Three-dimensional heat transfer simulation using popular commercially available finite element software packages can be used to predict the transient mold thermal state until the quasi steady state is achieved and thus predict the needed cooling time
Packing pressure 50 MPa Packing time 10 sec Cooling time
25 sec Flow rate 7.
After approximately 25 min of cooling time
, the molds are dumped onto a shakeout line that discharges the castings onto a conveyor and then into a water quench conveyor, where they are cooled and any loose sand is removed.
For example, take a part needing 12 sec of cooling time
before the part is solidified enough to be ejected without distortion, sticking, pin push, or other typical problem with parts too hot to eject.
Cycle time is also said to be up to 25 per cent lower due to the faster injection rate and reduced cooling time
The study establishes the relationship between the cooling time
and the fusion performance.
The company says that it can increase output by up to 20 per cent through faster injection and reduced cooling time
The RAM 28 with a range of 2-inch IPS to 8-inch DIPS both with Ritmo's Easy-Life program/control panel allows the operator to set the machine for heating temperature, facing pressure, heating time, soaking time, fusion pressure, fusion time and cooling time
The system is designed to accommodate flaskless molds at a maximum rate of 120 molds/hr with 70 min of in-mold cooling time
Process conditions include pack pressure, pack time, injection speed, mold temperature, melt temperature, and cooling time
Accordingly, there are at least two important concepts to consider in terms of cooling system design and processing conditions during the cooling stage of the injection molding process: (a) minimizing cooling time
and (b) achieving uniform cooling.