Anti-oxidant magnetic heating film for non-magnetizer cooker and preparation thereof

An anti-oxidation and heating film technology, applied in special materials for cooking utensils, etc., can solve the problems of easy loosening, short service life, and large gap between thermal expansion and contraction between magnetic products and ceramics, and achieves extended service life, reduced costs, The effect of improving the magnetic heating efficiency

Inactive Publication Date: 2017-03-08
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-oxidation magnetic heating film for non-magnetic pots and its preparation to solve the problem that the existing metal film is directly covered on the bottom of the ceramic tank without anti-oxidation treatment, which is easy to be oxidized, resulting in power decline and use. Short life; the difference between thermal expansion and cold contraction between magnetic products and ceramics is large, resulting in delamination, easy to loosen, swell and other problems

Method used

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  • Anti-oxidant magnetic heating film for non-magnetizer cooker and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing an anti-oxidation magnetic heating film for non-magnetic pots and utensils, mainly comprising the following steps:

[0026] 1) material preparation

[0027] A. Weigh the raw materials of the magnetic heating layer according to the following weight percentages: 50% of 430 stainless steel powder, 25% of nickel powder, 5% of copper powder, 15% of glass powder, and 5% of aluminum powder; after adding the raw materials into varnish according to the ink preparation process Stir and mix evenly and use precision roller equipment for high-speed grinding to fully refine the magnetic heating layer slurry, which is sealed for later use.

[0028] B. Weigh high thermal conductivity glass raw materials according to the following volume percentage: ZnO 30%, B 2 o 3 10%, P 2 o 5 30%, Bi 2 o 3 10%, Al 2 o 3 15%, Fe 2 o 3 5%; the raw materials are mixed according to the ordinary glass powder preparation process → melting → ball milling → sieving to prepar...

Embodiment 2

[0035] A method for preparing an anti-oxidation magnetic heating film for non-magnetic pots and utensils, mainly comprising the following steps:

[0036] 1) material preparation

[0037] A. Weigh the raw materials of the magnetic heating layer according to the following weight percentages: 55% of 430 stainless steel powder, 30% of nickel powder, 8% of copper powder, 5% of glass powder, and 2% of aluminum powder; add the raw materials to the varnish according to the ink preparation process Stir and mix evenly and use precision roller equipment for high-speed grinding to fully refine the magnetic heating layer slurry, which is sealed for later use.

[0038] B. Weigh high thermal conductivity glass raw materials according to the following volume percentage: ZnO 40%, B 2 o 3 30%, P 2 o 5 10%, Bi 2 o 3 12%, Al 2 o 3 5%, Fe 2 o 3 3%; the raw materials are mixed according to the ordinary glass powder preparation process → melting → ball milling → sieving to prepare glas...

Embodiment 3

[0045] A method for preparing an anti-oxidation magnetic heating film for non-magnetic pots and utensils, mainly comprising the following steps:

[0046] 1) material preparation

[0047] A. Weigh the raw materials of the magnetic heating layer according to the following weight percentages: 70% of 430 stainless steel powder, 10% of nickel powder, 10% of copper powder, 8% of glass powder, and 2% of aluminum powder; after adding the raw materials into varnish according to the ink preparation process Stir and mix evenly and use precision roller equipment for high-speed grinding to fully refine the magnetic heating layer slurry, which is sealed for later use.

[0048] B. Weigh high thermal conductivity glass raw materials according to the following volume percentage: ZnO 50%, B 2 o 3 10%, P 2 o 5 10%, Bi 2 o 3 20%, Al 2 o 3 10%, Fe 2 o 3 0%; The raw materials are mixed according to the ordinary glass powder preparation process → melting → ball milling → sieving to pre...

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Abstract

The invention relates to an anti-oxidant magnetic heating film for a non-magnetizer cooker, comprising a magnetic heating layer and a high-temperature anti-oxidant layer; the magnetic heating layer is coated at the bottom part of the non-magnetizer cooker; and the high-temperature anti-oxidant layer is coated at the surface of the magnetic heating layer; after sintering, a closed protective film layer is formed; the magnetic heating layer is prepared from, by weight percent, 30-70% of stainless steel powder, 10-30% of nickel powder, 5-20% of copper powder, 5-15% of sintering aid glass powder, and 2-5% of aluminite powder; the high-temperature anti-oxidant layer includes one or more of silicate material and metal powder or metal oxide. The anti-oxidant magnetic heating film replaces the traditional silver powder by stainless steel powder, so that the cost is effectively reduced and the magnetic heating efficiency is also improved. The expansion coefficient of the magnetic heating layer is basically matched with the expansion coefficient of the cooker body, thereby overcoming the shortcoming of directly chipping the stainless steel plate. The high-temperature anti-oxidant layer contains metal powder, thereby reaching the purpose of adjusting the expansion coefficient of the film layer, reaching the purpose of preventing oxidization of the heating layer and prolonging the service life of the magnetic heating layer.

Description

technical field [0001] The invention relates to a magnetic heating film, in particular to an anti-oxidation magnetic heating film used for non-magnetic pots and utensils and its preparation. Background technique [0002] As a new type of cooker in the kitchen utensils market, the induction cooker adopts the principle of magnetic field induction eddy current heating. It has the advantages of no open flame, fast heating, high thermal efficiency, no heat radiation, no smoke and dust to the surrounding environment, and good safety. It is a kind of high-efficiency and energy-saving kitchen utensils. Welcome. However, the induction cooker cannot directly heat pots and utensils of non-magnetic conductors such as ceramics and copper. When pans made of non-magnetic materials are used for heating on an induction cooker, special treatment is required for such pans. At present, in order to enable non-magnetic pots such as ceramic pots and copper pots to be heated electromagnetically, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J36/02C03C12/00B22F1/00C22C30/02C22C32/00C22C38/42C22C38/06
CPCA47J36/02B22F1/0003C03C12/00C22C30/02C22C32/001C22C38/06C22C38/42
Inventor 黄永俊李少杰王双喜王文君
Owner SHANTOU UNIV
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