Everything about Rubber Paint on Portable LED Work Lights

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Everything about Rubber Paint on Portable LED Work Lights

This is a professional introduction About How to Manufacture Rubber Paint on Portable LED Work Lights.

portable led work lights rubber painting

Rubber paint can be shock-proof protection for ABS-made portable led work lights.
While What is rubber painting? What is the manufacturing procedure in China factory?
This article is telling you all the details.

 

Table of Contents
1 Scope
2 Paint manufacturers and types of led work lights
3 Equipment and tools
4 Preparation before painting on portable work lights
5 Painting process
6 Paint inspection method
7 Painting environment parameters and site requirements
8 The notes of make rubber painting on led work lights in winter

 

1 Scope of Rubber painting portable led work lights in China.

China portable Slim led work lights supplier slim led hand lamp for auto from China Slim led work light China supplier USB Rechargeable led work light led work light from China

This specification specifies various painting requirements for paint treatment and the required paint materials and operating procedures. This specification is applicable to the treatment of metal castings and metal parts anti-corrosion decorative paints of portable LED work light exporter and manufacture Key Tool Electrical Appliance Co, ltd; when there are special requirements for product design documents, the design documents and technical documents shall be implemented.

 

2 Paint manufacturers and types

Manufacturer: Key Tool Electrical Appliance Co., Ltd
Theme: China manufacture of portable led work light/LED Hand Lamp/portable led inspection lights tells you how to manufacture rubber painting on portable led lights products in China factory.

International category:
1) Primer: Epoxy paint
2) Medium paint: epoxy paint
3) Topcoat: polyurethane topcoat

 

3 Equipment and tools:

1) Water curtain, air exhaust device, air inlet device, work cart, and hanger.
Oil adjustment scale: There are a scale and number on the oil adjustment scale; when adjusting oil, it is used to measure the paint, curing agent and thinner added in the specified proportion. The oil adjustment scale can also be used to stir paint and open the lid of the container.

2) Viscosity cup and stopwatch: used to check the viscosity of the paint. It is generally measured in the domestic -4 cups, the unit is second; the viscosity of the paint when measuring the state of use can determine whether it is suitable at the current ambient temperature.

3) Paint filters are available in metal, fiber cloth, and paper. Metal and fiber cloth can be used for many times and should be cleaned after each use. The paper filter can only be used once. The purpose of the filter after dilution of the paint is to filter out the impurities in the paint to improve the spray.

4) Sticky cloth: It is a cloth that is viscous and not dry. It is used to remove dust or paint dust on the surface of the portable led work lights before spraying, but it cannot be used to clean oil and water. Unused sticky cloth shall be placed in a container with a lid sealed and shall be placed in a waste cardboard box with a lid after use.

5) Scraper: used to fill the filler at the position where the surface to be repaired is recessed. The scraper material usually has two kinds of film and steel sheet. When using, select the appropriate scraper according to the shape and size of the surface to be repaired.

6) Sandpaper: The mesh number is usually printed on the back of the sandpaper. The larger the number, the finer the friction particles. The number of meshes used in the repair of the portable led work lights should be between 60#-2000#.

1

Sandpaper size when grinding: Abrasive grain size Main use occasions
24

40

60

80

120

150

180

240

280

400

600

800~1000

1200~1500

1200μ

600μ

400μ

300μ

170μ

150μ

120μ

80μ

65μ

40μ

25μ

15-20μ

More than 10μ

 

Old paint stripping

 

 

Old paint stripping

Hairdressing, feathery

 

 

Primer treatment and vehicle grinding

 

Primer grinding

 

Crude wax pretreatment

 

2

Choice of sandpaper during dry grinding:

Sandpaper Size #60  #80  #120  #180  #240  #320  #600  #1000  #1500  #2000
uses
Clear paint>Sanding/feather> Polishing intermediate paint > Polish after topcoat > Putty polishing

 

7) Grinding machine: The grinding machine is driven by compressed air or electric power. The speed is in the range of 4000-12000 rpm. It needs to be used together with the sand disc.
1 grinding machine type
★ A disc-type grinding machine: the form of rapid rotation centered on the midpoint of the disc. Used to remove old paint film and prepare for work before welding.
★ Rolling type grinding machine: The entire disc vibrates like a circular arc. Mainly used to polish putty (putty).
★Double-acting grinding machine: The entire disc is like a small arc-like vibration, and it will rotate. Mainly used to polish beveled edges and putty.

