Processing Machinery
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PBT molding cycle
Problem Phenomenon
Long cycle and low efficiency.
Cause Analysis
Cooling accounts for a large proportion; fast crystallization has compression space.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first when troubleshooting
Solution
①Calculate cooling time; ②optimize water circuits; ③compress step by step; ④monitor quality.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
PBT crystallizes fast so the cycle can be optimized; data supports compression.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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