Piastre in carburo di cromo

Piastre in carburo di cromo (noto anche come Chromium Carbide Overlay Plates O Piatti CCO) Sono piastre d'acciaio resistenti all'usura made by welding a hard chromium carbide layer onto a mild steel or stainless steel base. The resulting composite plate combines the strength and toughness of the base metal with the superior hardness and wear resistance of chromium carbide.

These plates are widely used in industries that require long-lasting protection against abrasione, impatto, e usura ad alta temperatura.

1. Structure and Composition

Chromium carbide plates are typically produced by saldatura ad arco sommerso O saldatura ad arco aperto, forming a metallurgical bond between the wear layer and the base plate.

Typical composition of wear layer (wt.%):

• Cromo (Cr): 25–35%

• Carbonio (C): 4–6%

• Ferro (Fe): Bilancia

• Elementi minori: Mn, E, N.B, Mo (opzionale, depending on grade)

The surface contains a dense network of Cr₇C₃-type carbides, giving it extremely high hardness and wear resistance.

Durezza: 58–65HRC (≈ 600–750 HV)

2. Standard Specifications and Sizes

Chromium carbide plates can be supplied in different base plate grades, spessori di sovrapposizione, E dimensioni according to usage.

Taglio, flessione, perforazione, and fabrication can be done with taglio al plasma O waterjet processes.

3. Product Grades and Types

Chromium carbide plates can be divided into several grades based on carbon and chromium content O processo di saldatura:

4. Principali applicazioni

Chromium carbide plates are designed for medium to severe wear environments and can extend equipment life 3–5 volte compared with traditional steel.

Common application fields:

• Estrazione mineraria ed estrattiva: cade, tramogge, frantoi, e schermi

• Industria del cemento: clinker conveyors, separator blades, cicloni

• Centrali elettriche: coal mills, ash pipelines, pale del ventilatore, fodere

• Acciaierie: sinter plant liners, scivoli di trasferimento, mixing drums

• Agriculture & costruzione: lame del bulldozer, benne caricatrici, indossare fodere

• Petrochemical & port industries: material handling and transport chutes

5. Advantages of Chromium Carbide Plates

• Elevata resistenza all'usura: Up to 5–10 times longer life than mild steel.

• Good Heat Resistance: Stable performance up to 800 °C.

• Excellent Weldability: Base plate can be easily welded or fabricated.

• Cost-Effective: Reduced downtime and maintenance frequency.

• Customizable: Plate size, spessore, and surface pattern can be tailored.

6. Typical Surface Patterns

To enhance material flow or reduce sticking, surface layers can be made smooth or patterned:

• Smooth surface (2+2, 3+3 type): For sliding wear.

• Ripple surface: For better impact resistance.

• Cross pattern (hardfacing weave): For heavy wear and slurry applications.

7. Riepilogo

Piastre in carburo di cromo offer a durable and economical solution for protecting industrial equipment against abrasive and erosive wear.