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GeniCore U-FAST(SPS) COMPACT

The SPS (Spark Plasma Sintering) technology, also called FAST (Field Assisted Sintering Technology), enables effective consolidation of pure metal powders, metal alloys, as well as ceramic and metal composites using pulsed direct current. The key aspect of FAST technology is the ability to perform the sintering process at a much lower temperature than other available methods. This has a positive effect on limiting grain growth and provides much better parameters of the created materials. The advantages of FAST also include very short sintering time and homogeneity of the resulting material and high energy efficiency associated mainly with the direct generation of heat inside the material. GeniCore U-FAST, thanks to its advanced heating system based on a unique pulse shape allows to achieve better results compared to other available FAST devices. This fact has determined the name of the device hence the name GeniCore U-FAST (Upgraded Field-Assisted Sintering Technology). The tests carried out so far on U-FAST materials open up a number of possibilities in areas where the expected material quality is not achievable with other methods. Current activities of GeniCore have confirmed the validity of the use of U-FAST materials in the tool industry, mining and advanced electronics. These are one of the first application possibilities, which will certainly be much more given the intensity of research work.

U-FAST COMPACT for R&D Applications

* Pressing force – possible options of hydraulic system or servopress.

** Max Current – The final value of the current is related to the value of the on-site connection voltage , so it can vary accordingly. Max output current can be increased up to 5 000 A.

The GeniCore U-FAST COMPACT model is a great choice for R&D applications where the aim is to develop new materials which can be then scaled up to bigger diameters by using GeniCore U-FAST GC (SPS) Device.

A vacuum chamber is a double-walled stainless steel construction supported by a steel frame. It is cooled by water that flows between the walls. The internal walls are thoroughly polished and protected by stainless steel reflectors, which are installed on the side walls and doors.

The doors open with hinges from left to right to allow material to be loaded and unloaded, and to inspect and maintain the chamber. Closing is carried out by means of two manually operated clamps.

The chamber is equipped with a set of sealed flanges for connection:
• Pumping system
• Actuator
• Viewing ports (sight glass)
• Safety valve
• Vacuum gauge port
• Thermocouple port
• Two additional spare ports

In the U-FAST COMPACT device the temperature is measured by pyrometers. The reading are recorded by the logic controller which enables easy control of the process and its subsequent analysis.

The temperature is controllable by a programmer (with several possible ramps and steps). The temperature controller (PLC module) can be connected with additional two type K thermocouples which can work with various temperatures including temperatures below 1000°C. Nevertheless, the GeniCore solution with additional side pyrometers covers full temperature range from RT to 2500℃, so the thermocouples are mainly an additional feature for scientific benefits.

The U-FAST COMPACT vacuum system includes:
• Rotary pump,
• Measuring sensors,
• Vacuum valve,
• Air admittance valve,
• Safety valve,
• Turbomolecular pump.

Thanks to an appropriate measurement system, the whole is managed by the automation system controlling the pump and valves.

The inert gas system supplies the chamber with gases. It consists of:
• Pressure relief valve
• Inlet valve
• Pressure gauge set for pressure measurement
• Mass Flow Controller for gases

The gas system will allow to introduce inert gas: argon, helium, nitrogen into the sintering chamber by using PLC controlled digital thermal mass flow controller for gases. It will allow to specify the percentage of the inert gas volume in the sintering chamber by using the U-FAST COMPACT HMI

Manufacturing process

Mold inside U-FAST chamber

Temperature measurement

Conventional Method

Indirect heating (radiation / convection)
  • Heating by radiation
  • Low heating factor
  • Temperature gradient in sintered materials
  • Time-consuming and energy-consuming processes

U-FAST technology

Direct heating (conduction)
  • Heating using Joule heating
  • Fast, economical processes (30 min)
  • Low energy consumption
  • Lower sintering temperature
  • Limited grain growth

Pulse duration below 1 ms

Pulse duration, which lasts even less than 1ms, gives the advantage of our U-FAST technology over SPS devices from competitors. Current pulses are shown using an oscilloscope

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