System and method for carrying out coating pretreatment of metallic workpiece

A metal workpiece, pre-treatment technology, applied in metal material coating process, device for coating liquid on the surface, pre-treatment surface, etc., can solve problems that need to be improved, and achieve the effect of improving efficiency and effect

Active Publication Date: 2012-06-27
HEFEI MIDEA REFRIGERATOR CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current pre-painting treatment process still needs to be improved

Method used

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  • System and method for carrying out coating pretreatment of metallic workpiece
  • System and method for carrying out coating pretreatment of metallic workpiece
  • System and method for carrying out coating pretreatment of metallic workpiece

Examples

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Embodiment 1

[0107] refer to Figure 5-8 , provides a method for automatic detection and control of the concentration of the metal coating pretreatment tank solution: a monitoring system composed of an upper industrial computer, a display screen and configuration software; a control system composed of a PLC and a touch screen; and the detection and feeding of each tank solution A method for automatic detection and control of the concentration of the metal coating pretreatment bath liquid composed of sub-systems of the device. Use the online free alkalinity automatic detection device to detect the pre-degreasing bath liquid containing alkali degreasing agent in metal pretreatment, and the free alkalinity of the degreasing bath liquid, and use the online pH automatic detection device to convert the film containing nano-ceramic conversion agent or silane treatment agent The method of detecting the water quality of the cleaning tank through the online automatic conductivity detection device, a...

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Abstract

The invention provides a system and a method for carrying out coating pretreatment of a metallic workpiece, wherein the system for carrying out coating pretreatment of the metallic workpiece comprises a pre-degreasing bath, a degreasing bath, a first rinsing bath, a skin membrane conversion slot and a second rinsing bath, a free alkalinity control system, a pH control system and a conductivity control system. The metallic workpiece can be carried out coating pretreatment effectively by using the system of the invention.

Description

technical field [0001] The invention relates to a pretreatment process for metal coating. Background technique [0002] In the production process of metal surface spraying in the coating industry, pretreatment is a very important link. The so-called pretreatment is to thoroughly clean the grease, dust and other dirt on the metal surface and form a film on the metal surface. The pre-treatment process is pre-degreasing with alkaline degreasing agent, degreasing, first combined water washing, film conversion with nano-ceramic treatment agent (or silane treatment agent), and second combined water washing process. In the pretreatment process, the concentration control in each treatment tank plays a very important role in the pretreatment quality and the final performance of the coating. [0003] However, the current pre-painting treatment process still needs to be improved. Contents of the invention [0004] The present invention aims to solve at least one of the technical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/10C23G3/00C23C22/73
Inventor 李晓军林罕陈松
Owner HEFEI MIDEA REFRIGERATOR CO LTD
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