日本免费AV一区二区三区

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          About us

              Established in 1970,Yancheng Huari Electrical Heating Equipment Co.,Ltd.(formerly referred to as Yancheng Qianghua Electrical Heating Equipment Co.,Ltd.)was reformed and changed into privately-owned enterprise in 1986.The company owns technical experts with solid professional background and an experienced production team and is equipped with advanced manufacture and inspection equipments imported from abroad.

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          Ceramic Heating Elements
          Molybdenum disilicide: Molybdenum disilicide (MoSi2) an intermetallic compound, a silicide of molybdenum, is a refractory ceramic primarily used in heating elements. It has moderate density, melting point 2030 °C, and is electrically conductive. At high temperatures it forms a passivation layer of silicon dioxide, protecting it from further oxidation. The application area includes glass industry, ceramic sintering, heat treatment furnaces and semiconductor diffusion furnaces.
          PTC Ceramic elements: PTC ceramic material is named for its positive thermal coefficient of resistance (i.e., resistance increases upon heating). Most ceramics have a negative coefficient, whereas most metals have positive values. While metals do become slightly more resistant at higher temperatures, this class of ceramics (often barium titanate and lead titanate composites) has a highly nonlinear thermal response, so that it becomes extremely resistive above a composition-dependent threshold temperature. This behavior causes the material to act as its own thermostat, since current passes when it is cool, and does not when it is hot. Thin films of this material are used in automotive rear-window defrost heaters, and honeycomb-shaped elements are used in more expensive hair dryers and space heaters.
          Ceramic Heating Elements mainly includes Ceramic Infrared Heater, Ceramic Band Heater, Flexible Ceramic Pad/Rope Heater and others.

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          日本免费AV一区二区三区
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