Chromium Carbide Overlay
Chromium Carbide Overlay
Chromium Carbide Overlay
Chromium Carbide Overlay

Chromium Carbide Overlay

Chromium Carbide Overlay Plate( 2-50mm Overlayer Thickness ) High Abrasion Low to Medium Impact Chromium Carbide Overlay Plate( 2-50mm Overlayer Thickness )
Cco Wear Plate Cco Wear Plate

Chromium Carbide Overlay Plates are the ideal solution for extreme wear and impact environments, combining hard, wear-resistant overlay with a tough steel base.
With a range of grades, overlay thicknesses, and plate sizes, CCO plates can be customized to meet the demands of mining, cement, power, and material handling industries.

Category:

Chromium Carbide Overlay (CCO) Plate is a type of wear-resistant bimetallic steel plate where a high-hardness chromium carbide layer is welded onto a mild steel base.
This combination provides:

  • Extreme abrasion resistance (hardness up to 58–65 HRC)

  • Impact toughness from the base steel

  • Long service life in mining, cement, power, and material handling applications

CCO plates are widely used in crusher liners, slurry chutes, screw conveyors, hoppers, and impact areas.

Common Chromium Carbide Overlay Grades

Grade / Type Overlay Hardness (HRC) Base Steel Overlay Thickness (mm) Applications
CCO-1 / 1.0 mm weld 58–60 HRC Q235 / mild steel 3–6 mm Light abrasion areas, chutes, hoppers
CCO-2 / 2.0 mm weld 60–62 HRC Q235 / S355 6–8 mm Crushers, feeders, conveyor liners
CCO-3 / 3.0 mm weld 62–64 HRC Q235 / NM400 8–12 mm High abrasion areas, impact + wear zones
CCO-4 / 4.0 mm weld 64–65 HRC NM400 / AR450 12–15 mm Severe wear zones, mining equipment, slurry pipelines
CCO-5 / 5.0 mm weld 65 HRC AR400 / AR450 15–20 mm Extreme wear applications, hammer plates, knife edges

Note: Hardness is measured on the overlay surface. The base steel provides toughness and weldability.

Typical Plate Specifications

Thickness (mm) Width (mm) Length (mm) Overlay Layer Thickness (mm) Notes
6–20 1000–2000 2000–6000 3–6 Light wear applications
8–25 1200–2000 2500–6000 6–10 Medium wear, impact + abrasion
10–30 1500–2200 3000–8000 8–12 High wear, moderate impact
12–40 1500–2500 4000–12000 12–20 Severe abrasion and impact
20–50 1800–2500 6000–12000 15–25 Extreme mining and crushing zones

Key Advantages of Chromium Carbide Overlay Plates

  1. High Hardness Surface – Protects equipment from severe sliding abrasion.

  2. Tough Base Steel – Absorbs impact and prevents cracking.

  3. Customizable Thickness – Overlay and base thickness can be tailored for specific wear conditions.

  4. Long Service Life – Up to 5–10× longer than ordinary wear plates.

  5. Versatile Applications – Mining, cement, power plants, recycling, and material handling equipment.

Industrial Applications

  • Mining: Crusher liners, hoppers, chutes, feeder plates

  • Cement & Concrete: Slurry pipelines, mixer liners, screw conveyors

  • Power Plants: Ash handling systems, coal chutes

  • Recycling Industry: Shredder blades, hammer plates, impact areas

  • Material Handling: Conveyor liners, transfer chutes, bins

Hardfacing steel refers to steel components that have been coated with a hard, wear-resistant layer through overlay welding. The hardfacing layer dramatically increases the abrasion, impact, and erosion resistance of industrial parts, extending service life in mining, cement, power, and material handling applications. ⚙️ Hardfacing Layer Structure A typical hardfaced steel component has two main layers: Overlay Layer (Hardfacing Layer) Made of high-alloy steel, chromium carbide, or cobalt-based alloys. Hardness: 50–65 HRC depending on the material. Function: Protects against sliding, impact, and erosive wear. Base Steel Layer Usually mild steel (Q235), AR/NM wear steel, or structural steel. Provides toughness, impact resistance, and structural support. 🔧 Hardfacing Welding Processes Several welding techniques are used to deposit the hardfacing layer: Process Description Advantages Submerged Arc Welding (SAW) Large-scale welding with chromium carbide or hardfacing wires High deposition rate, uniform layer thickness Flux-Cored Arc Welding (FCAW) Uses flux-cored wires with hard particles Flexible, suitable for medium and small parts Shielded Metal Arc Welding (SMAW) Manual welding with hardfacing rods Simple, ideal for repairs or field work Plasma Transferred Arc (PTA) High-energy plasma weld deposits powder overlay Very high hardness, minimal dilution, excellent wear resistance Key Considerations in Hardfacing Overlay Thickness Typically 3–20 mm depending on wear conditions. Multi-pass welding may be used to build up the desired thickness. Preheating & Interpass Temperature Thick steel components may require preheating (150–250°C) to prevent cracking. Interpass temperature control ensures uniform hardness and minimal residual stress. Dilution Control

