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FHH series

Vacuum Furnace

Horizontal Type Vacuum Heat Treatment Furnace
FHH series

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FHH-60GH

FHH series are used for various purposes such as quenching, tempering, sintering and brazing of various metals. Chamber configuration can be multiplied up to 3 chambers by adopting fork carry system.

Features

  • Maximum temperature1350ºC,Operation temperature800 to 1150ºC
  • Temperature uniformity is within ± 5ºC at 1150ºC
  • Keeping the heating chamber in vacuum for high quality and repeatability of products.
  • Carrier gas system is implemented to minimize metal evaporation.
  • At cooling process, heating chamber is not cooled so that power consumption can be saved.
  • The heating chamber is kept in vacuum to prevent from oxidizing so that lifetime for internal parts of the heating chamber can be longer.
  • Water-cooling jacket construction contributes clean work environment.

Applications

  • Quenching, Tempering : Various machine parts, Dies.
  • Sintering : Superhard tools, Magnet.
  • Brazing : Heat exchanger, machine parts.

Specifications

System / Type 45 60 75 90 120 Remarks
P
e
r
f
o
r
m
a
n
c
e
Size Uniform hot zone 〔㎜〕 Width 450 600 750 900 1200  
Length 675 900 1125 1350 1800  
Height 300 400 500 600 800  
Loading capacity 〔㎏〕 200 400 650 1000 2000 including tray's weight
Temperature Max. temperature 1350ºC  
Operation temperature 800 to 1150ºC  
Temperature uniformity 1150ºC ± 5ºC Five points measure ment at no load
Cooling Gas cooling 93 kPa (700 Torr) 30minutes or less from 1150ºC to 150ºC when standard specimen is charged.
190 kPa (1.9㎏/ cm2 G) 20 minutes or less
Handling time to oil quenching pit 12sec 15sec 20sec  
Vacuum Ultimate vacuum 10-1Pa(10-3Torr) order. *High vacuum 10-3Pa (10-5 Torr) order is option. At degassed and empty conditions
Operating pressure 133 to13Pa (1〜10-1Torr)  
Pump-down time 10minutes or less 15minutes or less from the atmosphere to 6.5Pa (5×10-2 Torr) at no load
Leak rate 〔Pa・m3 /S〕 3 × 10-4 4 × 10-4 4 × 10 -4 5 × 10 -4 by pressure rise method
U
t
i
l
i
t
y
Power require -ment 〔kVA〕 GH* 65 101 161 209 303 AC 200/220V (90& 120 type, 400/440V) 50/60Hz 3φ
G/L.H* 73 110 187 244 354
PHG* 70 109 175 228 333
GHL* 85 130 223 300 429 (Primary power requirement)
Cooling water require ment 〔kVA〕 GH* 3 5 7 9 16 Pressure 2.5/cm2G (250KPa) Temper ature 30ºC or less ※25ºC or less : Oil diffusion pump type
G/L.H* 3 4 5 7 11
PHG* 4 5 8 11 18
GHL* 4 6 9 11 18
Compressed air require ment 〔Nm3 /min〕 Some 7㎏/ cm2G (700 KPa)
Carrier gas require ment 〔L/min〕 1.5 2 3 4.5 6 N2 gas (N.T.P)
Cooling gas require ment 〔m3/times〕 2.7 4.5 6 10 18 N2 gas (N.T.P)
Quenching oil require ment 〔m3 1.8 3.6 6 9  
Quenching oil heater 〔kW〕 15 24 48 72  
Floor space require ment 〔m2 2chamber type 3.4× 5.7 3.9× 7.4 4.6× 8.7 5.5× 9 7× 12.5 W×L
3chamber type 3.4× 8.1 3.7× 9.4 4.6× 10.6 5.5× 12 7× 17
Gtype PHG 3.5× 0.5 3.9× 0.5 5× 0.5 5.5× 0.5 6.5× 0.5 H×D
Ltype GHL 3.5× 1.0 4× 1.4 5× 1.5 5.5× 1.8 6.5× 2.4

* Chamber used:P=Preparation(loading/unloading)Chamber,H=Heating Chamber, G=Gas Cooling Chamber,L=Oil Cooling Chamber

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