Die steel is a commonly used industrial material, and rust may appear on the surface of die steel due to long-term use or improper storage conditions. Rust not only affects the appearance of the mold steel, but also reduces its service life and performance. Therefore, it is very important to remove the rust on the die steel in time. Here are a few commonly used methods for removing rust.
Mechanical rust removal method.
Mechanical derusting is one of the most common methods of derusting. Rust removal can be done using tools such as wire brushes, sandpaper, grinding wheels, etc. First, wipe off the rust layer on the rust surface with a wire brush or sandpaper, and then sand it with a grinding wheel until the rust is completely removed. This method is suitable for shallow rust, but care needs to be taken not to over-sand, so as not to damage the surface of the mold steel.
2.Chemical rust removal.
Chemical derusting is the use of chemicals to react with rust to dissolve or convert it into a washable substance. Commonly used chemical derusting agents are acidic derusting agents and alkaline derusting agents. Acidic rust removers such as dilute hydrochloric acid, dilute sulfuric acid, etc., can dissolve rust;Alkaline rust removers, such as sodium hydroxide, potassium hydroxide, etc., can convert rust into a washable substance. When using chemical rust removers, you need to pay attention to safe operation, wear protective gloves and glasses to avoid chemical damage to ** and eyes.
3.Electrochemical rust removal.
The electrochemical derusting method uses electrochemical principles to remove rust from the surface of the mold steel. This method requires the use of an electrolytic cell and a power supply, with the mold steel as the anode to dissolve the rust. The electrochemical derusting method has the advantages of fast derusting speed and good effect, but it requires professional equipment and operation technology, and is not suitable for personal use.
4.Heat treatment and rust removal method.
The heat treatment derusting method is to heat the mold steel to a certain temperature to make the rust undergo a redox reaction, so as to remove the rust. Commonly used heat treatment methods include flame heating, resistance heating, etc. This method is suitable for situations where the rust is deep or difficult to remove, but care needs to be taken to control the heating temperature and time to avoid adverse effects on the die steel.
5.Anti-rust measures.
In addition to removing the rust on the die steel in time, some anti-rust measures can also be taken to prolong the service life of the die steel. For example, a layer of anti-rust oil or anti-rust paint can be applied to the surface of the mold steel to form a protective film to prevent air and moisture from coming into contact with the surface of the mold steelThe die steel can also be cleaned and maintained regularly to avoid the accumulation of dust and moisture.
In short, the rust on the die steel can be removed by mechanical derusting, chemical derusting, electrochemical derusting, heat treatment derusting, etc. In the process of derusting, it is necessary to pay attention to safe operation, choose the appropriate derusting method, and take anti-rust measures to prolong the service life of the die steel.