Wear protection

High-performance coatings exactly as needed

Quelle/Source: Eposint

4 Lippensegmente, die mit verschleißbeständiger karbidischer Funktionsoberfläche geschützt sind • Lip segments protected by a wear-resistant metal carbide functional surface

Quelle/Source: Eposint

Quelle/Source: Klaus Vollrath

Beim manuellen Flammspritzen werden Metalldrähte im Lichtbogen aufgeschmolzen und die weißglühenden Tröpfchen mit einem scharfen Pressluftstrahl in Richtung Zielobjekt beschleunigt • In manual flame-spraying, metal wires are melted in an arc and the white-hot droplets accelerated onto the target by means of a concentrated jet of compressed air

Quelle/Source: Klaus Vollrath

1 Beschichtungs-Spezialisten: Lars Lanfranchi (links) und Ralf Altheimer (rechts)
Coating-specialists: Lars Lanfranchi (left) and Ralf Altheimer (right)

Quelle/Source: Klaus Vollrath

2 Förderschnecke mit aufgespritzter Verschleißschutz-Beschichtung • Screw conveyor with sprayed-on anti-wear coating

Quelle/Source: Klaus Vollrath

Quelle/Source: Eposint

3 Verschleißgeschützter Stutzen, der bei der Förderung von abrasivem Schlamm-Wasser-Gemisch eingesetzt wird • Wear-protected nozzle used in the conveyance of abrasive mixtures of slurry and water

Quelle/Source: Eposint

5 Automatisierte Plasmabeschichtung einer Büchse • Automated plasma-coating of a bushing

Quelle/Source: Eposint

6 Beispiel für Kombinations-Beschichtungen: Beim „Excalibur“-Verfahren stützen mit der aufgerauten Oberfläche verklammerte harte Edelstahlpartikel eine darüber aufgebrachte Antihaftbeschichtung aus Fluoropolymeren • Example of combination coatings: in the “Excalibur” process, hard stainless-steel particles locked to the roughened surface support a fluoropolymer anti-stick coating applied over them

Quelle/Source: Eposint

7 Bei großen Teilen ist eine Beschichtung vor Ort oft sinnvoller als Ausbau und zweimaliger Transport. Erfahrene Spezialisten übernehmen in solchen Fällen den schnellen Reparaturservice am Einsatzort • For large components, on-site coating is often more rational than dismantling and transportation in both directions. Experienced specialists provide a high-speed on-site repair service in such cases

Quelle/Source: Eposint

8 Mikroskop und Auswerteeinheit für metallographische Untersuchungen • Microscope and evaluation unit for metallographic analyses

Quelle/Source: Eposint

Quelle/Source: Klaus Vollrath

9 Für spezielle Aufgabenstellungen werden geeignete Sondervorrichtung hergestellt • Suitable special equipment is assembled for special tasks

Quelle/Source: Klaus Vollrath

Summary: In modern machines and other systems, it is frequently the quality of the surface of essential components which decides the correct functioning and performance of the system as a whole. Even in system elements weighing many tonnes, material losses of only a few micrometres or milligrams can sometimes be enough to trip off malfunctions, and cause shutdowns or even high-cost repairs. The causes, and the possibilities for rectification, are extremely diverse, and “off the shelf” formulae for elimination should therefore be avoided. It is, instead, recommendable to consult appropriately qualified specialists for such tasks, both for new developments and when repairs are needed.

Ralf Altheimer, CEO of Eposint AG, of Islikon/Switzerland affirms: “The properties possessed by surfaces are playing an ever more important role in components for mechanical and plant engineering”. (Fig. 1) The material for such parts is generally selected on the criterion of its capability to withstand the mechanical and, frequently, thermal stresses occurring during operation, whereas its surfaces are often required to resist totally different loads. Of particular importance are, for example, protection against chemical and corrosive attack, resistance to wear caused by abrasion, tightness...