Post on 29-Sep-2020
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POT FURNACE POT FURNACE POT FURNACE --- PIT FURNACEPIT FURNACEPIT FURNACE
FORFORFOR HEATHEATHEAT TREATMENTTREATMENTTREATMENT
UNDERUNDERUNDER ATMOSPHEREATMOSPHEREATMOSPHERE
Hardening
Carburizing
Carbonitriding
Quenching
(in oil/ water/ salt)
Tempering
Brazing
Nitriding
Nitrocarburizing
Oxynitriding
SYSTEM 230
SWITZERLAND INDUSTRIAL FURNACES
SA
70 90 150 200 120
Type 70/100 70/150 90/100 90/150 90/200 120/150 120/200 120/250 120/300 150/200 150/250 200/250 200/300
Maximum load weight [kg] 800 1200 1000 1600 2000 2500 3000 3500 4500 4000 5000 10000 12000
Useful diameter [mm] 700 700 900 900 900 1200 1200 1200 1200 1500 1500 2000 2000
Useful height [mm] 1000 1500 1000 1500 2000 1500 2000 2500 3000 2000 2500 2500 3000
Volume of load [dm3] 385 577 636 954 1272 1696 2262 2827 3393 3534 4418 7854 9425
Max temperature pot furnace [°C] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1100 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Max temperature pit furnace [°C] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1000 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Technical data
INDUSTRIAL FURNACES SWITZERLANDINDUSTRIAL FURNACES SWITZERLANDINDUSTRIAL FURNACES SWITZERLAND
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Functioning
Loading
Parts can be either suspended on a loading support or either placed in fixtures/ baskets. Handling
Loading occurs either with a crane or transfer bell, which can be seen on the photo on the left.
After the treatment cycle in the furnace, the load can also be transferred to the quench tank either by crane or transfer bell.
Advantages of our transfer bell
Automatic transfer to all stations within your line Quenching cycle is entirely automatic
Improvements in the working conditions: No human intervention in hot working zones No radiation of the load when it is transferred in workshop Eliminates risk of accident while handling
No sign of flames or fumes during oil quenching operation contained in the fume extraction system and filtration
Conception
Pit furnace is equipped with the following elements :
Light insulation
System of heating either by electric or gas
Cylinderic metallic retort installed within the furnace
Moveable plug with motorised opening and closing devi-
ce, supplied with convection fan and gas feeding injector.
The load is supported on a inferior plug , that avoids ten-sile stress of the retort and perfectly adapted for a useful
load weight of several tonnes
POT FURNACE
For heat treatment under atmosphere with cooling under protective gas
PIT FURNACE
For heat treatment under atmosphere with quenching in liquid or gas
SWITZERLAND INDUSTRIAL FURNACES
Conception
There are 2 different models of pot furnace:
a) Pot without convection fan of atmosphere, temperature max. 1100°C
This pot is suitable for heat treatment when it is not necessary to have high temperature precision such as bright annelaing of mechanic parts, wire or band coils.
b) Pot with convection fan of atmosphere,
temperature max. 1000°
This pot is fitted with a turbine and system of gas gui-ding, which assures an efficient convection of the at-
mosphere
We obtain an excellent heat transfer and reliable ther-mochemical homogeneity of the complete load. These conditions are necessary for treatments such as carbu-rizing and nitriding.
Functioning
Loading
Parts can be either suspended on a loading support or either placed in fixtures/ baskets, which are loaded in the pot.
Handling
After loading the parts in the pot, this unit is closed and purged under vacuum or neutral gas. This chamber is filled with gases to achieve suit-bale working parameters.
Pot is then loaded in a hot or cold furnace. When the treatment cycle is completed, there are 2 ways to proceed: a) Pot is cooled in the furnace with the help of a cooling fan b) Pot is transferred to a specific cooling station
Transfer crane
Furnace Cooling station
Isolated transfer bell
Furnace
Quench tank