Iyo jekiseni yekuumba muchina screw chikamu chepakati chemuchina, chinonyanya kushandiswa kufambisa, kubatanidza, kunyunguduka, uye kumanikidza epurasitiki zvinhu. Chimiro chayo uye kuita kwayo kunobata zvakananga kuita kweplasticizing uye kunaka kwechigadzirwa.
Iyo screw body ine chikamu chekudyisa, chikamu chekumanikidza, uye chikamu chehomogenization. Chikamu chekudya chine basa rekutanga kupisa uye kuendesa zvinhu zvakasimba mbishi; chikamu chekumanikidza chinobudirira kunyunguduka, kusanganisa, uye kubuda; uye chikamu chehomogenization chinovimbisa kufanana kwekushisa kwekunyunguduka uye kugadzikana kwekuyerera. Zvichienderana nekusiyana kwezvinhu zvepurasitiki, screws dzinogona kuiswa mumhando nhatu: gradient mhando (inokodzera kupisa-sensitive zvinhu zvakaita sePVC), abrupt type (inokodzera polyolefins), uye general-chinangwa chemhando. Musiyano mukuru uri mukureba uye shear simba dhizaini yechikamu chekumanikidza. Makiyi ma paramita anosanganisira dhayamita, aspect ratio, uye compression reshiyo, iyo inofanirwa kufananidzwa kune zvinhu zvivakwa kuti uvandudze plasticizing mhedzisiro. Zvishandiso zvinowanzo shandiswa zvakakwirira-tembiricha uye zvinopfekwa-zvisingachinjiki zvakaita se38CrMoAla alloy uye tungsten carbide nickel{10}based alloy. Panguva yekushandiswa, yakamisikidzwa preheating process uye kuchenesa nguva dzose uye kugadzirisa kunodiwa kudzivirira screw slippage kana kukuvara kwemagetsi.
