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ATF Crusher Parts
Piezas de Desgaste para Reciclaje y Demolición | ATF

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Piezas de Desgaste para Reciclaje y Demolición | ATF

Componentes resistentes al impacto para reciclaje C&D, chancado de concreto y demolición. Piezas martensíticas y manganeso para tolerancia a armadura.

Minería Agregados Cemento Reciclaje
Soluciones industriales

Wear Parts for Recycling Applications

Recycling operations face a fundamentally different challenge than virgin rock crushing — unpredictable feed streams with embedded metal, rebar, wire mesh, and tramp materials that can cause instantaneous wear part failure. The materials that provide maximum hardness and abrasion resistance in clean quarry rock become liabilities in recycling applications because they are brittle enough to shatter on contact with steel reinforcement. Material selection must prioritize impact toughness over maximum hardness — choosing parts that deform under unexpected impact rather than fracture.

Construction and demolition (C&D) waste, recycled concrete aggregate (RCA), reclaimed asphalt pavement (RAP), and mixed demolition waste all present variable feed quality that changes daily — sometimes hourly. Clean concrete one load, heavily reinforced structural concrete the next. This variability means wear parts cannot be optimized for a single feed type. They must be versatile enough to handle the worst-case contamination scenario while remaining cost-effective for the typical feed mix.

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Mobile impact crusher processing demolition concrete with rebar contamination at a C&D recycling operation

C&D Recycling Operation

Impact crusher processing demolition concrete — material selection must tolerate embedded rebar and wire mesh

Desafíos de la industria

Why Recycling Operations Need Different Wear Parts

Recycling is the only crushing application where the feed material actively tries to break the wear parts. In every other application, rock wears parts through abrasion and compression. In recycling, embedded steel reinforcement creates point-loading impact events that exceed the design limits of brittle materials. Understanding these four challenges is essential for selecting materials that survive recycling duty.

Metal Contamination

Rebar, wire mesh, structural steel, bolts, nails, and miscellaneous metal embedded in demolition concrete create sudden impact events. These point loads can shatter high-chrome or ceramic components instantly. The severity depends on the rebar diameter, concrete reinforcement density, and whether upstream magnetic separation is functioning.

Variable Feed Quality

C&D waste quality changes with every load. A morning of clean sidewalk concrete followed by an afternoon of heavily reinforced structural demolition. Wear parts cannot be optimized for a single feed type — they must handle worst-case contamination while remaining cost-effective on typical material.

Mobile Operations

Most recycling operations use mobile or portable crushers that move between job sites. Feed material characteristics change with each site. Wear parts must be versatile across different contamination levels, concrete strengths, and aggregate types encountered at different locations.

Safety Considerations

Brittle wear part failure in the presence of tramp metal creates a fragment ejection hazard. High-chrome blow bars that shatter can eject fragments at high velocity from the crusher discharge. Material selection in recycling must account for operator safety — tough materials that deform rather than shatter are inherently safer in contaminated feed applications.

Selección de materiales

Material Selection by Contamination Level

Material selection in recycling is driven primarily by the contamination level — specifically, the proportion and type of metal in the feed stream. The cleaner the feed, the harder and more abrasion-resistant the material can be. As contamination increases, toughness becomes the dominant selection criterion.

Low (<2% metal by wt.)
Equipo
HSI, jaw crusher
Piezas de desgaste
Blow bars, jaw plates
Material
High-chrome (HRC 58-65)
Por qué
Minimal tramp metal risk — abrasion resistance priority
Moderate (2-5% metal)
Equipo
HSI, jaw crusher
Piezas de desgaste
Blow bars, jaw plates
Material
Martensitic steel (HRC 50-55)
Por qué
Balance of toughness and wear resistance
Heavy (>5% metal)
Equipo
HSI with pre-screening
Piezas de desgaste
Blow bars, jaw plates
Material
Martensitic steel (HRC 48-52)
Por qué
Maximum toughness — impact resistance is the priority
Mixed / unknown
Equipo
HSI, jaw crusher
Piezas de desgaste
Blow bars, jaw plates
Material
Martensitic steel (HRC 50-55)
Por qué
Must handle worst-case contamination on any load
Asphalt (RAP)
Equipo
HSI
Piezas de desgaste
Blow bars, impact plates
Material
Martensitic or high-chrome
Por qué
Low contamination but sticky material — depends on cleanliness

IMPORTANT: When contamination level is unknown or variable, always select for the worst-case scenario. Using high-chrome blow bars in a feed stream with unexpected rebar creates both a performance failure and a safety hazard. Martensitic steel is the default for recycling applications unless the operation can guarantee clean, metal-free feed.

Guía de equipos

Recycling Crushing Equipment

Recycling circuits are simpler than mining or aggregate circuits — typically one or two crushing stages with magnetic separation. Mobile equipment dominates. ATF manufactures wear components for the primary crushing equipment used in recycling operations.

HSI Impact Crushers

HSI Impact Crushers

The primary crushing method for C&D recycling. Mobile HSI crushers (NP series, QI, Trakpactor, CI, MR series) process concrete, asphalt, and mixed demolition waste. Blow bars, impact plates, and side liners are the primary wear components.

→ View Impact Crusher Parts
Jaw Crushers

Jaw Crushers

Primary reduction for heavily reinforced concrete and oversized demolition material. Mobile jaw crushers (C96, C106, QJ241, QJ341, Premiertrak, MC110) reduce large chunks before impact crushing.

→ View Jaw Crusher Parts
Hammer Mills & Shredders

Hammer Mills & Shredders

Size reduction for mixed waste streams, wood waste, and scrap metal preparation. Hammer tips, grates, and rotor components.

→ View Hammer Crusher Parts

Processing contaminated feed?

