I-PVC yokufakwa kwamapayipi
I-PVC (i-polyvinyl chloride) iyi-polymer ye-vinyl.Ngaphansi kwesimo esifanele, ivimbela kancane i-chlorine ukuthi isabelane ne-hydrogen.Kwenza kanjalo ukwakha i-hydrochloric acid (HCl).Le ngxube ine-asidi futhi ingabangela ukugqwala.Ngakho naphezu kwezinto zayo eziningi ezifiselekayo, i-PVC iyagqwala.Lokhu kubangela izinselelo ezithile ekucutshungulweni nasekusetshenzisweni kwayo.I-PVC inokumelana okuhle kakhulu namanzi kanye noketshezi oluningi lwansuku zonke.Iyancibilika ku-tetrahydrofuran, i-cyclohexane, ne-cyclopentanone.Ngakho-ke uma usebenzisa okokufakwa kwe-PVC cabangela uhlobo loketshezi olungena emseleni.
Ukuze uhlangabezane nezidingo ezahlukene, amapayipi adinga ukugoba ngezindlela ezahlukene nama-engeli.Lokhu kungaba ukuphambukisa konke ukugeleza noma ingxenye yokugeleza.Ukufakwa kwamapayipi kujwayele ukuxhuma amapayipi ngama-engeli ahlukene.Bangakwazi ukuxhuma amapayipi angu-2 kuya kwangu-4 ndawonye.Amapayipi nokufakwa kwawo asetshenziswa ngezindlela eziningi.Izibonelo ukuthuthwa kwendle, ukuphakelwa kwamanzi, nokunisela.Ukwethulwa kwamapayipi e-PVC kwaba ushintsho olukhulu ekhaya nasembonini.Namuhla amakhaya amaningi nezimboni ziyashintsha kusuka kumapayipi ensimbi kuya kumapayipi e-PVC.Amapayipi e-PVC ahlala isikhathi eside.Azigqwali futhi zingamelana nezingcindezi zokugeleza.Ngenxa yezinqubo ezinkulu zokukhiqiza ezifana nokubumba umjovo, ishibhile.Ngezansi kunezibonelo zokufakwa kwamapayipi abunjwe ngomjovo.
Indlela yokufakwa kwamapayipi e-PVC abunjwa ngayo umjovo
Ukufakwa kwe-PVC kwenziwa ngokubunjwa komjovo wengcindezi ephezulu.Inqubo yokubumba umjovo iqala nge-PVC ngendlela yama-granules noma ama-pellets.Ngokuphambene ne-extrusion eqhubekayo, ukubumba kuyinqubo ye-cyclic ephindaphindayo, lapho "ukudubula" kwezinto kulethwa kusikhunta emjikelezweni ngamunye.
Impahla ye-PVC, ifomu elihlanganisiwe eliyimbudumbudu, amandla adonsela phansi asuka ku-hopper etholakala ngaphezu kweyunithi yomjovo, angene emgqonyeni ofaka isikulufu esiphindaphindayo.Umphongolo ukhokhiswa inani elidingekayo lepulasitiki ngesikulufu esizungezisayo futhi sidlulisele okokusebenza ngaphambili komgqomo.Indawo yesikulufu isethwe “kusayizi wokudubula” onqunywe kusengaphambili.Phakathi nalesi senzo, ingcindezi nokushisa "i-plasticise" impahla, manje esesimweni sayo esincibilikile, ilindele ukujova esikhunjeni.
Konke lokhu kwenzeka phakathi nomjikelezo wokupholisa wesithombe esidlule.Ngemuva kwesikhathi esibekiwe, isikhunta sizovuleka futhi ukufakwa okubunjiwe okuqediwe kuzokhishwa esikhunjeni.
Isikhunta sibe sesivala futhi ipulasitiki encibilikisiwe engaphambili komgqomo ijovwa ngaphansi kwengcindezi ephezulu ngesikulufu esisebenza njenge-plunger.Ipulasitiki ingena esikhunjeni ukuze yakhe ukufakwa okulandelayo.
Ngemuva komjovo, ukushajwa kabusha kuyaqala ngenkathi okokufaka okubunjiwe kuqhubeka emjikelezweni wakho wokupholisa.
Mayelana ne-PVC injection Molding
Njengoba kunikezwe izakhiwo ze-PVC izici ezithile zibalulekile ekubumbeni umjovo wazo.Ukubumba umjovo we-PVC kudinga ukuthi ivezwe emazingeni okushisa aphezulu.Uma kubhekwa izakhiwo zamakhemikhali nezomzimba ze-PVC, lokhu kungase kubeke ubunzima enqubweni.Okulandelayo kukhona okucatshangelwayo ekubunjweni komjovo wokufakwa kwamapayipi e-PVC.
I-Mold Material
Inketho engcono kakhulu yokwenza isikhunta se-PVC insimbi engagqwali elwa nokugqwala.Lokhu kufanele kube insimbi eqinile epholishwe kahle.Kukhona amandla aphezulu okukhishwa kwe-HCl ngesikhathi sokukhiqizwa kokufakwa kwamapayipi e-PVC.Lokhu kunjalo nakakhulu nge-PVC esesimweni esincibilikisiwe.Noma iyiphi i-chlorine esesimweni segesi kungenzeka iminyene lapho ishaya isikhunta.Lokhu kuveza isikhunta ekugqwaleni.Nakuba kuzokwenzeka, ukusebenzisa insimbi yezinga eliphezulu kunciphisa amathuba.Lokhu kwandisa impilo ewusizo yesikhunta.Ngakho-ke ungahambi ezishibhile uma kuziwa ekukhetheni isikhunta impahla.Ngokwakhiwa komjovo wepayipi le-PVC, hamba uthole insimbi engcono kakhulu ongayithola.
I-Mold Design yokufakwa kwepayipi le-PVC
Ukuklama isikhunta sobumo obuqinile obuyinkimbinkimbi kuyinkimbinkimbi.Ukuklama isikhunta sokufakwa kwamapayipi e-PVC kuthatha inkimbinkimbi phezulu.I-mold cavity ayiyona indlela elula yokusika isimo esiqinile namasango.Isikhunta siyinhlangano eyinkimbinkimbi.Kudinga uchwepheshe ekwakhiweni kwesikhunta kanye nokwakhiwa kwesikhunta.Ukubheka ukuma kokufakwa kwepayipi.Thatha isibonelo ukufakwa kwepayipi lendololwane.Umhlangano wesikhunta uklanywa ngendlela evumela ukugcwaliswa komzimba wepayipi.Kodwa lokhu kwenzeka ngaphandle kokugcwalisa indawo engenalutho.Lokhu kwenziwa ngokucabangela ukukhishwa nokukhululwa komkhiqizo.Imiklamo evamile idinga isikhunta esinezingxenye eziningi.Lokhu kungaba izingxenye ezi-4 zesikhunta.Lokhu akufani nezakhiwo eziqinile ezilula ezingenziwa ngezibunjwa ezinezingxenye ezimbili.Ngakho-ke ukufakwa kwamapayipi e-PVC funa onjiniyela besikhunta abanolwazi ngalolu hlobo lwesikhunta.Ngezansi kunesibonelo sesikhunta sepayipi le-PVC elifaka ipayipi.
Isikhathi sokuthumela: May-25-2023
