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Technology for rapidly and efficiently treating large-area poor paint sprayed parts

A treatment process and large-area technology, which can be used in devices for coating liquids on surfaces, coatings, chemical paint/ink removers, etc. The method is simple and convenient, the production cost is reduced, and the environmental pollution is small.

Inactive Publication Date: 2015-02-11
ZHEJIANG GEELY HOLDING (GROUP) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Large-scale grinding, manual grinding is labor-intensive, inconvenient to handle, and takes a long time
[0009] 2. After grinding, it will damage the steel plate of the body and make it thinner, which may cause the body or the polished parts to be scrapped
[0010] 3. When grinding a large-area plate, some parts are not easy to clean, which will affect the follow-up work. Moreover, the parts where the iron leakage is polished are easy to rust and there is a risk

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A fast and efficient large-area paint spraying defect treatment process, including the following steps in sequence:

[0034] 1) Prepare the parts with bad spraying;

[0035] 2) Use a protective plate to cover the area around the poorly sprayed parts, and pass out the parts to be treated; rub paraffin wax under the protective plate, and the amount of paraffin wax to be wiped is 0.05g / cm 2 , the protective plate is a soft PVC plate with a closed structure with a hole in the middle, and the inner side of the protective plate is arc-shaped,

[0036] 3) Spray liquid nitrogen along the inner edge of the protective plate, and spray paint remover within 10s after spraying liquid nitrogen;

[0037] 4) Then spray liquid nitrogen on the main part of the poorly sprayed part, and spray paint remover at the same time, the amount of paint remover is 0.5g / cm 2 ;

[0038] 5) After standing for 3-5 minutes, heat the main part of the poorly sprayed part, the heating temperature is 50 ℃...

Embodiment 2

[0042] A fast and efficient large-area paint spraying defect treatment process, including the following steps in sequence:

[0043] 1) Prepare the parts with bad spraying;

[0044] 2) Use a protective plate to cover the poorly sprayed parts, and pass out the parts to be treated; rub paraffin wax under the protective plate, and the amount of paraffin wax to be wiped is 0.1g / cm 2 , the protective plate is a soft PVC plate with a closed structure with a hole in the middle, and the inner side of the protective plate is arc-shaped,

[0045] 3) Spray liquid nitrogen along the inner edge of the protective plate, and spray paint remover within 3 seconds after spraying liquid nitrogen;

[0046] 4) Then spray liquid nitrogen on the main part of the poorly sprayed part, and spray paint remover at the same time, the amount of paint remover is 0.3 / cm 2 ;

[0047] 5) After standing for 3-5 minutes, heat the main part of the poorly sprayed part, the heating temperature is 65 ℃, keep for 1...

Embodiment 3

[0051] A fast and efficient large-area paint spraying defect treatment process, including the following steps in sequence:

[0052] 1) Prepare the parts with bad spraying;

[0053] 2) Use a protective plate to cover the poorly sprayed parts, and pass out the parts to be treated; wipe paraffin wax under the protective plate, and the amount of paraffin wax to be wiped is 0.08g / cm 2 , the protective plate is a soft PVC plate with a closed structure with a hole in the middle, and the inner side of the protective plate is arc-shaped,

[0054] 3) Spray liquid nitrogen along the inner edge of the protective plate, and spray paint remover within 7s after spraying liquid nitrogen;

[0055] 4) Then spray liquid nitrogen on the main part of the poorly sprayed part, and spray paint remover at the same time, the amount of paint remover is 0.4g / cm 2 ;

[0056] 5) After standing for 3-5 minutes, heat the main part of the poorly sprayed part, the heating temperature is 50-65 ℃, keep for 10...

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PUM

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Abstract

The invention relates to the field of automobile manufacture, in particular to a technology for rapidly and efficiently treating large-area poor paint sprayed parts. The technology adopts liquid nitrogen and paint remover combined treatment, accelerates the poor sprayed part treatment speed, and improves the treatment efficiency; after small-area parts are treated, edges are perfectly protected, and the degree of combination between the edges subjected to secondary spraying and an original paint film is convenient to enhance; the operation technology is simple, and the labor intensity is reduced; the poor sprayed parts are thoroughly cleaned.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, in particular to a fast and efficient large-area paint spraying defect treatment process. Background technique [0002] The automobile manufacturing process is divided into four major processes, stamping, welding, painting, and general assembly. The painting process is to electrophoresis, intermediate coating, and topcoat on the welded body-in-white, so that the "body-in-white" can be sprayed with added value. color. [0003] Automotive coatings can be simply divided into the following coatings: electrophoretic coatings, intermediate coatings, paint coatings, and varnish coatings. The functions and problems of each coating are as follows: [0004] Electrophoretic coating film: This coating film has anti-corrosion ability. If the coating effect is not good, it needs to be polished, but for large-area grinding and leaking iron, the car body will have the risk of rusting. On the other hand,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D1/32C09D9/04
Inventor 张凯王闯安聪慧冯擎峰
Owner ZHEJIANG GEELY HOLDING (GROUP) CO LTD
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