Processing Machinery
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PESU Impact Resistance
Fenómeno del problema
PESU unnotched impact does not break, but notch sensitivity requires attention in design.
Análisis de la causa
PESU has excellent toughness, unnotched impact does not break; but notch sensitive; design avoids sharp corners; uniform wall thickness; stress concentration.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solución
①Design rounded corner transitions; ②uniform wall thickness; ③avoid notches; ④stress analysis.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record the parameter changes, to facilitate identifying effective measures
Conclusión clave
PESU toughness and notch sensitivity coexist; design is the prerequisite for exploiting the advantage; analysis prevents failure.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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