Hydraulic systems operate under continuous mechanical stress, where even micro-movements between surfaces can generate progressive damage. Over time, this leads to fretting wear, surface cracking and material loss—factors that directly impact sealing performance and system reliability.
In this context, thermal spray metallization represents a highly effective solution for protecting hydraulic components such as rods, cylinders and shafts. By applying metallic coatings such as copper or aluminium, it is possible to create a functional surface layer that reduces friction, absorbs stress and significantly slows down wear mechanisms.
How Metallization Improves Wear and Corrosion Resistance
Metallization processes, including arc spray and flame spray, allow the deposition of relatively thick metallic layers without affecting the structural integrity of the base material. These coatings act as a protective interface between moving parts, reducing direct metal-to-metal contact and improving lubrication behaviour.
Copper-based coatings are particularly effective in applications involving high loads and friction. Their ductility and natural ability to retain lubricants within their microstructure make them ideal for dynamic hydraulic systems. Aluminium coatings, on the other hand, provide excellent corrosion resistance and are widely used in environments exposed to moisture, chemicals or marine conditions.
By selecting the appropriate material—or a tailored alloy combination—engineers can optimise performance based on the specific operating environment.
Controlled Application and Process Integration
At TSS, metallization is carried out through controlled processes designed to ensure consistent coating quality and adhesion. Surface preparation plays a critical role, as it defines the bond strength between the coating and the substrate.
The application process is fully integrated with finishing operations to achieve the required surface characteristics for hydraulic sealing systems. This includes precision machining and honing to reach low surface roughness values, ensuring optimal compatibility with seals and minimising friction during operation.
The key stages of the process include:
- surface preparation through grit blasting to optimise adhesion
- thermal spray metallization using arc or flame systems
- controlled layer build-up to restore dimensions or enhance performance
- finishing operations to achieve precise tolerances and surface finish
This structured approach ensures that each component meets both mechanical and functional requirements.
Performance in Real Operating Conditions
In practical applications, metallized hydraulic components demonstrate a significant reduction in wear rates compared to untreated or conventionally coated surfaces. The presence of a softer, sacrificial metallic layer helps absorb mechanical stress and prevents the propagation of surface damage.
At the same time, the improved lubrication behaviour reduces friction and heat generation, contributing to smoother operation and longer component life. In corrosive environments, aluminium-based coatings provide an additional protective barrier, further enhancing durability.
These combined effects translate into more stable system performance, fewer failures and reduced maintenance interventions.
Industrial Value and Maintenance Optimisation
For companies operating hydraulic systems in sectors such as construction, marine, energy or heavy industry, reliability is a key performance driver. Metallization offers a practical and cost-effective way to extend component lifespan without the need for complete replacement.
By reducing downtime, improving wear resistance and enabling component refurbishment, this technology supports a more efficient maintenance strategy. In an industrial landscape increasingly focused on cost control and sustainability, extending the life of existing components is a clear competitive advantage.
Partnering with TSS means leveraging advanced thermal spray coating expertise and tailored metallization solutions designed to meet real operating conditions and performance targets.