Molds & Tooling
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ASA Cold Slug Mark
Problem Phenomenon
【Problem Phenomenon】Irregular cold slug marks on ASA product surface, front-stage filling disorder
Cause Analysis
Nozzle temperature low or cold slug well insufficient, front cold material enters the cavity; amorphous material cold material is difficult to re-fuse; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
Nozzle temperature matched to front section; enlarge cold slug well; increase injection speed to reduce front cooling; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
ASA cold slug marks check nozzle temperature and cold slug well; 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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