Under the action of the high-speed stirring blade of the flash dryer, the material will be impacted and sheared, and the lumps will be quickly crushed, fully contacted with hot air, heated and then processed. The treated dry matter will rise with the hot air flow. During this process, the flash dryer will suffer a lot of corrosion, so it is necessary to do some work to prevent corrosion.
1. Use ordinary carbon steel for electrostatic spraying polyester resin powder coating
Its corrosion resistance is completely comparable to stainless steel. Because this kind of powder coating has the characteristics of toughness, durability, good decoration, and excellent outdoor weather resistance and heat resistance, and the mechanical processing manufacturer has excellent corrosion resistance and chalking resistance, excellent gloss and color light performance, Therefore, electrostatic powder spraying is completely suitable for the anti-corrosion of the dryer shell.
2. Use stainless steel cold rolled plate
Anti-corrosion technology of flash dryer: The upper cover plate is mostly made of cold-rolled stainless steel plate, so the cost is very high. Why use stainless steel instead of ordinary carbon steel, because the dryer will be exposed to various corrosive materials and gases in the working state, and the corrosion resistance of stainless steel is very superior, so it is made of cold rolled stainless steel.
3. Passivation process
In the manufacture of dryers, 70% of the parts are carbon steel structures. The turnaround time between processes is long, so a large amount of rust is generated on the surface, and more manual rust removal is required before painting. This process is through electrical and electrochemical reactions, through a one-time treatment, not only can the surface of the rust-grown steel work piece show the original color of the metal, but also generate a dense anti-rust film on the metal surface.
The above is an introduction to the anti-corrosion process of the flash dryer, if you want to know more, please contact us online or leave a message.
