Electrostatic spraying process for aluminum alloy profiles

An aluminum alloy profile, electrostatic spraying technology, applied in metal material coating process, coating, device for coating liquid on the surface, etc., can solve the problems of unsatisfactory coating adhesion, poor wear resistance, etc., to reduce friction coefficient, acid resistance improvement, and the effect of enhancing compactness

Active Publication Date: 2019-09-27
河源市益豪塑胶五金电子制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing electrostatic spraying process of aluminum alloy profiles has problems such as unsatisfactory adhesion and poor wear resistance of the obtained coating.

Method used

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  • Electrostatic spraying process for aluminum alloy profiles
  • Electrostatic spraying process for aluminum alloy profiles
  • Electrostatic spraying process for aluminum alloy profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, a kind of electrostatic spraying process of aluminum alloy profiles

[0042] The electrostatic spraying process of the aluminum alloy profile, the steps are as follows:

[0043]S1 Grind the surface of the aluminum alloy twice, use 400# water sandpaper for the first time, and use 800# water sandpaper for the second time, spray water, spray temperature is 55°C, spray pressure is 0.1MPa, spray time For 1min, blow dry to get the workpiece to be processed;

[0044] S2 Place the workpiece obtained in step S1 in a degreasing agent to degrease, soak for 1 min, and then spray the degreasing agent on the surface of the workpiece to be treated. The spraying temperature is 55°C, the spraying pressure is 0.1 MPa, and the spraying time is 1 to 3 minutes. , and then spray and wash the surface of the workpiece to be treated, the spray temperature is 60°C, the spray pressure is 0.1MPa, the spray time is 1min, and the degreased workpiece is obtained;

[0045] S3 Soak the ...

Embodiment 2

[0058] Embodiment 2, a kind of electrostatic spraying process of aluminum alloy profiles

[0059] The electrostatic spraying process of the aluminum alloy profile, the steps are as follows:

[0060] S1 Grind the surface of the aluminum alloy twice, use 400# water sandpaper for the first time, and use 800# water sandpaper for the second time, spray water, spray temperature is 70°C, spray pressure is 0.1MPa, spray time For 3min, blow dry to get the workpiece to be processed;

[0061] S2 Place the workpiece obtained in step S1 in a degreasing agent to degrease, soak for 3 minutes, and then spray the degreasing agent on the surface of the workpiece to be treated. The spraying temperature is 65°C, the spraying pressure is 0.1MPa, and the spraying time is 1 to 3 minutes. , and then spray and wash the surface of the workpiece to be treated, the spray temperature is 70°C, the spray pressure is 0.1MPa, and the spray time is 3min to obtain the degreased workpiece;

[0062] S3 Soak the...

Embodiment 3

[0073] Embodiment 3, a kind of electrostatic spraying process of aluminum alloy profiles

[0074] The electrostatic spraying process of the aluminum alloy profile, the steps are as follows:

[0075] S1 Grind the surface of the aluminum alloy twice, use 400# water sandpaper for the first time, and 800# water sandpaper for the second time, spray water, spray temperature 65℃, spray pressure 0.1MPa, spray time For 2min, blow dry to get the workpiece to be processed;

[0076] S2 Put the workpiece obtained in step S1 in a degreasing agent to degrease, soak for 2 minutes, then spray the degreasing agent on the surface of the workpiece to be treated, the spraying temperature is 60 ° C, the spraying pressure is 0.1 MPa, and the spraying time is 2 minutes, then Spray and wash the surface of the workpiece to be treated, the spray temperature is 65°C, the spray pressure is 0.1MPa, and the spray time is 2min to obtain the degreased workpiece;

[0077] S3 Soak the degreased workpiece obta...

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Abstract

The invention belongs to the technical field of aluminum alloy profiles and particularly relates to an electrostatic spraying process for aluminum alloy profiles. The electrostatic spraying process for the aluminum alloy profiles comprises steps as follows: surfaces of aluminum alloys are polished, sprayed with water, washed and dried; a to-be-processed workpiece is degreased, sprayed with water and washed; the degreased workpiece is subjected to oil removal, sprayed with water and washed; the surface of the workpiece subjected to oil removal is sprayed with a diluted surface conditioner; the workpiece subjected to surface conditioning is phosphorized, the phosphorized workpiece is passivated, the surface of the passivated workpiece is sprayed with water and washed, the workpiece is dried and cooled, and the dried workpiece is obtained; the surface of the dried workpiece is sprayed with powdery paint in an electrostatic spraying manner by a spray gun and left to stay still, and the workpiece which is sprayed and left to stay still is obtained; the workpiece which is sprayed and left to stay still is conveyed to a baking room and then cooled to the room temperature. With the adoption of the electrostatic spraying process for the aluminum alloy profiles, the adhesive force, the hardness, the wear resistance, the acid resistance and other performance of surface coatings are remarkably improved, and the service life of the aluminum alloy profiles is prolonged effectively.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy profiles, and in particular relates to an electrostatic spraying process for aluminum alloy profiles. Background technique [0002] Aluminum and its alloys have many excellent properties such as good processing performance and light weight, and are widely used in aerospace, automobile manufacturing, building profiles, household appliances, electronic equipment, toys and other fields. However, aluminum has high chemical activity and is easily corroded, which affects its performance and greatly limits the popularization and application of aluminum alloys. Therefore, it is necessary to carry out surface protection treatment on aluminum alloys. At present, the most commonly used surface protection treatment method for aluminum alloys in industrial production is pre-chromate treatment and then electrostatic powder coating. Chromate conversion coatings can effectively improve the corrosion resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/12B05D3/10B05D3/02B05D3/00C23C22/42C23G3/00
CPCB05D3/002B05D3/0254B05D3/102B05D3/12B05D7/14B05D2202/25B05D2301/00B05D2320/00B05D2504/00B05D2508/00C23C22/42C23G3/00B05D2401/32
Inventor 李好
Owner 河源市益豪塑胶五金电子制品有限公司
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