Top-and-Bottom Blast Vacuum Gas Quenching Furnace

2026-09-08 14:03

Traditional gas quenching furnaces utilizing duct-based airflow structures often suffer from issues such as uneven quenching, significant deformation, and insufficient quenching intensity due to their structural design and airflow patterns. SIMUWU’s top-and-bottom opposing-flow gas quenching furnace effectively eliminates these problems.

Compared to duct-based designs, this furnace employs symmetrically distributed high-pressure nozzles and a bidirectional opposing-flow (or periodic flow-reversal) configuration. These features offer superior cooling uniformity and minimal quenching deformation, while effectively achieving the critical cooling rates required for complex geometries and large-cross-section workpieces. Furthermore, the furnace’s exceptional temperature uniformity enables it to perform tempering operations as well.

Structural diagram of top-and-bottom blast vacuum gas quenching furnace showing opposing airflow nozzles for uniform cooling

The following are the specific technical specifications for the RVGQ-669 (6 bar) vacuum gas quenching furnace:

Furnace Type	Horizontal type,single chamber, internal recycle.
Loading method	Front Loading
Max. Loading size	600×600×900 (W×H×L mm)
Max. Loading weight	600 kg (including jig)
Power supply	3 phase, 380V(±5%); 50Hz
Total power	210kw
Heating power	180kw
Cooling fan motor power	160kw
Max.design temperature	1350℃
Working temperature	500-1300℃
Temperature uniformity	9 points temp testing ±5℃
Temperature control accuracy	S Type thermocouple ≤ ±1℃
Quantity of heating zones	1 zone
Heating element	High purity graphite
Heating rate(The room temperature of the empty furnace rises to 1200℃)	≤60min
Ultimate vacuum	6.7 x 10-3Pa
Working vacuum	6.7 x 10-2Pa
Pressure rising rate(cold empty furnace condition)	≤ 0.67 Pa/h
Cooling method	Gas cooling/natural cooling
Cooling air	Nitrogen or Argon (purity: 99.99% or 99.999%)
Cooling rate(empty furnace 1200℃~150℃)	≤ 6 min
Max charging pressure(absolute pressure)	≤ 6 bar (absolute pressure-adjustable)
Convection heating	Furnace door stirring fan
Temperature control mode	Intelligent programmable temperature controller for automatic temperature control
Control mode	PLC automatic / manual control interlock protection