Izindaba Zemboni

Miselela isikulufu se-extruder esisodwa lapho ukuguga okulinganiselwe noma ukulimala kuvimbela idizayini ekhona ukuthi yenze umsebenzi wayo. Sithuthukise lapho isikulufu sizwakala ngokuzenzakalelayo—noma kufanele sishintshwe—kodwa ushintsho olubhaliwe lwenhlaka, ikhwalithi yomkhiqizo noma okukhiphayo ludinga isu elihlukile lokuncibilika, ukuxutshwa, ukukhipha umoya noma ukumelana nokuguga. Ngaphambi kwanoma yisiphi isinqumo, hlola umphongolo kanye nawo wonke umugqa: isikulufu esisha asikwazi ukulungisa ukuphakelwa okungalungile, inhlaka emanzi noma ifa elinomkhawulo.

Isikulufu esingcono kakhulu se-extruder yileso esixazulula umsebenzi wokukhawulela womugqa wakho: ukuphakela, ukuncibilikisa, ukuxuba, ukukhipha umoya, noma ukupompa ngokumelene nokucindezela kokufa. Qala nge-resin kanye nefomu lokuphakelayo, bese uhlonza ibhodlela langempela ngaphambi kokukhetha umklamo ovamile, umgoqo, ukuxuba, noma okhishwa umoya. Isikulufu esithuthukisa umsebenzi owodwa singenza omunye ube mubi kakhulu, ngakho umshini, umgqomo, ukufa, nokuhlolwa kokwamukela kufanele kucaciswe ndawonye.

Uma i-resin yakho noma inhlanganisela ifika isilungele ukukhishwa futhi inkinga eyinhloko ukuncibilika okuzinzile nokulethwa kwengcindezi, qala ngesikulufu esisodwa esicaciswe kahle. Uma i-extruder kufanele ixube izithako ezihlukene, ifake impushana enzima noma i-filler feed, noma isekele ukungenisa umoya okuhileleke kakhudlwana, ihlole i-parallel twin-screw architecture; ngepayipi le-PVC noma amaphrofayili, faka inketho ye-conical twin-screw lapho inqubo yayo ifaneleka khona.

Unga-ode isikulufu se-granulation esisodwa esibonisa ngale esithombeni samachashazi amnyama sodwa. Rekhoda lapho kuvela khona izinkinga, hlola ukuphakelayo nendlela eya phansi komfula, qhathanisa nezimo zokusebenza, bese uhlanza futhi ulinganise isikulufu nomgqomo ngaphansi kwenqubo yokulungisa egunyaziwe yesitshalo. Isikulufu esisodwa se-granulation sika-Nanhaiya sigcizelela ukuguquka okushelelayo, ukuncibilika okulawulwayo kanye nokuqedwa kwendawo. Lezo zici zinendaba lapho ijometri yamanje noma indawo engaphezulu iwumthombo wezinto ezigciniwe noma ezonakele.

Cacisa isikulufu esisodwa esinegwebu se-PS ngokusho ifomu lokuphakelayo neresiphi, yini okufanele inyibilikiswe futhi ixutshwe ngaphambi kokunwetshwa kwegesi, umbhobho okhona kanye nezindawo zokuhlangana ze-die, kanye nemibandela yokwamukela elinganisekayo yomkhiqizo wegwebu. Isikulufu esisodwa esinegwebu se-PS sika-Nanhaiya sisebenzisa umqondo omude wokuklama we-L/D, isigaba sokuphakelayo esihloselwe ukuhambisa i-PS egaywe kabusha nama-nucleating agents, kanye nokukhetha kwesigaba se-Maddock noma isigaba sokuhlanganisa iphini. Azikho kulezo zici ezithatha indawo yedatha yakho yangempela yomugqa.

Ukuze uthenge i-granulation parallel twin screw, cacisa okuyisona sici sokuphakelayo kanye ne-pellet eqondiwe, ukuzungezisa komshini kanye nejometri yokubhanqa isikulufu, izindawo zokusebenza, ukulingana komgqomo kanye nokwakhiwa okugugayo okudingekile. Ikhasi lomkhiqizo we-granulation ka-Nanhaiya lifaka ku-38CrMoAlA, ukwelashwa kokushisa, i-nitriding, i-chrome ne-bimetal reference values, ngezinto ezingokwezifiso kanye nezinketho zokumisa ze-thermoplastics engakatholakali kanye ne-thermoplastic egaywe kabusha. Khetha ukwakhiwa okukodwa okuchaziwe kwezindawo ezi-odwe kunokuphatha lonke inani eliphezulu elisohlwini njengesici kuso sonke isikulufu. I-oda liphelele lapho liphinde lichaze amarekhodi okuhlola kanye nokuhlolwa kweresiphi yokukhiqiza. Ukugijima okufushane nge-resin elula akufakazeli ukuthi isikulufu sizokwenza i-pellet edingekayo kusukela ekuhlanganiseni okunzima okugaywe kabusha.