 

4 Preparation before painting

4.1 Painting site requirements:

4.1.1 The workplace should be cleaned before painting. Equipment, vehicles, portable led work lights, etc. entering the painting workshop should be cleaned beforehand; when the dust is large, it needs to be separated from water and ash.
4.1.2 The temperature of the painting construction workshop should be 15 °C ~ 35 °C, the optimal temperature range is 20 °C ~ 30 °C, the outdoor construction should not be lower than 5 °C, the relative humidity is below 80%.
4.1.3 The paint construction workshop should have good lighting and natural lighting. The painting site should have sufficient light or good lighting. The rest of the lighting equipment should have explosion-proof devices. The painting operation should be carried out in a factory with good ventilation conditions to prevent dust from entering the factory. The spray booth should maintain positive pressure to meet the construction process requirements.

 

4.2 Pre-paint treatment:

1) Thoroughly remove surface defects such as burrs, sand, flash, welding slag, splashes, etc.;
2) If the portable led work lights needs to be phosphatized, it needs a uniform phosphating layer, dry, no re-rusting, and generally paint within 48 hours;
3) According to the requirements of the portable led work lights after shot blasting or sand blasting, the cleaning process should be carried out, the surface should be clean, dry, free from impurities, oil and dust, and the matching primer should be applied within 8 hours;
4) Before painting, the non-painted machined surface should be effectively protected by oil seal paper, or tape and paper. The inner wall of the portable led work lights and the floor covering (patch) protective material should be kept clean to prevent sandblasting or paint fog condensation particles from falling on the portable hand lights. On the painted parts. It is true that the surface of different portable led work light is sandblasted to achieve a certain roughness to increase the adhesion of the paint. After blasting thoroughly cleaned, the gaps in the portable hand lights and the dust at the corners must be cleaned up.

 

4.3 Inspection of equipment before painting:

1) The spray gun and corresponding equipment should be cleaned and should be in normal working condition.
2) Check if the spray gun produces the ideal spray shape, ideal spray, symmetric atomization and even edge cleaning. Only a small amount of paint mist particles can exist outside the spray edge.
3) Check whether the supporting air compressor capacity meets the working requirements, check whether it is working properly, and check whether the wind belt has air leakage.
4) Before painting, check whether the electrical equipment, wires, and power supply at the construction site are well insulated. The lighting should be protected glass.
5) Before painting, make the test procedure on portable led work light. After passing the test, spray the paint according to the standard of the test portable led work light.

 

4.4 Ash treatment:

4.4.1

Two basic processing time periods of the atomic ash, the first is to fill and repair before the primer is applied; the second is the second filling treatment after the primer or intermediate paint is coated and dried, The number of specific coatings depends on the surface roughness of the product.
4.4.2

After the putty is dried, use a power tool or hand to polish. The putty before the primer is polished with 150-320# sandpaper until the surface is smooth and flat. The atomic ash before the middle paint is used, and the grinding is 46-60# abrasive cloth. After sanding, the air chip must be used to clean the grinding debris.

4.4.3

Pre-paint protection:

Use masking paper and newspaper to paste and seal (steel plate temperature ≥16°C), junction (two paint color junctions) and no need to paint (such as glass, stainless steel parts, etc.) must be tightly sealed to prevent contamination by paint layer.

 

5  Portable led work lights Rubber Painting process

specific process:
Accepted work of coated portable led work lights → pre-paint treatment → putty treatment (once) → spray primer → putty treatment (secondary) → drying → spraying middle layer paint → drying → spraying topcoat → curing → pass the inspection and pass the next road Process.

