The cable tray spraying process is also known as electrostatic powder spraying. It uses an electrostatic generator to make the plastic powder charged, adsorbed on the surface of the iron plate, and then baked at 180-220 ℃ by a high-temperature fan to make the powder melt and adhere to the metal surface. Next, let's talk about the electrostatic spraying process of bridge from Jinan Bridge manufacturer.
Intention: remove the oil, dust and rust on the surface of the workpiece, and form a "phosphating layer" on the surface of the workpiece, which can not only prevent corrosion, but also increase the adhesion of the spraying layer.
Main process flow: degreasing, derusting, phosphating and passivation. The pretreated workpiece is not only free of oil, rust and dust on the surface, but also forms a layer of uniform and rough gray phosphating film that is not easy to rust on the original silver gloss surface, which can play a role in rust prevention. And a spray coating is added.
2. Electrostatic spraying
Usage: evenly spray powder coating on the surface of workpieces, especially workpieces (including positions prone to electrostatic shielding) or finish spraying with high-performance electrostatic spraying machine.
Using the principle of electrostatic adsorption, evenly spray a layer of powder coating on the surface of the workpiece; The fallen powder is recycled through the recycling system and can be reused after screening.
3. High temperature curing
Objective: to heat the powder coating on the surface of the workpiece to a certain temperature and keep it for a corresponding time to melt, level and solidify, so as to obtain the surface effect required by the workpiece.
Process flow: push the sprayed workpiece into the curing furnace, heat it to a predetermined temperature (generally 185 degrees), and keep it for a corresponding time (15 minutes); Turn on the stove, take out the cooler and get the product.
Prompt: heating and control system (including electric heating, oil, gas, coal and other heating methods) incubator = curing furnace.
4. Decoration and disposal:
Intention: make the workpiece after electrostatic spraying achieve a certain special appearance, such as various wood grains, stripes, long surfaces, etc.
The above are the anti-static measures taken on the surface of the cable tray. I hope the above introduction can help you. In addition, there is no strong or weak current in the cable tray itself, but there are certain requirements for installation. Come to our website for more details http://www.sddlqj.cn Consult and understand.