Kwizakhiwo zanamhlanje, ubunjineli bukamasipala, kunye namacandelo amaninzi emizi-mveliso, iipayipi zePVC zidlala indima ebaluleke kakhulu. Ukusetyenziswa kwazo ngokubanzi kuxhamla ekusebenzeni kwazo kakuhle kunye nenkqubo yokuvelisa evuthiweyo. Ngoko ke, yintoni kanye kanye inkqubo yokuvelisa iipayipi zePVC?
Iipayipi zePVC zenziwa ngenkqubo yokukhupha izinto ezikrwada zePVC kwaye zihlala zilandela iinkqubo eziqhelekileyo zokusebenza kweenkqubo zokukhupha iipayipi ezisemgangathweni: Okokuqala, iipellets okanye umgubo wezinto ezikrwada zifakwa kwi-I-extruder ye-PVC enamawele amabiniEmva koko, ukunyibilikisa nokufudumeza kwenziwa kwiindawo ezininzi zokukhupha izinto. Le nkqubo ibonakala ilula xa ijongwa, kodwa eneneni, ibandakanya ubuchwepheshe obuntsonkothileyo kunye namakhonkco enkqubo, kunye nothotho lwezixhobo zobungcali kunye nemigca yemveliso, phakathi kwazo kukho ezinye ezimele ishishini laseTshayina lokukhupha izinto ngeplastiki.
Kumgca wokuvelisa imibhobho yePVC, i-extruder ngokuqinisekileyo sisixhobo esiphambili. I-extruder yenza umsebenzi obalulekileyo wokuguqula izinto eziluhlaza zibe yimibhobho eyenziweyo kuyo yonke inkqubo yokuvelisa. Ukuthatha umzekelo kushishino lweplastiki lwaseTshayina, amashishini amaninzi ebesoloko ehlola kwaye esenza izinto ezintsha kweli candelo. Umzekelo, uBlesson, umenzi we-extruder odumileyo waseTshayina, unamava amaninzi kunye nempumelelo ebalaseleyo kuphando, uphuhliso, kunye nokuveliswa kwe-extruder.Umatshini wokukhupha izinto eBlessonUmzi-mveliso usebenzisa ubuchwepheshe kunye neenkqubo eziphambili, kwaye izixhobo zokukhupha eziveliswayo zineengenelo ezibalulekileyo ngokubhekiselele ekuchanekeni, uzinzo, kunye nokusebenza kakuhle kwemveliso, zibonelela ngesiqinisekiso esiqinileyo semveliso esemgangathweni ophezulu yeepayipi zePVC.
Xa i-PVC twin screw extruder isebenza, isakhiwo sayo se-screw siyilwe ngobuchule. Ezi screw zimbini ziyasebenzisana ukuze zivumele izinto eziluhlaza ukuba zihambe phambili ngokulinganayo phantsi kokutyhalwa kwezikrufu kwaye zigqibezele kancinci iinkqubo zokufudumeza nokunyibilika kwiindawo ezininzi. Kwindawo yokuqala, izinto eziluhlaza zihlala zitshiswa ngaphambi kokuba ziqale ukwenza iipellets okanye umgubo ziqale ukuthamba, nto leyo eququzelela ukucutshungulwa okulandelayo. Njengoko izinto eziluhlaza zihanjiswa zizikrufu ziye kwindawo yesibini, ubushushu buya kunyuka ngakumbi. Ngeli xesha, i-PVC iqala ukunyibilika kancinci kwaye yenze ukunyibilika okunokunyibilika okuthile. Kule nkqubo, inkqubo yokufudumeza ye-extruder idlala indima ebalulekileyo. Ulawulo oluchanekileyo lobushushu lunokuqinisekisa ukuba izinto eziluhlaza ze-PVC zinyibilika kubushushu obufanelekileyo, kuthintelwe impembelelo kumgangatho wemibhobho ngenxa yobushushu obuphezulu kakhulu okanye obuphantsi. Umzekelo, ukuba ubushushu buphezulu kakhulu, bunokubangela ukubola kwe-PVC, okubangela iingxaki ezifana nokutshintsha kombala kunye nokuqhekeka kwemibhobho; ngelixa ukuba ubushushu buphantsi kakhulu, ukunyibilika akuyi kwanela, kwaye isiphumo sokwakheka kwemibhobho siya kuba sibi, kunye neziphene ezinokwenzeka ezifana nomphezulu ongalinganiyo kunye nesakhiwo sangaphakathi esingalinganiyo.
