Molds & Tooling
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ASA improper mold temperature poor gloss
Fenómeno del problema
ASA product surface gloss is low, dark and matte, not matching exterior high-gloss requirements; after raising mold temperature, cycle extends but gloss improvement is limited.
Análisis de la causa
Mold temperature directly affects ASA surface replication and rubber phase distribution state; 30~60℃ mold temperature suits general parts, high-gloss appearance parts need a higher mold temperature range; insufficient cavity polishing also limits the gloss upper limit.
Solución
①Raise mold temperature of high-gloss parts to 60~80℃ and verify surface improvement; ②mirror polishing of cavity to high-gloss standard; ③cooperate with higher melt temperature and injection speed; ④balance gloss and cycle by optimizing cooling water channels.
Conclusión clave
ASA gloss is the superposition of three elements: mold temperature, polishing, and temperature-speed; mold polishing investment for exterior parts cannot be saved; the contradiction between cycle and gloss is reconciled by water channel optimization.
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