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Chrome Plating Services
Chrome plating is commonly used on zinc-plated parts to protect the zinc from white corrosion, which is primarily a cosmetic issue. Chrome plating services provide the additional value of acting as a primer for subsequent organic coatings. Parts that have undergone chrome plating retain their electrical conductivity to varying degrees, depending on coating thickness. Chrome plating services may be used to add color for decorative or identification purposes.
Chrome Plating Services: Trivalent Chromate and Clear Chromate
Chrome Plating / Chromate conversion coating is applied to passivate zinc (either plated zinc or zinc diecastings) to slow corrosion. To be in compliance with RoHS and ELV legislation, Eastern Plating's chrome plating services use Trivalent Chromates exclusively. This chrome plating method is less toxic to the environment than the hexavalent chromates used in the past.
Chrome plating coatings are soft and gelatinous when first applied but harden and become hydrophobic as they age. Curing can be accelerated by heating up to 70C, but higher temperatures will gradually damage the coating over time.
Chrome Plating Capacities (per finish type)
Barrel Chrome Plating :Up to 52,000 pounds per day.
Rack Chrome Plating : Up to 13,000 square feet per day.
Common Applications & Specifications of Chrome Plating
Chromate plating conversion coatings are common on items such as zinc diecast, automotive parts, hardware and tools. Steel parts must be plated with zinc chromating.
Atomic Number................................................................ 24
Atomic Weight...................................................................51.996
Crystal Structure...............................................................Cubic Body Centered
Color..................................................................................Silvery Metallic
Density................................................................................7190 kg/m3
Melting Point......................................................................1907°C
Boiling Point........................................................................2671°C
Specific Heat Capacity........................................................93.9 W/m°K
Specific Electrical Resistance.............................................125 nΩmm
Young's Modulus of Elasticity..............................................279 GPa
Hardness.............................................................................1060 MPa
Coefficient of Friction (on Fe in air)......................................0.19