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Description

Hot pressing is a shaping process for compacting/sintering of powders or powder compacts using temperature and pressure.
The consolidation of mainly composite materials or technical ceramics usually takes place in graphite molds using temperature (resistance heating) up to 2400 °C and uniaxial pressing force up to 50 MPa in a vacuum or inert gas atmosphere.

Functions

Hot pressing in vacuum, relative pressure
Sintering in vacuum, relative pressure
High flexibility in process optimization and design
Extensive data evaluation
Product development, prototype production, series production
Measurement of compression path and speed
Force- or speed-controlled processes
Design and optimization of pressing tools/concepts
Loading and unloading systems

Main specification

Working temperature up to 2200°C
Vacuum: 5x10^-² mbar(a)
Furnace atmosphere: Ar / N₂
Servo-hydraulic force control
Precise, rigid press frame with low deformation, exact guidance of the press plungers

Easy accessibility
Resistance heating
Double-walled, water-cooled stainless steel vacuum container
Handling systems, especially for large-format systems
Comprehensive user-friendly control system Siemens S7 and WinCC

Options

Working temperature up to 2400°C
in air max. 1400°C
further furnace atmosphere
Induction heating
rapid cooling systems

overpressure up to 1 MPa
debinding / dewaxing
Multi-zone heating
Special sizes and functions

Types standard HP W

HP W Standardtypes	Ø Heating conductor [mm]	Height Heating conductor [mm]	Max. Pressing force [kN]	Max. Pressing diameter [mm]	Max. Heating power [kW]
HP W 10	160	130	100	60	30
HP W 25	200	250	250	80	70
HP W 150	480 x 480	650	1500	380	200
HP W 250	440	580	2500	300	200
HP W 250-SP	700 x 700	1100	2500	420	260
HP W 400	590 x 700	780	4000	400	350
HP W 400-SP	800 x 800	1500	4000	680	350