How to prevent iron parts from rusting

The varieties of antirust oil are complicated, and there are three selection principles:?

① According to the metal variety, different antirust oils have different antirust effects on different metal materials, some have better antirust effects on ferrous metals, but the effect on copper is average. These are often explained in the product description materials of antirust oil, so pay attention to it when choosing.

(2) According to the structure and size of metal products, solvent dilution type or grease type can be selected for simple structure and large surface area, and oil type with complex structure and holes or cavities is better, because the removability of antirust film should be considered when unsealing.

(3) According to the environment and use of metal products, it is distinguished whether it is short-term process rust prevention or short-term lubrication long-term rust prevention, whether it is for long-term storage in humid environment, or whether it may be stored in coastal warehouses or even transported at sea for a certain period of time, so it has good salt spray resistance. The selection should be targeted in this respect. Of course, first of all, we should choose reliable antirust oil. At present, the consumption of antirust oil in China is not large, and many antirust oils are produced by local small factories or even made by users. At present, the quality of some major domestic antirust additives is not stable enough or their oil solubility is not good, so they are visually inspected before use, and compared with previous batches in terms of appearance, color, layering or unevenness. If several batches have visual differences in appearance, we should doubt their quality. For users with a large amount of antirust oil, wet box test equipment should be equipped to verify the antirust effect of antirust oil. Antirust oil coating method