Tips & Tricks: Performing a Mold Analysis in 5 Steps




Incomplete cavity filling, undesirable weld line location, improper wall thickness—these issues can ruin your injection molded piece. That’s why one of the best things you can do when you create a model is to make sure it is optimized before you ever send it to manufacturing.

In PTC Creo 3.0, you can analyze your model for problems with mold flow. That means you can FIX the problems, too, saving everyone a ton of time and money. PTC Creo Mold Analysis is an injection molding simulation application that can verify the part design for manufacturing to avoid molding defects while the design is still in your CAD system.

 

Mold Analysis can show the flow pattern during the filling process with respect to time. A drastic color change in a region means that the flow speed is lower than in another area. An optimized result shows a balanced flow contribution of each gate.

To run an analysis on your part, follow these 5 steps.

Step 1: Set the Material

  1. Click Applications > Mold Analysis. The Mold Analysis tab opens.
  2. Click Mold Analysis > Material Setup.
  3. On the Material Setup dialog, select a material from the Material library. If the material is not available in the library, you can modify the properties of an existing material.

 

The Material Setup dialog is used to set the model’s material properties.

Step 2: Set the Gates

  1. On the ribbon bar, click Mold Analysis > Gate Setup to add gates on the model.
  2. Add a gate location manually or automatically. You can also edit the gate diameter.

 

Add gates manually or automatically, and then use the Gate Setup dialog to specify the diameter.

Step 3: Set Up the Analysis

  1. On the ribbon bar, click Mold Analysis > Analysis Setup to set up the process conditions for the analysis.
  2. Using the Analysis Setup dialog, select options for additional simulations for estimating the cooling time and sink mark. Select the mesh element size based on the accuracy required for the analysis.
  3. Once you have set conditions for the analysis, click Run Analysis. You can perform multiple analyses by changing the material, gates, and process conditions on a model.
  4. View the results, and then from the ribbon bar, click Select Analysis.
  5. Select an analysis from the Select Analysis dialog box and click the options in the Analysis Results and X- Y Plot groups. Use the Result Advisor dialog box to view the issues found in the analysis. Click the issue to view the suggested solution.

Click an issue in the Result Advisor dialog box to view the suggested solution.

Step 4: Simulate the Melt Front Time

  1. On the ribbon bar, click Mold Analysis > Melt Front Time > View Control.
  2. On the View Control dialog box, click Animation, and then click the play button. Ensure the mold fills in an even manner.

Step 5: Generate a Report with Analysis Results

  1. On the ribbon bar, click Generate Report.
  2. Fill fields on the Create Report dialog box, and then click OK to generate the report. You can generate a detailed report of the analysis in the Microsoft PowerPoint (.ppt) format.
  3. Avoid rework, and save time and money. Run a mold analysis using the steps above BEFORE sending your design to manufacturing.

To see a demonstration of these steps, register for a (free) PTC University Learning Exchange account and then watch this video. You can also check out the PTC Creo Help Center page About PTC Creo Mold Analysis for more detail.

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