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Heating device for electrochemstry cleaning salt bath furnace

A technology of heating device and salt bath furnace, which is applied in the direction of immersion heating device, ohmic resistance heating parts, etc., which can solve the problems of low thermal efficiency, uneven heating of salt bath furnace tank, short service life, etc.

Active Publication Date: 2013-03-06
FIRST DESIGN & RES INST MI CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This heating structure has the defects of slow heating speed and low thermal efficiency, resulting in uneven heating of the salt bath furnace, rapid corrosion, and short life, making the cleaning efficiency of the electrochemical cleaning salt bath furnace low and the cleaning cost high

Method used

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  • Heating device for electrochemstry cleaning salt bath furnace
  • Heating device for electrochemstry cleaning salt bath furnace

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Embodiment Construction

[0018] The present invention will be described in further detail below by way of implementation and accompanying drawings:

[0019] see figure 1 : the device comprises a housing 1 with an open upper end and a closed lower end, and a heating core. The heating core includes a ceramic bracket 2 that protrudes into the housing 1 and covers the upper end of the housing 1, a resistance band 3 that is mounted on the ceramic bracket 2 and whose two upper ends are exposed outside the housing 1, and the resistance band 3. Two electrode studs 4 welded to the two upper ends respectively. The cross-sectional shape of the housing 1 is circular; the material of the housing 1 is stainless steel.

[0020] The ceramic support 2 includes six circular ceramic sheets 21 horizontally spaced from top to bottom, a cylindrical ceramic block 22 arranged between every two adjacent ceramic sheets 21, fastening bolts 23, fastening nuts 24, ceramic The radial dimension of sheet 21 is larger than the rad...

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Abstract

The invention relates to a heating device, in particular to a heating device for an electrochemical cleaning salt bath furnace heater in the foundry industry. The heating device comprises a shell with an open upper end and a closed lower end, and a heating core which comprises a ceramic bracket, a resistance band and two electrode connecting columns, wherein, the ceramic bracket extends into the shell and covers the opening on the upper end of the shell; the resistance band is arranged on the ceramic bracket and two upper ends of the band are bared outside the shell; and the two electrode connecting columns are respectively welded with the two upper ends of the resistance band. When in use, the heating device is directly placed in non-oxidizing molten salt in a tank body of the salt bath furnace. By utilizing the technical proposal, the resistance band of the heating core produces heat in the shell, and then the heat is diffused into the non-oxidizing molten salt outside the device through the shell so as to evenly heat the non-oxidizing molten salt. As the heating device is directly placed in the non-oxidizing molten salt in the tank body of the salt bath furnace by utilizing a built-in heating mode, the heating device has the advantages of fast heating speed and high heat efficiency so that the tank body of the salt bath furnace is evenly heated and has the characteristics of slow corrosion speed and long service life, thus finally achieving the purposes of higher cleaning efficiency and lower cleaning cost of the electrochemical cleaning salt bath furnace.

Description

technical field [0001] The invention relates to a heating device, in particular to a heating device for an electrochemical cleaning salt bath furnace in the foundry industry. Background technique [0002] Electrochemical cleaning is called "Kolene" treatment in foreign countries, and it is used to clean hydraulic parts, gas turbine shells, crankcases, investment casting cast iron and steel castings with complex inner cavity structure and high inner surface cleanliness requirements. Can be used for surface treatment of steel. After the workpiece is electrochemically cleaned, in addition to making the inner cavity free of sand and scale, the service life of the metal cutting tool can be increased by about three times. At the same time, the surface corrosion resistance of the workpiece can also be improved to eliminate internal stress. The key equipment of electrochemical cleaning is called salt bath furnace, and its working principle is as follows: put the preheated workpiece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/78H05B3/02C25F1/12
Inventor 李祖权胡筱茹李保谦李超
Owner FIRST DESIGN & RES INST MI CHINA
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