Extrusion & Post
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PMMA Surface Hardening
Problembeschreibung
Acrylic panels show increasing scratches during use, and transparency decreases due to wear
Ursachenanalyse
PMMA surface hardness is only 2H level and is easily scratched; chemical coating hardening treatment can raise the hardness to 4-8H and is widely used for optical lenses and electronic panels; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Lösung
①Apply hardening coating treatment to parts with wear-resistance requirements; ②thoroughly clean and polish the surface before hardening; ③cover with protective film throughout handling and processing; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
PMMA's scratch-resistance shortcoming is made up for by hardening coating; the improvement from 2H to 4-8H is standard treatment for panels; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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