Material Drying
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PCABS Moisture Silver Streaks
Fenómeno do problema
PC/ABS moisture silver streaks are caused by insufficient drying, characterized by U-shaped marks; verify drying equipment.
Análise das causas
PC/ABS moisture silver streaks are caused by insufficient drying; U-shaped silver marks; steam forms at the gate; check dryer motor direction and dew point; not just the set temperature; actual performance.
Solução
①Verify drying temperature and time; ②dryer motor direction; ③dew point monitoring; ④actual performance evaluation; ⑤verify for 20-30 shots.; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusão principal
The U-shaped feature of PCABS moisture silver streaks is a diagnostic clue; the actual performance of the dryer is more important than the settings; verification ensures the effect.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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