Leading Trade Fair for Powder & Bulk Solids Processing and Analytics
29.9 - 1.10.2020 // Nuremberg, Germany
New furnace system for ceramic and powder technology:
Debinding and sintering processes require a range of different types of furnace systems tailored to the various temperature ranges and furnace atmospheres. To date it has not been possible to carry out thermal processes over a wide range of temperatures with different atmospheres, from reducing to oxidising, in a single system as a result of the various operating requirements.
The ISO15 furnace system provides a solution to this. Using a new, patented method and a new type of system for the integrated sintering and debinding of shaped glass-ceramic, ceramic and metallic parts it is possible to achieve a consistent mode of operation for both processes. In addition to considerable savings in time and costs, this also offers a range of completely new opportunities for process control. Furthermore, the handling risks posed by having to transfer the debindered material are eliminated.
In order to achieve all this, the manufacturer has used new heating elements, a new layout for the heaters and a new type of insulation system, which can be used for both low and high temperatures and in both oxidising and reducing atmospheres. In addition a method is used, which by virtue of the type of temperature gradient and gas control set over the insulation allows the binding agents to be removed in full and sintering to be carried out in a pure atmosphere (gradient method). The debinding process can be maintained up to a temperature of approx. 1000 °C which results in lower impurity levels such as very low residual carbon contents. In sintering mode an appropriate gas control system and the gradient method prevent the recontamination of the sintered material. In addition, the atmosphere can be freely selected, be it air, inert gas or hydrogen. Partial pressure control is also possible at any point. A cleaning fire in air or in a vacuum can remove impurities caused by a breakdown. A convenient control and regulating system, based on a Siemens S7 PLC with all the necessary safety systems, enables the user to complete the required process easily and safely.
Technical data:
Accessories:
- Continuous procedure for debinding and sintering in one plant
- Residue-free desorption of binding agents
- Free choice of furnace atmosphere from oxidizing to reducing
- Sintering in pure atmosphere
- Through the use of new heater and isolation materials resistance in almost all atmospheres, e. g. oxygen or hydrogen up to 1.500°C, is achieved
- Through a new arrangement of the working chamber (furnace in furnace) the advantages of hot-wall and cold-wall furnaces are combined
- Gradient operation for the decrement of binder residue and other pollution, burn out in air for cleaning are possible
- Low carbon rates in the sinter products
- Simple and safe loading by shock-free elevator table
- Very good temperature distribution by all round heating of the working space
- Good accessibility of the periphery and for service by free standing recipient
- Compact construction and high integration density
- Modular regulation with SPS and process-tablo as well as process visualisation over PC
Debinding and sintering processes require a range of different types of furnace systems tailored to the various temperature ranges and furnace atmospheres. To date it has not been possible to carry out thermal processes over a wide range of temperatures with different atmospheres, from reducing to oxidising, in a single system as a result of the various operating requirements.
The ISO15 furnace system provides a solution to this. Using a new, patented method and a new type of system for the integrated sintering and debinding of shaped glass-ceramic, ceramic and metallic parts it is possible to achieve a consistent mode of operation for both processes. In addition to considerable savings in time and costs, this also offers a range of completely new opportunities for process control. Furthermore, the handling risks posed by having to transfer the debindered material are eliminated.
In order to achieve all this, the manufacturer has used new heating elements, a new layout for the heaters and a new type of insulation system, which can be used for both low and high temperatures and in both oxidising and reducing atmospheres. In addition a method is used, which by virtue of the type of temperature gradient and gas control set over the insulation allows the binding agents to be removed in full and sintering to be carried out in a pure atmosphere (gradient method). The debinding process can be maintained up to a temperature of approx. 1000 °C which results in lower impurity levels such as very low residual carbon contents. In sintering mode an appropriate gas control system and the gradient method prevent the recontamination of the sintered material. In addition, the atmosphere can be freely selected, be it air, inert gas or hydrogen. Partial pressure control is also possible at any point. A cleaning fire in air or in a vacuum can remove impurities caused by a breakdown. A convenient control and regulating system, based on a Siemens S7 PLC with all the necessary safety systems, enables the user to complete the required process easily and safely.
Technical data:
- Vacuum: up to 10 -3 mbar
- Max. positive pressure: 40 mbar (optional 2 bar abs.)
- Max. temperature debinding: 1.000 °C (any atmosphere); sintering: 1.500 °C (hydrogen); 1.600 °C (air, inert gas)
- Temperature distribution: ± 3 K
- Control constancy: ± 2 K
- Heating rate: up to 20 K/min
Accessories:
- charging devices
- cooling trap
- catalytic afterburning
- torch, electrical or gas
- different pumping stations
- partial pressure regulation
- vacuum debinding
- sample regulation
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