Batch Gas Carburising

The Almor Batch Gas Carburising Furnace is based on the well proven Wild Barfield design. Over many years Wild Barfield has established a reputation for the supply of robust installations to meet a wide variety of gas carburising and neutral hardening needs for a diverse range of industries:

Design Features:

  • Vertical loading
  • Sealed nickel chromium retort
  • Gas carburising, carbo-nitriding, clean hardening and annealing
  • Maximum temperatures up to 1000ºC (Option 1150ºC)
  • Lid mounted fan and baffle for optimum atmosphere uniformity
  • Low thermal mass insulation
  • Excellent temperature uniformity (+/- 6ºC 600 – 1000ºC – electric version)
  • Endothermic gas, nitrogen / methanol or other gas mixes
  • Advanced process control systems for optimum control of carbon potential

Standard Designs

  • Electrically heated
  • Charge space – up to 1,575 mm deep – up to 915 mm diameter
Table of Standard Sizes
modeleffective diameter mmeffective depth mmrating kw (1)endogas flow m3/hrapproximate overall dimensions mm
GC1623400580441.52500W 2600L 2600H (2)
GC1632400815531.52500W 2600L 2750H (2)
GC2430610760673.02800W 2900L 2700H (2)
GC2438610760673.02800W 2900L 2850H (2)
GC24466101170903.02800W 2900L 3050H (2)
GC245461013701004.02800W 2900L 3250H (2)
GC36389159651004.03700W 3400L 3150H (2)
GC365491513701107.03700W 3400L 3550H (2)
GC366291515751507.53700W 3400L 3800H (2)

(1) The above data is for electrically heated fixed retort design. Standard models operate on 400V, 3-phase, 50 Hz supply. Other voltages/frequencies available to order.
(2) Not including height required to crane lifting hook, for work removal.

Custom Designs

  • Electrically heated or Gas heated (Energy saving, low NOx burners)
  • Charge space – up to 5,500 mm deep – up to 3,000 mm diameter
  • Charge mass – up to 20 tonne

Case Study 1

Industry: Mining

  • Application: Gas carburising and austempering of drill bits
  • Equipment: Two – Standard GC3654 furnace and salt quench tank
  • Atmosphere: Endothermic gas with controlled additions
  • Process control: Oxygen probe

Case Study 2

Industry: Aerospace

  • Application: De-carburisation free hardening and tempering
  • Equipment: Two GC72144 furnaces and oil quench tank
  • Three VFC72144 air recirculation furnaces for preheat and tempering
  • Charge space: 3,650 mm deep x 1,830 mm diameter
  • Atmosphere: Endothermic gas with controlled additions
  • Process control: Oxygen probe with 3 gas (CO,CO2,CH4) IR compensation

Case Study 3

Industry: Heavy duty gearing

  • Application: Deep case gas carburising and hardening of gears and shafts
  • Equipment: GC120120 furnace and oil quench tank
  • VFC120120 air circulation furnace for preheat and tempering
  • Charge space: 3,000 mm deep x 3,000 mm diameter
  • Atmosphere: Nitrogen/Methanol with controlled additions
  • Process control: Oxygen probe with 3 gas (CO,CO2,CH4) IR compensation

Case Study 4

Industry: Mining

  • Application: Gas carburising and hardening of drill shafts
  • Equipment: GC36216 furnace and oil quench tank
  • VAC36216 forced air cooling chamber
  • Charge space: 5,500 mm deep x 915 mm diameter
  • Atmosphere: Endothermic gas with controlled additions
  • Process control: Oxygen probe with 3 gas (CO,CO2,CH4) IR monitoring

Complete Solution

ALMOR can provide a complete turn key solution, including site installation, commissioning and training. Companion equipment includes tempering furnaces, cleaning plants, quench tanks and endogas generators.

After Sales Support

ALMOR provide complete after sales spares and service support. Spares include heating elements, nickel chrome retorts and work support systems.
Maintenance service contracts can be provided together with metallurgical/technical consultancy.