Process for cleaning surface of piston rod

Abstract

The invention discloses a process for cleaning the surface of a piston rod. The process comprises the following steps: 1. racking, 2. degreasing, 3. neutralization, 4. washing, 5. water-based anti-rust treatment, 6. drying, 7. surface conditioning, 8. phosphorization, 9. washing, 10. water-based anti-rust treatment, and 11. room-temperature draining. The process has the following advantages: in the degreasing procedure, the overall rust of the rod is cleaned, and an ultrasonic device is arranged around a groove body, for accelerating rust cleaning; in the neutralization procedure, the overall particle impurities of the rod are cleaned, and the residual solution in the previous procedure is subjected to neutralization treatment; in the washing procedure, the residual solution in the previous procedure is cleaned, and prevented from being brought in the next procedure; in the anti-rust treatment procedure, a layer of anti-rust film on the surface in an activated state, of the rod, is ensured; in the phosphorization procedure, the end surface of a piston is phosphorized, then medicine residues on the surface are cleaned through washing, then the anti-rust treatment is carried out, and the whole cleaning process is completed.

Description

technical field [0001] The invention relates to cleaning of mechanical parts, in particular to a process suitable for cleaning the surface and interior of a piston rod of an automobile shock absorber, and the cleanliness standard meets the requirements of WNB881-E for cleaning the surface of the piston rod. technical background [0002] The piston rod cleaning machines currently on the market use spraying, compressed air and other methods. The above two types of cleaning equipment are not suitable for cleaning the surface and interior of hollow rods. The principle and cleaning process of the existing cleaning equipment are as follows: [0003] 1. Process flow: [0004] Manual loading → automatic feeding → high-pressure rotary spray cleaning (clean water + cleaning agent + corrosion inhibitor) → wind shear dehydration → manual supplementary blowing (operator can choose to use according to needs) → manual unloading. [0005] 2. The whole cleaning and wind cutting process is...

AI Technical Summary

Problems solved by technology

[0017] b. Low production efficiency, not suitable for mass production;

[0018] c. The steel brush is not used to clean thoroughly, and the residual impurities seriously affect the subsequent phosphating process;

[0019] d. The overall impurity quality of the product cannot pass the cleanliness requirements;

[0020] e. During the cleaning process, the surface of the non-chrome-plated area of ​​individual products appears to rust

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