When it comes to surface finishing techniques, decorative electroplating and hard chrome plating are two widely used methods that serve distinct purposes. Industries relying on durable, high-performance components often turn to these processes to improve functionality and extend the lifespan of parts. But what sets them apart? Below, Australian Surface Technologies will walk you through the differences so you can choose the right solution for your needs.
What is Decorative Electroplating?
Decorative electroplating typically involves coating a material with a thin metallic layer using a process called electrolysis. This process is often used to enhance the appearance, conductivity or corrosion resistance of a component. Metals like nickel, copper and silver are commonly used in decorative electroplating, making it a preferred choice for decorative finishes or light-duty applications.
While decorative electroplating offers aesthetic and functional benefits, its thin coating – typically only a few microns thick – makes it unsuitable for heavy-duty use. Over time, the layer may wear off, especially in high-friction or abrasive environments.
What is Hard Chrome Plating?
Hard chrome plating, also known as industrial hard chrome plating, is a plating process designed for functionality rather than aesthetics. It involves applying a thicker layer of chromium to a metallic surface, offering exceptional wear and abrasion resistance. This process is widely used in industries such as mining, manufacturing, and oil and gas, where machinery faces extreme stress and harsh conditions.
The thicker chrome layer acts as a sacrificial wear layer, protecting the underlying material. Components like hydraulic cylinders, rollers and pump shafts can benefit from hard chrome plating due to it reducing friction, extending component lifespan and increasing repairability.
Key Differences Between Electroplating & Hard Chrome Plating
Coating Thickness
Decorative electroplating applies a thin layer of metal, primarily for decorative or light-duty purposes. In contrast, hard chrome plating typically features a much thicker layer, ranging from 20 to 250 microns or more, making it far more durable and resistant to wear.
Functionality
Decorative electroplating is ideal for enhancing appearance or adding specific properties like conductivity. Hard chrome plating is specifically engineered to withstand high wear and friction, making it indispensable for heavy-duty applications.
Repairability
One of the standout benefits of hard chrome plating is its repairability. Worn or damaged parts can be re-plated, restoring them to like-new condition. This process is both cost-effective and sustainable, as it reduces the need for part replacements.
Applications
Electroplating is commonly used in jewellery, electronics and automotive finishes. Meanwhile, industrial hard chrome plating is essential for sectors where components endure extreme wear, such as mining and manufacturing.
Why Choose Hard Chrome Plating for Heavy-Duty Applications?
For heavy-duty applications, hard chrome plating offers unmatched durability and efficiency. Its ability to act as a sacrificial wear layer significantly extends the lifespan of machinery components. The re-plating process allows parts to be repaired more affordably compared to sourcing new ones. That said, while hard chrome provides some corrosion resistance, it is not entirely corrosion-proof, particularly in marine environments. For such applications, additional protective measures may be required.
Contact Australian Surface Technologies Today
Australian Surface Technologies specialises in industrial hard chrome plating, offering tailored solutions to meet the unique challenges of the industrial sector. If you want to keep your equipment operating at peak performance while reducing downtime and maintenance costs, enquire with us today to learn more about our hard chrome plating services.