Rust removal on the surface of the hottest steel b
2022-10-16- Detail
Derusting of steel barrel surface
the steel barrel surface is most likely to be oxidized and corroded before painting. The oxide skin and rust on its surface are mainly ferrous oxide, ferric oxide, hydrous ferric oxide and ferric oxide. Before the steel barrel is painted, if the oxide skin and rust on its surface are not removed and the funds are invested by the state, the adhesion, decoration and service life of the paint film on the steel barrel surface will be affected. Because the rust structure is loose, it is not firmly attached to the surface of the steel barrel and is easy to fall off with the coating. Under the action of water and Fen, the oxide skin will produce trioxide, and the price trend will gradually slow down. The increase in volume will cause the paint film to blister, crack and fall off. The corrosion battery composed of oxide under the paint film and metal iron of the steel barrel is the cathode, which promotes the metal on the surface of the steel barrel to continue to corrode, so that the coating is quickly destroyed
the rust removal methods on the surface of steel barrels are divided into chemical methods and mechanical methods
chemical derusting is to use chemical melon or electrochemical melon to dissolve general rust, oxide scale and various corrosion products from the surface of the steel barrel without affecting the base metal of the steel barrel. The most commonly used chemical derusting method is acid pickling, which uses organic or inorganic acids to break the oxide and yellow rust on the surface of the steel barrel from the surface of the steel barrel
The hydraulic jaw of Jinan gold testing machine usesmechanical rust removal, which uses mechanical forces such as friction, hammering, scouring, etc. to make the abrasive particles remove rust, high-temperature oxide skin and other dirt on the surface of the steel barrel. The most commonly used mechanical derusting method in steel barrel enterprises is manual grinding before mechanical grinding. Manual derusting uses simple tools and manpower to remove rust. Its method is simple and easy, but it has high labor intensity, low production efficiency and poor derusting quality. Generally, it can only remove loose or light rust. Treatment and recycling of waste plastics in recent years
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