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Coating process for applying water paint to elevator door and door pocket sheet metal parts

A coating process and technology for sheet metal parts, applied in electrolytic coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems of uneven paint film, low coating efficiency, large overspray, etc., and achieve Coating production height, improvement of product quality and production efficiency, effect of coating production automation

Inactive Publication Date: 2017-05-10
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The spraying process of traditional water-based paint mainly includes air spraying, airless spraying and mixed spraying. It is a refinishing painting workshop, but it is prone to shortcomings such as large amount of overspray, uneven paint film, low painting efficiency and large amount of waste during the painting process

Method used

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  • Coating process for applying water paint to elevator door and door pocket sheet metal parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Pre-treatment: Spray pre-degreasing for 1 minute and degreasing for 5 minutes on the surface of the elevator door and door cover sheet metal. The construction method is spray, the spray pressure is 0.1MPa, and the working temperature is 55±5℃. Alkalinity at 25pt. Then perform the first water washing in the water washing tank, that is, spray and wash with deionized water for 2 minutes, and wash away the residue after the degreasing treatment on the substrate. Then use a surface conditioner with pH=8 for surface adjustment, and then use a phosphating solution with a total acidity of 20pt, a free acidity of 0.8pt and an accelerator concentration of 3pt to phosphate the substrate for 5 minutes. The phosphating process uses spraying In this way, a uniform layer of gray phosphating film that is not easy to rust is formed on the surface of the sheet metal, followed by a second washing in the washing tank, and spray cleaning with deionized water, and the cleaned substrate i...

Embodiment 2

[0026](1) Pretreatment: Spray pre-degreasing for 1.5 minutes on the surface of the elevator door and door cover sheet metal, and degrease for 3 minutes. The construction method is spraying, the spraying pressure is 0.15MPa, and the working temperature is 55±5°C , the alkalinity is 0.28pt. Then perform the first water washing in the water washing tank, that is, spray and wash with deionized water for 2 minutes, and wash away the residue after the degreasing treatment on the substrate. Then use a surface conditioner with pH = 8 for surface adjustment, and then use a phosphating solution with a total acidity of 24pt, a free acidity of 1.0pt, and an accelerator concentration of 3pt to phosphate the substrate for 3 minutes. The phosphating process uses spraying In this way, a uniform layer of gray phosphating film that is not easy to rust is formed on the surface of the sheet metal, and then the second washing is carried out in the washing tank, that is, the deionized water spray c...

Embodiment 3

[0031] (1) Pre-treatment: Spray pre-degreasing the surface of the elevator door and door cover sheet metal parts for 1min, degreasing for 5min, the construction method is spraying, the spraying pressure is 0.15MPa, and the working temperature is 55±5°C. Alkalinity at 20pt. Then perform the first water washing in the water washing tank, that is, spray and wash with deionized water for 2 minutes, and wash away the residue after the degreasing treatment on the substrate. Then use a surface conditioner with pH=8 for surface adjustment, and then use a phosphating solution with a total acidity of 20pt, a free acidity of 1.0pt, and an accelerator concentration of 3pt to phosphate the substrate for 5 minutes. The phosphating process uses spraying In this way, a uniform layer of gray phosphating film that is not easy to rust is formed on the surface of the sheet metal, and then the second washing is carried out in the washing tank, that is, the deionized water spray cleaning process is...

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Abstract

The invention discloses a coating process for applying water paint to an elevator door and door pocket sheet metal parts. The process sequentially comprises the following steps: firstly, pretreatment is carried out, wherein the surface of the elevator door and the surfaces of the door pocket sheet metal parts are sequentially subject to pre-degreasing, degreasing, primary washing, surface conditioning, phosphorization and secondary washing, a uniform gray phosphating film not prone to rusting is generated on the surface of a workpiece, and then an electrophoretic primer coating system is used for conducting operation; secondly, anticorrosive primer is applied in an electrophoretic painting manner; thirdly, a high-pressure electrostatic spraying manner is adopted to spray water-based top-coat or water-based top-coat and water-based finishing paint. According to the process, the water paint can be effectively applied to coating of the elevator door and the door pocket sheet metal parts, the environmental harm and potential safety hazard, caused by the traditional coating process, of the elevator door and the door pocket sheet metal parts can be solved, meanwhile, same-line production of electrophoretic primer and water-based top-coat can be achieved, high automation of coating production can be achieved, the coating process is environment-friendly, and the coating product quality and the production efficiency can be obviously improved.

Description

technical field [0001] The invention relates to a water-based paint coating process, in particular to a water-based paint coating process applied to elevator doors and door cover sheet metal parts. Background technique [0002] Elevator is an indispensable vertical means of transportation in modern buildings, and occupies a very important position in people's daily life. With the development of society and the improvement of living standards, people have more and more decorative requirements for civil elevators. high. As the protective coat of the elevator, the coatings used for the elevator door and door casing sheet metal parts have high requirements, many varieties, large dosage, and need to have unique construction performance and coating performance. The quality of the coating film, such as appearance, The pros and cons of gloss and so on are people's intuitive evaluation of the quality of the elevator, which directly determines the grade of the building complex. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/10B05D1/04C25D13/12
CPCB05D1/04B05D3/102B05D7/14C25D13/12
Inventor 姚煌许奕祥张红谢唯
Owner GUANGZHOU KINTE IND
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