Electroplating Service
Electroplating is a finishing process broadly adopted in various industries to coat metal objects with a thin layer of a different metal to achieve the desired property that the original workpiece lacks. The process is called electrodeposition. It is primarily used to modify the surface properties of an object, such as abrasion, wear or corrosion resistance, lubricity, or aesthetic qualities. Additionally, electroplating is sometimes adopted to increase undersized parts' thickness or form objects with electroforming.
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What is Electroplating?
A workpiece encounters changes to its chemical, physical, and mechanical properties with electroplating. The use of an electrical current reduces dissolved metal cations from a solution (ions with a net positive charge) so that a thin, coherent metal coating is formed on the workpiece itself, which serves as a negative electrode (anode).
Plating is a finishing process that deposits metal onto a conductive surface to achieve decorative, resistance, solderability, wearability, strengthening, friction reduction, adhesion, and various other properties. Although the plating process has been carried out throughout the ages, it is a critical process in modern technology. The discovery for its use in nanotechnology was made when the plating of objects as small as atoms occurred through thin-film deposition. In recent times, plating can often occur with the use of liquids.
There are several plating methods; among them, there are numerous variations. Electroplating supplies an ionic metal with electrons to form a non-ionic coating to a substrate. See Electroplating finishing process for more information.
Historically, the subtractive machining process was manual. Processes such as woodcarving, forging, and filling of metals, once done by hand, have undergone rapid advancements over the past century and now broadly incorporate technology that makes them more efficient and precise. The automated nature of CNC machining makes it possible to create simple, high-precision parts with high accuracy; and to fabricate unique, medium-scale production series cost-effectively.
What is Electroplating?
Electroless plating is a chemical method that involves several simultaneous chemical reactions with the use of an aqueous solution. One of the electroless plating methods occurs when a solid surface is covered with a thin metal sheet, which subsequently undergoes an application of heat and pressure to fuse them.
There are many specific materials used in plating, for example, alloy, cadmium, chrome, composite, gold, nickel, rhodium, silver, tin, zinc, and zinc-nickel. Jewelry typically uses plating to give a silver or gold finish. Metallizing refers to coating metal on non-metallic objects.
Electroless plating, also known as autocatalytic plating, is a purely chemical process that makes a component tougher, friction-resistant, corrosion-resistant, and aesthetically appealing. As its name suggests, electroless plating uses no electricity in the plating process compared to electroplating. It is a good alternative for industries that seek a cost-effective, simplified method for coating their parts with metal.
Parts with complex shapes requiring uniform thickness or are susceptible to heavy corrosive factors can particularly benefit from electroless plating. For example, molds and food processing machine parts are used in the foodservice industry. Also, the oil and gas, automotive, aerospace, chemical, plastics, and textiles industries are prime candidates for electroless plating.
Electroless plating is a much simpler process than electroplating. It uses a power source to deliver electricity to a component immersed in a chemical solution, altering the chemical composition and depositing a hard, durable metal coating to its surface. As with electroplating, the part must be thoroughly cleaned to remove oils and other corrosive elements before being immersed in the aqueous solution where anti-oxidation chemicals are added.
Electroless nickel plating eliminates the need for complex filtration equipment and danger due to electricity-related accidents. It is also suitable for military applications thanks to its non-reflective appearance, usually a dull silver-gray. Electroless nickel/Teflon can be applied over various substrates, including stainless steel, aluminum, copper, brass, and others.
Electroplating service
Electroplating works when submerging one or more pieces of metal into a solution that has ions of another metal-type dissolving in it. An electric current runs through both the plating project and the plating solution. The resulting electric charge causes ions of the plating solution to adhere to the open surface areas of the metal piece. Depending on the desired plate thickness, a piece may stay in a bath of electrically charged solution for anywhere from 5 to 45 minutes.
Electroplating has two methods: barrel method or rack method. As a result, both methods utilize an electrical current to bond the metals, but they serve very different purposes. Barrel plating primarily works best when working with small parts in high quantity. As a result, all of the parts are being put into a “barrel” for dipping the parts into the plating bath. Rotating the barrel which causes its contents to churn, allowing the plating to gather at all open surface areas with metallic ions.
Rack plating is most useful when working with an individual or oddly shaped item. This method involves fastening an individual object to a rack (or a hook), which is then dipped by hand into the plating bath. Because of the fragile nature of most antiques and medical instruments, this is often the preferred method of plating.
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