Inner heater of liquid zinc corrosion resistance alloy

An internal heater, zinc corrosion technology, applied in the field of liquid zinc corrosion resistant alloy internal heater, can solve the problems of difficult large-scale industrial production, low thermal efficiency, easy damage, etc., to achieve good thermal conductivity, fast heat transfer speed, reduce effect of heat loss

Active Publication Date: 2015-02-18
TIANJIN GONGDA GALVANIZING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner heater is made of an outer casing made of special metal materials, an inner electric heating core, and a heat conductor, which overcomes the slow heat transfer, low thermal efficiency, high brittleness, easy damage, and low life of the inner heater in the prior art, which is difficult to use. Problems in large-scale industrial production, etc., more suitable for industrial applications

Method used

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  • Inner heater of liquid zinc corrosion resistance alloy
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, the above-mentioned connection method is used for connection. The outer sleeve 8 is made of tungsten-molybdenum alloy, wherein the mass fraction of tungsten is 20%, and the mass fraction of molybdenum is 80%. ℃, the electric heating core 10 adopts a U-shaped electric heating tube, the number of metal plates in the heating area of ​​the electric heating core 10 is 6, the distance between the plates is 30mm, the diameter of the metal plate is 40mm, and the thickness is 2mm; the electric heating core The length of the heating area of ​​10 is 200mm, the total length of the electric heating core 10 is 400mm; the outer diameter of the outer sleeve 8 is 60mm, the wall thickness is 5mm, and the length is 300mm, and the outer diameter of the extension tube 4 is 60mm, and the wall thickness is 5mm , the length is 150 mm, the outer diameter of the first connecting flange 5 and the second connecting flange 7 is 100 mm, and the thickness is 10 mm.

Embodiment 2

[0024] In this embodiment, the above-mentioned connection method is used for connection. The outer sleeve 8 is made of tungsten-molybdenum alloy, wherein the mass fraction of tungsten is 30%, and the mass fraction of molybdenum is 70%. The heat conductor 9 is a low melting point alloy with a melting point of 200-300 ℃, the electric heating core 10 is composed of 3 sets of U-shaped electric heating tubes, the number of metal plates in the heating area of ​​the electric heating core 10 is 13, the distance between the metal plates is 70 mm, the diameter of the metal plates is 100 mm, and the thickness is 6 mm The length of the heating zone of the electric heating core 10 is 988mm, and the total length of the electric heating core 10 is 1450mm; the outer diameter of the outer sleeve 8 is 150mm, the wall thickness is 20mm, and the length is 1200mm, and the outer diameter of the long pipe 4 is 150mm, The wall thickness is 20mm, the length is 300mm, the outer diameter of the first con...

Embodiment 3

[0026]In this embodiment, the above-mentioned connection method is used for connection. The outer sleeve 8 is made of tungsten-molybdenum alloy, wherein the mass fraction of tungsten is 40%, and the mass fraction of molybdenum is 60%. The heat conductor 9 is a low melting point metal with a melting point of 300-400 ℃, the electric heating core 10 is composed of 6 sets of U-shaped electric heating tubes, the number of metal plates in the heating area of ​​the electric heating core 10 is 14, the distance between the metal plates is 100 mm, the diameter of the metal plates is 190 mm, and the thickness is 10 mm The length of the heating area of ​​the electric heating core 10 is 1600mm, and the total length of the electric heating core 10 is 2150mm; the outer diameter of the outer sleeve 8 is 300mm, the wall thickness is 50mm, and the length is 1700mm, and the outer diameter of the extension tube 4 is 300mm, the wall thickness is 50mm, and the length is 500mm. The outer diameter of ...

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Abstract

The invention relates to an inner heater of liquid zinc corrosion resistance alloy. The inner heater of the liquid zinc corrosion resistance alloy is characterized by comprising a compression seal device, an additional pipe, a first connecting flange, a second connecting flange, an outer sleeve, a heat conductor, an electrical heating core, a top pillar, an antioxidant and two extraction electrodes, wherein the electrical heating core is a U-shaped electrical heating pipe, and comprises a heating area and a connection electrode area, a designed number of metal plates are evenly distributed along the length direction of the heating area of the electrical heating core, a disk is welded at the top of the connection electrode area of the electrical heating core, the top of the U-shaped electrical heating pipe and the disk are welded into a whole, the two extraction electrodes are respectively extracted from two ends of the U-shaped electrical heating pipe, the two extraction electrodes are connected with a power source through lead wires, a connection blind hole is formed in the disk, the lower end of the top pillar is connected with the connection blind hole, the upper end of the top pillar is connected with a compression bolt, the additional pipe is a cylinder with two ends open, and the upper end of the additional pipe is connected with the disk.

Description

technical field [0001] The invention relates to a heater, in particular to a liquid-resistant zinc corrosion alloy inner heater which is used in the hot-dip galvanizing industry and can directly heat the zinc liquid in a galvanizing pot. Background technique [0002] At present, the heater used for hot-dip galvanizing by internal heating generally uses inorganic non-metallic materials such as quartz glass, silicon carbide, silicon nitride or graphite as the outer casing resistant to liquid zinc corrosion, and then installs an electric heater inside it. body made. These materials are not suitable for large-scale industrial production because of their high brittleness, easy damage, and low service life, and because of the slow heat transfer and low thermal efficiency of the overall heater. Although the outer casing made of common metal materials has high strength, good toughness and high heat transfer efficiency, it cannot be used in industry because it is not resistant to li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/42C23C2/06
Inventor 赵树鹏温鸣马林
Owner TIANJIN GONGDA GALVANIZING EQUIP CO LTD
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