Injection molding machine screw yɛ afiri no fã titiriw, na wɔde di dwuma titiriw de fa plastic nneɛma a wɔde yɛ nneɛma no kɔ, wɔde hyɛ mu, wɔde hyɛ mu, na wɔde hyɛ mu. Ne nhyehyɛe ne ne dwumadi nya plasticizing efficiency ne product quality so nkɛntɛnso tẽẽ.
Screw nipadua no yɛ ɔfã a ɛma aduan, ɔfã a wɔde mia, ne ɔfã a wɔde yɛ homogenization. Ɔfã a wɔde ma aduan no na ɛhwɛ ma wɔde nneɛma a wɔde yɛ nneɛma a ɛyɛ den di kan yɛ hyew na ɛde kɔ; ɔfã a wɔde mia no no tumi yɛ nwene, frafra, na mframa fi mu; na homogenization ɔfa no hwɛ hu sɛ melt hyew ne flow stability yɛ pɛ. Wobetumi agyina nsonsonoe a ɛwɔ plastic su mu so akyekyɛ nkɔnsɔnkɔnsɔn mu abiɛsa: gradient type (ɛfata ma ɔhyew-nneɛma a ɛyɛ mmerɛw te sɛ PVC), abrupt type (a ɛfata ma polyolefins), ne general-purpose type. Nsonsonoe titiriw no wɔ tenten ne shear ahoɔden nhyehyɛe a ɛwɔ compression section no mu. Nneɛma titiriw bi ne diameter, aspect ratio, ne compression ratio, a ɛsɛ sɛ ɛne nneɛma no su hyia na ama plasticizing nsunsuanso atu mpɔn. Nneɛma a wɔtaa de di dwuma ne nneɛma a ɛyɛ hyew a ɛkorɔn na ɛho ntew-nneɛma a ɛko tia te sɛ 38CrMoAla aduru ne tungsten carbide nickel-aduru a egyina so. Bere a wɔde redi dwuma no, ɛho hia sɛ wɔyɛ ɔhyew a wɔahyɛ da ayɛ ne ahotew ne nsiesie daa na amma skru no anhwe ase anaasɛ mfiri ansɛe.
