The DEGUSSIT AL23 tubes exhibit minimal deformation under heat, with creep resistance optimized through the addition of coarse grains in the DEGUSSIT AL24 variant. Additionally, these tubes serve as excellent electrical insulators, even at elevated temperatures. The range includes various sizes, from small insulating tubes to larger diameter tubes for use in industrial furnaces, tubular furnaces, laboratory R&D, and the glass industry.

Semi-finished Alumina Products

Kyocera DEGUSSIT - Alumina Bars for High-Temperature Applications

C799 and C795 alumina bars are engineered for high-temperature applications, leveraging the exceptional thermal, electrical, and mechanical properties inherent in alumina. These ceramic bars, often referred to as rods or sticks based on their size, are manufactured through isostatic pressing or extrusion. The main composition of these bars is Kyocera DEGUSSIT AL23, composed of 99.7% alumina, providing high resistance to thermal shocks and temperatures up to 1950 °C. Alumina's dimensional stability at high temperatures ensures consistent performance and longevity. It is also highly resistant to wear, corrosion, and mechanical abrasion, making it suitable for demanding industrial applications. The electrical insulating properties of alumina are ideal for protecting components like thermocouples in high-temperature conditions. These bars serve as semi-finished products allowing custom machining to fit specific industrial requirements.

Other Products

Umicore Kyocera - Alumina Crucibles and Pods for High Temperature Applications

Alumina crucibles are essential components in high-temperature applications where resistance to thermal shock, corrosion, and wear is paramount. These crucibles are predominantly made from aluminum oxide, a material known for its chemical inertness and impressive thermal properties. Kyocera DEGUSSIT AL23, with its 99.7% purity, is a prime example, enduring temperatures up to 1950°C while maintaining dimensional stability. Available in a range of shapes and sizes, including cylindrical and conical forms, their versatility makes them suitable across various fields, such as glass manufacturing, metallurgy, and research and development laboratories. In glass production, alumina crucibles withstand the arduous conditions of molten glass, ensuring handler safety and long-term durability. For metallurgy, these ceramics facilitate the melting of diverse metals, thanks to their effective thermal conductivity and stability. In research settings, their resistance to contamination ensures accurate results, vital for scientific exploration.

Technical Ceramic Balls

Umicore Kyocera - Ceramic Precision Balls for High-Performance Applications

This range of ceramic precision balls is designed for high-performance applications, leveraging their perfectly spherical shape, which is achieved through precision machining and polishing. These balls, manufactured from either pure alumina, 3Y-TZP zirconia, or Si3N4 silicon nitride, exhibit diverse properties such as high density, excellent wear resistance, and low friction coefficient. They are particularly well-suited for dimensional control gauges, ceramic ball bearings, and pumps handling corrosive liquids. The precision spheres offer sizes from 1.00 mm to 100.00 mm with precise dimensional accuracy up to 2.5 µm, facilitating numerous applications. Alumina and zirconia are chosen for their high thermal shock resistance, withstanding temperatures over 1950 °C and doing so with minimal expansion. These balls ensure long operational life in applications exposed to high friction, such as grinding and ball bearings. Additionally, they find roles in non-return valves due to their robust properties, maintaining dimensional stability under varying conditions.