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Process method of spraying water paint on surface of active metal piece

A technology of active metal and process method, which is applied in the direction of surface coating liquid device, pretreatment surface, coating, etc., which can solve the problems of rapid corrosion of water-based paint, temperature rise, and accelerated reaction speed of water and oxygen with metal, etc. , to achieve the effect of reducing oxygen content and slowing down corrosion

Inactive Publication Date: 2017-06-13
SHIJIAZHUANG LANHAI TOOL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of rapid corrosion of water-based paint, some manufacturers use drying methods, but the effect is not satisfactory
The reason is that heating speeds up the volatilization of water, but heating makes the temperature rise, and the temperature rise makes the reaction speed of water and oxygen and metal faster, and the rust problem still cannot be solved well.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Use a brush to clean the surface of the active metal workpiece, and remove metal shavings, sand, dust and other impurities on the surface of the active metal workpiece;

[0035] 2) Pour the water paint into the paint cup of the spray gun, then install the paint cup into the gun body, connect the nitrogen hose to the spray gun, and adjust the nitrogen output pressure to 0.45Mpa;

[0036] 3) Adjust the mist width, spray volume and air volume of the spray gun for trial spraying;

[0037] 4) Put the spray gun at a distance of 25cm from the surface of the active metal workpiece, spray water-based paint, the air pressure range of the spray gun is 0.5MPa when spraying, and reach the thickness required for spraying paint;

[0038] 5) After the spraying is completed, quickly place the active metal workpiece in a nitrogen drying box for drying within 20s. The temperature of the drying box is 50°C, and the drying time is 15 minutes. The humidity in the dry box is 10%, and the ...

Embodiment 2

[0040] 1) Use compressed gas to blow the surface of the active metal workpiece to remove metal shavings, sand grains, dust and other impurities on the surface of the active metal workpiece;

[0041] 2) Pour the water paint into the paint cup of the spray gun, then install the paint cup into the gun body, connect the nitrogen hose to the spray gun, and adjust the nitrogen output pressure to 0.50Mpa;

[0042] 3) Adjust the mist width, spray volume and air volume of the spray gun for trial spraying;

[0043] 4) Put the spray gun at a distance of 30cm from the surface of the active metal workpiece, spray water-based paint, and the air pressure range of the spray gun is 0.8MPa when spraying, and reach the thickness required for spraying paint;

[0044] 5) After the spraying is completed, put the active metal workpiece into the nitrogen drying box for drying within 10s. The temperature of the drying box is 40°C, and the drying time is 20 minutes. Continuously feed nitrogen into the ...

Embodiment 3

[0046] 1) Use compressed gas to blow the surface of the active metal workpiece to remove metal shavings, sand grains, dust and other impurities on the surface of the active metal workpiece;

[0047] 2) Pour the water paint into the paint cup of the spray gun, then install the paint cup into the gun body, connect the nitrogen hose to the spray gun, and adjust the nitrogen output pressure to 0.46Mpa;

[0048] 3) Adjust the mist width, spray volume and air volume of the spray gun for trial spraying;

[0049] 4) Put the spray gun at a distance of 35cm from the surface of the active metal workpiece, spray water-based paint, and the air pressure range of the spray gun is 0.7MPa when spraying, and reach the thickness required for spraying paint;

[0050]5) After the spraying is completed, put the active metal workpiece into the nitrogen drying box for drying within 20s. The temperature of the drying box is 45°C, and the drying time is 30 minutes. Continuously feed nitrogen into the d...

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Abstract

The invention discloses a process method of spraying water paint on the surface of an active metal piece and belongs to the technical field of paint spraying. The process comprises the following steps: 1) pre-treating the surface of the workpiece to eliminate metal filing, sand and dust impurities on the surface of the active metal workpiece; 2) pouring the water paint into a paint cup of a spray gun, and after the paint cup is mounted on the spray gun body, connecting a hose of protective gas to the spray gun, and adjusting the pressure of the protective gas; 3) performing trial-spraying adjustment on the spray gun; 4) spraying the water paint to the surface of the active metal workpiece by means of the spray gun until reaching the thickness required by spraying; and 5) after spraying, quickly putting the active metal workpiece into a nitrogen drying box to be dried, continuously introducing nitrogen into the drying box and controlling the humidity value in the drying box, and taking out the workpiece after the water paint is hard dry. The invention provides the process of spraying the water paint to the surface of the active metal workpiece and avoids a phenomenon of quick corrosion on the surface of a metal workpiece material.

Description

technical field [0001] The invention relates to a process method for spraying water-based paint on the surface of an active metal workpiece, belonging to the technical field of paint spraying. Background technique [0002] Paint has always been the main material for anti-corrosion decoration. It has the advantages of stable performance, wide application range, low cost, and convenient use. There are great dangers. With the strengthening of the state's environmental governance and safety production management, the use of paint has been greatly restricted, and practitioners' awareness of occupational hygiene has improved, and it has become difficult to recruit paint processing and use personnel. In this case, since water-based paint does not contain highly toxic and harmful ingredients, it is a green and environmentally friendly product. At the same time, water-based paint does not burn or explode, which improves the safety of processing, transportation, storage, and use. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/04B05D3/02
Inventor 许文强
Owner SHIJIAZHUANG LANHAI TOOL CO LTD
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