Processing Machinery
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EVA foaming hardness adjustment
Fenómeno del problema
The product hardness does not reach the target range.
Análisis de la causa
Hardness is jointly determined by the foaming ratio, crosslinking degree, and formula; a single parameter adjustment is difficult to control precisely.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solución
①Adjust the combination of foaming ratio and crosslinking degree; ②optimize the filler ratio; ③optimize by DOE according to the hardness target; ④test and verify.; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Conclusión clave
Hardness adjustment is a multi-factor optimization problem; systematic experiments are more efficient than single-item trial and error.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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