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What is anti-rust oil? RoHS Approved Manufacturer of custom made plastic parts
Rust often refers to the corrosion of ferrous metals in the air due to the electrochemical action caused by the participation of water and oxygen. The anti-rust oil mainly uses the anti-rust agent to form a protective film on the metal surface to isolate water and oxygen so as to prevent rust.
Classification of common antirust oils for mechanical parts processing
- Thin layer anti-rust oil
Thin oil film, less dosage, forms a thin anti-rust film on the surface of the workpiece, does not affect the appearance of the product, easy to clean, and has good anti-rust performance. It is suitable for anti-rust and sealing anti-rust between parts and components in the automobile, hardware and electronic industries.
- Replacement anti-rust oil
With dehydration performance, it is suitable for products that have not been completely dried after the workpiece is cleaned. It can replace the water, and the subsequent cleaning is easy. It is often used for rust prevention between processes and storage.
- Hard film anti-rust oil
It has excellent antirust performance in humid and salt spray environments, and is generally suitable for working conditions that require high antirust performance in harsh environments such as marine transportation, hulls, steam chassis and equipment. RoHS Approved Manufacturer of custom made plastic parts
- Water-based antirust agent
Mixed with water, low cost, widely used for anti-rust between ferrous metal, alloy steel and non-ferrous metal products, and the anti-rust period is short.
About the choice of anti-rust oil
- Choose according to the product material
Different metal materials have different requirements for anti-rust oil, such as cast iron and copper, which have different requirements for anti-rust properties.
- Choose according to the anti-rust cycle
For short-term anti-rust, you can use an anti-rust oil with a lower viscosity and a thinner oil film. For anti-rust with a longer cycle, you need an anti-rust oil with a higher viscosity and a thicker oil film.
- Choose according to product structure and usage
For example, smaller products can be anti-rust by immersion, and larger products with more complex structures can be anti-rust by spraying or brushing. No matter which method is used, it should be ensured that each part has formed an effective Anti-rust film to avoid partial corrosion (in addition, it should be noted that the hands of the operator should avoid direct contact with the metal surface. Human sweat contains rust-causing substances such as chloride ions and lactic acid, which are easy to form fingerprint-like corrosion on the surface of the workpiece). RoHS Approved Manufacturer of custom made plastic parts
- Choose according to the subsequent processing technology and assembly requirements
Such as the post-processing technology, storage environment, packaging conditions, and whether cleaning is required before assembly.
How to use anti-rust oil and precautions
- Soaking method: the advantage is that a uniform anti-rust film can be formed on the surface to ensure complete coverage of the product, and the cost is low. The disadvantage is that it is only suitable for small-scale products, using low-viscosity anti-rust oil, and the immersion tank must have good drainage system.
- Spraying method: It is suitable for large-scale and complex-structured products. A high-efficiency sprayer must be used. It is easy to cause the product to fail to completely form an anti-rust film. The working environment requires good ventilation performance during use.
- Brushing method: This method is simple to use, but it must be ensured that every position of the workpiece is brushed, and the brush must be kept clean before use.
- Flushing method: high efficiency, recycling, and cost saving, but it is necessary to drain and replace the products in the tank regularly to avoid excessive moisture and other substances affecting the antirust effect. RoHS Approved Manufacturer of custom made plastic parts
The above points are some basic knowledge about the selection and use of anti-rust oil. In the production process, it is still easy to use anti-rust oil and rust. The common reasons are: too much moisture on the surface of the workpiece, and the workpiece is not completely The anti-rust film is formed, the anti-rust oil has been used for a long time without replacement, a large amount of water and dust remain in the oil, and the anti-rust film on the surface of the workpiece is not completely formed before packaging, the water vapor condensation caused by the temperature difference in the package, rust More serious, the packaging material or quality does not meet the process requirements, etc. RoHS Approved Manufacturer of custom made plastic parts