5.1

Before the paint is prepared, the paint should be placed in the warehouse or storage location at the same temperature as the spray site one day in advance to make the paint consistent with the ambient temperature.

5.2

When mixing portable led work light, only the specified paint-based components and curing agent/diluent components should be used. In the case of mixing, the curing agent should be added to the paint. Do not add the paint to the curing agent/diluent and mix in proportion. After fully stirring, it should be allowed to stand for 15 to 30 minutes to achieve the purpose of ripening. The mixed paint should be used during the activation period. The paint exceeding the activation period must be discarded.

5.3

The compressed air used in the painting must use a water separator to remove moisture and oil. The oil-water separator should be cleaned frequently.

5.4

When painting a spray gun, the paint filter should be used to filter the paint to prevent large particles from clogging the spray gun.

5.5 Spraying operation skills:

handheld rechargeable led work lights work shop for rubber painting
1) The gun should be in motion before the trigger is turned;
2) Keep the distance between the spray gun and the portable led work lights constant, as shown in the following figure;
3) The spray gun should move at a constant speed during spraying;
4) When spraying the same portable led work lights, the starting point of the first spraying stroke should be the same;
5) The amount of overlap of adjacent spraying strokes remains the same;
6) For the same portable led work lights, the number of spray strokes should be consistent.

5.6 Gun stroke:

1) The trajectory of the gun is parallel to the surface of the portable led work lights;

2) The surface between the gun body and the portable led work lights is kept vertical, otherwise, the paint will be wasted;

3) Do not allow the spray gun to move in an arc. The operator should move the forearm and arms without moving the wrist;

4) The amount of overlap between adjacent sprays is 50% for ordinary air spray and 25% for airless spray;

5) Ordinary air atomization distance is: 25cm ~ 35cm, airless spray atomization is: 30cm ~ 40cm;

6) When the uniformity of the coating thickness is required to be high, the cross-spray method should be adopted, and the vertical direction should be sprayed first. Due to the wide variety of portable led work lights and coatings, the operator should combine these basic principles according to the actual situation to determine the suitable spraying. Methods and techniques.

7) Operation as shown below:
Rubber painting led work light operation 1

how to make rubber painting mechanic portble led work lightsrubber painting procedure

5.7 Quality Assurance Measures:

1) Use special products for each process;
2) The primer to be used should be used during the storage period. The overdue portable led work light must have corresponding procedures before they can be used. The storage and storage of all coatings should be carried out according to the corresponding regulations;
3) Solvents and diluents should meet the cleanliness requirements and use approved solvent solvents;
4) The surface of the bottom layer to be coated is covered according to the detailed requirements;
5) Unprimed parts should be covered before spraying;
6) Strictly observe the drying time of the coating interval;
7) Prior to spraying the topcoat, the applied primer should meet the coating control requirements;
8) The appearance of the coating should be flat and continuous without a defect such as coarse particles and leakage.

5.8

Coating film thickness requirements: See 1-1 paint type

5.9

Wash thoroughly after spraying with a spray gun such as a spray gun to increase the service life.

5.10

Cleaning:
After the construction is completed, the utensils and residual paints and solvents should be cleaned. The barrels with excess paint should be sealed with tight seals. The wiped gauze should be cleaned and the yarn ends should be properly stored and disposed of.

5.11

Note on painting:
1) The paint prepared by mixing should be used up within the specified time, otherwise, it will gel and fail.
2) Construction tools must be clean and dry.
3) During the process of painting and spraying, avoid contact with water, acid, alkali, alcohol, etc. The environment must be clean and dry.
4) The glued paint must not be applied to the portable led work lights after dilution.