Emva kokuba izinto eziluhlaza zePVC zinyibilikisiwe kwi-extruder, zingena kwinqanaba lokwakheka. Kweli nqanaba, i-PVC melt ikhutshwa ngesikhunta esithile ukuze yenze imo yokuqala yombhobho. Uyilo kunye nokuveliswa kweumngundozinempembelelo enkulu kumgangatho wokugqibela wombhobho wePVC. Iinkuni ezikumgangatho ophezulu zinokuqinisekisa ukuchaneka kobukhulu, ukufana kobukhulu bodonga, kunye nokuguda komphezulu wemibhobho. Njengomvelisi we-extruder waseTshayina ochwephesha, uBlesson utyale imali eninzi yophando kunye nezixhobo zophuhliso kwiumngundouyilo kunye nokuveliswa, kunye neenkuni eziveliswayo zinokuhlangabezana neemfuno zemveliso yeepayipi zePVC zeenkcukacha ezahlukeneyo kunye neemeko ezahlukeneyo zokusetyenziswa.
Emva kokuba imibhobho ikhutshiwe, kufuneka ipholiswe kwaye ilinganiswe ngobukhulu. Le nkqubo idla ngokufezekiswa ngeetanki zamanzi okupholisa okanye izixhobo zokupholisa umoya. Amanzi okupholisa kwiitanki yamanzi okupholisakuya kususa ubushushu beepayipi, kuzenze ziphole kwaye zibe nobukhulu obukhawulezayo. Ulawulo lwesantya sokupholisa nalo lubalulekile. Ukuba isantya sokupholisa sikhawuleza kakhulu, sinokubangela uxinzelelo lwangaphakathi kwiipayipi, sichaphazele iimpawu zazo zoomatshini; ngelixa ukuba isantya sokupholisa sicotha kakhulu, siya kunciphisa ukusebenza kakuhle kwemveliso kwaye sinokubangela ukuba iipayipi zijike ngexesha lenkqubo yokupholisa.
Ukongeza kwezi khonkco ziphambili zingasentla, inkqubo yokuvelisa imibhobho yePVC ikwabandakanya neenkqubo ezifanaiyunithi yokuthuthakwayeukusika. Iyunithi yokuthutha inoxanduva lokutsala imibhobho ekhutshiweyo phambili ngesantya esingaguqukiyo ukuqinisekisa ukuqhubeka nokuzinza kwemveliso yemibhobho. Isantya seyunithi yokuthutha kufuneka sihambelane nesantya sokukhupha. Ukuba isantya sokudonsa sikhawuleza kakhulu, imibhobho iya kolulwa kwaye ibe ncinci; ngelixa ukuba isantya sicotha kakhulu, imibhobho iya kuqokelelana, nto leyo echaphazela ukusebenza kakuhle kwemveliso. Isixhobo sokusika sinqumla imibhobho ibe ziimveliso ezigqityiweyo ngokobude obumiselweyo. Kwezinye imigca yemveliso enezinga eliphezulu lokuzenzekelayo, inkqubo yokusika inokufikelela ekusikeni okuchanekileyo okuphezulu, inciphise iimpazamo ezibangelwa kukusebenza ngesandla.
Kwishishini lokukhutshelwa kwemibhobho yeplastiki eTshayina, abavelisi bezinto zokukhutshelwa kweplastiki baseTshayina abanjengoBlesson bahlala bekhuthaza uphuhliso lweshishini. Abagcini nje ngokusungula izinto ezintsha kubuchwepheshe bokwenza izixhobo kodwa benza uphando olunzulu malunga noyilo olupheleleyo kunye nokulungiswa kwemigca yemveliso. Umzekelo, ngokusebenzisa ukulungiswa okudibeneyo kwe-extruder, i-extrusion die, inkqubo yokupholisa, iyunithi yokuthutha, kunye ne-cutter, ukusebenza kakuhle kwemveliso kunye nomgangatho wemveliso yonke.Umgca wemveliso yombhobho wePVCziphuculwe. Okwangoku, ngotshintsho oluqhubekayo kwimfuno yemarike, aba bavelisi bakwaphanda kwaye baphuhlisa iintlobo ezintsha zee-extruders kunye nemigca yemveliso ukuze bahlangabezane nemigangatho ephezulu yemveliso kunye neemfuno zesicelo ezintsonkothileyo.
