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10 · Chapa Antidesgaste

Antidesgaste
Chapas de Aço

Do impacto severo à abrasão extrema: chapas AR400, AR450 e AR500 mais chapa bimetálica de carboneto de cromo — o grau certo para cada zona de desgaste, entregue cortado sob medida, calandrado ou furado conforme desenho.

Solicitar cotação Todas as linhas de produtos
Graus
AR400 · AR450 · AR500 · Bimetálica (CCO)
Dureza
370–540 HBW · camada CCO 58–65 HRC
Fornecimento
Cortada sob medida · calandrada · furada conforme desenho
Aplicações
Caçambas, silos, calhas, dutos, alimentadores, caçambas de caminhão
Disponibilidade
Prontas para pedido ou projetadas sob medida — Máxima produtividade · Maior vida útil · Aplicação especial

Os graus de chapa

O grau certo para cada zona

Chapa antidesgaste AR400

370–430 HBW

Chapa AR 400

Alta tenacidade, excelente soldabilidade e conformabilidade — impacto moderado: caçambas, silos, calhas, alimentadores.

Chapa antidesgaste AR450

420–475 HBW

Chapa AR 450

O equilíbrio dureza-tenacidade — britagem, mineração pesada e escavação.

Chapa antidesgaste AR500

470–530 HBW

Chapa AR 500

Máxima resistência à abrasão — revestimentos de moinhos de impacto, zonas de abrasão severa, pontos de transferência.

Chapa bimetálica CCO com revestimento de carboneto de cromo

58–65 HRC · Premium

Chapa bimetálica (CCO)

Revestimento de carboneto de cromo (Cr7C3) para abrasão por deslizamento extrema — calhas de finos, ciclones, dutos.

Material Dureza Impacto Abrasão Mecanismo dominante Aplicação recomendada
AR 400 370 – 430 HBW Impacto + abrasão Equipamentos gerais com impacto moderado
AR 450 420 – 475 HBW Impacto + abrasão (equilibrado) Britagem, mineração pesada, escavação
AR 500 470 – 530 HBW Abrasão severa Mineração, transporte, zonas de transferência
Bimetálica (CCO) 58 – 65 HRC Abrasão por deslizamento Finos abrasivos, calhas, dutos, ciclones

Overlay technology

Chromium carbide overlay (CCO)

A chromium carbide layer fusion-bonded to a mild-steel backing by submerged- or open-arc welding. The microstructure is primary Cr7C3 carbides in a eutectic austenite matrix: the hard carbides take the abrasion while the ductile plate absorbs impact and keeps the product weldable, formable and easy to install.

Standard CCO Plate

58–63 HRC · Cr7C3 > 35%

  • ·Outlasts quenched & tempered 400 BHN plate by 5–6× in high-abrasion service
  • ·Hardness evenly distributed through the overlay
  • ·Overlay thickness tolerance under 0.5 mm · flatness within ±3 mm/m
  • ·Cut, rolled, drilled, bolted or studded to your drawing
Solda
Mild-steel or low-hydrogen consumables, no preheat required
Corte
Plasma, cut from the backing-plate side for a clean edge

Smooth CCO — premium

60–64 HRC · Crack- and bead-free surface

  • ·Automatic welding process yields a practically crack- and weld-bead-free surface
  • ·Uniform chemistry and hardness through thickness — variation typically under 3 Rockwell points
  • ·1.5–4× the service life of conventional overlay plate
  • ·Smooth face means lower friction and far less build-up handling bulk material
  • ·ASTM G65-4 mass loss: M30 < 0.15 g · M70 < 0.11 g

M30 — regular wear duty, 59–64 HRC: excellent abrasion resistance with moderate impact tolerance.

M70 — W, Nb, Ti, V and Mo added to the overlay for compound carbides: the strongest abrasion e impact resistance of the range.

M10 — non-magnetic wear plate for strong magnetic environments: 5× the life of 304 stainless in magnetic separators and iron removers.

Standard chromium carbide overlay plate showing the characteristic ribbed weld-bead surface

Standard CCO

The as-welded overlay keeps its characteristic ribbed bead pattern — full abrasion resistance, at the lowest cost per square metre.

Smooth CCO plates stacked, showing the flat crack- and bead-free overlay surface

Smooth CCO

A flat, practically crack- and bead-free face: lower friction, less material build-up and 1.5–4× the service life.

Laminated wear blocks

700 HB / 63 HRC

High-chrome white iron metallurgically bonded to a mild-steel backing by a vacuum-welding process: extreme hardness on the working face, weldable and impact-tolerant behind it. Chocky bars, wear buttons, strips, wear plates and crusher hammer tips — standard shapes or custom sizes.

Onde se aplica

Shovel, loader and excavator bucket protection · chute liners and hopper wear plates · feeder deck plates · impact plates · rock-box bars and liners · crusher liners · truck-body liners · grizzly bars · dredge wear parts, suction mouth and cutter-head protection · hoppers, fans, screens, dampers, mixers and cyclones.

Indústrias atendidas

Mining · quarrying and aggregates · cement · iron and steel making · coke and coal · dredging · civil engineering · foundry · recycling.

Ficha técnica · PDF

CCO wear plate — grades, hardness, sizes & applications

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