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Method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips

A technology of oriented silicon steel and a coating method, which is applied to the device and coating of the surface coating liquid, can solve the problems of unevenness and unevenness of magnesium oxide, and achieve the effects of high product quality, stable spraying, and convenient maintenance

Active Publication Date: 2012-07-11
无锡华精新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a method for coating magnesium oxide on the surface of an oriented silicon steel strip, which solves the problem of unevenness and unevenness of the magnesium oxide coated on the surface of the existing oriented silicon steel strip, prevents the magnesium oxide supply equipment from being blocked, is continuous and stable, and improves product quality

Method used

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Embodiment 1

[0028] The following process technology and structural parameters are adopted:

[0029] 1. The width of the oriented silicon steel strip coated with magnesium oxide is 650mm;

[0030] 2. The viscosity (25°C) of the coated magnesium oxide is 11s;

[0031] 3. The quality of magnesium oxide used is heavy magnesium oxide;

[0032] 4. The belt speed is 15m / min;

[0033] 5. The coating amount of magnesium oxide is 6g / m 2 ;

[0034] 6. The material of the liquid supply nozzle is 1Cr18Ni9;

[0035] 7. The specification of the stainless steel cold drawn nozzle is ￠60×2.0mm;

[0036] 8. A long slit is set on the stainless steel cold drawn nozzle.

[0037] 9. The length of the long slot is 150mm wider than the width of the grain-oriented silicon steel strip coated with magnesium oxide.

[0038] 10. The seam width of the long seam is 2.5mm.

Embodiment 2

[0040] The following process technology and structural parameters are adopted:

[0041] 1. The width of the oriented silicon steel strip coated with magnesium oxide is 600mm;

[0042] 2. The viscosity (25°C) of the coated magnesium oxide is 12s;

[0043] 3. The quality of magnesium oxide used is heavy magnesium oxide;

[0044] 4. The belt speed is 25m / min;

[0045] 5. The coating amount of magnesium oxide is 8g / m 2 ;

[0046] 6. The material of the liquid supply nozzle is 1Cr17Ni9;

[0047] 7. The specification of the stainless steel cold drawn nozzle is ￠60×2.0mm;

[0048] 8. A long slit is set on the stainless steel cold drawn nozzle.

[0049] 9. The length of the long slot is 200mm wider than the width of the grain-oriented silicon steel strip coated with magnesium oxide.

[0050] 10. The seam width of the long seam is 2.8mm.

Embodiment 3

[0052] The following process technology and structural parameters are adopted:

[0053] 1. The width of the oriented silicon steel strip coated with magnesium oxide is 620mm;

[0054] 2. The viscosity (25°C) of the coated magnesium oxide is 10s;

[0055] 3. The quality of magnesium oxide used is heavy magnesium oxide;

[0056] 4. The belt speed is 20m / min;

[0057] 5. The coating amount of magnesium oxide is 5g / m 2 ;

[0058] 6. The material of the liquid supply nozzle is 1Cr18Ni9;

[0059] 7. The specification of the stainless steel cold drawn nozzle is ￠60×2.0mm;

[0060] 8. A long slit is set on the stainless steel cold drawn nozzle.

[0061] 9. The length of the long slot is 180mm wider than the width of the grain-oriented silicon steel strip coated with magnesium oxide.

[0062] 10. The seam width of the long seam is 3.0mm.

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Abstract

The invention discloses a method for coating magnesium oxide on surfaces of grain-oriented silicon steel strips, which includes feeding a grain-oriented silicon steel strip to be coated with magnesium oxide between two coating rolls and then spraying magnesium oxide onto the grain-oriented silicon steel strip by a magnesium oxide supply device. The width of the grain-oriented silicon steel strip to be coated ranges from 600mm to 650mm, the viscosity of magnesium oxide ranges from 10s to 12s at the temperature of 25 DEG C, the strip passing rate ranges from 15m / min to 25m / min, and the coating quantity of magnesium oxide ranges from 4g / m2 to 8g / m2. Continuity and stability of the magnesium oxide supply device can be guaranteed, the problem of uneven coating is solved, the grain-oriented silicon steel strips can be coated uniformly by the method, and the percent of pass is high.

Description

technical field [0001] The invention relates to a method for coating magnesium oxide on the surface of an oriented silicon steel strip, which is applied to the coating of magnesia on the surface of an oriented silicon steel strip, and belongs to the technical field of functional magnetic materials. Background technique [0002] Oriented silicon steel strip is a new type of functional magnetic material. Because of its high resistance, the electric energy consumed on the iron core is small during operation; because its magnetization has strong directionality, the magnetic field in the desired direction High sensitivity, high utilization rate of iron core, high operating efficiency, cold-rolled oriented silicon steel strip is the most critical and important iron core material in electromagnetic directional conversion products such as transformers and transformers, the production technology level of cold-rolled oriented silicon steel strip, directly It is related to the upgradin...

Claims

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Application Information

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IPC IPC(8): B05D1/28
Inventor 龚建达
Owner 无锡华精新材股份有限公司
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