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Traditional bulk heat treatments such as hardening or normalizing involve heating the components in air or salt baths until fully austenitic and quenching them in water or oil followed by several tempering cycles in air to obtain the desired structure.
These processes suffer from distortion and oxidation and generate heavy pollution. Modern technology demands a cleaner environment, greater dimensional stability and no oxidation of the treated components. The state of the art front loading high vacuum heat treatment furnace installed at Surface Engineering Limited satisfies all of these requirements.
| Main features of plant: |
- Useful working space:- 450 x 350 x 700mm
- Ultimate vacuum:- 10-6 mbar
- Uniform heating and cooling
- Cooling with nitrogen at 5 bar maximum pressure
- Maximum operating temperature:- 1350°C
- Temperature control within ± 5°C
- Minimum heat losses to surroundings
- Fully programmable controls that allow the heat treatment of practically all engineering metals
- Programmable multi-directional gas flow
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| Advantages of Vacuum heat treatment: |
- No contamination or oxidation of treated components or tools
- Treated surfaces have an excellent finish
- Dimensional stability and low induced stresses in treated parts due to uniform heating and cooling
- Treated surfaces have no decarburising or carbonised outer layers and are free from hydrogen embrittlement
- Safe and environmentally friendly process
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| Applications: |
- Hardening
- Homogenising and solution treatment
- Bright-annealing, stress relieving and ageing
- Precipitation Hardening of non-ferritic alloys
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| Hardening of: |
- High speed steels
- Cold and Hot working steels
- Martensitic stainless steels
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| Homogenising and solution treatment of: |
- Precipitation hardcnable steels
- Superalloys
- Stainless steels
- Aluminium alloys
- Magnesium alloys
- Copper alloys
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| Bright-annealing, stress Relieving and ageing of: |
- Maraging steels
- Copper alloys
- Nickel based alloys
- Miscellaneous non-ferrous alloys
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