Molds & Tooling
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PA6 First Article Temperature Confirmation
Problem Phenomenon
Producing immediately after start-up, the first few shots are unstable in both dimensions and appearance
Cause Analysis
At start-up, the barrel and mold temperatures have not yet reached equilibrium, the melt temperature and mold temperature are in the ramping stage, and process condition fluctuations cause unstable product quality; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Run idle for 10-15 minutes after start-up until the temperature balances, and inject only after confirming that the actual measured melt temperature and cavity surface temperature meet the standards; mass produce after the first article is fully dimensionally confirmed according to the inspection specification
Key Takeaway
Temperature equilibrium is the threshold for start-up quality, and first article confirmation is irreplaceable; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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