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Secondary coating method for biological conversion film metal plate

A biotransformation and secondary coating technology, which is applied in coatings, devices for coating liquid on the surface, and surface pretreatment, etc., can solve the problem of poor bonding between the secondary coating film and the metal plate, and easy foaming or peeling off , affect the overall quality and other issues, to achieve the effect of clean production, eliminate emissions, and save processing resources

Inactive Publication Date: 2018-06-05
宁波源溯物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the surface of the metal plate needs to be cleaned before the secondary coating. The cleaning process is to immerse the metal plate in cleaning media such as hydrochloric acid or sulfuric acid. Dirt, after the surface of the metal plate is cleaned, it is necessary to apply a second film in time, otherwise the metal plate will be polluted again, which will not only cause economic losses, but also complicate the subsequent processing steps
The bonding force between the secondary coating film and the metal plate is not good, and it is easy to foam or fall off, which affects the overall quality

Method used

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Examples

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Embodiment Construction

[0013] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the examples. The following examples are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0014] The invention discloses a method for secondary coating of a metal plate with a bioconversion film. The metal plate with a bioconversion film is taken; at normal temperature or at a temperature ≥ 45°C, the optimal temperature is 45°C, and the metal plate with a bioconversion film is placed in weak alkali Soak in the cleaning agent for 3-5 minutes; take the bioconversion film metal plate out of the cleaning agent, rinse with tap water for 3-5 minutes, the temperature of the tap water is ≥ 45°C or normal temperature, the best temperature is 45°C; squeeze or blow dry the biological The residual water on the surface of the conversion coating metal plate provides a c...

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PUM

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Abstract

The invention discloses a secondary coating method for a biological conversion film metal plate. The method comprises the steps of taking the biological conversion film metal plate; putting the biological conversion film metal plate into a weak alkaline cleaning agent for soaking for 3-5 minutes at a normal temperature or the temperature larger than or equal to 45 DEG C; taking out the biologicalconversion film metal plate from the weak alkaline cleaning agent, and rinsing the biological conversion film metal plate with tap water for 3-5 minutes, wherein the temperature of the tap water is greater than or equal to 45 DEG C or equals to the normal temperature; extruding or blow-drying the residual water on the surface of the biological conversion film metal plate so as to provide a clean surface for a secondary coating; drying the biological conversion film metal plate; carrying out the secondary coating on the biological conversion film metal plate, and adopting paint or powder for coating, wherein the coating temperature is 180-300 DEG C; and finally, drying the biological conversion film metal plate subjected to the secondary coating, wherein the drying temperature ranges from 180 DEG C to 300 DEG C. The method has the advantages that process steps are few, the energy is saved, the processing resources are saved, and the emission caused by the secondary coating is reduced.

Description

technical field [0001] The invention relates to a method for secondary coating of a biological transformation film metal plate. Background technique [0002] At present, the surface of the metal plate needs to be cleaned before the secondary coating. The cleaning process is to immerse the metal plate in cleaning media such as hydrochloric acid or sulfuric acid. Dirt, after the surface of the metal plate is cleaned, it is necessary to apply a second film in time, otherwise the metal plate will be polluted again, which will not only cause economic losses, but also complicate the subsequent processing steps. The bonding force between the secondary coating film and the metal plate is not good, and it is easy to bubble or fall off, which affects the overall quality. Contents of the invention [0003] The purpose of the present invention is to overcome the above deficiencies and provide a method for secondary coating of biological conversion film metal plates with less process ...

Claims

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Application Information

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IPC IPC(8): B05D3/10B05D3/02B05D1/38
CPCB05D3/102B05D1/38B05D3/0254
Inventor 祝健
Owner 宁波源溯物联科技有限公司