Tutorial: Adding a Riser and Sleeve

Compare the solidification in a riser with that of risers with isothermal and exothermal sleeves.

In this exercise, you will learn how to analyze the effect a sleeve has on casting.

Model file is available in the tutorial_models folder in the installation directory in Program Files\Altair\2022.3\InspireCast2022.3\tutorial_models\sleeve.x_b.

Import Geometry

  1. Launch Inspire Cast.
  2. Click Open Model on the Files icon and browse to the tutorial model file in the installation directory, or drag-and-drop the file into the modeling window.


Designate a Casting Part

Select casting geometries with the Cast Part tool.
Important: A cast part must be defined before performing any other operation.
  1. On the Cast Part icon, click Designate Casting Part.
  2. Left-click to select which candidate is a cast part.
    Parts are automatically detected and highlighted based on your cursor position. Since there is a single geometry the entire cast part will be automatically highlighted.
    The selected part is highlighted red.
  3. In the microdialog, select Cast-Iron as the material and GJS-700-2 as the alloy for the part.
  4. Right-click and mouse through the check mark to exit, or double-right-click.

Add Risers

  1. Click the Components tool.

    Click the Add/Edit Riser tool in the secondary tool group.
  2. Click the center of the end of the first arm to create a riser and leave the default values.


  3. Click the center of the end of the second arm to create another riser and change the Modulus to 1.1.
    Note: For the second branch we are going to use an Isothermal Sleeve. We can decrease the riser size since an isothermal sleeve keeps heat and helps the riser feed the part longer.


  4. Click the center of the end of the third arm to create another riser and change the Modulus to 1.0.
    Note: For the third branch we are going to use an Exothermal Sleeve. We can decrease the riser size even more since an exothermal sleeve releases heat during its burn and helps the riser feed the part longer.


Add Sleeves

  1. Click the Components tool.

    Click the Add/Edit Sleeve tool in the secondary tool group.
  2. Click the riser on the second arm to create a Generic isothermal sleeve on top of it, and enter a temperature of 20° C and Thickness of 10.5mm.


  3. Click the riser on the third arm to create a Generic exothermal sleeve, and enter a temperature of 20° C and Thickness of 8.9571mm.


  4. Right-click and mouse through the check mark to exit, or double-right-click.

Run Analysis

  1. On the Analysis icon, click Run Analysis.
  2. In the Run Analysis dialog, in the Stages tab, deselect Run a filling analysis.
    Note: For this demonstration, we do not need a filling analysis. Also, since we did not add a gate, a filling analysis will not run.
  3. Select the Advanced tab to manually select mesh factors for components like gate, mold, runner, riser, etc.

  4. Select the Stages tab and click Run.
    Note: The mold will automatically generate when you click Run.
    Note: Once the simulation calculation is finished, a green flag will appear on the analyze icon.

Analyze Results

  1. Click the green flag on the Analyze tool.
    Note: You can also view the results by selecting the run and clicking View Now in the Run Status window.


  2. Click Solid Fraction under Result Types.


  3. Set the Solid Fraction percentage to 0.70.


    Note: The solid fraction value is set to 0.7 by default. In most cases, this corresponds to the value at which the liquid stops flowing.
  4. Click Play to start the animation.
    In the animation, solidified material (above 0.7) is transparent, while liquid material (below 0.7) is shown colored. Shrinkage porosity is more likely to occur in isolated areas.

    Despite the diminished size of the second and third risers, they are able to feed the part longer because of the effect of the sleeves.



  5. Click Demolding under Stage, and click Porosity under Result Types.


  6. Set the percentage to 100%.


    Despite the difference in sizes of the risers, all of the porosity is formed in them rather than in the part, thanks to the sleeves.