A Metal/Ceramic Layered Composite Internal Heater

Abstract

The invention relates to a metal / ceramic layered composite material inner heater. The metal / ceramic layered composite material inner heater comprises an outer casing pipe, thermal conductive alloy, a heating core, antioxidants, a press seal device and a suspension ring, and is characterized in that the outer casing pipe is made of multiple layers of materials and sequentially comprises a ceramic layer, an alloy bond layer and a metal layer in the direction from making contact with galvanizing zinc to being away from the galvanizing zinc; the ceramic layer and the metal layer are bonded together through the alloy bond layer; the alloy bond layer is Al-Ti-Cu-Si alloy which comprises, by mass, 5-10% of Ti, 3-8% of Cu, 9-14% of Si, and the balance Al; the outer casing pipe and the press seal device are connected through a flange and a sealing pad; the suspension ring is fixed on the press seal device; the upper end of the heating core is connected with the press seal device; the lower end of the heating core is arranged in the outer casing pipe; the heating core is composed of a U-shaped electric heating pipe; partition boards are evenly distributed on the part, in the outer casing pipe, of the heating core; the thermal conductive alloy is arranged in the outer casing pipe; the heating core is soaked in the thermal conductive alloy in the working process.

Description

technical field

[0001] The invention relates to a heater, in particular to an inner heater of a metal / ceramic layered composite material. Background technique

[0002] At present, most of the internal heaters used in industry are made of metal materials, and there are still corrosion problems for heating some highly corrosive substances. The patent (new application) with the application number of 2014106056655 discloses a liquid zinc corrosion resistant alloy inner heater. The outer sleeve of the inner heater is made of tungsten-molybdenum alloy. Technology cannot make large-scale outer casing more than one meter. In addition, the internal heater made of inorganic non-metallic materials such as quartz glass, silicon carbide, silicon nitride or graphite has the characteristics of high strength and high brittleness, and is only suitable for heating in specific substances or working environments. Small, high damage rate. Yang Wanli and others studied the preparation process ...

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