Production & Quality
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POM Regrind Usage Ratio
Fenómeno del problema
After adding regrind, part brittleness increases, dimensions fluctuate, and color difference of natural material is obvious
Análisis de la causa
After experiencing heat history, POM regrind's thermal stability declines, and too high a ratio dilutes performance; the recycled material ratio generally should not exceed 20-30%, depending on product type and end use
Solución
①Control regrind ratio within 20-30%; ②lower the ratio for load-bearing and precision parts; ③keep regrind clean and dry with batch verification; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Conclusión clave
POM regrind has a clear ratio discipline; the 20-30% upper limit plus use-based grading balances cost and quality; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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