Processing Machinery
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PMMA Laser Cutting Heat Affect
Fenómeno do problema
A heat-affected zone appears on laser-cut edges, with transparent edges whitening and slightly melting
Análise das causas
Laser energy locally melts and resolidifies the cut surface, forming a heat-affected zone; when power and speed do not match, edge whitening and micro-melt beads are obvious, affecting optical parts; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solução
①Optimize the matching of laser power and speed; ②leave machining allowance on optical edges and polish afterward; ③switch high-requirement parts to CNC or waterjet cutting; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Laser cutting is fast but has a thermal cost; optical edges are remedied with allowance plus polishing, or simply switch to cold machining processes; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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