Injection Molding
1 views
Glass Fibre severe internal stress concentration
Problem Phenomenon
Glass Fibre product internal stress >15MPa, causing storage cracking
Cause Analysis
Injection speed too fast, orientation stress large; uneven cooling freezes thermal stress; gate position improper, flow orientation concentrated
Solution
1) Reduce injection speed to reduce orientation; 2) uniform mold temperature to reduce thermal stress; 3) anneal 80°C/4h to release stress; 4) optimize gate position
Key Takeaway
Internal stress is caused by fast injection and uneven cooling; speed reduction, uniform cooling and annealing are key
Was this helpful?
0 people found this helpful
Thank you for your feedback!