Wear Protection Solutions for Recycling Plants
In the recycling industry, components encounter everything the waste stream has to offer: waste wood, refuse-derived fuels, construction debris and metal scrap. The mixed material is extremely abrasive, and rotor knives, shredder hammers and anvils face hard impact loads on top of this.
Rotor knives become blunt, shredder hammers break out and screen baskets tear. Every failure in the shredder or in screening and separation technology stops the throughput of the entire plant.
We supply wear protection solutions, spare parts and welding consumables that address exactly these issues and keep your components in service longer.
Typical Welding Defects on Shredder and Comminution Components
On heavily stressed rotor knives, shredder hammers and armour plating, the layer build-up determines service life. The most common damage pattern in the recycling industry arises precisely here. We explain the cause and how we prevent it.
Problem: Cracks and Breakouts in Hard Overlay Layers
If the tough buffer layer is missing, the layer combination is unsuitable, or heat management is uncontrolled, the hard top layer cracks under the impact load in the shredder and breaks out. The component loses its protection abruptly.
Our Solution: Multi-Layer Build-Up of Buffer Layer and Top Layer
A tough base layer absorbs the impact energy; above it, a hard top layer resists abrasion. With matched welding parameters and a suitable filler material, the layer remains stable even under impact and mixed material.
Suitable Welding Consumables for Rotor Knives, Shredder Hammers and Screen Baskets
In the recycling industry, the recyclable material determines the load: fine-abrasive construction debris, impacting metal parts, fibrous waste wood or refuse-derived fuels. We align the welding consumable and layer build-up to this mixed material — following the principle of wear protection to bulk material specification. For fine-abrasive material, carbide-rich hard overlay layers are used; for impact-dominated loads on shredder hammers and anvils, tougher alloys with a buffer layer. Build-up is usually carried out in multiple layers. Via the following wear types you can reach the appropriate welding consumables for each application area.
Corrosion
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Metal-to-metal friction wear
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Impact stress
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Temperature
Show productsSpare and Wear Parts for the Recycling Industry
Bulk materials and mixed materials place permanent loads on recycling equipment. Here you will find suitable wear and spare parts for your equipment:
Fully Automated Overlay Welding and Additive Manufacturing
In the Laser Competence Centre, capilla brings together modern technologies for coating and component manufacturing.
Here, components are specifically treated, wear-resistant layers are applied and complex components are manufactured using additive processes such as 3D cladding.
This enables solutions that go beyond conventional welding applications and make components sustainably more capable.
Andreas Frische
Technical Management
Do you have wear problems, recurring damage or want to operate your plant more economically?
Our experts support you in selecting suitable welding consumables, in treating components and in developing long-lasting solutions.
Together we will find the approach that fits your application both technically and economically.
+49 5202 97790-54
Available from 07:45 - 16:30
a.frische@capilla-gmbh.de
Available from 07:45 - 16:30
Why capilla
Holistic Approach
From welding consumable to finished component – all solutions work together.
Focus on Wear
Specialisation in applications with high abrasion and mechanical load.
Practice-Oriented Consultation
Analysis of real applications rather than theoretical recommendations.
Proprietary Technologies
Laser Competence Centre for coating and additive manufacturing.
capilla Wear Protection to Bulk Material Specification
We do not work with standard recipes. Whether bulk material, medium or workpiece — what matters is always the actual load acting on the component. Grain size, hardness, temperature, flow or chemical aggressiveness determine which type of wear dominates and which protection truly fits.
Before we define the welding consumable, process and layer structure, we analyse the operating conditions. This results in a solution tailored to your component. Tested consumables and defined parameters are part of this — supplemented by standards-compliant documentation for safety-critical components.
Frequently Asked Questions about Wear Protection in the Recycling Industry
In the recycling industry, extreme abrasion acts from mixed materials such as waste wood, refuse-derived fuels, construction debris and metal scrap. Added to this are impact loads on rotor knives, shredder hammers and anvils, as well as continuous material flow in conveying equipment. This combination of abrasion and impact places the highest demands on layer build-up and welding consumable.
Particularly prone to wear are rotor knives, stator knives, counter knives, shredder hammers and anvils in comminution plants, plus screen baskets and floor grates in screening and separation technology. In material handling, impact walls, push floors and linings are affected. These components can be protected or restored by armouring and overlay welding.
Components in the recycling industry are protected by multi-layer hard overlay and functional layers. A tough base layer carries the load; a hard top layer resists the extreme abrasion from mixed materials. This produces layers that permanently withstand both impact from shredder hammers and rotor knives and abrasion from waste wood or refuse-derived fuels.
Wear protection brings significantly reduced wear and longer service lives on rotor knives, shredder hammers, screen baskets and impact walls in recycling. Plants run stably over longer maintenance intervals, unplanned downtime decreases and throughput remains consistent even with changing mixed materials.
Typical defects are cracks and breakouts in hard overlay layers — especially on rotor knives, shredder hammers and armouring in comminution plants. They are usually caused by incorrect layer combination, missing buffer layer or uncontrolled heat management in recycling industry applications.
Cracks and breakouts in shredder hammers, rotor knives and anvils are avoided by a multi-layer build-up of tough base layer and hard top layer. The tough buffer layer absorbs impact energy; the top layer resists abrasion. Added to this are matched welding parameters and suitable welding consumables for the respective load in the shredder.
In the recycling industry, regular maintenance is critical because components such as rotor knives, shredder hammers and screen baskets wear predictably. Near-net-shape repairs by overlay welding maintain the dimensions and function of components without requiring complete replacement. This allows maintenance to be scheduled within existing downtime windows, significantly increasing plant availability.
Welding consumables matched to the respective mixed materials are used. For fine-abrasive materials such as construction debris or mineral fractions, carbide-rich hard overlay layers dominate; for impact-dominated loads on shredder hammers and anvils, tougher alloys. The design follows the principle of wear protection to bulk material specification — referenced to the specific recyclable material.
Quality is assured through inspections and clear processes. Clean preparation of the weld zone, matched welding parameters, suitable welding consumables and controlled heat management form the basis. For safety-relevant components such as rotors in shredders, visual inspections and non-destructive methods are added to ensure hard overlay layers hold permanently.
Overlay welding pays off on rotor knives, shredder hammers, anvils and stator knives wherever components wear predictably from extreme abrasion and impact. Targeted overlay with multi-layer hard overlay layers significantly extends service life and is usually more economical than component replacement in the recycling industry — especially for large or delivery-critical components such as rotors.