Industrienyheder

Produktionsprocessen af ​​plastinjektionsstøbeformen

2022-02-11
1. Barrel temperature of the plastic injection mold: the temperature to be controlled in the injection molding process includes barrel temperature, nozzle temperature and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, while the latter temperature mainly affects the flow and cooling of plastics. Each kind of plastic has different flow temperature. For the same kind of plastic, due to different sources or brands, its flow temperature and decomposition temperature are different, which is due to different average molecular weight and molecular weight distribution. The plasticization process of plastic in different types of injection machines is also different, so the temperature of material barrel is also different.

2. Dysetemperatur påplastsprøjtestøbeformen: dysetemperaturen er normalt lidt lavere end tøndens maksimale temperatur, hvilket er for at forhindre "salivation" af smeltet materiale i den lige gennemgående dyse. Dysens temperatur bør ikke være for lav, ellers vil dysen blive blokeret på grund af den tidlige indstilling af det smeltede materiale, eller produktets ydeevne vil blive påvirket på grund af indsprøjtning af det tidligt hærdende materiale i formhulrummet.

3. Formtemperatur påplastsprøjtestøbeformen: Skimmeltemperatur har stor indflydelse på produkternes interne ydeevne og tilsyneladende kvalitet. Formtemperaturen afhænger af plastens krystallinitet, produktets størrelse og struktur, ydeevnekrav og andre procesforhold (smeltetemperatur, injektionshastighed, injektionstryk, støbecyklus osv.)
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