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2007-09-25 Manufacturing News

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LTC advantages for die casting

Low Temperature Casting increases the efficiency of your die casting system by selective process modification while reducing cycle and down times.

Low temperature casting increases the economic efficiency of die casting systems with a targeted process modification. With LTC (Low Temperature Casting), the existing diecasting process is set to a lower energy process window. To ensure stable production, the process and tempering parameters must be adjusted.

The benefits that can be achieved using LTC include:

- Reduction of cycle time

- Increase in die service life

- Less burr formation

- Fewer die-related production stops

Increased system productivity
Casting the metal close to the liquidus temperature enables the solidification time to be reduced thanks to the lower
heat content of the molten metal. The lower die surface temperature achieved by the LTC process increases the die
service life and in addition allows the die spraying time to be reduced.
Targeted adjustment of the process parameters additionally reduces flashing and thereby diminishes die-related
downtimes.

BUHLER Low Temperature Casting (LTC). Applicability.

The following requirements must be fulfilled for LTC addition to your die casting system
- Machine with dat@speed or dat@net control system
- Automatic molten metal feed from a ladling furnace
- Alloy 226 (AlSi9Cu3)

The following retrofits are required
- LTC software module
- Addition of the cooling unit

LTC software module. photos: Buhler Druckguss AG

Individualized process modification for increasing system output.

Features

- Process modifications required
In addition to the actual hardware, which is added between the ladling furnace and the shot sleeve, it is also necessary
to adjust the process parameters such as shot profile, final metal pressure, and die temperature control parameters.

- Targeted energy removal
The heat capacity removed from the cooling unit is registered per cycle and saved to the trend data registration system.

- Energy monitoring
LTC is equipped with an energy monitoring system integrated in the machine control system.

For additional information on Low Temperature Casting for your die casting system contact the Buhler AG group, Uzwil, Switzerland, by E-mail at die-casting.info@buhlergroup.com

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