CNC machining with silver and nickel plating combines the precision of computer - numerical - controlled machining with the enhanced properties provided by these plating processes. CNC machining ensures high - accuracy shaping of components, while silver and nickel plating endows the machined parts with unique characteristics that extend their functionality and lifespan.

Silver plating on CNC - machined components offers excellent electrical conductivity. Silver has one of the highest electrical conductivities among metals, making it ideal for parts used in electrical and electronic devices. For example, in connectors, switches, and circuit boards, silver - plated surfaces reduce electrical resistance, minimize signal loss, and improve overall electrical performance. Additionally, silver has good thermal conductivity, which helps in dissipating heat generated during the operation of electronic components. The aesthetic appeal of silver plating is also a significant advantage, as it provides a shiny, reflective surface that is often preferred in consumer electronics and decorative applications. However, silver is prone to tarnishing when exposed to sulfur - containing compounds in the air. To address this, a protective top - coat is usually applied after silver plating to maintain its luster and corrosion resistance.

Nickel plating, on the other hand, offers a different set of benefits for CNC - machined parts. Nickel plating provides excellent corrosion resistance, protecting the underlying metal from oxidation and environmental damage. This makes it suitable for components used in harsh environments, such as automotive parts exposed to road salt, moisture, and varying temperatures, or marine equipment facing the corrosive effects of seawater. Nickel - plated surfaces also have good hardness and wear resistance, which is crucial for parts that experience friction and mechanical stress, like gears, shafts, and bearings. Moreover, nickel plating can serve as a base layer for other plating processes, such as chrome plating, enhancing the adhesion and performance of the subsequent coatings. In the manufacturing of CNC - machined components, the combination of silver and nickel plating can be strategically used. For instance, nickel can be used as an undercoat to provide corrosion protection and a smooth surface, followed by a silver plating layer to achieve the desired electrical properties, resulting in parts that meet multiple performance requirements.