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Technological method for electrostatic powder coating on stainless steel surface

A technology of electrostatic powder and process method, which is applied to the device for coating liquid on the surface, special surface, pretreatment surface, etc., which can solve the problems that cannot meet the actual use requirements, limit the application range of stainless steel, poor adhesion between coating film and stainless steel, etc. problems, to achieve the effect of easy control of surface quality, high work efficiency and saving working hours

Inactive Publication Date: 2012-04-25
SHENYANG YUANDA ALUMINUM IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its own organizational structure, stainless steel is sprayed with conventional electrostatic powder, and the adhesion between the coating film and stainless steel is poor. According to the national standard GB / T9286-1998 test method, the highest level can only reach level 2, which cannot meet the actual use requirements.
This limits the scope of application of stainless steel as a decorative material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take a stainless steel revolving door frame material as a sample, and conduct conventional electrostatic powder spraying on it. The specific steps are:

[0021] (1) The sample is polished with sandpaper to remove rust and scars on the surface;

[0022] (2) Rinse the polished sample with clear water, then dry and dehydrate;

[0023] (3) The sample of step (2) is carried out electrostatic powder spraying, coating selects the INTERPON D series powder coating that AKZO NOBEL company produces, color white, spraying pressure 0.4MPa, electrostatic voltage 30KV, spraying thickness 70 microns;

[0024] (4) Curing the sample in step (3) at a high temperature at a curing temperature of 200° C. for 20 minutes to prepare a sample with a white coating film on the surface.

[0025] The national standard GB / T9286-1998 cross-cut inspection method was used to test, and the adhesion between the sample coating film of this embodiment and the stainless steel surface was grade 2.

Embodiment 2

[0027] Get the same stainless steel revolving door frame material as a sample, adopt the process of the present invention to spray it, and the concrete steps are:

[0028] (1) Soak the sample in the ALUETCH degreasing solution produced by Henkel for 5 minutes to remove the surface oil;

[0029] (2) Rinse the degreased sample with clear water, then dry and dehydrate;

[0030] (3) Use a manual spray gun to spray N7111-1 Bico metal nano-treatment agent on the surface of the sample after the above treatment, the spraying pressure is 0.4MPa, and the spraying thickness is 4 microns;

[0031] (4) Curing the sample in step (3) once at a temperature of 180° C. for 20 minutes;

[0032] (5) The sample of step (4) is carried out electrostatic powder spraying, coating selects the INTERPOND series powder coating that AKZO NOBL company produces, color white, spraying pressure 0.4MPa, electrostatic voltage 30KV, spraying thickness 70 microns;

[0033] (6) The sample in step (5) was subjecte...

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Abstract

A technological method for electrostatic powder coating on a stainless steel surface comprises the steps that: stainless steel is placed into an acid degreasing fluid to remove the surface grease; the stainless steel which is removed with the grease is flushed by clean water, is dehydrated and aired; a metal nanometer finishing agent is painted onto the stainless steel surface; the primary high temperature solidification is carried out; the stainless steel surface after the primary solidification is undergone the conventional electrostatic powder coating; and the secondary high temperature solidification is carried out, so a finished product is produced. The technological method can produce stainless steel decorative materials of various colors, the adhesive forces of the coating and the stainless steel are improved to the zero level, and the practical use requirement is satisfied.

Description

technical field [0001] The invention relates to metal surface coating treatment, in particular to a process method for electrostatic powder spraying on the surface of stainless steel. Background technique [0002] Stainless steel is widely used in many fields such as construction, chemical industry, military and machinery because of its characteristics of corrosion resistance, weather resistance, flame retardancy and high strength. In some decoration projects, in order to overcome the defect that stainless steel is not coordinated with some surrounding occasions and environments due to its single color, it is often necessary to spray paint with various colors on the surface of stainless steel to achieve harmony and unity with the surrounding occasions and environmental colors. The effect, but also increase the stain resistance of stainless steel. However, due to its own organizational structure, stainless steel is sprayed with conventional electrostatic powder, and the adhe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/06B05D1/04B05D3/10B05D3/00
Inventor 吕立军
Owner SHENYANG YUANDA ALUMINUM IND GROUP
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