Molds & Tooling
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ABAK weld line strength
Problem Phenomenon
ABAK multi-gate products have insufficient weld line strength, under the dual influence of two-phase interface and flow convergence.
Cause Analysis
The two phases are unevenly distributed at ABAK weld lines; the temperature of the flow front drops; compatibilizer distribution affects interfacial bonding; the weld line of the crystalline PA component is weaker; improper gate position.
Solution
①Increase melt temperature and injection speed; ②optimize gate position; ③vent the convergence area; ④optimize compatibilizer and dispersion.; After adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
ABAK weld lines are the weak link of the alloy; temperature, speed, and gate are all important; dispersion quality affects the interface.; After confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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