Improve performance
and sustainability

Experts in electrostatic powder coating line equipment and solutions.
From advanced powder spraying machines to powder spraying lines, we provide cutting-edge solutions to improve efficiency and quality for customers with powder coating equipment needs around the world.

01020304050607

Coating Production Lines

Air conditioner casing

Maximum workpiece passing size	20.61.2 (m)
Workpiece type	Air conditioning shell
Productivity	100,000 pieces/month
Pretreatment method	Spray pre-treatment
Spray room	PP large cyclone automatic powder room
Heating energy	Natural gas
Air supply	High-power circulation fan
Heat control	Variable temperature

We design and build an electrostatic coating production line for a lighting company. The coating products are mainly lighting accessories, with a monthly spraying volume of about 300,000 pieces. The company is positioned in the middle and high end of the market. Process flow: hanging workpieces - workpiece pretreatment (spraying) - entering the drying oven - drying completed and entering the powder coating room - powder coating - exiting the powder coating room and entering the curing oven - curing completed - cooling and removing the workpiece. The spray pretreatment process uses a high-pressure water pump to form a mist of the treatment liquid and evenly spray it onto the surface of the workpiece to achieve the effect of cleaning the workpiece. The spray pretreatment process can not only increase the processing speed, but also save energy.

Home Appliance Industry

The electrical electrostatic powder coating line uses eco-friendly electrostatic spraying to coat electrical products smoothly and uniformly. Widely used in the electrical industry, it includes an electrostatic generator, spray gun, powder supply, and recovery systems. Proper control ensures high-quality, anti-corrosion coatings.

The electrostatic generator generates a high-voltage electrostatic field, which charges the powder particles and makes them absorbent. The spray gun sprays the charged powder particles onto the surface of the workpiece, and due to the electrostatic force, the powder particles are evenly adsorbed on the surface of the workpiece.

Components

Pre-treatment equipment

including degreasing, rust removal, phosphating and other processes, the purpose is to remove oil, oxides, etc. on the surface of the workpiece and improve the adhesion of the coating.

Spraying equipment

spraying charged powder particles onto the surface of the workpiece, making them evenly distributed through electrostatic adsorption.

Leveling and curing equipment

the workpiece enters the curing furnace, and under the action of temperature and time, the powder coating gradually levels and solidifies to form a tight, uniform and smooth coating.

Post-treatment equipment

inspect the coating quality and pack and put into storage.

The electrical electrostatic powder coating line is an environmentally friendly, efficient and energy-saving coating equipment suitable for the surface treatment of various electrical products. Through reasonable process flow and strict process control, the coating quality can be ensured and the appearance and anti-corrosion performance of the product can be improved.

0102030405

How to choose When purchasing a powder coating line in the home appliance industry, here are some important considerations

Order Process

Send requirements

First, please leave your contact information and we will contact you to understand your requirements. We will have professional technicians to communicate with you.
Design plan

The design team will carefully check your requirements and provide suggestions on how to improve your concept. We will design the equipment plan for you and quote.
confirmation

After the plan and quotation are confirmed, we will design detailed drawings for you, check the details with you, and develop the final implementation plan.
Cooperation and delivery

Signing a contract ensures the quality of your cooperation project with us. All items are customized and arranged in cargo containers to ensure that they arrive safely and on time.

Customization

2020/08/05

Customization of conveying system

Lorem ipsum dolor, sit amet consectetur adipisicing elit. Nulla totam nobis recusandae magnam temporibus quam...

read more

2020/08/05

Capacity customization

Plan production lines according to customer capacity to meet customer production needs.

read more

Customization of electrostatic powder spray booths

2020/08/05

Customization of electrostatic powder spray booths

Customize spray booths that meet spraying needs according to the type of customer product color.

read more

2020/08/05

Pre-treatment cleaning system

Customize pre-treatment systems that meet workpiece cleaning according to the customer's actual production needs.

read more

2020/08/05

Customization of heating system

Customize heating systems that meet customer needs according to the customer's local heating energy options.

read more

Customization of electrostatic powder spray guns

2020/08/05

Customization of electrostatic powder spray guns

Customize powder spray guns that meet customer production needs to improve coating quality and efficiency

read more

Customer Reviews

Ryan from Canada

Foshan Nanhai District Ketu Machinery Equipment Co., Ltd.'s professional knowledge and experience in the industry are truly excellent. Their team not only demonstrated superb technical capabilities, but also showed a high sense of responsibility and professionalism in cooperation.

Alexander from America

The quality and color of the products sprayed with their equipment are very good. When our products were inspected by our customers, the superb quality of the product coating was recognized by them, which helped us remain in their minds.

Ryan from Canada

We are very satisfied with choosing Ketu as the manufacturer of our electrostatic powder coating production line. They have rich knowledge in the field of coating and can quickly understand our needs. The production line they designed performs very well in space and energy efficiency, saving a lot of space at our site. Additionally, the equipment operation is very stable.

0102

Are you ready to optimize your coating operation?

Leave Your Message

1. Why is the coating not shiny enough?

Reasons: The baking time is too long, the temperature is too high, other harmful gases are mixed in the baking, the workpiece surface is too rough, and the pre-treatment method is not selected properly. Solutions: Adjust the baking time and temperature, ensure the baking environment is clean, and select the appropriate pre-treatment method
2. Why does the coating change color?

Reasons: Repeated baking, other gases are mixed in the oven, and the baking is excessive during curing.
Solutions: Optimize baking conditions, purify the baking oven, and strengthen cleaning before construction
3. Why is the coating surface orange peel?

