Generally a model (pattern of the casting part) is required for moulding accounting for compensation of volumetric shrinkage during alloy solidification. Sand casting moulds are produced in at least two-part patterns to allow for quick and easy shake-out after casting. The mould is put under thermal and mechanical stress so highly in the course of the casting trial, so that it looses its original strength and can therefore only be used once.
Volume compensation in the liquid state is incorporated by the typical use of a single or several feeders depending on the actual used casting alloy. Inner contours or cavities are produced via separately manufactured cores. Solidification can be directed by integrated cooling chills.
TEST SPECTRUM
- Casting tests according to customer-specific requirements
- Castings in pressure, gravity and low-pressure die casting processes
- Metallurgical and casting technology tests
- Process optimisation and alloy development
- Failure analysis and component sampling
- Heat treatment optimisation
- Training courses
APPLICATIONS
- Test castings and project-specific tests in Al-alloys (gravity die casting, low-pressure die casting and pressure die casting)
- Mg-alloys under protective gassing (gravity die casting, low-pressure die casting and pressure die casting)
- Zinc, copper, brass and bronze alloys (gravity die casting)
- Induction furnace melting plant (Junker 2, 20 or 40 kg aluminium)
- Die casting machine (Bühler SC D/53, 5300 kN clamping force)*
- Low pressure die casting machine (Kurtz AK92)
- Gravity die casting machine (GF DISA)
- Al-melting and dosing furnace (2x Nabertherm, 200 kg)
- Mg-melting and dosing furnace incl. gas mixing station (Rauch, 150 kg)
- Dosing robot (KUKA) and melt dosing (Meltec)
- Modern heat treatment furnaces (air circulation, bogie hearth and chamber furnaces)
- Wollin mould spraying portal; mould tempering equipment (Robamat, Regloplas, Thermocast)
- Jet cooling (Lethiguel) for die casting applications
- Data recording unit (Electronics)
- Multi-channel data acquisition and control systems (Gantner, Eurotherm)
- Melt control and cleaning systems (Foseco)
- Extensive technology mould park
* In cooperation with the Chair of Casting Research (LfGk - University of Leoben)