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Preparation method of high tension coating for oriented silicon steel

A technology of oriented silicon steel and high tension, applied in the direction of coating, anti-corrosion coating, etc., can solve the problems of large-scale industrial application, complex production process, high technical requirements, etc., to achieve guaranteed coating effect, high bonding strength, Effect of anti-stripping insulation performance

Inactive Publication Date: 2019-09-17
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although the above-mentioned ceramic coatings have excellent heat resistance, weldability and adhesiveness, and the grinding and smoothing of the surface of the grain-oriented silicon steel before coating can reduce the hysteresis loss, the ceramic coatings represented by TiN and TiC require The use of magnetron sputtering equipment requires high technical requirements, and the production process is more complicated than traditional phosphate coatings, and the cost is high. Large-scale industrial applications have not yet been realized.

Method used

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  • Preparation method of high tension coating for oriented silicon steel
  • Preparation method of high tension coating for oriented silicon steel
  • Preparation method of high tension coating for oriented silicon steel

Examples

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Embodiment 1

[0041] A method for preparing a high-tensile coating for oriented silicon steel. The steps of the preparation method described in this embodiment are:

[0042] Step 1. Determining the composition of the high tension coating solution for grain-oriented silicon steel

[0043] The components and contents of the high-tension coating solution for oriented silicon steel are: aluminum dihydrogen phosphate is 30-35 wt%, silica sol is 35-40 wt%, chromic anhydride is 2-2.5 wt%; potassium dihydrogen phosphate is 0.8-1.6 wt%, zirconium oxychloride 1.3-2.5 wt%, and deionized water 20-24 wt%.

[0044] Step 2. Preparation of High Tension Coating Solution for Oriented Silicon Steel

[0045] According to the components and content of the high tension coating solution for oriented silicon steel, first add the zirconium oxychloride into the deionized water, stir until dissolved to obtain a zirconium oxychloride solution; then add the phosphoric acid dichloride Add aluminum hydrogen, silica so...

Embodiment 2

[0049] A method for preparing a high-tensile coating for oriented silicon steel. The steps of the preparation method described in this embodiment are:

[0050] Step 1. Determining the composition of the high tension coating solution for grain-oriented silicon steel

[0051] The components and contents of the high-tension coating solution for oriented silicon steel are: aluminum dihydrogen phosphate is 35 to 40 wt%, silica sol is 25 to 30 wt%, chromic anhydride is 2.5 to 3.0 wt%; potassium dihydrogen phosphate is 1.6-2.4 wt%, zirconium oxychloride 2.5-3.8 wt%, and deionized water 22-26 wt%.

[0052] Step 2. Preparation of High Tension Coating Solution for Oriented Silicon Steel

[0053] According to the components and content of the high tension coating solution for oriented silicon steel, first add the zirconium oxychloride into the deionized water, stir until dissolved to obtain a zirconium oxychloride solution; then add the phosphoric acid dichloride Add aluminum hydrogen...

Embodiment 3

[0057] A method for preparing a high-tensile coating for oriented silicon steel. The steps of the preparation method described in this embodiment are:

[0058] Step 1. Determining the composition of the high tension coating solution for grain-oriented silicon steel

[0059] The components and contents of the high-tension coating solution for oriented silicon steel are: aluminum dihydrogen phosphate is 20-25 wt%, silica sol is 40-45 wt%, chromic anhydride is 3.0-3.5 wt%; potassium dihydrogen phosphate is 2.4-3.2 wt%, zirconium oxychloride 3.8-5.0 wt%, and deionized water 24-28 wt%.

[0060] Step 2. Preparation of High Tension Coating Solution for Oriented Silicon Steel

[0061] According to the components and content of the high tension coating solution for oriented silicon steel, first add the zirconium oxychloride into the deionized water, stir until dissolved to obtain a zirconium oxychloride solution; then add the phosphoric acid dichloride Add aluminum hydrogen, silica ...

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Abstract

The invention relates to a preparation method of a high tension coating for oriented silicon steel. The technical scheme is as follows: components of a high-tension coating solution are as follows: 20-40 wt% of aluminum dihydrogen phosphate, 25-45 wt% of silica sol, 2-4 wt% of chromic anhydride, 0.8-4.0 wt% of potassium dihydrogen phosphate, 1.3-6.4 wt% of zirconium oxychloride, and 20-30 wt% of deionized water; according to the component and content of the high tension coating solution, firstly aluminum dihydrogen phosphate, silicon sol and chromic anhydride are added into a reaction kettle, uniform mixing is performed, then potassium dihydrogen phosphate and a zirconium oxychloride solution obtained by mixing zirconium oxychloride with deionized water is sequentially added, stirring is performed, then the high tension coating solution for oriented silicon steel obtained by stirring is smeared on the surface of oriented silicon steel, baking is performed in a protective atmosphere, and high temperature solidification is performed to obtain the high tension coating for oriented silicon steel. The method has the characteristics of low cost, simple process and easy industrial production, and the prepared high tension coating for oriented silicon steel has good tensile effects and excellent performance.

Description

technical field [0001] The invention belongs to the technical field of tension coating. In particular, it relates to a preparation method of a high tension coating for oriented silicon steel. Background technique [0002] Grain-oriented silicon steel is an important soft magnetic material in the electric power and electronics industry, which has excellent properties of high magnetic induction and low iron loss, and is mainly used as the iron core material of transformers and other electrical equipment. In the production process, the surface of grain-oriented silicon steel needs to be coated with an insulating layer. The insulating coating can protect silicon steel sheets from erosion and rust of various corrosive media during storage, transportation and use, improve surface resistivity, and reduce eddy current loss of grain-oriented silicon steel. Due to the difference in thermal expansion coefficient between the insulating coating and the grain-oriented silicon steel, dur...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/08C09D7/61
CPCC09D1/00C09D5/08C09D7/61
Inventor 顾华志张奕杨爽黄奥
Owner WUHAN UNIV OF SCI & TECH
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