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Surface Finishes For CNC Machined Brass Parts

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There are also technicalities to consider regarding the surface finish of the CNC machined brass parts apart from the looks. Here’s an overview of the available various surface finishes.

Polishing:

Some of the operations that are done during the finishing of CNC machined brass include debarring with a view of improving some of the features, such as straightness and roundness. It also enhances the looks of the brass in that it makes it shiny and smooth while maintaining the yellow color of the brass. This finish is applied on the part that requires high surface standards and very tight and precise functional tolerances.  

As Machined:

Leaving brass parts as machined implies that the outer surface of the brass would be in the best state after the machining process. This is more of a utilitarian approach because it is more interested in the use of the product than the appearance. But uncoated brass may require some extra layer of protection from corrosion and wear especially in harsh environments.

Powder Coating:

Powder coating is a technique where a dry powder is electrostatically charged and applied on the brass surface to form a layer that enhances the life of the material and its ability to resist rusting. It offers freedom of color and touch and improves the scratch and abrasion resistance characteristics to a very high level. This method increases the durability of CNC machined brass parts, particularly on the outer skin or parts often in contact with industry equipment.

Electroplating:

Electroplating is a process of coating other metals like chrome, zinc, gold, and other metals on the surface of brass using an electric current. In a way, it improves the anti-corrosion and wear resistance characteristics by modifying the surface characteristics to match the requirement. Electroplated brass parts are harder and smoother and hence can be used where there is a need to enhance the surface finish and appearance. All the surface finishing processes have their technical benefits based on the requirement of the CNC machined brass parts, such as wear and corrosion resistance, appearance, and protection of the part from the environment.

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