Spark plasma sintering systems „FAST“ technology
Type HP D - directly heated
Description
In this sintering process, the tool or component is heated in a direct current passage, alowing cycle times of a few minutes are possible. The use of direct current pulses results in an additional increase in sintering activity for many materials due to the processes that take place at the contact points of the powder particles (Joule heating, plasma formation, electromigration, etc.), so that significantly lower temperatures and/or pressures are required than for conventional hot pressing or sintering.
Nanomaterials can be sintered without significant grain growth
- FGM ("Functionally Graded Materials")
- Composite materials
- Innovative hard metals
- Aluminum and copper alloys and intermetallic compounds
- Structural and functional ceramics
Functions
- Displacement (compaction path) and densification rate
- Temperature measurement and control optionally via axial/radial pyrometers and/or flexible TCs
- Freely programmable sintering parameters with up to 100 segments per recipe
- Pulse on/off variably programmable (1...999 ms) for each segment separately
- Heating rates of up to 1000 K/min (depending on tool size and material)
- Comprehensive software for data recording and evaluation of all sintering parameters
- User-friendly process management system available online (remote control)
- Semi-continuous systems available for industrial applications
Main specifications
- Working temperature up to 2200 °C
- Vacuum: 5x 10-2 mbar(a)
- Furnace atmosphere: Ar / N2 / He / H2 (3 %)
- Servo-hydraulic force control
- Precise, rigid press frame with low deformation and accurate plunger guidance
- Easy accessibility
- Double-walled, water-cooled stainless steel vacuum chamber
- Handling systems, especially for large-format systems
- Comprehensive, user-friendly control system
- Siemens S7 and WinCC
- Stange SE and ECS 2000
Options
- Working temperature up to 2500 °C
- in air up to max. 1400 °C
- additional furnace atmosphere
- Infront mounted glove box for loading/unloading air sensitive materials in an inert gas atmosphere
- Rapid cooling systems
- Multi-chamber cooling systems
- automatic operation
- Overpressure up to 1 MPa
- Debinding / dewaxing
- Cooling water supply by chiller or heat exchanger units
- Customised machine sizes and features
HP D Standardtypes |
Dimensions Component [mm] |
Max. Pressing force [kN] |
Max. Voltage [V] |
Max. Current [A] |
Max. Heating power [kW] |
---|---|---|---|---|---|
HP D 10 | Ø 50 | 100 | 7,2 | 5500 | 37 |
HP D 25 | Ø 80 | 250 | 8 | 8000 | 60 |
HP D 60 | Ø 120 | 600 | 8 | 16000 | 120 |
HP D 125 | Ø 150 | 1250 | 8 | 24000 | 180 |
HP D 250 | Ø 300 | 2500 | 8/16 | 48000/24000 | 360 |
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