A leader in manufacturing complex details and components for the aerospace industry, Superchem finishers provides machined stainless steel seal runners for aircraft engines. Several in-house processes, including precision CNC turning, CNC milling, lapping and OD grinding are incorporated to fabricate the runners. We also perform in-house deburring and dot peen marking. Outside services sourced to our vendor base include heat treatment and a tungsten carbide plasma spray coating.
Aluminum is “anodized” for corrosion resistance, 
hardness & improved appearance,wear resistance, and for a number of specialized reasons like better glue-ability (adhesive bonding) for structural use, improved paint adhesion, and enhanced capacitance in electronic applications.The aluminum is anodized by immersing it in an acid (the electrolyte) and applying DC (direct current) electricity, with the workpiece anodic (positively charged). The electricity splits some of the water in the acid into positively charged hydrogen and negatively charged oxygen, with the oxygen being attracted to the positively charged aluminum surface, where it reacts with the aluminum to form aluminum hydroxide and related compounds
Brass plating is the process of depositing a thin layer of brass onto the surface of a metallic object. This process is performed in a chemical bath that is charged with electricity. The thickness and the quality of the brass plating is determined by the length of time in the bath, the chemicals used, and the configuration of the tank.The process that applies brass plating to an object is known as electroplating. In this process, the substrate — the metal object or surface upon which the brass plating will be applied — and a source of brass are submerged in a chemical bath. Electricity enters the system through the brass and leaves through the substrate. It carries particles of brass through the solution, towards the substrate. Once these particles reach the substrate, they settle on the surface and bind to it.The composition of the chemical bath that the brass is submerged in is significant. Brass plating is almost always done in a cyanide solution. Though there are other chemicals that can be used, most companies continue to use cyanide because it reacts well with the brass.The substrate material and the brass are kept in the electroplating tank while the brass plate grows. It can take anywhere from a few hours to a few days or weeks to create a layer of brass plating on a substrate. The length of time that the process takes depends on the desired thickness of the final product.
Gold plating is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards.With direct gold-on-copper plating, the copper atoms tend to diffuse through the gold layer, causing tarnishing of its surface and formation of an oxide and/or sulphide layer.A layer of a suitable barrier metal, usually nickel, is often deposited on the copper substrate before the gold plating. The layer of nickel provides mechanical backing for the gold layer, improving its wear resistance. It also reduces the impact of pores present in the gold layer. Both the nickel and gold layers can be plated by electrolytic or electroless processes. There are many factors to consider in selection of either electrolytic or electroless plating methods. These include what the deposit will be used for, configuration of the part, materials compatibility and cost of processing. In different applications, electrolytic or electroless plating can have cost advantages. At higher frequencies, the skin effect may cause higher losses due to higher electrical resistance of nickel; a nickel-plated trace can have its useful length shortened three times in the 1 GHz band in comparison with the non-plated one. Selective plating is used, depositing the nickel and gold layers only on areas where it is required and does not cause the detrimental side effects