Surfaces

The right surface for your applications. Select the right surface for your product from our wide range of options.

Our surfaces

  • Pickling
  • Bonderizing
  • Browning
  • Chromium
  • Chromating
  • Dacromet
  • Delta-Protect
  • Electrolytic Polishing
  • Anodizing
  • Colour Anodizing
  • Hot-Dip Galvanizing
  • Hot-Dip Tinning
  • Geomet
  • High Temperature Galvanizing
  • CDP-Coating
  • Painting
  • Microcor
  • Passivating
  • Phosphatizing
  • Polishing
  • Grinding
  • Gold Plating
  • Copper Plating
  • Brass Plating
  • Nickel Plating
  • Silver Plating
  • Zinc Plating
  • Tin Plating
  • Zinc-Iron
  • Zinc Coating With Lamellar Structure
  • Zinc-Nickel
 

Pickling

Pickling

The process of obtaining a bright surface trough the use of acids (hydrochloric acid or sulphuric acid) is called pickling.

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Bonderizing

Bonderizing

Slight corrosion protection only. Good adherend surface for paints. Grey to greyblack appearance. Improved corrosion protection by subsequent oiling.

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Browning

Browning

Chemical treatment. Bath temperature about 140°C with subsequent oiling. For decorative purposes. Slight corrosion protection only.

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Chromium

Chromium

Bright chromium is used predominately for decorative purposes. Nickeling is frequently used as a pre-treatment. Chromium plated surfaces can be ordered in mat, with mirror finish or in black.

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Chromating

Chromating

Follows right after the zinc coating by a short dip into chromic acid solutions. The chromating process improves corrosion protection preventing clouding and discolouration of the zinc coat. The protection provided by the chromium coat varies depending on the type of processing. Contrary to the passivation the chromating contains chromium VI.

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Dacromet

Dacromet

Zinc coating with lamellar structure providing high corrosion protection. The corrosion resistance depends on the plating thickness. Barrier effect through lamellar structure of the film. Controlled cathodic Farbprotection of the zinc in the ratio to the ferrous substrate. Retardation of the natural zinc and aluminium consumption by the film passivation. Drying is done with subsequent burning-in at 300°C. Dacromet contains chromium VI.

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Delta-Protect

Delta-Protect

Zinc coating with lamellar structure providing high corrosion protection. Silvery appearance. Complies with the EC-ordinance for used cars and electric appliances. Hydrogen embrittlement is avoided.

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Electrolytic Polishing

Electrolytic Polishing

Treatment to brighten the stainless steel surface in acid baths. This is done to obtain a surface with mirror finish.

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Anodizing

Anodizing

A protective coat is produced for aluminium by way of anodic oxidation. The same provides corrosion protection preventing specking at the same time. It is possible to obtain almost all shades of colours for decorative purposes.

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Colour Anodizing

Colour Anodizing

The transparent anodized coating, which is produced during the anodizing matches the natural colour of the aluminium. Right after this colourless oxidation the coat can be tinted by an electrolytic process with the assistance of the metal salt solution. The metal oxides, which have been intercalated in the open-pored anodized coat provide non-fading shades of colour. Their brightness may be graded from light beige to bronze or even black. The colour effect does not originate on the surface of the material but at the base of the pores of the anodized coating being fully protected against environmental influences.

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Hot-Dip Galvanizing

Hot-Dip Galvanizing

Dipping in a zinc bath with a temperature of about 440°C to 470°C. Minimum plating thickness is 40 μm. Surface mat and irregular, specking may occur after relatively short time. Very efficient corrosion protection.

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Hot-Dip Tinning

Hot-Dip Tinning

During this process the objects to be tinned are dipped into a molten tin bath (hot dipping) after appropriate pre-treatment. When the objects are lifted out of the bath the tin will cling to the surface forming a firm coat of tin when cooling down.

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Geomet

Geomet

Zinc coating with lamellar structure providing high corrosion protection. Coating from zinc and aluminium with lamellar structure in a primary phase on the base of silicon oxide (passivation throughout the entire layer structure). Geomet 321 is a thin coat for corrosion protection of parts from steel, cast iron or other ferrous metals, which is applied through an electrolytic process. Coating by way of cold dipping in aqueous solution or spraying.

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High Temperature Galvanizing

High Temperature Galvanizing

Generally high temperature galvanizing is used for the treatment of small parts. The bath temperature is set to above 530°C. For the “standard” hot-dip galvanizing it is set to 450°C. After the galvanizing process the small parts are spun to remove surplus zinc. This spinning process guarantees e. g. a high fit accuracy of threads and the uniformity of the zinc coat. There will be no need for rework like the cutting of threads. The parts will be free of zinc projections or zinc runners.

