Engineering surfaces, improving performance: why surface finishing is critical in modern manufacturing

Surface finishing plays a critical role in determining the performance, durability and efficiency of industrial components. From corrosion resistance to electrical conductivity, surface properties directly affect product reliability across sectors such as automotive, electronics and industrial manufacturing. Today, electroplating is no longer just about protection: it has become a required enhancement of advanced components.

For many years, surface finishing was mainly associated with protecting materials and improving their appearance. Today, however, electroplating is increasingly used to impart specific functional properties to components, from corrosion resistance and durability to electrical conductivity and aesthetic quality. Depending on what the plater is looking to accomplish — better conductivity, type of finish or corrosion protection — the plater will use different additive packages to achieve the results they want. This reflects a broader shift towards more customized, application-specific processes, where plating baths, electrolyte chemistries and process conditions are adapted to the needs of different materials, components and industries.

Global regulations have also played an important role in reshaping the industry. One clear example is the gradual transition, in several regions, from hexavalent chrome plating to trivalent chrome plating, driven by safety and environmental concerns. This shows how surface finishing is evolving not only because of performance requirements, but also because manufacturers need to respond to new regulations, safer processes and industrial practices that do not cause/lead to environmental concern.

Modern electroplating processes must address a growing set of technical, operational and regulatory challenges. Manufacturers are expected to achieve consistent surface quality across different materials, geometries and production volumes, while also improving efficiency, reducing costs and complying with stricter environmental and safety requirements. In this context, performance depends not only on the plating chemistry itself, but on the stability of the entire process.

The main challenges companies face today are stability, efficiency, sustainability and safety. Cost control is also critical: platers need to prevent costs from escalating while consistently achieving the required results. This balance between quality, efficiency and cost control is becoming increasingly important for platers and manufacturers operating in competitive industrial markets.

One of the most critical aspects is process stability. Surface finishers need consistency in the products they receive — from raw materials and electrolyte chemistries to electrodes and equipment — in order to produce consistency in the products they deliver. Maintenance, machine operation and cleanliness are equally essential to keeping the process under control over time.

At the same time, energy consumption is becoming a more visible factor in electroplating operations. As companies seek to improve operational efficiency and reduce environmental impact, they are increasingly looking at process improvements that can support lower energy use, better resource management and longer equipment lifecycles. This is especially relevant in sectors where plating is performed at scale and small efficiency gains can translate into meaningful industrial value.

Environmental and regulatory constraints add another layer of complexity. The gradual shift away from certain legacy processes, such as hexavalent chrome plating in regions where restrictions are tightening, shows how surface finishing must continuously adapt to safer industrial practices that do not cause, or lead to, environmental concern. For manufacturers, the challenge is not only to comply with regulation, but to do so while maintaining performance, productivity and repeatability.

Electrochemical processes provide the level of control required to achieve precision and repeatability in surface finishing. In electroplating, the final result depends on several interacting factors, including the bath chemistry, the operating conditions, the material being plated and the specific performance required from the finished component. For this reason, successful electroplating is not only a matter of applying a coating, but of designing and managing a controlled electrochemical environment.

A properly designed anode bath considers shape, structure, function and chemistry. This means that the process must be understood as a system, where each element contributes to the final outcome. The electrode is not an isolated component: its geometry, coating and interaction with the electrolyte must be aligned with the specific application.

This is particularly important because different electroplating processes have very different requirements. An electrode designed for one application cannot simply be transferred to another without considering the chemistry and operating conditions involved- you cannot take an anode that is designed for printed circuit board manufacturing and utilise it in steel electrogalvanization. In other words, process-specific design is essential to achieving the desired level of efficiency, stability and performance.

Within this context, electrodes support uniform deposition, process consistency and resource efficiency. Their design influences how effectively the electrochemical reaction takes place and how consistently the desired surface properties are achieved. This is why, in modern electroplating, the electrode must be considered as part of the broader process architecture rather than as a standard replaceable part.

De Nora’s approach fits naturally into this logic. Our ability to tailor not only the geometry of the electrode, but also the coating protocol, specific to the customer’s needs, is key to their process. This capability is especially relevant in an industry where platers increasingly require customised solutions for different materials, applications and performance objectives.

The impact of surface finishing becomes evident across a wide range of industrial applications, from automotive and aerospace to electronics, steel, consumer goods, and industrial equipment. In each case, surface properties directly influence product performance, reliability and lifecycle: a component may need to resist corrosion, support conductivity, withstand wear or preserve specific aesthetic and functional characteristics over time.

In automotive and industrial manufacturing, for example, surface finishing can contribute to durability, corrosion resistance and longer performance life. In electronics, it can support precision, conductivity and reliability. In steel applications, Electrogalvanizing can help improve surface properties at industrial scale. Across these different contexts, the value of electroplating lies not only in the coating itself, but in its ability to help manufacturers meet specific performance targets with consistency.

This is also where De Nora’s role becomes particularly relevant. The company supports customers by combining process understanding, R&D, lab services, design engineering, manufacturing, technical support and, where available, repair and recoating services. Our ability to understand the customer’s needs — the desired final product, process and requirements — and support the customer through R&D, lab services and technical support is what sets De Nora apart.

Looking ahead, the future of surface finishing will be shaped by increasing demands for sustainability requirements efficiency and performance. Manufacturers will continue to look for solutions that improve quality while reducing waste, energy consumption and process variability. As De Nora experts observe, the company will need to remain flexible and continue to understand different areas where electrochemistry is happening, or could happen, to change or benefit a process.

As performance requirements become more demanding, surface finishing will play an increasingly important role in modern manufacturing: improving product reliability, extending component life and supporting more efficient production.

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