Hard chrome plating is engineered for extreme wear resistance, low friction, and dimensional restoration. Unlike decorative chrome, hard chrome deposits are thick, dense, and highly durable. Leimeng Plating provides hard chrome coatings for hydraulic rods, pistons, cylinders, molds, machine ways, and heavy machinery components operating in abrasive environments.
The hard chrome process deposits chromium from a chromic acid bath at elevated current densities and temperatures. Typical thickness ranges from 5 to 100 micrometers, depending on the application and required service life. For severely worn parts, chrome plating can restore diameter and return components to specification.
Surface preparation is especially important. Parts must be ground, polished, and thoroughly cleaned to avoid defects such as pitting, nodules, and poor adhesion. Leimeng controls bath chemistry, current distribution, and anode placement to achieve uniform thickness even on long cylindrical parts.
Key advantages include hardness values exceeding 800 HV, excellent adhesion to steel substrates, and resistance to corrosion and galling. Post-plating grinding or honing is often performed to achieve tight dimensional tolerances and the required surface finish.
Quality assurance includes thickness measurement, hardness testing, adhesion testing, and visual inspection. With decades of experience in hard chrome plating, Leimeng supports industries such as construction, mining, oil and gas, and precision manufacturing with coatings that extend equipment life and reduce downtime.