Molds & Tooling
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ASA Shrinkage Rate Management
Problem Phenomenon
ASA shrinkage rate 0.4-0.7% is low, post-shrinkage negligible, mold design.
Cause Analysis
ASA typical shrinkage rate 0.4-0.7%; post-shrinkage negligible; amorphous material; dimensional stability; mold design compensation; process influence.; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
①Mold designed at 0.4-0.7%; ②post-shrinkage ignored; ③dimensional stability utilization; ④process stability; ⑤actual measurement verification.; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA low shrinkage and negligible post-shrinkage are dimensional advantages; mold design precise; verification ensures accuracy.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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