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CDP-Coating

CDP-Coating

(CDP stands for ”cathodic dip-painting”) This term is generally used to describe all dip-painting processes where the separation of the paint is a consequence of chemical conversions (coagulation) of the binding agent. In the most frequently used production processes the conversions are caused by an electric current flow from an outer electrode via the conductive paint to the workpiece.

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Painting

Painting

Mass-produced parts are painted with the assistance of two component paints to comply with the colour sample or any RALcolour.

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Microcor

Microcor

Zinc coating with lamellar structure providing high corrosion protection. The corrosion resistance depends on the plating thickness.

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Passivating

Passivating

Passivating is done right after the galvanizing by a short dip in chromic acid solutions. The chromating process increases the corrosion protection preventing clouding and discolouration of the zinc coat. The protective effect of the chromium coat varies depending on the type of processing. Contrary to the chromating process the passivation contains no chromium VI. A difference is made between thick-film and thin-film passivating (blue, transparent).

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Phosphatizing

Phosphatizing

Just a slight corrosion protection. Good adherend surface for paints. Grey to greyblack appearance. Improved corrosion protection by subsequent oiling.

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Polishing

Polishing

Grinding of surfaces with gradually finer materials to obtain a low depth of irregularities. This will make the surface smooth and shiny.

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Grinding

Grinding

Surfaces with abrasion marks to make them more interesting. It is applied on stainless steel parts, which are used for decorative purposes.

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Gold Plating

Gold Plating

Gold applications are made for decorative purposes.

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Copper Plating

Copper Plating

Copper films are preferred for uses in the electrical industry. They stand out for their very efficient conductivity. If necessary, as precoat before the nickel plating, chromium plating and silver plating. As the top film for decorative purposes.

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Brass Plating

Brass Plating

Brass applications are mainly used for decorative purposes. Steel parts are also brass plated to improve adhesive strength of rubber on steel.

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Nickel Plating

Nickel Plating

It is used for both decorative purposes and corrosion protection. Due to the hard film applications are known in the manufacture of both electric equipment and telephone industry. Specifically for screws there is no abrasion of the coat. Nickel plated iron parts are not recommended for outside atmospheres. Improvement of the corrosion protection by impregnating.

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Silver Plating

Silver Plating

Silver applications are used for decorative and technical purposes.

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Zinc Plating

Zinc Plating

Surface finishing of steel to protect it against corrosion. A difference is made between an “alkaline” and “acid” process. In the alkaline zinc plating (pH-value 11) the dispersion (e. g. in the interior of the tube) is better. The acid zinc plating (pH-value 5) is more commonly used (95%). The electro galvanizing is the most frequently used and most cost efficient process to obtain a reliable corrosion protection. Possible secondary treatments are passivating and chromium plating.

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Tin Plating

Tin Plating

We know the chemical tin plating and the electrolytic tin plating. Higher plating thicknesses can be obtained with the electrolytic tin plating process. For the chemical tin plating the maximum plating thickness is 1 μm. This also allows for a coating of inside surfaces. The tin plating is mainly used to obtain respectively improve the soldering capacity in the electrical industry. It serves as a corrosion protection as the same time. As an alternative the tin film, which is applied in the electrolytic process, is used for decorative purposes.

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Zinc-Iron

Zinc-Iron

The electrolytic zinc-iron plating is a coating with an zinc alloy demonstrating with just a low iron content a significantly improved corrosion protection as compared to the pure zinc films. Zinc-iron offers a high long time corrosion protection, even in cases of heavy thermal loads. Possible secondary treatments are passivating, chromium plating, sealing and coatings by annealing. The appropriate secondary treatment is decisive for the appearance and white rust resistance of workpieces with zinc-iron coating. In combination with the suitable plating thickness of the zinciron coating a high protection against red rust.

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Zinc Coating With Lamellar Structure

Zinc Coating With Lamellar Structure

Zinc coatings with lamellar structure provide an optimal corrosion protection. The coating consists of a mixture from zinc and aluminium with lamellar structure. They are mainly used in the automotive industry. Zinc coatings with lamellar structure are e. g. Delta-Protekt, Dacromet, Geomet, Microcor.

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Zinc-Nickel

Zinc-Nickel

The electrolytically deposited zinc-nickel alloy complies with the extremely high anticorrosion requirements of the automotive industry. Zinc-nickel offers a high longtime corrosion protection even under heavy thermal loads. The contact corrosion of steel parts in combination with aluminium is avoided. Possible secondary treatments are passivating, chromium plating, sealing and grinding.

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