Understanding Shrink & Warp
“Immediate success of this Beaumont training has prompted us to offer these specialized courses to personnel at most of our other plants. By showing actual parts, attendees could easily see and relate to what was taking place — or not taking place — during the molding process. Thus, all functions from design through QC can now relate and understand the numerous influences that rheology, process changes and mold design practices have on the molded parts.”
Jorges Cortes, process engineer at Elcom
Course Description
This course is designed for those involved in plastic part and mold design, processing and troubleshooting warped parts. The course begins with in-depth discussions on plastics and plastic flow. The course then dives deeper into understanding and recognizing volumetric versus orientation-induced shrinkage, and how each causes parts to warp. Students will learn thought processes that help them distinguish between the two types of shrink, and how to isolate possible root causes within each. Students also learn various strategies for reducing warp by evaluating options in part design, mold design and processing.
Download Course Overview:
Highlights
- Understanding amorphous and semi-crystalline materials
- Linking PVT diagrams to injection molding
- Fundamental plastic flow characteristics
- Understanding viscosity and its role on process and part quality
- Videos of plastic flowing through molds
- Misunderstandings of laminar and turbulent flow
- Shear rate versus shear stress
- Myths of Melt Flow Index
- Different types of plastic shrinkage
- Different types of warp
- Strategies for predicting warp
- Effect of fillers on shrink and warp
- How process can affect shrink and warp
- Mold and part design strategies for reducing warp
- How orientation can make or break a part
- How gate location affects warp
- Pitfalls of common part design guidelines
- Breakout session for evaluating warped parts
Additional Information
- The Understanding Shrink & Warp course costs $650
- Course duration is two (2) days
- Courses are held 1524 East 10th Street, Erie, PA 16511 USA
- Participants receive a course manual
