The first thing to consider is whether the galvanized sheet is cleaned properly during the processing process, whether the cutting fluid, grinding fluid, and lubricating oil used before the anti-rust process are cleaned, and whether the chemical liquids such as the sweat of the people in contact are cleaned.
Secondly, before applying the anti-rust product, the surface of the rotating shaft is in a dry and clean state (otherwise there will be water in oil in the subsequent anti-rust oil, otherwise it will be easy to rust)
Furthermore, if you use anti-rust oil to prevent rust, whether the anti-rust oil chedi is dried before packaging (if the anti-rust oil layer is not dry, dust and other contaminants will be attached, which will cause the anti-rust oil to lose its anti-rust effect)
Is rust protection added to the packaging (in order to ensure that the shaft will not be corroded by accidental factors during storage and transportation)?
In order to protect metal parts and processing machinery, metal cleaning operations can be added between each process to remove contaminants such as oil and metal scraps generated during the processing. Of course, in order to save costs, a cleaning process that can clean various contaminants can be added separately before the anti-rust process to ensure that the surface of the product is clean and dry during the anti-rust process.
Here, I would like to introduce to you the metal cleaner (600E metal cleaner) that meets the national VOCs emission standards: if the complex drying process of the anti-rust oil is omitted, it is difficult to ensure the chedi drying of the anti-rust oil. You can choose to use water-based anti-rust agent instead of anti-rust oil (510D3 water-based anti-rust agent), oil-free anti-rust agent, and the anti-rust layer is dry and clean. In addition, the anti-rust protective layer can be formed by simply drying in the air. The anti-rust time is at least half a year. If the surface is only coated with water-based anti-rust agent, it can be used directly without cleaning.
Storage and transportation of parts require packaging. Ordinary plastic packaging bags or paper bags can only provide simple protection, protect parts from corrosion by water vapor, and reduce losses caused by collision and friction. For products that are prone to rust, in order to improve the anti-rust performance, the vapor phase anti-rust packaging will be selected as the packaging material. Such as VCI bag, VCI paper, etc.
VCI packaging is an oil-free anti-rust method, which can help alleviate the rust rate and increase the anti-rust time. It is an advantageous packaging method for parts that are prone to rust. At present, many auto parts suppliers prefer anti-rust measures.