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Processes

Chromium

CHROMIUM TO DEFENCE STANDARD 03-27/2 BS 3382 PT. 3&4 AND BS EN 12540

Trivalent chromium for bright and dull decorative purposes, mostly over nickel deposits.

RESTORATION OF CHROMIUM PLATE

We have been restoring Chrome plated items since our incorporation back in 1946.

Items that have been plated are stripped sympathetically in either a chemical solution or by reverse electrolysis.

To end up with a perfect lustrous chrome finish the base metal has to be polished to a high degree so that it is highly reflective. This polishing process is highly skilled and consequently relatively expensive. Once a high finish has been achieved, the item is ready for processing.

Usually items are degreased in an aqueous cleaner to remove the polishing media. From this process they are rinsed and inspected for water-breaks (a clear sign more cleaning is required) if found to be perfectly degreased the item goes for chemical/electrolytic cleaning to activate the base metal for initially copper plating then nickel and finally chrome.

The level of thickness of copper and nickel give the item its’ corrosion protection.

We are unable to process Zinc-based Die-castings but we are able to plate most other metals including aluminium, brass and steel.

We are restricted in the size of item we can process in chromium and cannot for example undertake full-size car bumpers.

The cost of replating is mostly dependant on how long it takes to polish the item. This can vary from item to item depending on it’s initial condition.