1) Epoxy zinc-rich primer Interzinc388

The Interzinc 388 primer was thoroughly stirred by air spray and mixed with the curing agent. The mixing ratio was 4:1. After thoroughly mixing, add International GTA220 thinner, mixing ratio 4:1 (diluting according to temperature difference and actual conditions) Ratio of agent). Spray with a W-77 spray gun (adjust the size of the spray gun fan and air pressure according to product characteristics and spray distance to ensure uniform coating), adjust the spray thickness according to the conditions and temperature, and change the number of sprayed shots. After spraying, check whether the corner gap is coated to ensure anti-corrosion requirements.
The degree of drying according to different temperatures is as follows:

Temperature Surface to be Dry Totally Dry Minimun
5℃ 2H 10H 8H
15℃ 90min 6H 4H
25℃ 75min 4H 3H
40℃ 45min 2H 2H

 

Theoretical coating rate:

50μm~80μm
Spray layer 2~3
Speed ​​/ second 10-15cm
Pressure / MPa 5-7
Coating / liter 3.5-4m2

Packing specification: 10-liter group Interzinc388 base material 8 liters
Interzinc388 curing agent 2 liters

Storage method and expiration date: Akzo Nobel industrial paint can be stored for at least 12 months at 25 °C. After that, it should be inspected and used, stored in a dry, shaded place, away from heat and fire.

 

2) High-build epoxy paint (intermediate paint) Intergard 475 HS

The Intergard 475 HS paint was thoroughly stirred by air spray and mixed with the curing agent. The mixing ratio was 3:1. After thoroughly mixing, it was aged for 10-20 minutes. After curing, it was added with International GTA007 thinner. The mixing ratio was 4:1. (Adjust the diluent ratio according to the actual room temperature)
The degree of drying according to different temperatures is as follows:

Temperature Surface to be Dry Totally Dry Minimum

 

5℃ 90min 16H 16H
15℃ 75min 10H 10H
25℃ 60min 5H 5H

 

Theoretical coating rate:

90μm~110μm
Spray layer 2~3
Speed ​​/ second 10-15cm
Pressure / MPa 5-7
Coating / liter 3~3.5m2

Packing specification: 20 liters group Intergard 475 HS base material Packing 15 liters
Intergard 475 HS Curing Agent 5 liters
Storage method and expiration date: Akzo Nobel industrial paint can be stored for at least 12 months at 25 °C. After that, it should be inspected and used, stored in a dry, shaded place, away from heat and fire.

 

3) Polyurethane topcoat (high gloss) Interthane 990
The Interthane 990 paint can be thoroughly stirred by air spray and mixed with the curing agent. The mixing ratio is 6:1, thoroughly stirred and then aged for 10-20 minutes. After ripening, add International GTA733 thinner, mixing ratio 4:1 ( Adjust the diluent ratio according to the actual conditions)

The degree of drying according to different temperatures is as follows:

Temperature  Surface to be Dry

 

Totally Dry Minimum
     -5℃ 8H 60H 60H
5℃ 5H 24H 24H
15℃ 2.5H 10H 10H
25℃ 1.5H 6H 6H
40℃ 1H 3H 3H

Theoretical coating rate:

60μm~90μm
Spray layer 2~3
Speed ​​/ second 10-15cm
Pressure / MPa 5-7
Coating / liter 3~5.7m2

Packing specification: 20-litre group Interthane 990 base material loaded with 17.14 liters

Interthane 990 Curing Agent Packed 2.86 Litres

Storage method and expiration date: Akzo Nobel industrial paint can be stored for at least 12 months at 25 °C. After that, it should be inspected and used, stored in a dry, shaded place, away from heat and fire.

 

6 Spray paint inspection method

1) Test tool
★ A wallpaper knife
★Adhesive tape with the adhesion of 600 to 700 g·cm.
2) Test piece
★ The size of the test piece should allow 3 tests to be performed on each test piece with a minimum edge distance of 5 mm.
★ The surface to be coated should be clean. The surface preparation, operating conditions, drying of the paint film should be consistent with the conditions of use of the paint; the thickness of the paint film should be in the order of micrometers, and the accuracy should be ±10% or ±5μm of the minimum value.
★ The test piece should be aged before the test, that is, the test piece should be placed in a constant temperature and humidity room (temperature 23 ± 2 ° C, relative humidity 50% ± 5%) for at least two hours.
3) Grid test
★ Before each test, prepare a sharp cutter to make a 45° angle with the aged test piece. At least 10 parallel lines are drawn on the paint film, and the scratch depth is to expose the bottom plate with a line spacing of 1 mm. In the same manner, 10 parallel lines are drawn in the direction perpendicular to the above-mentioned 10 parallel lines to form a grid shape.
4) Pull out the paint film test
Stick to the grid with a piece of tape with the adhesion of 600-700 g·cm, gently press it with your fingers, so that there is no air bubble between the tape and the paint film, and then apply more pressure on the tape to adhere it. Firm.
The tape was quickly peeled off at an angle of 90 ° C, and the two samples to be compared were treated in the same manner. Check the paint film on the grid and rate it.

