Fitar filastik na bututu, tiyo da bututu tsari ne mai tsayin daka don juyar da albarkatun ɗanɗano na thermoplastic zuwa samfurin shekara mai ƙare ko kusa.Danyen kayan yana yawanci a cikin nau'in pellet na filastik ko foda.Juyawa yana faruwa ta hanyar samar da narkakken taro mai kama da juna a cikin mai fitar da kuma tilasta shi cikin matsin lamba ta hanyar extrusion die orifice wanda ke bayyana siffar sashin giciye samfurin.Abun da aka kafa, ko extrudate, ana sanyaya kuma an janye shi daga mashigar mutuwa a ƙimar sarrafawa.Sa'an nan za a iya raunata extrudate a kan spool, a yanke zuwa wani takamaiman tsayi, ko kuma a kai shi cikin wani tsari na cikin layi.
Ya bambanta da gyare-gyaren allura ko gyare-gyaren busa, waɗanda suke tafiyar matakai na cyclic, extrusion tsari ne mai tsayayye.Wannan siffa ta tsaye tana samar da wasu fa'idodi na musamman da ƙalubale azaman tsarin masana'antu.Kayayyakin da aka fitar suna da tsayi sosai kuma suna ci gaba, kuma suna da ɓangaren giciye wanda yawanci akai akai game da axis ko shugabanci na samarwa.Samfuran da aka ƙera allura abubuwa ne masu hankali tare da sassa daban-daban na giciye a cikin kowane axis.Gaskiyar cewa extrusion na bututu, bututu da bututu shine tsarin tsayayyen tsari za a tattauna a wurare da yawa na wannan labarin. Kalmomin da aka yi amfani da su don kwatanta bututu, bututu da bututu sun bambanta daga masana'antu zuwa masana'antu.
Kayan aiki
Yawancin abubuwan da ke cikin tsarin bututu, bututu, ko bututun bututu galibi ana rarraba su zuwa abubuwan da ke sama na extruder, mai fitar da kansa, da kuma waɗanda ke ƙasa na extruder.Abubuwan da ke sama sun haɗa da na'urorin sarrafa guduro don isar da albarkatun ƙasa zuwa ga mai fitar da ruwa, da na'urorin gyaran gyare-gyaren guduro waɗanda za su riga sun yi zafi da guduro, ko sarrafa danshi na guduro kafin ya shiga cikin maƙogwaro.Abubuwan da ke ƙasa sun haɗa da narkakken guduro tace ko mai canza allo, taron mutuƙar extrusion, quench ko vacuum sizing tank, kowane kayan auna samfur, mai saurin layin extrusion a cikin nau'in mai jan bel ko saitin nip, kuma a ƙarshe samfurin. na'urar yankewa ko kayan aikin iska.Akwai ƙarin hanyoyin aiwatar da extrusion waɗanda zasu ɗauki samfurin da aka fitar kai tsaye zuwa cikin wani tsari na cikin layi don ƙarin ƙwanƙwasa ƙarfafawa ko don ƙari na wasu sutura ko resin yadudduka.
Kayayyaki
Ana iya amfani da fasahohin cirewa don sarrafa yawancin thermoplastics da wasu robobin thermoset.The resins da aka fi extruded for tube, tiyo da bututu kayayyakin sun hada da high da kuma low yawa polyethylene, polypropylene, polyurethane, polystyrene, fluoropolymers, PTFE, polyester, kuma m da m PVC.Siffar da sau da yawa ke bambanta resin extruded daga resin da aka yi masa allura shine narke ɗanyen robobi a yanayin yanayin aiki na yau da kullun.Fitattun robobi sau da yawa suna da danko mafi girma, wanda ke ba da damar extrudate don riƙe siffar da mutun ya ba shi yayin da extrudate ke cikin matakan kashewa.Za a iya amfani da haɗe-haɗe na resins daban-daban don samun halaye na musamman na zahiri, na halitta, ko sinadarai.Ana iya amfani da ƙari da yawa yayin aikin extrusion don haɓaka halayen sarrafawa na polymer ko canza kaddarorin samfur.Irin waɗannan abubuwan ƙari sun haɗa da kayan shafawa, masu daidaita yanayin zafi, antioxidants, wakilai na radiopacifying, da masu launi.
Ma'aunin sarrafawa
Siffofin da ke da mahimmanci ga aikin extrusion sun yi kama da na hanyoyin gyaran allura.Yawan zafin jiki na guduro, matsa lamba na guduro, abun ciki na guduro, saurin dunƙule, da dunƙule amperage yawanci ana sarrafawa ko saka idanu don samar da narke iri ɗaya a ƙimar juzu'i mai sarrafawa.Zazzage zafin jiki da ƙimar abin da aka zana extrudate ana sarrafawa ko saka idanu don samar da girman samfurin sarrafawa.Ma'auni mai girma, ta amfani da hanyoyi daban-daban na ma'auni, ana iya ɗaukar extrudate kamar yadda aka samar.Ya bambanta da gyaran allura, extrusion na iya bambanta girman samfurin ƙarshe ba tare da canza kayan aikin mutu ba.Jurewar samar da extrusion gama gari ko daidaiton tsari ana gudanar da shi zuwa cikin kashi 1% na ƙimar ƙima.Kamar yadda waɗannan hanyoyin masana'antu suka ƙunshi tsayayyen yanayin yanayi, duk wani aiki da zai iya daidaita kowane siga ko yanayi yana da fa'ida ga tsarin.
Lokacin aikawa: Mayu-09-2017