Why will the machine rust with anti-rust oil?

2024-05-10

Why will the machine rust with Anti-rust Oil?

In order to prevent the loss of rust, many factories will use anti-rust oil for machines and parts, but even so, there is still a question: "Why is the anti-rust oil used, the parts are still rusty?" So what's the problem?

Today, I will take you to understand some practical knowledge of anti-rust oil, and how to do a good job of anti-rust measures.

01 Anti-rust oil is how to prevent rust?

As we all know, metal rust is generally caused by the reaction of metal materials with the rust factor of the surrounding environment. The anti-rust oil is to use the anti-rust agent to form a dense "hydrophobic adsorption film" on the metal surface, isolating the metal from water, oxygen, salt and other substances in the air to prevent metal rust.

So why use anti-rust oil, the machine is still rusty? There are two possible reasons, one is some operational errors, one is the quality of anti-rust oil problems.

02 Some precautions for anti-rust oil

When using anti-rust oil, if you do not pay attention to the following steps, rust is likely to occur.

① Cleaning

Before using anti-rust oil, metal products should choose the appropriate method for cleaning. If there is no cleaning or cleaning is not thorough, there are hand sweat, dust and other residues on the metal surface, there is a hidden danger of inducing rust, or the product has been rusted, and then how much anti-rust oil is futile.

Commonly used cleaning methods are solvent cleaning, chemical treatment cleaning, mechanical scrubbing cleaning method, it is recommended to choose the right one according to the nature of the product surface and the conditions at the time. Be sure to remove the rust factor residue from the parts thoroughly.

② Dry

If the metal surface is not dried after cleaning, rust may also occur. The simplest operation is to dry with clean gauze, or dry with filtered dry compressed air, or dry with a dryer at 120-170 ° C.

③ Heating

For some of the more viscous anti-rust oil, if it cannot be dipped or brushed at room temperature, it can be heated and used. However, if the anti-rust oil is operated at high temperatures for a long time or is not heated according to regulations, some of the additives may decompose and make the anti-rust oil deteriorate. Therefore, the heating must be carried out according to the specified temperature, and the heating should be stopped when not in use to avoid the failure of the anti-rust oil.

Therefore, it should be noted that it is not the use of anti-rust oil, the metal parts will not rust. The anti-rust effect of anti-rust oil is closely related to the entire production process, cleaning and packaging, and the temperature, humidity, and air pollution of the environment.

Only on the basis of strengthening the anti-rust management of all aspects of the production process, with other materials, such as reasonable selection of cleaners and drying methods, anti-rust oil can play a real role, otherwise, even if it is the best anti-rust oil, it can not achieve the desired effect.

03 Selection of anti-rust oil is very important

In addition to the above operational matters, the quality of anti-rust oil is also very important. The components of anti-rust oil include Base Oil, anti-rust agent, film forming agent, antioxidant and so on.

According to normal standards, the base oil makes the anti-rust agent evenly dispersed in the oil to ensure that it does not accumulate in use, and the polar part of the anti-rust oil forms a directional adsorption on the metal surface to form a chemisorbed film, thus playing a rust-proof role. The film forming agent can enhance the strength and thickness of the anti-rust oil film and prevent the destruction of the anti-rust agent after film formation.

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