Tell us what you're crushing, your contamination level, and your current wear part issues — ATF recommends materials that survive recycling duty.

Correo: info@atfcs.com

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Patrones de desgaste

Wear Patterns Specific to Recycling Operations

Recycling wear patterns differ from quarry or mining patterns because contamination — not just rock abrasion — is the dominant wear mechanism. Recognizing these patterns helps identify whether material selection or feed preparation is the root cause.

Blow Bar Breakage / Fracture

Complete fracture of a blow bar — the most serious failure mode in recycling. Almost always caused by using high-chrome or ceramic material in feed with uncontrolled metal contamination. The bar shatters rather than deforming. Solution: switch to martensitic steel and improve upstream metal detection / magnetic separation.

Impact Plate Gouging

Deep localized gouging on impact plates from rebar strikes. Normal in recycling applications — indicates the plates are absorbing rebar impacts as designed. If gouging is excessive, the impact plates may need more frequent rotation or heavier-duty material. Check magnet effectiveness upstream.

Jaw Plate Lip Breakage

The lip (top edge) of jaw plates breaking off in recycling applications. Caused by oversized reinforced concrete entering the jaw chamber and creating abnormal stress at the plate edges. Indicates feed is too large for the jaw opening, or pre-screening is inadequate.

Accelerated Side Liner Wear

Side liners in impact crushers wearing faster in recycling than in quarry applications. Rebar and wire mesh ricochet off blow bars and impact the side liners at angles and intensities not typical in clean rock. Normal for recycling duty — plan for higher side liner consumption than equivalent quarry operations.

Cuándo actualizar

Material Selection Decisions in Recycling

In recycling, "upgrading" materials does not always mean selecting harder alloys. Sometimes the correct move is to downgrade hardness in favor of toughness. The decision depends entirely on the contamination level and whether it can be reliably controlled.

High-chrome blow bars breaking on rebar
Considerar actualización cuando
Any rebar contact causing fracture
Ruta de actualización
Switch to martensitic steel
Martensitic blow bars wearing too fast in clean concrete
Considerar actualización cuando
Feed is genuinely clean with minimal metal
Ruta de actualización
Upgrade to high-chrome (only if feed is genuinely clean)
Blow bar breakage after installing magnetic separator
Considerar actualización cuando
Feed cleanliness has measurably improved
Ruta de actualización
Retest with high-chrome on trial basis
Jaw plates cracking in heavy demolition
Considerar actualización cuando
Oversized feed or high metal content
Ruta de actualización
Ensure Mn18 or Mn22, not Mn13
Any material breaking rather than wearing
Considerar actualización cuando
Fracture events occurring
Ruta de actualización
Reduce hardness, increase toughness

CRITICAL PRINCIPLE: In recycling, the safest material is the one that deforms under impact rather than shattering. Gradual wear is acceptable and replaceable. Sudden fracture is dangerous, costly, and preventable through correct material selection.

Preguntas frecuentes

Recycling Wear Parts — Common Questions

Encuentre respuestas a preguntas comunes sobre piezas de desgaste para esta aplicación. ¿No encuentra lo que busca?

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Why can't I use high-chrome blow bars for recycling?
You can — but only if the feed is genuinely clean with less than approximately 2% metal by weight. High-chrome white iron (HRC 58-65) is extremely hard but brittle. It provides excellent abrasion resistance in clean rock but shatters on contact with rebar or structural steel. In feed with uncontrolled metal contamination, high-chrome blow bars are both a performance liability (breakage causes unplanned downtime) and a safety hazard (fragment ejection). Martensitic steel (HRC 50-55) is the standard for recycling because it deforms rather than shatters.
How do I reduce blow bar consumption in C&D recycling?
Three approaches, in priority order: (1) Improve upstream metal separation — a stronger magnet and better pre-screening reduce the impact events that damage bars. (2) Match material to contamination level — don't use brittle materials that break. (3) Rotate blow bars at the correct interval — rotating before one side is fully worn extends total bar life by distributing wear across all surfaces.
What jaw plate material works for demolition concrete?
Mn18Cr2 is the standard starting point for jaw crushers processing demolition concrete. It provides sufficient toughness to handle rebar and wire mesh without cracking. Mn22Cr2 is justified for heavy structural demolition with thick rebar and high metal contamination. Mn13 is not recommended for demolition — its lower toughness increases the risk of plate cracking under tramp metal impact.
Do I need different wear parts for asphalt recycling (RAP)?
RAP (reclaimed asphalt pavement) is typically less contaminated than concrete demolition waste, but the material is sticky and temperature-sensitive. The same blow bar materials used for concrete recycling work for RAP, but wear rates differ. High-chrome may be appropriate for clean RAP operations. The bigger challenge is material handling and buildup, not wear part selection.
How does a magnetic separator affect wear part selection?
A properly functioning magnetic separator allows you to consider harder, more wear-resistant materials because it removes the tramp metal that causes brittle failure. Without effective magnetic separation, you must assume worst-case contamination and select tough, impact-resistant materials. The quality of upstream metal detection directly determines the range of materials available for wear part selection.
Are mobile crusher parts the same as stationary crusher parts?
For wear components (blow bars, jaw plates, impact plates, side liners), the parts are dimensionally identical between mobile and stationary versions of the same crusher model. A Metso NP1213M mobile uses the same blow bars as a stationary NP1213. The mobile chassis, hydraulics, and feed system are different, but the crushing chamber and wear components are the same. ATF supplies wear parts for both mobile and stationary configurations.

Recycling-Grade Wear Parts, Factory Direct

Tell us what you're crushing, your contamination level, and current wear part challenges. ATF recommends materials that survive your recycling application.

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ISO 9001 Certified
Factory Direct

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