Drying equipment, anti-corrosion methods: Most of the drying equipment are welded parts, flat, the composition of the cylinder. For different purposes of the drying equipment for anti-corrosion treatment, the following describes several kinds of materials in the anti-corrosion and manufacturing methods of some experience.
Phosphating-passivation process In the manufacture of vibrating fluidized bed dryers, 70 percent of the parts are carbon steel. Process between a long turnaround time, so the surface to generate a lot of rust, paint before the need for more artificial to rust. Phosphating - passivation process, through the electrical and electrochemical reaction, through a one-time treatment, both rusty steel parts, the surface showing the original color of the metal, while the metal surface to produce dense anti-rust film The Can be placed in the wet air for ten days, it will not rust. It is simple to operate, can improve the operating environment, reduce labor intensity, save manpower and resources. The phosphating-passivation treatment solution contains emulsifiers, molybdates, soluble phosphates and various acids. The method is not only used in the above models, but also in other similar structures or racks. deal with.
Application of electrostatic powder coating in the manufacture of drying equipment The traditional paint coating is liquid, which contains a large number of organic solvents such as ester ketones and hydrocarbons, to the production, storage and transportation, construction brings a series of trouble, flammable and explosive Unsafe. Due to a certain degree of toxicity, volatile to the atmosphere, serious pollution of the environment. Therefore, domestic and foreign paint experts are committed to the development of less solution or no solution of new paint. One of the new coatings is powder coatings.
Vibrating fluidized bed drying equipment on the machine cover, mostly made of cold-rolled stainless steel plate, and thus the cost is high. Why use stainless steel instead of ordinary carbon steel, because the equipment in the working state will come into contact with a variety of corrosive materials and gases, and stainless steel corrosion resistance is very superior, and thus made of stainless steel cold rolled plate.
Ordinary carbon steel for electrostatic spraying polyester resin powder coating, its corrosion resistance is completely comparable with the stainless steel. Because of the toughness, durability and good decorative properties of the powder coating, it has excellent outdoor weatherability and heat resistance, excellent corrosion resistance and powder resistance, excellent gloss and shade properties, so static Powder coating is fully suitable for the protection of the dryer shell.