It can be seen from the test that the longer the interval between rustproof treatments, the more likely the spring is to rust, and the rust-proof water is generally required within 4 hours, especially during the yellow plum season. The effect of immersion time in anti-rust water on anti-rust performance is 30 pieces of spring made of 65Mn material, divided into 3 groups, 10 pieces in each group. After being sprayed, it is completely immersed in 4% concentration of BG-1011. In the rust water, soak for 5s, 150s and 300s respectively, remove and drain, and store. Observe the appearance of the spring every day, and record if there is a change. See the test results. Effect of length of soaking in anti-rust water on anti-rust performance Spring soaking time Water-soluble anti-rust agent mostly uses oxidation-reduction reaction to form a thin and invisible film layer on the metal surface to achieve anti-rust purpose. The length of time the spring is soaked in the anti-rust water is directly related to whether the generated anti-rust film layer is complete, and finally determines the anti-rust effect. Atmospheric corrosion of metals begins with condensation on their surface. From the test results, the spring with the same anti-rust treatment process has a much faster corrosion rate than the normal season in the yellow plum season. The main reason is that the external environment of the storage spring is wet, and it is easy to form condensation, which causes the spring to rust. Therefore, the spring is immersed in the rust preventive water, and the time should be controlled above 2 min. Conclusion In order to prevent spring corrosion between processes, the following anti-rust process and operation specifications are proposed: the spring is completely immersed in the anti-rust water, and it must be removed and dried after at least 2 minutes, and then stored in a dry environment. After the spring is finished, the spring should be rust-proofed in time, within 4 hours. The concentration of rust preventive water is controlled between 3% and 5%. In the yellow plum season, the corrosion inhibitor content should be increased at a concentration of 8% and 10%. Before use, the rust preventive water concentration should be checked before use to increase the etch inhibitor or water. If the processing medium, dust or processing debris remains on the surface of the spring, it should be cleaned first and then rust-proofed. Avoid bare hands touching the final machined surface of the spring to prevent hand sweating. When the spring is stacked, it should be at a certain distance from the ground to prevent the action of moisture and cause the spring to rust.
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