 

7 Painting environment parameters and site requirements:

1) The workplace should be cleaned before painting, and the equipment, vehicles, and portable led work lights entering the painting workshop should be cleaned up in advance.
2) The temperature of the painting construction workshop should be 15 °C ~ 35 °C, the optimal temperature range is 20 °C ~ 30 °C, and the relative humidity is below 80%.
3) The paint construction workshop should have good lighting and natural lighting. The painting site should have sufficient light or good lighting. The excess lighting equipment should have explosion-proof devices. The painting operation should be carried out in a factory with good ventilation conditions to prevent dust from entering the factory. The spray booth should maintain positive pressure to meet the construction process requirements.

how to rubber paint for mechanic led work lights

 

8 The notes of make painting for Portable led Work Lights in Winter

There are some problems with paint construction in winter.

Mainly because the winter climate is relatively harsh, the temperature is low, the wind speed is large, and various harsh climates such as frost, snow, fog, etc. often occur, which brings many restrictions to make rubber paint for portable led work lights in winter.

There are several points to note about the problems in winter construction:

First, paint selection: heavy anti-corrosion paint has certain requirements for temperature. The minimum construction/curing temperature of epoxy paints that are often used needs 10 °C, which is difficult to meet in winter. Therefore, before construction, appropriate paint can be selected according to the actual location of the project and the duration of the project. For winter construction, winter paint can be used. This type of paint can be applied at temperatures ranging from minus 5 ° C to 10 ° C or even lower.

Second, the use of additives: the impact of low temperature on the coating construction, mainly at low temperatures, the curing time of the paint film is too long, will affect the paint’s own chemical reactions. For some paints, additives can be used to shorten the curing time and achieve the curing effect; however, it will affect the performance of the paint itself.

The third is to carry out the construction in the painting workshop.

Not all types of paints have winter-type portable led work light; the use of additives will definitely affect the performance of the paint, and the use of additives is limited. In addition, the low temperature is only one of the factors affecting the construction of paint in winter. The general coating requirements for epoxy heavy-duty paints are relative humidity below 80%, good weather conditions, temperature 10 °C-35 °C, surface temperature 10 °C-50 °C and above the dew point of 3 °C, wind speed of 3 m / Less than seconds. It is difficult to meet these requirements in an outdoor environment in winter. Therefore, it is best to carry out winter construction in the painting workshop to avoid outdoor work.

For the paint shop, the following basic conditions are required:
1. The workshop is equipped with sufficient lifting equipment, and space is large, and the components can be moved and turned over for easy painting. Because the general industrial components are manpower that cannot be moved.

2. The workshop is equipped with sufficient ventilation equipment and can be dehumidified. As one of the important factors affecting the construction of the coating, the humidity must be controllable by the paint shop. And need to maintain air circulation, so as not to cause problems in paint curing and construction safety.

3. The workshop is equipped with sufficient heating equipment and can be insulated. For general coating temperature is about 30 ° C, it can be achieved by air conditioning. For paints with special requirements, the curing temperature must be controlled by the drying workshop.

4. The workshop must be composed of sandblasting workshop, painting workshop and drying workshop to facilitate the control of the construction process.

 

9 Painting hours needed for portable led work lights

1) Injection: 0-2mm gap: 3 minutes / m, 3-5mm gap: 5 minutes / m;
2) Spray paint (once): 3min/m2;
3) Paint grinding (once): 5min/m2;
4) Clean up: 2 min/m2.

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