Hardfacing steel refers to steel components that have been coated with a hard, wear-resistant layer through overlay welding. The hardfacing layer dramatically increases the abrasion, impact, and erosion resistance of industrial parts, extending service life in mining, cement, power, and material handling applications. ⚙️ Hardfacing Layer Structure A typical hardfaced steel component has two main layers: Overlay Layer (Hardfacing Layer) Made of high-alloy steel, chromium carbide, or cobalt-based alloys. Hardness: 50–65 HRC depending on the material. Function: Protects against sliding, impact, and erosive wear. Base Steel Layer Usually mild steel (Q235), AR/NM wear steel, or structural steel. Provides toughness, impact resistance, and structural support. 🔧 Hardfacing Welding Processes Several welding techniques are used to deposit the hardfacing layer: Process Description Advantages Submerged Arc Welding (SAW) Large-scale welding with chromium carbide or hardfacing wires High deposition rate, uniform layer thickness Flux-Cored Arc Welding (FCAW) Uses flux-cored wires with hard particles Flexible, suitable for medium and small parts Shielded Metal Arc Welding (SMAW) Manual welding with hardfacing rods Simple, ideal for repairs or field work Plasma Transferred Arc (PTA) High-energy plasma weld deposits powder overlay Very high hardness, minimal dilution, excellent wear resistance Key Considerations in Hardfacing Overlay Thickness Typically 3–20 mm depending on wear conditions. Multi-pass welding may be used to build up the desired thickness. Preheating & Interpass Temperature Thick steel components may require preheating (150–250°C) to prevent cracking. Interpass temperature control ensures uniform hardness and minimal residual stress. Dilution Control

Chromium Carbide Overlay

Hardfacing steel refers to steel components that have been coated with a hard, wear-resistant layer through overlay welding. The hardfacing layer dramatically increases the abrasion, impact, and erosion resistance of industrial parts, extending service life in mining, cement, power, and material handling applications. ⚙️ Hardfacing Layer Structure A typical hardfaced steel component has two main layers: Overlay Layer (Hardfacing Layer) Made of high-alloy steel, chromium carbide, or cobalt-based alloys. Hardness: 50–65 HRC depending on the material. Function: Protects against sliding, impact, and erosive wear. Base Steel Layer Usually mild steel (Q235), AR/NM wear steel, or structural steel. Provides toughness, impact resistance, and structural support. 🔧 Hardfacing Welding Processes Several welding techniques are used to deposit the hardfacing layer: Process Description Advantages Submerged Arc Welding (SAW) Large-scale welding with chromium carbide or hardfacing wires High deposition rate, uniform layer thickness Flux-Cored Arc Welding (FCAW) Uses flux-cored wires with hard particles Flexible, suitable for medium and small parts Shielded Metal Arc Welding (SMAW) Manual welding with hardfacing rods Simple, ideal for repairs or field work Plasma Transferred Arc (PTA) High-energy plasma weld deposits powder overlay Very high hardness, minimal dilution, excellent wear resistance Key Considerations in Hardfacing Overlay Thickness Typically 3–20 mm depending on wear conditions. Multi-pass welding may be used to build up the desired thickness. Preheating & Interpass Temperature Thick steel components may require preheating (150–250°C) to prevent cracking. Interpass temperature control ensures uniform hardness and minimal residual stress. Dilution Control

Hardfacing steel refers to steel components that have been coated with a hard, wear-resistant layer through overlay welding. The hardfacing layer dramatically increases the abrasion, impact, and erosion resistance of industrial parts, extending service life in mining, cement, power, and material handling applications. ⚙️ Hardfacing Layer Structure A typical hardfaced steel component has two main layers: Overlay Layer (Hardfacing Layer) Made of high-alloy steel, chromium carbide, or cobalt-based alloys. Hardness: 50–65 HRC depending on the material. Function: Protects against sliding, impact, and erosive wear. Base Steel Layer Usually mild steel (Q235), AR/NM wear steel, or structural steel. Provides toughness, impact resistance, and structural support. 🔧 Hardfacing Welding Processes Several welding techniques are used to deposit the hardfacing layer: Process Description Advantages Submerged Arc Welding (SAW) Large-scale welding with chromium carbide or hardfacing wires High deposition rate, uniform layer thickness Flux-Cored Arc Welding (FCAW) Uses flux-cored wires with hard particles Flexible, suitable for medium and small parts Shielded Metal Arc Welding (SMAW) Manual welding with hardfacing rods Simple, ideal for repairs or field work Plasma Transferred Arc (PTA) High-energy plasma weld deposits powder overlay Very high hardness, minimal dilution, excellent wear resistance Key Considerations in Hardfacing Overlay Thickness Typically 3–20 mm depending on wear conditions. Multi-pass welding may be used to build up the desired thickness. Preheating & Interpass Temperature Thick steel components may require preheating (150–250°C) to prevent cracking. Interpass temperature control ensures uniform hardness and minimal residual stress. Dilution Control