| HotFlo! | Advanced Shot Monitor: Plunger Position | |
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It is the plunger that does the hard physical work of forcing the molten metal into the cavity, so it is important to measure its position for each shot. When the pour hole in the shot sleeve has been closed, that defines the start of a new shot. Die-Shot then takes over 1000 data point readings per second of the plunger position, so a typical shot will have 3000 measurements. The Plunger Position screen displays a chart showing plunger position throughout the shot, but it is also used to set or record critical parameters such as :-
The length of the biscuit (or 'slug') at the start of the runner, is an important parameter for assessing the quality of a cold chamber Die Casting. A short biscuit is an indication the the die has 'flashed'. Variability in biscuit length is a measure of the ladle filling accuracy. With Die-Shot you can specify a minimum length and a maximum length and set an 'Alarm' to warn you when it is outside these values. This alarm will display as a Red Light on the plunger position screen and also on the main Control Screen. Plunger Position Sensors Hotflo has a range of plunger sensors so you can choose the one that best suits your machines.They are suitable for both Hot Chamber and Cold Chamber Die Casting machines, including:-
It is also possible to operate four of the Die-Shot modules without a plunger position sensor, but a Proximity Switch or Limit Switch instead. This applies to the Cavity Pressure, Ejection Force, Vacuum and Duct Clean modules. This enables a quick, simple set-up as you might require for a portable Die-Shot system. The Die-Shot system is very flexible, easy to use, and a vital tool to control your process. |
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