Injection Molding
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ABS injection cycle too long, low capacity
Fenómeno do problema
The cooling time accounts for too large a proportion of the cycle, the tempo cannot go up, and the capacity is limited.
Análise das causas
The wall thickness design is too thick, the water circuit efficiency is low, and the mold temperature setting is unreasonable, forcing the cooling time to be lengthened; runner cooling also drags down the cycle, especially obvious for thick-wall ABS parts.
Solução
①Optimize the wall thickness and reduce material at rib positions; ②unclog the water circuits, calculate the flow and temperature difference; ③add beryllium copper inserts or conformal water circuits at thick-wall areas; ④evaluate hot runners to shorten runner cooling; ⑤balance the mold temperature and cycle.
Conclusão principal
To reduce the ABS cycle, first 'cut the cooling': start with water circuit efficiency and wall thickness, conformal water circuits are a sharp tool; the bulk of the cycle is cooling, don't spend all your energy on the few seconds of injection.
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