However, the crusher are basically steel production as a material, because of its poor working conditions, the open-air work for a long time, will cause the machine to rust problems arise. Corrosion of the European version of the counter-attack is not only unsightly, but also affects work efficiency and shortens the life of the crusher. Therefore, it is necessary to find a solution to solve the PFW European version of the counter-attack rust.
Chemical rust removal:
1. Principle: Chemical derusting is the use of certain chemical products for the derusting of the crusher, that is, the chemical reaction between the acid and the metal oxide is used to remove the rust products on the metal surface of the crusher, which is commonly referred to as pickling. Rust, changing its rust composition to ferric chloride or ferric sulfate.
2, commonly used materials: commonly used inorganic acids and organic acids as descaling materials, such as sulfuric acid, hydrochloric acid, nitric acid, citric acid, oxalic acid, amino acids and so on.
3, the advantage of derusting: simple and easy to operate, high efficiency of derusting.
4. Note: When using this method to remove rust, it is best to strictly supervise the rust removal step, because excessive use of chemicals can easily cause the equipment itself to react with chemicals, causing safety accidents such as burns. This method is only suitable. Operate in the workshop.
High pressure water and its abrasive jet rust removal:
1. Principle: It mainly uses the impact force of high-pressure water (plus the grinding effect of abrasive) and the action of water raft to destroy the corrosion and the adhesion of the coating to the steel plate to achieve the purpose of rust removal.
2, commonly used materials: pure high pressure water (when the outlet pressure of high pressure water reaches 10-20Mpa, it can remove all kinds of loose surface dirt; when it reaches 20-35Mpa, it can remove loose rust and invalid old patent leather; to achieve the purpose of rust removal , required to reach 70Mpa or more, usually 70-250Mpa, often used 140Mpa) and abrasive jets (when high-pressure water is added to the abrasive, the rust removal capacity can be increased by about 10 times, so only 10~35 Mpa can be reached Descaling purpose).
3, rust removal advantages: good environmental performance, completely changed the dust pollution problem of dry blasting, rust removal efficiency increased by 3 to 4 times.
4, Note: Because high pressure can cause great harm to the human body, it can not be directly shot on the person, to prevent the high pressure tube from rupturing; usually, sea water is not allowed, but many coastal areas in China lack fresh water, so you can choose sea water. Rust removal.
Electric or pneumatic rust removal:
1. Definition: With electric or compressed air as the power, assemble appropriate descaling devices such as wire brushes to perform reciprocating or rotating motion to meet the rust removal requirements of the crusher.
2, commonly used materials: angle grinder, wire brush, pneumatic needle rust remover, pneumatic rust hammer, tooth type rotary rust remover.
3, the advantage of derusting: the tool is light, flexible, and can completely remove rust.
4. Note: Since the scale can not be removed, the surface roughness is small, the quality of the surface treatment cannot be achieved, and the work efficiency is lower than that of the spray treatment, so it is necessary to carry out derusting in combination with other methods.
The engineer of Shanghai Shibang Machinery Co., Ltd. introduced that mastering the PFW Euro version of the counter-destroyed rust removal is a key step in the maintenance of the machine. In addition to the above rust removal measures, in order to control the rust, it is necessary to do the equipment every year. Wash and apply anti-rust paint. It is also possible to build a closed production workshop and put the equipment inside, so that it can be protected from rain at any time to reduce the occurrence of rust.
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