Mahler
1. PM INDUSTRIE
* Continuous furnaces
- Conveyor belt sintering furnaces
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Characteristics |
- Working temperature up to 1150 °C
- Ceramic muffle in sintering zone
- Electrically heated or gas heated
- Operated with endogas and/or N2/H2 mixture
- Rapid dewaxing zone or dewaxing zone with muffle
- System extensions
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Standard dimensions of sintering zone. Subject to technical alterations.
Belt width
(mm) |
length sintering zone
(mm) |
throughput capacity
(Netto Kg/h) |
furnace length
(m) |
300 |
3000 |
130 |
17 |
300 |
3750 |
160 |
18 |
300 |
4500 |
190 |
19 |
300 |
5250 |
220 |
20 |
450 |
4500 |
290 |
19 |
450 |
5250 |
330 |
20 |
600 |
5250 |
450 |
20 |
600 |
6000 |
520 |
21 |
600 |
7000 |
600 |
22 |
600 |
8000 |
700 |
23 |
1000 |
6000 |
830 |
21 |
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- Separate furnace or a downstream tempering module
- Working temperatures up to 650 °C
- Electrically heated or gas heated
- Operated with protective gas or air
- With or without muffle
- With or without recirculation
- Cooling possible (to be used as cooling zone)
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Picture: tempering module to temper PM components after hardening in a furnace cycle
- Aluminium sintering furnace
Characteristics
- Most accurate temperatures due to special distribution of temperature and protective atmosphere
- Dew point below -50 °C
- Various belt widths possible, e.g. 600 mm
- Long term production proved
- Heat treatment according to T1, T4 and T6
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- High temperature sintering furnace Roller Hearth furnace
Temperatures 1200 °C – 1300 °C
100% Hydrogen or hydrogen/nitrogen mixtures
Advantages:
- Continuous with mesh belt
- Direct gas heated
- Oxide layer larger 4 microns
- High capacity
- Low energy consumption
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You only need:
- Fuel gas for heating
- Softened water for integrated steam generation
- Electric current for driving unit and atmosphere cirulation
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2. Brazing, annealing and gas-hardening furnaces
- Stainless steel applications
Characteristics
- Horizontal or humpback design
- Transport device with conveyor belt
- Heating - electric or with fuel gas
- Muffle in hot zone
- Protective gas: hydrogen and nitrogen atmosphere zoning
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Continuous furnaces with protective gas atmosphere for heat treatment of machine components made of easily oxidised carbonised steel alloys (stainless steel, tool steel) and copper alloys (brass etc).
- Computer controlled and continuous documentation of the furnace parameters
- Automatic regulation and/or monitoring of the furnace atmosphere
- Automatic adjustment of the height of the loading and unloading doors in accordance with the height of the components
- Adaptation of the quantity of the protective gas (MAHLER patent)
- Gas quench device after the heating zone
- Convective cooling zone
- Automatic control of the gas flow
- Cooling water re-cooling system
Characteristics
- Transport device with conveyor belt or roller hearth
- Electric or with fuel gas
- No muffle in hot zone
- Protective gas provided through partial combustion of a fuel gas (natural gas, propane, LPG) or a nitrogen/hydrogen mixture inside the furnace. Requires no separate protective gas generator from 850 °C upwards!
- Saves energy through generation of protective gas inside the furnace
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With protective atmosphere for heat treatment of machine components made of easily reducible steel and copper alloys.
- ACCESSORIES
- Computer control and continuous documentation of the furnace parameter
- Automatic regulation and/or monitoring of the furnace atmosphere
- Automatic adjustment of the loading and unloading doors according to height of parts
- Adaptation of quantity of protective gas (MAHLER patent)
- Gas quench device after heating zone
- Convective cooling zone
- Automatic regulation of gas flow
- Cooling water re-cooling system
- Gas hardening furnaces
For the manufacture of drills furnaces with gas quench are used. The drills are brazed and hardened in one furnace cycle at approx. 1120 °C. The protective atmosphere is a nitrogen/hydrogen mix.
