Precision piston rod is a connecting component that is widely used in most mechanical products. However, due to the harsh environment of some mechanical applications, there are also relatively high requirements for product surface properties.
Methods to enhance the corrosion resistance of product surfaces:
1. Rolling processing
Through roll forming, a cold work hardening layer is formed on the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, and can delay the generation or expansion of fatigue cracks, thereby enhancing the surface corrosion resistance.
2. Chrome plating
Precision piston rods are chromed for a hard, smooth, corrosion-resistant surface. After chrome plating, the coating hardness of the product can reach HV1100, and the coating is smooth, uniform in thickness and strong in dispersion.
3. Conditioning
After quenching and tempering treatment, the working strength of the material can be enhanced, which is helpful for the closure of tiny cracks on the surface, hindering the expansion of erosion, thereby enhancing the surface corrosion resistance. However, not all of them need to be tempered, so the treatment of tempering should be judged according to the actual situation and materials.
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