First of all, we must remind everyone that most of the mining equipment such as sand making machines, crushers, and mills are made of steel. The long-term open-air operation or water vapor is relatively sufficient, plus a period of idleness, the body is rusty.A very normal chemical reaction.There is also the rust of the internal crushing chamber of the machine. This is because the inner wall and the material (generally the rock, ore, etc. with higher hardness) are rubbed during the crushing process, and the inner wall is scratched. It is easy to rust when left for a long time.It doesn't matter if it rusts, but it should be disposed of in time to prevent it from rusting for a long time, causing damage to the machine and affecting the normal use of the sand making machine.There are four main ways to remove rust:
1. Chemical descaling method: mainly a method of removing rust by chemical reaction between acid and metal oxide to remove the rust product on the metal surface of the sand making machine, which is commonly referred to as pickling and rust removal.Can only be operated in the workshop;
2. High-pressure water abrasive rust removal: The impact of the high-pressure water jet (plus the abrasive grinding action) removes the rust and coating on the sand-making machine steel.It is characterized by no dust pollution, does not damage the steel plate, greatly improves the rust removal efficiency, and has good rust removal quality.However, the steel plate after derusting is easy to return to rust, and a special wet rust-removing paint must be applied;
3. small air or electric derusting: mainly powered by electric or compressed air, equipped with appropriate descaling device, reciprocating or rotating motion to meet the rust removal requirements of various occasions;
4. Apply anti-oxidation paint: Apply mineral oil, paint or fired enamel, spray, etc. on the surface of iron products.A layer of metal that is not easily rusted, such as zinc, tin, chromium, nickel, etc., is plated on the surface of the steel by electroplating or hot plating.These metal surfaces can form a dense oxide film to prevent iron products from rusting by contact with substances such as water and air.Chemical methods can also be used to form a dense and stable oxide film on the surface of the iron article to prevent rusting of the iron product.
Anti-rust method:
1. Electroplating heat method: a metal material that is not easily rusted on the surface plating or heat of a sand making machine, such as aluminum, zinc, etc., after plating these metal materials, a surface of the sand making machine can form a dense oxide film.Achieve that the material of the sand making machine cannot be in contact with water and air, so that it will not rust;
2. Coating method: Applying oily materials, paints, etc. to the surface of the sand making machine can isolate the iron of the sand making machine from the external water and oxygen;
3. Material method: The general sand making machine is made of iron. In order to prevent rust, we can use alloy material to produce sand making machine, which can fundamentally solve the problem of rusting of sand making machine;
4. Environmental Law: The rusting of the sand making machine is generally the oxidation reaction between iron and water. Therefore, by keeping the working environment of the sand making machine dry, it can also prevent the sand making machine from rusting.