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A kind of LED display cabinet spraying method

A technology for LED display screens and cabinets, which is applied to coatings, devices for coating liquid on the surface, and special surfaces, etc. It can solve the problems of poor electromagnetic shielding effect and lack of electromagnetic shielding for display cabinets, and achieve corrosion resistance Enhanced ability, good electromagnetic shielding effect, and effect of avoiding radiation

Active Publication Date: 2016-08-17
山西久讯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is: to provide a method for spraying LED display cabinets, which solves the problem in the prior art that the LED display cabinets do not have electromagnetic shielding or have poor electromagnetic shielding effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0050] A method for spraying an LED display cabinet, comprising the steps of:

[0051] Step 1, molding the cast iron into a box structure;

[0052] Step 2. Clean the cast iron box structure to remove surface dust;

[0053] Step 3, spray an aluminum powder layer on the outer surface of the box;

[0054] Step 4. Set grounding solder joints on the aluminum powder layer of the box body, one ground solder joint is set on each box body, the ground solder joints are arranged on the back of the box body, and a protective layer is set on the ground solder joints;

[0055] Step 5, surface sandblasting on the inner surface of the box body and the aluminum powder layer;

[0056] Step 6, after a period of time, carry out pickling and phosphating; the pickling uses 5% dilute hydrochloric acid, and the pickling time is 5 minutes; the phosphating uses PZn-9, and the phosphating time is 5 minutes, and the phosphating The temperature was 45°C.

[0057] Step 7, spraying plastic on the surfac...

specific Embodiment 2

[0060] A method for spraying an LED display cabinet, comprising the steps of:

[0061] Step 1. Aluminum compression molding into a box structure;

[0062] Step 2. Clean the aluminum box structure to remove surface dust;

[0063] Step 3, spray an aluminum powder layer on the outer surface of the box;

[0064] Step 4. Set grounding solder joints on the aluminum powder layer of the box body, one ground solder joint is set on each box body, the ground solder joints are arranged on the back of the box body, and a protective layer is set on the ground solder joints;

[0065] Step 5, surface sandblasting on the inner surface of the box body and the aluminum powder layer;

[0066] Step 6, after a period of time, pickling and phosphating are carried out; the pickling uses 10% dilute hydrochloric acid, and the pickling time is 2 minutes; the phosphating uses PZn-9, and the phosphating time is 10 minutes. The temperature is 40°C.

[0067] Step 7, spraying plastic on the surface of th...

specific Embodiment 3

[0070] A method for spraying an LED display cabinet, comprising the steps of:

[0071] Step 1, molding the cast iron into a box structure;

[0072] Step 2. Clean the cast iron box structure to remove surface dust;

[0073] Step 3, spray an aluminum powder layer on the outer surface of the box;

[0074] Step 4. Set grounding solder joints on the aluminum powder layer of the box body. Two grounding solder joints are set on each box body. A protective layer is provided on the grounding solder joint;

[0075] Step 5, surface sandblasting on the inner surface of the box body and the aluminum powder layer;

[0076] Step 6, after a period of time, carry out pickling and phosphating; the pickling uses 7% dilute hydrochloric acid, and the pickling time is 6 minutes; the phosphating uses PZn-9, and the phosphating time is 6 minutes, and the phosphating The temperature was 43°C.

[0077] Step 7, spraying plastic on the surface of the box body after pickling and phosphating;

[0078...

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PUM

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Abstract

The invention discloses an LED (Light-Emitting Diode) display screen box spraying method. The method comprises the following steps: pressing a metal material into a box structure; cleaning the box, spraying an aluminum powder layer, setting a ground welding point, protecting the ground welding point in sequence, spraying sand onto the surface, performing acid washing and phosphorization, performing plastic spraying on the surface, and coating resin. The aluminum powder layer is arranged on the box, and a ground point is arranged on the aluminum powder layer, so that the box can be grounded effectively, a very good electromagnetic shielding effect is achieved, and radiation is avoided. The box treated by adopting the method has high corrosion resistance, and is prevented from getting rusty easily; moreover, the black color of the box does not fade, electronic elements of an LED display screen are effectively protected, and the service life of an LED display screen is prolonged.

Description

technical field [0001] The invention belongs to the application field of electronic products, and in particular relates to an LED display driving circuit. Background technique [0002] At present, the design of the LED display frame structure is determined by the installation requirements of the display screen, the size of the display area and the color of the surrounding environment. On the premise of ensuring sufficient installation strength, the installation weight of the display screen should be reduced as much as possible. [0003] There are usually three methods for the outer frame of the indoor display screen: black aluminum alloy, aluminum alloy outsourcing stainless steel (matte, bright) and gold integration. [0004] The black aluminum alloy frame has a simple structure, and the color of the frame is close to the background color of the display screen. [0005] Aluminum alloy outsourcing stainless steel frame, brushed stainless steel, beautiful and generous. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/00B05D7/14B05D3/10
Inventor 沈智广
Owner 山西久讯科技有限公司
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