Processing Machinery
6 visualizações
PMMA Weld Line Visible
Fenómeno do problema
Weld lines on transparent parts are clearly visible, optical appearance is unqualified, and machine adjustment is difficult to eliminate them
Análise das causas
PMMA has poor flowability, and the interface is clear when two melt fronts converge; weld lines on optical parts form even with correct parameters and must be minimized by design and low-speed processes
Solução
①Slow injection for optical parts to reduce weld line visibility; ②position gates to move weld lines out of visible areas; ③switch to single-gate filling when necessary; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Weld lines on PMMA optical parts can only be minimized, not eliminated; design position transfer is more effective than process remedies; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!