Reasons: The thickness of the sprayed coating is uneven, the powder atomization is not good, the spray gun has powder accumulation, the curing temperature is low, the powder is damp, the workpiece grounding is poor, the baking temperature is too high, the workpiece itself has material problems, and the pre-treatment is not handled well.
Solutions: Adjust the distance and angle of the spray gun to ensure uniform powder atomization, control the curing temperature and coating thickness, adjust the workpiece material, and adjust the pre-treatment method.
4. Concave holes appear in the coating?

Reasons: improper treatment, incomplete degreasing, contaminated source, incomplete degreasing and dewatering of compressed air, uneven surface of workpiece, contaminated by dust or other impurities.
Solution: Strengthen pre-treatment, ensure that the compressed air is clean, and clean the surface of the workpiece
5. Why do bubbles appear in the coating?

Reasons: The moisture is not completely dried after the surface treatment of the workpiece, the degreasing and rust removal is not thorough, the bottom volatiles are not removed, there are pores on the surface of the workpiece, and the powder coating is too thick.
Solution: Thoroughly dry the surface of the workpiece, ensure thorough degreasing and rust removal, and control the thickness of the powder coating.
6. Why is the coating uneven?

Reasons: Uneven powder spraying, too close distance between the spray gun and the workpiece, and unstable high-voltage output.
Solution: Adjust the distance and angle of the spray gun to stabilize the high-voltage output
7. Why is the impact strength and adhesion of the coating poor?

Reasons: The phosphate film is too thick, the curing temperature is too low, the time is too short, and the base metal is not cleaned.
‌Solution‌: Control the thickness of the phosphating film, adjust the curing temperature and time, and ensure that the base metal is cleanly processed.
8. Why does the coating produce pinholes?

‌Reason‌: Foreign matter in the air, too high spray gun voltage, too close distance between the spray gun and the workpiece, too thin coating, and insufficient curing of the coating.
‌Solution‌: Clear foreign matter in the air, adjust the spray gun voltage and distance, and ensure that the coating is fully cured.
9. Why does a small amount of sand appear on the surface of the coating?

‌Reason‌: Spray blockage or poor airflow, poor spray gun atomization, powder dripping in the powder spraying room, and other debris contaminating the workpiece surface.
‌Solution‌: Clean the spray system, purify the powder spraying room, and avoid debris contamination.
10. Why does the coating fall off?

‌Reason‌: The surface treatment of the workpiece is not good, the degreasing and rust removal is not thorough, the output voltage of the high-voltage electrostatic generator is insufficient, and the workpiece grounding is poor.
‌Solution‌: Strengthen the surface treatment of the workpiece, ensure thorough degreasing and rust removal, check the output voltage of the electrostatic generator, and ensure that the workpiece is well grounded.
11. Why is the powder supply uneven?

‌Reason: The powder supply pipe or powder spray pipe is blocked, the air pressure is insufficient or unstable, the air compressor is mixed with oil or water, and the powder feeder fluidization is unstable.
‌Solution: Clean the powder supply pipe and powder spray pipe, ensure the air pressure is stable, check the air compressor, and adjust the powder feeder fluidization.
12. Why is the powder flying and the adsorption poor?

‌Reason: The electrostatic generator has insufficient high voltage, the workpiece is poorly grounded, and the air pressure is too high.
‌Solution: Check the output voltage of the electrostatic generator, ensure that the workpiece is well grounded, and adjust the air pressure.
13. Why is the powder spraying amount small?

‌Reason: Insufficient air pressure, insufficient air volume, too high air pressure, water vapor and oil mixed in the air.
‌Solution: Adjust the air pressure, ensure sufficient air volume, and clean the water vapor and oil in the air.
14. Why is the powder spraying pipe blocked?

‌Cause‌: Problem with the material of the powder spraying tube, the powder adheres and hardens at the nozzle, and the air pressure for conveying powder is too low.
‌Solution‌: Replace the material of the powder spraying tube, clean the nozzle regularly, and increase the air pressure for conveying powder.

Contaet With Ketu Todays!

Quote Now

Improve performance and sustainability

Coating Production Lines

Home Appliance Industry

Components

Pre-treatment equipment

Spraying equipment

Leveling and curing equipment

Post-treatment equipment

How to choose When purchasing a powder coating line in the home appliance industry, here are some important considerations

Workpiece adaptability and coating quality

Pre-treatment capability

Coating efficiency

Energy and resource consumption

Environmental protection and safety

Equipment reliability and maintenance cost

Technical support and after-sales service

Brand and reputation

Budget and cost-effectiveness

Future scalability

Operation training

Technological advancement

Accessories supply and compatibility

Order Process

Customization

Customization of conveying system

Capacity customization

Customization of electrostatic powder spray booths

Pre-treatment cleaning system

Customization of heating system

Customization of electrostatic powder spray guns

Customer Reviews

Are you ready to optimize your coating operation?

Leave Your Message

1. Why is the coating not shiny enough?

2. Why does the coating change color?

3. Why is the coating surface orange peel?

4. Concave holes appear in the coating?

5. Why do bubbles appear in the coating?

6. Why is the coating uneven?

7. Why is the impact strength and adhesion of the coating poor?

8. Why does the coating produce pinholes?

9. Why does a small amount of sand appear on the surface of the coating?

10. Why does the coating fall off?

11. Why is the powder supply uneven?

12. Why is the powder flying and the adsorption poor?

13. Why is the powder spraying amount small?

14. Why is the powder spraying pipe blocked?

Contaet With Ketu Todays!

Improve performance
and sustainability