cartridge heaters 筒式加热器

The construction of high temperature cartridge heaters positions a nickel-chrome resistance wire precision wound around a magnesium oxide core. It is inserted into a stainless or Incoloy tube locating the resistance wire close to the sheath. The core is centrally positioned within the tube and filled with magnesium oxide powder. Nickel pins pass through the centre of the core making contact with the resistance wire at both ends. The whole is assembly is highly compacted by a swaging operation and thus ensuring excellent heat transfer to the external sheath. This allows for operating temperatures to 1600ºF and high watt densities. One end of the heater is closed with a welded metal end-disc and wire leads exit at the opposite end which is typically closed with a lava seal. A variety of wire leads and lead protection options are available. Heaters can be supplied with internal thermocouples, mounting fittings and many other options.

高温筒式加热器的建造位置是一个镍铬电阻线精密缠绕在氧化镁芯周围。它入到一个不锈钢或 Incoloy 管定位电阻导线接近鞘。核心是集中定位在管内, 并填充氧化镁粉。镍销通过中心的核心与电阻线两端接触。整体是装配是高度紧凑的摇晃的操作, 从而确保良好的传热到外部鞘。这允许工作温度1600ºF 和高瓦特密度。加热器的一端用焊接金属端板和导线引线出口关闭, 在相反端, 通常用熔岩密封封闭。可提供各种导线引线和引线保护选项。加热器可以提供内部热电偶, 安装配件和许多其他选项。