Ceramic insulators are ceramic materials used to insulate electrically-conductive materials or temperature-controlled enclosures. In the context of electrical insulation, ceramic insulators are usually limited to the insulation of electrically conductive materials on an industrial or municipal scale.
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ACCCO, Inc.Roseville, OH 800-828-7539 ACCCO Inc. is located in an area of Ohio that was once the largest ceramic manufacturing region in the world due to its rich clay deposits left behind by the receding glaciers. ACCCO mines and processes these rich clay deposits by way of a sister company, then produces the vast amounts of ceramic products, like ceramic insulators, by way of ceramic processes. Call today!
Machined Ceramics, Inc.Bowling Green, KY 270-781-0512 Machined Ceramics is a precision ceramic machining company with many unique capabilities. We are experienced in machining aluminum oxide, alumina ceramic, iron oxide, and other high-tech ceramic materials to produce a variety of ceramic products, like ceramic insulators. We offer Ultrasonic core drilling, center-less grinding, milling, threading as well as developmental engineering services.
Advanced Ceramic TechnologyOrange, CA 714-538-2524 As the number of applications and demand for ceramic parts continues to increase within the aerospace, computer and industrial markets, the team at Advanced Ceramic Technology has continued to develop the most efficient methods to meet the market demands of machining these materials. Products like ceramic insulators, rings and saddles are in high demand.
San Jose Delta Associates, Inc.Santa Clara, CA 408-727-1448 San Jose Delta Inc. is a fully integrated technical ceramics manufacturing facility specializing in high reliability products fabricated from ceramic or ceramic like materials such as aluminas, beryllium oxide and Macor ceramics. We are supported by a modern and fully integrated grinding department that can offer quality and cost effective manufacturing and fast delivery.
Technical Products, Inc.Hubertus, WI 800-869-2008 At Technical Products, Inc we are committed to providing our customers with quality parts and services. We stock macor rods, bars, sheets and discs as well as ceramic insulators that are able to ship in 1-3 days. Our knowledge of the industry can help direct you to the most effective and appropriate material for your specific application. We strive to provide the best services and products we can.
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Ceramic Insulators
The most easily recognizable ceramic insulators can be found at power substations and on electrical transformers suspended from utility poles. They are called bushings and are usually designed with several conic or circular tiers stacked on top of each other. These tiers are designed to keep water as far away from the center of the bushing as possible; this reduces the number of avenues by which electricity could be conducted in the case of a bushing puncture or fracture. In the context of thermal insulation, ceramic insulators are used to help maintain the temperatures of industrial ovens, art studio kilns and many other kinds of heat-generating equipment. This improves heating process efficiency while simultaneously preventing the unwanted transmission of heat, often in unsafe degrees, into workspaces. Ceramics are often good choices for heat and electrical insulation because of the electrical and thermal non-conductivity of some ceramic varieties.
Ceramics are versatile materials and can be shaped into solid insulation of any shape. Ceramic fibers can also be spun into high temperature insulation "wool." Ceramic wool is an excellent insulator because it is easily placed around heating enclosures and prevents heat from escaping. Ceramics vary in their electrical and thermal conductivity. Aluminum nitride and silicon carbide, for example, conduct heat well, which does not make them suitable thermal insulators. If either material was used to insulate a heating enclosure, heat generated in the enclosure would be transferred quickly to the insulation and then transferred again to the area outside of the enclosure. Aluminum oxide ceramics are fair thermal insulators and are most effectively employed in low-heat insulation applications. Silicon nitride is better still as an insulator and zirconia is among the most effective ceramic insulators, transmitting very low levels of heat between itself and heating enclosures. Another important property of ceramics related to their capacity as insulators is their low thermal shock susceptibility. Thermal shock susceptibility is the tendency of a material to become damaged when exposed to frequently or quickly changing temperatures. Most ceramics are very thermal shock-resistant.
