System for Hot Gas Forming
For hydroforming at elevated temperatures, hydraulic media are less suitable because of the occurring thermal decomposition. If temperatures of more than 300 °C are required during forming, gaseous media can be used. For this purpose, a high-pressure compressor is used in the system at the PtU, which provides air with a pressure of up to 300 bar. The pressure medium is introduced into the heated workpiece via high-temperature-resistant axial cylinders. The shaping tools are heated to the desired temperature by means of heating cartridges. A thermally insulated press with a pressing force of up to 600 kN is used to close the tools.
- Closing force of the press: 600 kN ≙ 60 t
- Force of the axial cylinders: 150 kN
- Medium pressure for hydroforming: 300 bar
- Maximum temperature: 580 °C