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Insulation environment friendly paint for non-oriented electrical steel

A technology of oriented electrical steel and insulating coating, applied in the direction of coating, etc., to achieve the effect of bright and uniform surface, good insulation and good wettability

Active Publication Date: 2009-02-04
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the traditional chromate coating, there is still a certain gap between the new chromium-free environmental protection coating in terms of wettability, heat resistance, adhesion, etc.

Method used

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  • Insulation environment friendly paint for non-oriented electrical steel

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Embodiment Construction

[0027] Each component and its content of the embodiment of the present invention and the corresponding comparative example are shown in Table 1, and the coating of the present invention is prepared according to Table 1.

[0028] Table 1: Coating composition (the contents of all components are calculated according to the dry weight of the substance)

[0029]

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Abstract

The present invention relates to an insulating, environment-friendly coating for non-oriented electrical steel, which belongs to the technical field of electrical steel coatings. The coating contains the following ingredients calculated according to the dry weights of the substances: 20 percent to 60 percent of dihydric phosphate; 20 percent to 40 percent of acrylate emulsion; 2 percent to 20 percent of boracic acid; 0.5 percent to 15 percent of silicasol; 0 percent to 5 percent of diethylene glycol monobutyl ether; all are weight percentages. The coating of the present invention is an environment-friendly coating which does not contain chrome; the coating, the surface of which is shiny and uniform, has good insulating property, adhesive property, rust-resisting property and heat-resisting property; moreover, the coating has good wetting property and is characterized by convenient coating and little foam amount.

Description

technical field [0001] The invention belongs to the technical field of electrical steel coatings, in particular to an insulating and environmentally friendly coating for non-oriented electrical steels. Background technique [0002] Electrical steel sheet is an important magnetic material, and non-oriented electrical steel is widely used in the iron core of motors such as electric motors, generators, and small transformers. When manufacturing iron cores, it is necessary to continuously punch and cut electrical steel sheets into iron core-shaped blanks, and fix the edges of a certain number of stacked chips by welding. In order to reduce eddy current loss, an insulating coating is applied to the surface of the steel plate to insulate the layers from each other. [0003] Coating is the last process of electrical steel production. The type, process and quality of coating will have a significant impact on the mutual insulation, adhesion, punching, weldability and corrosion resis...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/25
Inventor 耿立王崇学王全礼罗文彬周谊军
Owner SHOUGANG CORPORATION
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