Vacuum Gas Quenching Furnace

vacuum gas quenching furnace

High-Temperature Vacuum Gas Quenching Furnace

Brother vacuum gas quenching furnace is made up of furnace shell, graphite heating chamber, vacuum system, and cooling system. The heating chamber material is graphite felt. The furnace includes Vertical type and Horizontal type, blowing method include circular blowing and up-down blowing. This furnace can be equipped with a hot stirring fan for low temperature stirring (Optional: Stirring fan) and can be vented at any temperature (Optional: valve heat exchanger).

This furnace is widely used in aerospace/aviation, weapons, automobiles, electronics, machinery industry, and other fields, can be used for heating treatment of annealing, tempering, quenching, brazing, etc.

Vacuum gas quenching furnace video

Vacuum gas quenching furnace features

  • The heating chamber is composed of a graphite heater, graphite soft felt, and hard felt, the max temperature is 1320℃.
  • The multiserial graphite spray nozzle is located inside the heating chamber along with the induction inwall. The gas uniform was sprayed from the spray nozzle during gas quenching.
  • The material platform is composed of graphite support, hearth, and Al2O3 sticker. This structure will prevent the adhesion between the platform and hearth during high temperatures.
  • Gas cooling system: which is composed of a high-press wheel blower, multistage high-efficient copper heat exchanger, and duct deflector. Filling high purity N2 or Ar during gas cooling, spray to the workpiece through duct deflector to achieve workpiece uniform cooling.
  • The gas cooling pressure is adjustable from 1-10 bar.
    Max cooling rate: from 1200℃ to 300℃ less than 5min.

gas quenching furnace


Vacuum Gas Quenching Furnace Technical Specifications

Furnace structure Single chamber, horizontal
Furnace door closing mode Fast tighting by hinge and gear ring, pneumatic drving
Chamber size 450x300x300mm(L*W*H)
Max loading capacity 80kg (Including tooling)
Max temperature 1320 ℃  (less than 10 minutes)
Working temperature in vacuum 500-1250℃
Vacuum parameters ● Ultimate vacuum level 4×10-1Pa

● Working vacuum level 4Pa

● Pressure rise rate (Complete drying): ≤3Pa/h

● Pumping speed (To working vacuum): ≤20 min

● Partial pressure range: 10-800Pa

● Max inner pressure  (Absolute pressure): ≤6 bar

Cooling parameters ● Cooling speed (1200℃ to 300℃, 6bar, ≦700KG):5mins

● Air tube (18 pcs main,6 pcs small),material: seamless tube

● Heat exchanger:red copper, finned tube

● Heat exchanger water feeding pattern: back in, front out

Input voltage 380V 3P, 50Hz
Total power 125kVA
Rated heating power 80KW
Cooling fan power 45kW
Cooling water Temperature of cooling water inlet: 20-32℃

Preassure of cooling water: 0.2-0.3MPa

Total weight Approx 3 tons
Floor area Approx 20m3
Cooling gas N2/Ar, purity over 99.99%
Compressed air pressure 0.4-0.6MPa
Control system ● Temp control mode: Programmable auto single zone

temperature control

● Control mode: Full-automatic/Manual

● Cooling mode: air cooling/natural cooling

  • Other sizes can be customized.

Contact us for more details like:

  • Furnace Body
  • Vacuum System
  • Heating System
  • Cooling System
  • Auxiliary System
  • Control System

We can also make some special designs according to your requirements.


Vacuum gas quenching furnace standard model:

Model Chamber size(mm) Max.Temp
Ultimate vacuum
BR-QCL-334 300*300*450 1320 80 125 4×10^(-1)
BR-QCL-446 400*400*600 1320 200 145 4×10^(-1)
BR-QCL-557 500*500*700 1320 300 190 4×10^(-1)
BR-QCL-669 600*600*900 1320 500 282 4×10^(-1)


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