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Electric heating mica plate and preparation method thereof

A mica board, electric heating technology, applied in electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of affecting heating power and life, detachment of heating resistors, unsafe, etc., to ensure power and life, not easy to deform , to prevent foaming" effect

Active Publication Date: 2010-06-09
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when the electric heating mica board is not in use, the heating resistor is also more likely to be separated from the mica boards on the adjacent sides due to the influence of moisture.
[0006] The above-mentioned "bubbling" and "layering" phenomena, on the one hand, easily lead to corrosion and rust of the heating resistor, which affects its heating power and life. Not environmentally friendly; in addition, it is easy to cause the heating resistors to be exposed, and open flames are easy to appear, which is unsafe

Method used

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  • Electric heating mica plate and preparation method thereof
  • Electric heating mica plate and preparation method thereof
  • Electric heating mica plate and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] Preparation of electric heating mica board (length 394mm; width 513mm; thickness 0.7mm):

[0026] 1. Making resistance sheet 3 (EDM): Cut about 100 sheets of 0.05mm thick 304 stainless steel heating resistor sheets (length 420mm, width 530mm) that have passed the inspection, stack them neatly and fix them on the EDM wire cutting machine. On the wire cutting guide rail of the machine tool DK7763B; check the computer program and input it to the wire cutting controller, check the molybdenum wire and other parts of the wire cutting machine tool, and start the machine tool for EDM after everything is normal (continuous inspection during the cutting process); the cutting is completed Soak the resistance sheet in the cleaning solvent for about 15 minutes, take it out and drain it; bake it in an oven (270℃~280℃) for 2 hours and take it out;

[0027] 2. Production of mica paper: Prepare the sheet-shaped non-calcined powder mica paper 1 arranged on the outer layer (4 sheets each ...

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Abstract

The invention relates to an electric heating mica plate and a preparation method thereof. On one hand, a mode of one-time compression molding by laminating a plurality of layers of mica paper and a heating resistor sheet is adopted and is particularly suitable for the electric heating mica plate with the heating resistor sheet, and the combination between the heating resistor sheet and the mica paper adjacent to the heating resistor sheet is more tight and more complete without gaps; on the other hand, the prepared electric heating mica plate has a structure that the heating resistor sheet is in a continuous wave shape transversely and / or longitudinally; the expanding and shrinking range of the heating resistor sheet is moderate; and some forces separating the heating resistor sheet from the two sides which are generated due to expanding with heat, contracting with cold or wetting and other factors between an upper side and a lower side of the heating resistor sheet can be effectively cushioned. In a word, the phenomena of foaming and layering can be effectively avoided; and the power and service life of the heating resistor sheet are guaranteed. The electric heating mica plate is more environment-friendly and safer, and hardly to deform.

Description

technical field [0001] The invention relates to an electric heating mica board and a preparation method thereof. Background technique [0002] Electric heating appliances are widely used in various civil and industrial purposes, and electric heating mica boards are usually used in electric heating appliances. [0003] In the prior art, the electric heating mica board comprises at least two layers of mica boards (the mica board is pre-pressed by several layers of impregnated mica paper), and a heating resistance element sandwiched between the mica boards (the heating resistance element can be a heating resistance wire , It can also be a heating resistor). Generally speaking, the mica board impregnated with silicone adhesive and the heating resistance element (placed between the upper and lower mica boards) are stacked and then molded and pressed to form a plate-shaped electric heating mica board (usually a flat plate. or curved plate). Usually after pressing, the heating r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/20H05B3/10
Inventor 张犇
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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