Processing Machinery
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ASA Warpage Deformation
Problem Phenomenon
【Problem Phenomenon】ASA flat plates and frame parts warp, assembly fit is poor
Cause Analysis
Uneven cooling, wall thickness differences, molecular orientation and internal stress release cause warpage; amorphous material warpage mostly originates from process rather than crystallization; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
Mold temperature homogenization and independent temperature control of front and rear molds; holding pressure symmetric design; wall thickness homogenization; shaping fixture when necessary; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA warpage mainly check cooling uniformity, holding pressure symmetry assists; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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