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Plate Guide

Plating is the depositing of an adherent metal onto the surface of a base metal. This depositing is accomplished on industrial parts by means of electroplating or hot dipping. These methods are the most commonly used on industrial parts because they can be accomplished in bulk cost competitive processes. Other methods of depositing adherent metal to a part such as spraying molten metal, metalizing, d-gun, chemical vapor deposition, enameling, and metal coating are expensive due to cost associated with setup and the processing equipment.

Electroplating is one of the most common methods of plating. This process is done in a water-based solution. Chemical compounds of a metal are deposited in the water-based solution. Parts to be plated are submerged into a tank containing this solution. As an electrical current is introduced to the solution, the plating metal precipitates out and is collected on the part to be plated. Strength of the solution and plating time affect the amount of plate that is deposited on the part.

Large volume parts may be placed in a non-metal mesh barrel and placed into the plating tank. The barrel is rotated and parts are exposed to the solution on an uniform basis. This process can cause damage to parts as they bump and knock one another during the plating operation. It is wise to barrel plate small parts only in this process. Another process used prior to the immersion of parts in the plating solution is to place them individually on a rack. The rack is lowered into the solution for plating. This process is more expensive because each part must be individually handled twice in the racking process (placing it on the rack and taking it off).

Lyn-Tron PartsThe process of mechanically depositing a metal coating onto a part's surface is accomplished by a high impact of the plating material. The plating material is propelled by means of a spray gun or explosion. This high impact cold-welds the material to the parts surface. The majority of all Lyn-Tron's finishes use an electroplating process.

Care must be taken in the manufacture of precision electronic hardware that is to be plated. Because plating will produce a layer of material onto the part being plated, the part may have to be manufactured to a pre-plate tolerance. These parts need to be quality checked with pre-plate gages to assure manufacturing within tolerances.

Inferior or bad plating may be chemically stripped and the part replated. When a part is stripped and replated, the stripping process must be watched closely to assure that base metal is not stripped off during this process.

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