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Gas Carburising Furnace (GCF)

Continental Furnaces’ Gas Carburizing Furnace (GCF) provides precise carbon enrichment of steel component surfaces, creating a hard, wear-resistant case while maintaining a tough, ductile core. This furnace features advanced atmosphere control for consistent carburizing results and optimal case depth uniformity.

Key Features

  • Controlled Atmosphere Chamber: Precise carbon potential management

  • Endothermic Gas Generation: On-site atmosphere production

  • Multi-Zone Temperature Control: Uniform heating throughout chamber

  • Integrated Oil Quench Tank: Complete heat treatment cycle

  • Carbon Potential Monitoring: Real-time atmosphere analysis

  • Sealed Retort Design: Minimal atmosphere leakage

Technical Specifications

  • Design Type: Sealed chamber with controlled atmosphere

  • Heating Method: Gas-fired or electric heating elements

  • Temperature Range: 850°C to 950°C (carburizing temperature)

  • Atmosphere: Endothermic gas + enriching gas (propane/methane)

  • Carbon Potential Control: 0.6% to 1.2% surface carbon

  • Case Depth Range: 0.3 mm to 3.0 mm (customizable)

  • Quench Medium: Oil (fast or medium speed oils)

  • Control System: Advanced PLC with recipe management

Advantages

  • Precise Case Depth Control: Consistent results batch after batch

  • Excellent Surface Quality: Minimal oxidation and scaling

  • Uniform Carburizing: Even carbon penetration across all surfaces

  • Reduced Distortion: Controlled heating and quenching

  • Energy Efficient: Optimized atmosphere consumption

  • Repeatable Results: Recipe-driven process control

Carburizing Process Stages

  1. Loading: Component placement on fixtures

  2. Heating: Temperature ramp to carburizing range

  3. Carburizing: Carbon diffusion at controlled potential

  4. Diffusion: Carbon penetration into core (optional)

  5. Quenching: Rapid cooling for hardness development

  6. Tempering: Stress relief and toughness enhancement

Applications

  • Automotive Gears: Transmission and differential gears

  • Bearing Components: Races, cages, and rolling elements

  • Camshafts: Engine timing components

  • Crankshafts: Heavy-duty engine components

  • Fasteners: High-strength bolts and screws

  • Chain Links: Industrial and drive chains

  • Splines and Shafts: Power transmission components

Industries Served

  • Automotive manufacturing

  • Agricultural equipment

  • Construction machinery

  • Aerospace components

  • Oil and gas equipment

  • Industrial gearbox manufacturing

  • Power transmission

Carburizing Methods Available

  • Gas Carburizing: Hydrocarbon gas enrichment

  • Carbonitriding: Carbon and nitrogen diffusion

  • Boost-Diffuse Carburizing: Optimized cycle for efficiency

  • Vacuum Carburizing: High-pressure gas quench (optional)

Atmosphere System Components

  • Endothermic Gas Generator: Base atmosphere production

  • Enriching Gas Supply: Propane or natural gas addition

  • Carbon Potential Analyzer: Oxygen probe monitoring

  • Flow Control System: Precise gas metering

  • Circulation Fans: Uniform atmosphere distribution

Quench System Design

  • Oil Quench Tank: Integrated or separate design

  • Agitation System: Uniform cooling rates

  • Oil Cooling: Temperature maintenance system

  • Fume Extraction: Safe vapor removal

  • Fire Protection: Automatic suppression system

Material Compatibility

  • Low Carbon Steels: SAE 1010, 1020, 1022

  • Low Alloy Steels: SAE 4120, 8620, 4320

  • Specialty Alloys: Custom carburizing grades

Case Depth and Hardness Targets

  • Effective Case Depth: Typically 0.5-2.0 mm

  • Total Case Depth: Up to 3.0 mm or more

  • Surface Hardness: 58-63 HRC typical

  • Core Hardness: 30-45 HRC depending on alloy

Process Control Features

  • Recipe storage for multiple part types

  • Real-time carbon potential monitoring

  • Temperature uniformity surveys

  • Atmosphere composition analysis

  • Data logging and traceability

  • Automatic cycle progression

Energy and Operational Efficiency

  • Recuperative burner systems

  • Insulated chamber design

  • Optimized atmosphere consumption

  • Quick heating cycles

  • Minimal downtime between batches

Safety and Environmental Compliance

  • Sealed chamber design prevents emissions

  • Automatic atmosphere monitoring

  • Emergency cooling systems

  • Quench tank fire suppression

  • Operator safety interlocks

  • Environmental compliance features

Furnace Configurations

  1. Batch Integral Quench Furnace: Single chamber with oil quench

  2. Continuous Pusher Furnace: High-volume production

  3. Pit Type Carburizing Furnace: Vertical design for long parts

  4. Multi-Chamber System: Separate heating and quenching

Quality Assurance

  • Metallographic case depth verification

  • Hardness testing at multiple depths

  • Microstructure evaluation

  • Distortion measurement

  • Process validation protocols

Why Choose Continental Furnaces?

Continental Furnaces’ Gas Carburizing Furnaces deliver precise, repeatable results backed by advanced atmosphere control technology. Our ISO 9001:2015 certified manufacturing ensures quality, while our experienced team provides comprehensive support from design through commissioning.

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