New Vacuum Furnaces

Coidan Graphite Products represent Seco Warwick for their range of Vacuum and Atmosphere furnaces in the UK, Seco Warwick are one of the largest furnace manufacturers in Europe and are sure to have the type of furnace you require within their product range - see

Seco Warwick in conjunction with Coidan Graphite Products offers vacuum heat treating furnaces for hardening, tempering, annealing, solution heat treating, brazing, sintering, carburizing, carbonitriding, high vacuum, CVD-graphitizing and degassing.  SECO/WARWICK has built some of the largest and technically advanced vacuum furnaces in operation today, developing advanced technologies like Universal HPQTM (High Pressure Quench), PreNit® & FineCarb® LPC vacuum carburizing, fully automated control systems and modeling software. Vacuum furnace configurations are available for vertical, horizontal and elevator style furnaces. Both cylindrical and rectangular hot zones with metallic or graphite heating elements are available. If your budget is not up to a new furnace Coidan Graphite Products have a stock of used and refurbished vacuum furnaces which may meet your needs.

New Vacuum Furnace Characteristics Enquiry Form 

Used Vacuum Furnace 

 Vacuum Furnace Processes and Designs


  • Hardening
  • Brazing
  • Carburizing
  • Annealing
  • Tempering
  • Solution HT
  • Sintering
  • CVD
  • Graphitizing
  • Degassing


  • Horizontal
  • Vertical
  • Elevator
  • Cold Wall
  • Hot Wall
  • Single, Double or

Hot Zone Elements

  • Graphite
  • Molybdenum
  • Stainless
  • Tantalum
  • Nickel Chrome
  • Tungsten

Cooling Options

  • Vacuum
  • Atmosphere
  • Recirculated Atmos.
  • Oil quench
  • Gas quench
  • Pressure Quench (HPQ)



VPT-VP-VVP Universal Furnaces

VPT-VP-VVP Universal FurnacesVacuum heat treatment furnaces with fast quench options and high energy efficiency

Technical Information

  • Furnaces with horizontal (VP/VPT) and vertical (VVPEH) loading configurations
  • Load from 50 to 5,000 kg
  • Graphite and screen insulation with maximum vacuum of 10-2 / 10-5 / 10-6 mbar
  • Quenching pressure 2, 6, 10, 12, 16 and 25 bar
  • Quenching gases N2, Ar, He and H2
  • More than 250 installations in the past 5 years
  • Best solutions for industry
  • Best operational features, including uniform heating and quenching and
    ability to harden a wide range of materials and cross-sections
  • Radial-type standard dynamic quenching (3600 seconds)
  • As required for programming directional cooling, option to build a radial/axial
    system in one furnace
  • Programming solutions for zone quenching
  • Rotary hearth in VVP(EH) vertical furnaces conducive to uniformity of quenching
  • Isothermal hardening suitable for hardening of tools and hardening after
    FineCarb® vacuum carburising
  • VPT (HPGQ) furnaces best for the technology of hardening forms and matrices
    under NADCA procedures and GM DC9999-1 and Ford AMTD –DC2010 norms
  • Unique construction of heating chamber assures excellent stability and equipment life
  • Integrated Power Control System installed in VPT furnaces (high power factor)
  • Vacuum-pressure door with long-lasting seal and automatic rapid closure
  • ConFlapTM system supporting convection heating
  • Optional equipment for vacuum carburising technology – FineCarb® / PreNit® LPC
  • User-friendly SimVac computer control system, enabling NADCAP procedures
  • Conforms to CE and NFPA
  • Compact installation reduces space requirements
  • Comprehensive delivery including cooling water circulation, gas installation,
    instrumentation etc.

VPT-VP-VVP Universal Furnaces 2


Special Furnaces and Technologies

Special Furnaces and TechnologiesSingle Chamber, continuous process and modular furnaces for heat treatment, brazing or sintering

Technical Information

  • Up to 10-7 mbar
  • 50 – 5,000 kg
  • Maximum 2300°C
  • Special Oil Quench / Special HPGQ
  • Single-chamber furnaces, continuous-process furnaces, and modular furnaces
  • Various applications, including for heat treatment, brazing and sintering




FineCarb® Vacuum Carburizing and Multichamber Furnaces

FineCarb Vacuum CarburizingVacuum carburizing and nitriding in an energy efficient and environmentally friendly fashion

Technical Information

  • Seco/Warwick 2-, 3-, 4- or 5-cell Rotary Modular System
  • Dual-chamber Oil Quench furnaces
  • Dual-chamber HPGQ 20 bar furnaces
  • Horizontal- and vertical-loading furnaces
  • Equipped with LPC FineCarb® carburising technology and PreNit® pre-nitriding to restrict grain development
  • Loads up to 1,200 kg
  • Range for mass production of drive systems
  • Uniform heating and cooling
  • Nozzle quenching system, zone quenching
  • Minimizing hardening distortions also with a gradual cooling system
  • Computer control system
  • Complies with CE and NFPA
  • Environment-friendly

FineCarb Vacuum Carburizing


Vacuum Sintering Furnaces

Vacuum Sintering FurnacesVacuum sintering with high pressure quench and/ or Hot Isostatic Pressing for metals and ceramics

Technical Information

  • Horizontal- and vertical-loading furnaces
  • Load from 100 to 2,500 kg
  • Quenching or process gas pressure of 2, 20, 60 or 100 bar
  • Maximum temperature of 1350, 1600 or 2200°C
  • Furnaces equipped with state-of-the-art control system enabling
    technological norms procedures
  • Furnaces for specific tasks according to customer specifications 


Designed for:

  • sintering of tungsten carbides (at a bonding pressure of 60 or 100 bar)
  • production of tools using the powder metallurgy technology
  • production of parts from stainless steel powders, including
    metal injection molding
  • production of Alnico alloys and magnetic materials, production of
    magnets and high-alloy materials for the aviation industry
  • production of ceramic elements
  • annealing and degassing of metal powders

Vacuum Sintering Furnaces 2


Retort Tempering Furnaces – ZeroFlow® Nitriding

Retort Tempering Furnaces – ZeroFlow NitridingVacuum furnaces for tempering and zero flow nitriding – cost effective nitriding with low emmissions

Technical Information

  • Horizontal- and vertical-loading furnaces
  • Load from 200 to 2,500 kg
  • Electric or gas heating (E/G)
  • 150 – 1500°C
  • 20 years of experience from Seco/Warwick
    and Camlaw
  • Short heating and quenching cycles
  • Quenching system with internal retort quenching and/or external quenching
  • Profiled thin-walled retort, reducing heating and cooling costs
  • Automatic closure of vacuum/high pressure door
  • Optional ZeroFlow® gas nitriding
  • Computer control system
  • Complies with CE and NFPA
  • Compact construction with small installation area


Gas Turbine Coating System

Gas Turbine Coating SystemCoating of the heat-resistant elements of gas turbines

Technical Information

  • Pack Coating
  • Vapor Phase Aluminizing (VPA)
  • Vapor Phase Chromizing (VPC)
  • Chemical Vapor Deposition (CVD)
  • FIC Furnace System
  • Coating Furnace System
    • Electrically heated furnaces
    • Reaction chamber – retort
    • Vacuum system – hydrogen and argon
      delivery system
    • Halide gas for CVD
    • Gaseous HF delivery system for FIC
    • Fume neutralization system (scrubber or bubbler)
    • Fixtured parts or coating box(es)
    • Gas cabinets and delivery systems with small installation area


Seco Warwick



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Coidan Graphite Products Ltd, Kirk Hammerton, York. YO26 8DQ | 01423 330492 | |