Anti-wear and anti-corrosion surface treatments and coatings

Eurolls SpA, with nearly 40 years of experience in cold rolling special materials, partners with leading international research institutes to develop state-of-the-art surface treatments and coatings. Their significant investments in high-tech facilities translate to superior product quality and a continuously expanding range to cater to the customers’ evolving needs.

What are the characteristics influenced by surface treatments and coatings? 

• Hardness: some treatments and coatings allow achieving different degrees of surface hardness for greater wear resistance. 
• Low roughness and coefficient of friction: they allow better sliding of the material, with consequent increased durability. 
• High resistance to corrosion and oxidation: essential elements to limit component wear due to external factors, humidity, and atmospheric agents. 
• Wear resistance: abrasive, fatigue, adhesive, and corrosive. 
• Heat resistance: fundamental in high-temperature applications. 
• Electrical insulation: Eurolls has developed treatments suitable for insulating objects made of non-insulating materials. 
• Biocompatibility, for coatings in the medical and food sectors. 
• Anti-adhesive properties: essential in cases where contacting materials may experience bonding phenomena, such as in hot stamping or rolling.

High-thickness anti-wear coatings

Among the surface coatings performed by Eurolls SpA are anti-wear coatings made using welding equipment and MIG technology suitable for hot and cold applications and reconditioning worn components, such as equipment for rolling, handling, and the steel industry. This type of coating involves depositing a layer up to 10 mm thick of hard materials through MIG welding with anthropomorphic robots, with a capacity of up to 1,000 mm in diameter and 1,500 mm in length. Currently, Eurolls performs wear-resistant coatings in chromium alloy and cobalt alloy, suitable for industrial knives, pulleys for metal wire, deburring tools, rolling equipment, etc.

Thermal spray process coatings 

These coatings involve depositing a medium-thickness layer - a few tenths of a millimeter - of hard material that is melted and sprayed onto the element to be coated without ever exceeding 100°C, allowing the treated element to obtain characteristics of thermal and electrical insulation, as well as wear and corrosion resistance. The element to be coated can have a flat surface up to 1,600 x 6,000 mm and a weight of up to 6,000 kg. The technologies used are APS (Air Plasma Spray) for ceramic coatings and HVOF (High Velocity Oxygen Fuel) for carbide coatings.

Coatings by physical vapor deposition

Thanks to a significant collaboration with the Legnaro Laboratories | National Institute of Nuclear Physics, Eurolls SpA has developed a new system based on physical vapor deposition technologies. This process allows for the production of ultra-thin hard coatings, especially in nitrides, carbides, and carbonitrides, achieving high performance in wear, corrosion, bonding, and low friction. This type of coating is applied to finished products (thus avoiding grinding and polishing phases) such as rolls for the wire metal sector and sheet forming and cutting tools. The coating can be applied to cylinders with a diameter of up to 600 mm, a length of up to 700 mm, and a weight of up to 800 kg. This coating increases the life of the rolls by approximately 40%, as once the coating is consumed, the roll begins its service life with the base material.

For in-depth consultation on the best surface coating to improve the characteristics of your products, we invite you to contact the sales team of Eurolls SpA using the references on this page.