Process Settings Wizard dialog-RTM/SRIM Settings

This page of the Process Settings Wizard, which can be accessed by clicking process settings icon (Home tab > Molding Process Setup panel > Process Settings), is used to specify the Resin Transfer Molding (RTM) and Structural Reaction Injection Molding (SRIM) related process settings for the selected analysis sequence.

Note:

The RTM analysis will be used if you are analyzing a fiber-reinforced plastic.
Some of the items listed below may not be available on the current dialog. This is dependent on the mesh type, molding process and analysis sequence selected.

Dialog element	Explanation
Mold surface temperature	The temperature of the mold at the plastic-metal interface, where the plastic touches the mold. In cases where this is an input box, enter the required mold temperature. Note: The temperature of the mold affects the cooling rate of the plastic. The mold temperature cannot be higher than the ejection temperature.
Melt temperature	The temperature of the molten plastic, or melt, as it starts to flow into the cavity. In cases where this is an input box, enter the required melt temperature. Note: If the model has a runner system, the melt temperature refers to the temperature of the melt as it enters the runner system. If the model does not have a runner system, the melt temperature is the temperature of the melt as it exits the gate(s). The melt temperature cannot be lower than the Transition temperature.
Nominal injection time	Enter the injection time that you would use with the injection unit for the process. The actual predicted injection time will be affected by the injection profile settings specified on the next page of the Wizard and the predicted fill pattern.
Melt initial conversion	Enter a value between -1 and 1 to specify the initial conversion (curing) level at the injection location.
Curing duration	The time taken for a thermoset material to become sufficiently cross-linked from heating to form a solid and freeze.
Machine pressure limit	The maximum allowable hydraulic pressure that can be used on the injection molding machine. You can set either a maximum machine injection pressure or a maximum hydraulic pressure with conversion ratio. Specify the maximum pressure limit for the injection molding machine.
Intensification ratio	The ratio of the material pressure in front of the screw, compared to the oil pressure in the piston of the injection molding machine. You may find this ratio in the machine manual. The typical ratio is 10, and the range of the ratio is between 7 and 15. Enter the required intensification ratio. Note: You can calculate the material/hydraulic pressure ratio by dividing the piston area by the screw area.
Preconditioning analysis	Specifies whether a preconditioning analysis should be performed. Preconditioning data are used to calculate the melt temperature. If you choose to perform preconditioning analysis, click Edit Data... to specify the preconditioning data.
Advanced options...	Displays the advanced options for the analysis.
Fiber orientation analysis if fiber material	Enables a Fiber orientation analysis if the material includes fiber.
Filling duration	Specifies the duration for the filling stage of an RTM process. This input is only used if a Cool analysis is performed without a Flow analysis.
Injection + packing + curing duration	Specifies the duration for the injection, packing and curing period of a reactive molding process type. It is only present if a Cool analysis is in the analysis sequence.
Cool down duration	Specifies the duration for the cool down stage of an RTM process sequence. It is only present if a Cool analysis is in the analysis sequence.
Cool (FEM) Solver Parameters for 3D RTM...	Displays the Cool (FEM) solver parameters for the RTM process, if a Cool (FEM) analysis is included in the analysis sequence.