If we are to achieve best mechanical properties of highly mechanically loaded parts (safety components, assemblies ...) of aluminium castings, we use low pressure die casting. This procedure requires extended cycle times using a demanding technology, which results in higher prices of castings.
Casting on a low pressure die casting machine follows the principle of displacement of the melt from an airtight and electrically heated furnace into the permanent mould through a feeding system. The process is enabled by the pressure, supplied to the melt surface, whereas casting is performed bottom-up. For displacement of the melt from the furnace we use the air with a maximum pressure of 1 bar.
The solidification process of castings takes place in zones and is directed by locally supplied air currents on the outer side of the mould. At the end of the solidification process the pressure at the feeding core in the furnace is released and the melt falls back through the feeding pipe.
- LPM, LPM1, LPM2, all with shuttle system