UN clad wear plate is a composite abrasion-resistant steel plate manufactured by bonding a high-hardness wear-resistant layer onto a carbon steel or low-alloy steel base plate. È ampiamente utilizzato nel settore minerario, cemento, impianti siderurgici, centrali elettriche, and bulk material handling systems where extreme wear and impact conditions exist.

Unlike solid AR steels (such as AR400 or AR500), clad wear plates achieve wear resistance through a surface overlay layer, while the base plate provides strength and toughness.

What Is a Clad Wear Plate?

A clad wear plate typically consists of two main layers:

• Strato di base: carbon steel or structural steel (for strength and support)
• Cladding layer: high-hardness alloy (per la resistenza all'usura)

The two layers are metallurgically or mechanically bonded to act as a single plate.

Main Manufacturing Processes of Clad Wear Plates

1. Weld Overlay Cladding (Rivestimento duro)

This is the most common process.

Process Principle:

A wear-resistant alloy is deposited onto the steel surface using welding.

Typical Methods:

• Saldatura ad arco animato (FCAW)
• Saldatura ad arco sommerso (SEGA)
• Saldatura ad arco aperto

Cladding Materials:

• Leghe di carburo di cromo
• High chromium iron alloys
• Martensitic wear-resistant alloys

Caratteristiche principali:

• Strong metallurgical bond
• Very high wear resistance
• Suitable for thick wear layers

2. Explosion Bonding (Explosive Cladding)

A high-energy bonding process using controlled explosive force.

Process Principle:

• Two metal layers are accelerated at high speed
• High-pressure impact creates a metallurgical bond

Caratteristiche principali:

• Extremely strong bonding strength
• No melting of base material
• Suitable for large plates

Limitations:

• Higher cost
• Limited thickness control

3. Hot Rolling Cladding

A solid-state bonding process performed under high temperature and pressure.

Process Principle:

• Base plate and cladding layer are heated
• Rolled together under high pressure

Caratteristiche principali:

• Uniform bonding
• Large-scale industrial production
• Good surface quality

4. Laser Cladding (Advanced Process)

A modern precision coating method.

Process Principle:

• Laser melts a small area of base surface
• Powdered alloy is added and fused
• Forms a metallurgically bonded layer

Caratteristiche principali:

• Alta precisione
• Low dilution rate
• Excellent wear and corrosion resistance
• Suitable for high-value components

5. Thermal Spray Coating (Less Common for Plates)

Process Types:

• HVOF (High Velocity Oxygen Fuel)
• Plasma spraying

Caratteristiche principali:

• No deep metallurgical bonding
• Thin coating layer
• Lower cost but weaker bond strength

Struttura della piastra antiusura rivestita

This structure allows the plate to handle both abrasion and structural load.

Caratteristiche prestazionali

Why Clad Wear Plates Have Excellent Wear Resistance

1. Hard Alloy Surface Layer

• High chromium carbides or alloy phases
• Strong resistance to cutting and abrasion

2. Tough Base Steel Support

• Assorbe l'energia dell'impatto
• Prevents cracking and failure

3. Composite Design Advantage

• Combines hardness + toughness in one plate
• Optimized for severe working conditions

Common Industrial Applications

Industria mineraria

• Fodere del frantoio
• Fodere per tramogge
• Benne per escavatori
• Ore chutes

Industria del cemento

• Fodere per mulini di macinazione
• Kiln inlet/outlet liners
• Sistemi di trasferimento materiale

Industria siderurgica

• Attrezzature per impianti di sinterizzazione
• Sistemi di movimentazione del coke
• Piastre antiusura del trasportatore

Power Plants

• Sistemi di movimentazione del carbone
• Ash pipelines
• Wear-resistant ducts

Movimentazione di materiali sfusi

• Truck liners
• Tramogge di stoccaggio
• Scivoli di alimentazione

Advantages of Clad Wear Plates

• Resistenza all'usura estremamente elevata
• Long service life in severe environments
• Can be applied on low-cost base steel
• Suitable for large and complex structures
• Strong impact + abrasion performance
• Customizable thickness and alloy layer

Limitations

• Higher cost than standard AR steel
• Welding requires special procedures
• Surface layer is not easily machined
• Not suitable for precision forming after cladding