Problems of color steel plate powder coating equipment and technology

Relative to the problems of powder coating thinness and flatness that have not been solved, color steel plate powder coating equipment also has a series of technical problems that must be solved but the industry has not been able to solve well

01 The problem of difficult powder coating in high-speed powder coating

The line speed of color steel plate coating is very fast, usually as high as 60-180 meters per minute .

02 Coating uniformity problem of powder coating

The coating thickness of the color steel plate is between 20-30 microns in accordance with the relevant industry standards, and there are a large number of products on the market with coating thicknesses far lower than the non-mandatory industry standards.

03 Fat edge problem of powder coating

Traditional powder coating relies on electrostatic adsorption of powder, and more powder will accumulate at the edges, resulting in a "fat edge" phenomenon

04 The problem of efficient recycling and fast color change

Liquid color steel plate coating production lines basically have quick color changing devices

05 The need for one-time baking and double-sided coating in different colors

Liquid color steel plate coating can usually be coated with primer and topcoat, two coating and two baking, and it can also be coated with different coatings on the front and back into the same oven and baked together

06 Safety issues of electrostatic powder coating

Traditional powder coating uses high-voltage static electricity to charge and adsorb the dust
.
It is difficult to avoid dust explosion due to fire in high-voltage static electricity
.
The traditional powder coating has done enough work on the safety of the spray gun, and has also done sufficient explosion-proof measures in the exhaust and ventilation of the spray room.
Even so, the actual powder spraying process continues to appear explosive.
Situation
.
The amount of powder used in the coating of color steel plates is very large, and the relatively small area is relatively small.
Once it burns and explodes, it will be very serious
.
Therefore, the safety problem under high-voltage static electricity has become a very important technical problem that must be solved thoroughly
.

07 Reconstruction and utilization of existing color steel plate liquid line

There are already about 800 liquid coating lines for color steel plates in China
.
The investment of each line is tens of millions or even hundreds of millions.
How to make full use of the existing liquid coating line for powder coating, make full use of the existing looper and other transmission devices, pretreatment, consideration and other equipment of the liquid coating line, not only It can save huge capital investment, and can greatly accelerate the speed of promotion, which is a very meaningful work
.