Services

Polikim Metal Finishing Company currently provides the following services:

Zinc Plating:

Zinc plating involves the electrolytic application of zinc by immersing clean steel parts in a zinc salt solution and applying an electric current. The low cost, protective quality and attractive look of zinc makes it a very popular finish for fasteners, metal stampings, computer enclosures, automotive parts and many other items. Blue, Yellow and Black Passivation are included.

Zinc-Cobalt Alloy Plating:

Zinc-Cobalt is one of the alloy plating processes that have been developed recently to replace cadmium and to provide enhanced corrosion resistance. It has greater corrosion resistance than zinc. Zinc-Cobalt like zinc can be combined with chromates and sealers to increase corrosion resistance and improve the appearance. There are clear, yellow and black chromate conversion coatings available for the cobalt alloys. The cobalt alloys appear to obtain their increased corrosion protection from a modification of the physical properties of the chromate conversion coatings.

Zinc and Manganese Phosphate Plating:

Zinc Phosphate has a large crystalline structure. The large crystal is an excellent medium for holding oil and adhering to paint. The phosphate also improves lubricity. Appearance is gray.

Manganese Phosphate Plating is used primarily on friction and bearing surfaces to prevent metal-to-metal contact and reduce wear. This coating is also used as a base for dry film lubricants. The crystal is smaller and smoother than zinc phosphate. Appearance is black.

Copper-Nickel-Chrome Plating:

Copper is most commonly used as an underplate or strike because of its excellent adhesion and ductility.

Nickel Plating is a yellowish white, hard reflective finish used for wear resistance, solderability, or dimensional restoration. Nickel plate is often applied over copper and under chromium for a decorative finish.

Chromate coatings are chemical conversion coatings. The substrate metal participates in the coating reaction and becomes a component of the coating. The collaboration has a profound effect on the properties of the coating.

Brass Plating:

Brass plating primarily is a decorative finish. Special preparations are usually not required for plating on most metals. Brass plates very well over zincated aluminum and may be used as a base for nickel plating.

Tin Plating:

Tin is a soft ductile metal that is white in appearance. The deposit can be a bright finish or matte finish. It has great solderability and lubricity properties along with being non-toxic. Bearing surfaces and preventing corrosion in food containers are some applications of tin plating.

Electroless Nickel Plating:

Electroless Nickel is different from most plating, because the process requires no electricity. It is an auto-catalytic chemical reduction coating. This coating can vary in hardness and corrosion resistance, it will deposit uniformly over the entire part, and has a wide variety of uses.

Iron Plating:

It can be zinc-iron alloy plating or nickel-iron plating. An advantage is that iron entering the plating solution through chemical dissolution of steel substrates, which is highly detrimental in straight nickel plating solutions, is readily dissolved and subsequently plated out.

Blast Finishing:

General surface improvement, brushed finishes, providing matte finishes, surface preparation for plating.

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