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  CHROME PLATING – GALVANIZATION – CATAPHORESIS

Protect effectively your car steel from rust, garanteeing aestheticism of your vehicle and prevent harmful consequences on the rest of the equipement

Since the middle age, man worked the steel, and tried to protect it against corrosion. In the XIV century, a forgemaster recovered iron’s metal sheets with a thin layer of tin to prevent rust (which will be later called tinning)

Due to its mecanical and economical features, and thanks to its life expectancy, steel is a common material in industry. But without an effective against corrosion, it will rust. It is therefore mandatory to protect it effectively.

There are various technical processes, depending on the protection and aesthetics required.

Specialist in the treatment and protection of metals, gOld Time Repair offers you its services for the restoration of old vehicle parts and vintage metal items.

Our professionals operate the surface treatments before painting, in the pure tradition and respect of old techniques of polishing, zinc plating, copper plating, nickel plating, chrome plating, and other old patinas with a high level of finish.

Old-fashioned chrome plating

So that your vehicle regains all its brilliance and shine, we offer you a quality old-fashioned chrome plating, at a very accessible price, and in a very short time.

Chromium plating is an electrolytic coating process that deposits metallic chromium on the surfaces to be treated in order to transmit its properties.

This treatment is carried out for two important applications: decorative chrome plating and hard chrome plating. The layer deposited varies in thickness.

Decorative chromium plating is carried out on surfaces that are usually precoated with a layer of nickel (or possibly copper and nickel layers – Antique Chrome Plating) and its main purpose is to provide coating with brilliance of chromium. The resistance to tarnishing of this metal, combined with its hardness, makes this thin decorative layer look shiny and durable for many years. This is illustrated by the shiny chrome of old-fashioned cars (still visible today) and contemporary motorcycles.

gOld Time Repair offers you old-fashioned chrome plating, shiny, satin or velvet on :

  • Steel
  • Zamak
  • Copper alloys
  • Plastics
  • Also available: Black, glossy or matt chrome plating.

For some materials that cannot be chrome plated, there are epoxy based paints, which are 90% equivalent to chrome. They are mainly used on aluminium alloys, especially for car rims.

Phosphatation

Zinc phosphating acts as an undercoat with exceptional adhesion, while adding an effective corrosion barrier.

The pickling of a steel surface by phosphating causes the formation of iron phosphate, a film that provides a passivation that improves corrosion resistance.

Cataphoresis

Undoubtedly one of the best corrosion protection.

This technique is widely used as an undercoat in the automobile industry.

Cataphoresis is a painting technique that involves immersing the part in a bath of water-soluble paint, placing the part on a cathode, and migrating the paint particles suspended in the bath, by application of electric current, from the anode to the cathode.

These paint particles will then be evenly applied to the entire surface of the immersed workpiece, which will then be baked in the oven.

 

Les Advantages:

  • The entire surface of the part is covered
  • The layer is thin and regular, about twenty micrometers.
  • Homogeneity of the layer provides excellent corrosion resistance and a good adhesion layer for a primer.
  • The surface is smooth and can be directly coated with finishing paint or powder.

Zinc plating

 

Zinc plating is a general term for any surface treatment that results in the formation of a metallic zinc coating.

Zinc deposits are mainly made on ferrous metals, in order to prevent their degradation by corrosion. Zinc is a highly reducing metal, so it is oxidized instead of the metal that it protects.

The properties of these deposits are improved by a variety of chrome finishes with various colours and corrosion resistance :

  • White – blue: corrosion starts by attacking the chrome finish until it reaches the zinc. White zinc oxide then develops: this is called zinc oxidation and white corrosion.
  • Yellow: corrosion continues until the thickness of zinc layer has been consumed and reached ferrous layer. Red-brown iron oxide develops: this is red corrosion (rust).
  • Black: this zinc-iron alloyed process is obtained in an alkaline electrolytic environment. It meets the strictest requirements in terms of corrosion resistance and appearance.
We perform all treatments only at the attachment.

Copper deposit

Copper plating is an operation of coating the surface of the part with copper. The deposited copper layer has several uses depending on the needs, the material and the electrochemical conditions.

  • Part restoration :
    During the restoration of old vehicles, the thickness of the parts is often insufficient to guarantee a long service life, or successive repairs have significantly altered their surface. Even with careful polishing, defects are visible. These problems can be rectified by refilling with copper plating. The workpiece is deposited in a copper bath. It is then polished to balance the surfaces, and will be immersed in the copper bath again if necessary. After this refill treatment, the workpiece can resume its restoration process.
  •  Protection against oxidation : 
    This treatment applies to metal parts subject to oxidation in the ambient air. This is the case of thin sheet metal elements which must be covered by immersion with a layer of copper which, in contact with the air, will oxidise and thus be self-protected.
  •  Surface preparation before other treatments :
    We work in “old fashioned” chromium plating. Copper plating is an integral part of the surface preparation process before nickel and chrome plating..
  • Aesthetic covering :
    We work in “Old Fashioned” chromium plating. Copper plating is an integral part of the surface preparation process before nickel and chrome plating. Copper plating is used to give back lustre to a piece of copper that has been too much altered (restoration of art objects), or to give any piece the appearance of copper.

 

Nickel plating

Electrolytic nickel plating is one of the applications in electroplating. It involves the electrolytic deposition of aqueous solutions containing different salts on the surface of a material to improve its mechanical properties, protect it from corrosion and make it more attractive.

Nickel has the particularity of being relatively air rustproof and gives a shiny, high quality appearance. It is used to protect against corrosion or to improve the appearance of iron, copper or brass parts.

It is one of the treatments used in the ” Old fashioned chromium plating “. Its shiny appearance does not require polishing operations, so it can be applied as a chromium undercoat.

Black Nickel plating

This black coating is used for decoration on all surfaces. It allows to darken parts and to obtain anti-reflection matt finishes, with very low thickness (from 0.5 to 1 micron).

 

 

Aluminium anodising

In restoration processes, it is often necessary to polish the aluminiums. To do this, we remove the external protection and thus the material comes into contact with the open air.

Chromium plating is an electrolytic coating process that deposits metallic chromium on the surfaces to be treated in order to transmit its properties.

This treatment is carried out for two important applications: decorative chrome plating and hard chrome plating. The layer deposited varies in thickness.

The aluminium then slowly oxidises, covering itself with a thin layer of alumina (aluminium oxide) which becomes embedded at the surface. As this layer is impermeable to air, the metal is completely self-protected.

However, if contact is made with aggressive substances (e.g. acid rain), the alumina film is attacked and the metal is eaten away by the air again. The process is then repeated.

To avoid this, it is recommended to protect the surface.

Anodising is a surface treatment used to protect or decorate an aluminium (or alloy) part by anodic oxidation.

It gives materials better resistance to wear, corrosion and heat. The thickness varies according to the destination of the final product.

Anodising also improves the aesthetic appearance.

 

Oven varnish

 

gOld Time Repair also offers the possibility to apply a finishing varnish on raw or painted surfaces. It will then be baked to ensure maximum protection.

 

GTR

 

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