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