The hardness of hard chrome plating layer can reach HV750~1200, which significantly enhances the scratch and wear resistance of hydraulic shaft surface, especially suitable for high-pressure, high-friction working conditions. Enhancement of corrosion resistance
Author: Anna
I. Core functions
Enhance the surface hardness and wear resistance
The hardness of hard chrome plating layer can reach HV750~1200, which significantly enhances the scratch and wear resistance of hydraulic shaft surface, especially suitable for high-pressure, high-friction working conditions. Enhancement of corrosion resistance
Enhanced corrosion resistance
The surface of the chromium layer is easily passivated to form a dense oxidized film, which effectively isolates the hydraulic shaft from moisture, oxygen and chemical media, and prolongs the service life of the hydraulic shaft in wet or corrosive environments.
Improved surface finish and sealing
The surface of the coating is smooth and even (greenish appearance), which reduces the friction resistance between the hydraulic shaft and the seals and improves the sealing performance of the hydraulic system.
Repair and dimensional compensation
The hard chrome plating (thicknesses of 50-800 µm) repairs dimensional tolerances on worn hydraulic shafts, restores geometrical accuracy and reduces replacement costs.
II. Advantages of the process
High bonding strength and uniformity: High bonding strength between the plating layer and the substrate, and excellent dispersion ability of the plating solution to ensure uniform thickness of the plating layer, avoiding localized weak points.
Low coefficient of friction: The coefficient of friction is only 50% of that of steel/cast iron, which reduces the energy loss between moving parts.
High-temperature stability: maintains excellent abrasion resistance in high-temperature scenarios such as engines, suitable for high-temperature working conditions in hydraulic systems.
III. Application effects
Improved sealing of hydraulic devices: For example, after hard chrome plating of the plunger, the sealing and abrasion resistance are enhanced, reducing the risk of hydraulic oil leakage.
Extended maintenance cycles: the life of hydraulic shafts is increased after surface treatment, reducing the frequency of downtime for maintenance.
Suitable for high-precision scenarios: hard chrome plating can meet the reliability requirements of ultra-high vacuum equipment, precision machinery and other scenarios with stringent requirements on surface performance.
Hard chrome plating on hydraulic shafts improves mechanical properties and durability through high hardness, corrosion resistance, low friction, etc., and is a key process to ensure the efficient and stable operation of hydraulic systems.