Boron Nitride Ceramic Insulator For High Temperature Furnace

High temperature furnace designs contain heating elements made of carbon, tungsten or molybdenum. When the operating temperature of the high temperature furnace is significantly higher than 1500°C, the elements are electrical insulated from the furnace sides using aluminum oxide ceramics. With the development of technology, more and more companies need high temperature electrical furnaces with shorter production cycles and faster heating and cooling speeds. These oxide ceramic insulation parts are easily subject to failure of components due to high pressure, which increases the downtime of the furnace. Compared with traditional aluminum oxide materials, the working life of ceramic components made of hexagonal boron nitride (BN) is much longer. For thermal processes at extremely high temperatures and vacuum or inert conditions, boron nitride ceramics are often the only feasible solution. Boron nitride ceramic material max using temperature in inactive gas atmosphere is 2100°C. In the field of high temperature furnaces, they includes: vacuum furnaces, hot pressing sintering furnaces, hot isostatic furnaces, Innovacera can provide a series of boron nitride precision machined components such as boron nitride sleeves, BN bushings, BN tubes, BN washers, BN insulators, BN insulation plates, BN flanges and other boron nitride ceramic insulator parts subjected to high thermal shock to meet customers’ specific requirements in the high temperature furnaces industry. Boron Nitride Material Advantages – 1. High temperature resistance: can maintain stable performance under high temperature environment. – 2. No bonding: no bonding phenomenon, easy to use and handle. – 3. Corrosion resistance: able to resist the erosion of various corrosive media. – 4. Heat dissipation: has good heat dissipation performance. – 5. Thermal conductivity: can effectively conduct heat. – 6. Thermal shock resistance, high electrical breakdown strength (3-4 times that of alumina), carbon atmosphere corrosion resistance is much stronger than alumina. – 7. It does not wet with aluminum water and can protect the surface of materials in direct contact with aluminum liquid, magnesium, zinc alloy, and slag.