Gas-Assisted Injection Controller dialog

The Gas-Assisted Injection Controller dialog is used to specify gas injection settings for a Gas-assisted injection molding analysis.

The collection of property values defined on the dialog are saved to a property set with the description shown in the Name box.

Prerequisites

Mesh type: Analysis sequence specific

3D or
Midplane

Molding Process: Gas-assisted Injection Molding

Analysis sequence: Dependent on mesh type

Dialog location: Click (Boundary Conditions tab > Gas panel > Set Entrances). The Set Gas entrance dialog opens. Click New. In the Gas entrance dialog, click Edit.

All solver parameters have a default value that is suitable for most analyses.

Dialog element	Explanation
Gas delay time	The gas delay time is the time from velocity/pressure switch-over to when injection of gas into the mold begins. If you want the gas to be ejected immediately at the time of velocity/pressure switch-over, enter a delay time of zero.
Gas injection control	Select whether you want the solver to automatically determine a suitable gas injection profile for your part, or whether you want to enter a profile manually.
Gas injection control by	Select the gas injection controller type you want to simulate. The following options are available: Gas pressure controller Select this option to simulate the constant pressure process where the gas pressure is profiled during the gas injection cycle. This corresponds to the Battenfeld Airmold process. Gas volume controller Select this option to simulate the constant volume process where a preset volume of gas is available to be injected. No additional gas is supplied during the molding cycle. This corresponds to the Cinpres process. After selecting a suitable option from the drop-down menu, click Edit Controller Settings to access a dialog where you can enter the gas profiling data.

Dialog element

Explanation

Gas delay time

The gas delay time is the time from velocity/pressure switch-over to when injection of gas into the mold begins. If you want the gas to be ejected immediately at the time of velocity/pressure switch-over, enter a delay time of zero.

Gas injection control

Select whether you want the solver to automatically determine a suitable gas injection profile for your part, or whether you want to enter a profile manually.

Gas injection control by

Select the gas injection controller type you want to simulate. The following options are available:

Gas pressure controller: Select this option to simulate the constant pressure process where the gas pressure is profiled during the gas injection cycle. This corresponds to the Battenfeld Airmold process.
Gas volume controller: Select this option to simulate the constant volume process where a preset volume of gas is available to be injected. No additional gas is supplied during the molding cycle. This corresponds to the Cinpres process.

After selecting a suitable option from the drop-down menu, click Edit Controller Settings to access a dialog where you can enter the gas profiling data.