Ukususela ekukhetheni nasekuphatheni izinto eziluhlaza ukuya ekunyibilikeni nasekufudumaleni kwi-extruder, kuze kube kwiinkqubo zokwenza, ukupholisa, ukutsala, kunye nokusika, inkqubo yokuvelisa imibhobho ye-PVC yinkqubo entsonkothileyo nebuthathaka. Yonke ikhonkco ifuna ulawulo olungqongqo kunye nolawulo, kwaye nayiphi na impazamo encinci inokuchaphazela umgangatho wemveliso yokugqibela. Ngenxa yemizamo yamashishini amaninzi kunye neengcali kushishino lwe-extrusion yeplastiki yaseTshayina, ingakumbi iinkokheli zoshishino ezifana neBlesson, ngokuvelisa ubuchwepheshe obuqhubekayo kunye nokuphucula inkqubo, imveliso yemibhobho ye-PVC yaseTshayina ikwafumene ukhuphiswano oluqinileyo kwimarike yamazwe ngamazwe. Nokuba kukwakha iinkqubo zokubonelela ngamanzi kunye nemibhobho yamanzi, ukunkcenkceshela kwezolimo, okanye kumacandelo emizi-mveliso afana namandla eekhemikhali kunye nombane, imibhobho ye-PVC eveliswa eTshayina ifumene udumo olubanzi ngomgangatho wayo othembekileyo. Ngenkqubela phambili eqhubekayo yesayensi kunye netekhnoloji, kukholelwa ukuba inkqubo yokuvelisa imibhobho ye-PVC iya kuqhubeka nophuhliso kwaye iphucuke, inegalelo elingakumbi kulwakhiwo lweziseko zophuhliso zehlabathi kunye nophuhliso lwemizi-mveliso.
Ngokuphathelele ukhuseleko lokusingqongileyo, ngokugxininisa ngakumbi kukhuseleko lokusingqongileyo kuluntu, amashishini okuvelisa imibhobho yePVC nawo ahlala ehlola iinkqubo zemveliso eluhlaza. Kwelinye icala, ekukhetheni izinto eziluhlaza, kukho umkhwa wokusebenzisa izixhobo zePVC ezinobuhlobo nokusingqongileyo nokunciphisa ukusetyenziswa kwezongezo eziyingozi kwindalo. Kwelinye icala, kwinkqubo yemveliso, ngokuphucula izixhobo kunye neenkqubo, ukusetyenziswa kwamandla kunye nokukhutshwa kwenkunkuma kuyancitshiswa. Umzekelo, abanye abathuthi abaphambili basebenzisa iimoto ezonga amandla kunye neenkqubo zokufudumeza, ezinokunciphisa ngempumelelo ukusetyenziswa kwamandla ngexesha lenkqubo yemveliso. Okwangoku, kwinkunkuma eveliswa ngexesha lenkqubo yemveliso, amashishini akwahlola iindlela zokuphinda kusetyenziswe kunye nokuphinda kusetyenziswe inkunkuma ibe zizinto eziluhlaza ezinokusetyenziswa kwakhona ukuze kusetyenziswe kwakhona izixhobo.
Ngokwembono yeendlela zophuhliso lweshishini, inkqubo yokuvelisa imibhobho ye-PVC iya kuphuhliswa ngokweenkalo zobukrelekrele, ukuzenzekela, ukusebenza kakuhle, kunye nokuhlaziya indalo kwixesha elizayo. Izixhobo zokuvelisa ezikrelekrele ziya kukwazi ukufezekisa ukuzixilonga nokuzilungisa, ukuphucula ngakumbi ukusebenza kakuhle kwemveliso kunye nokuzinza komgangatho wemveliso. Imigca yemveliso ezenzekelayo iya kunciphisa ukusebenza ngesandla, inciphise iindleko zomsebenzi, kwaye iphucule ukuchaneka kwemveliso. Iinkqubo zemveliso ezisebenzayo ziya kunciphisa umjikelo wemveliso kwaye zonyuse ukhuphiswano lwemarike lwamashishini. Ingcamango yemveliso eluhlaza iya kudlula kuyo yonke inkqubo yemveliso, yenze imveliso yemibhobho ye-PVC ibe nobuhlobo nokusingqongileyo kwaye ihlale ixesha elide.
Ukuqukumbela, inkqubo yokuvelisa imibhobho yePVC yinkqubo entsonkothileyo equka iinkalo ezahlukeneyo kunye nobuchwepheshe. Ukususela kwizinto eziluhlaza ukuya kwiimveliso ezigqityiweyo, yonke ikhonkco ibonakalisa ubulumko kunye nemizamo yamashishini amaninzi kunye neengcali kushishino lokukhupha imibhobho yeplastiki. E-China, abavelisi be-extruder baseTshayina abamelwe yiBlesson bahlala bevelisa izinto ezintsha kwaye bephuhlisa kweli candelo, elingakhuthazi nje kuphela inkqubela phambili yenkqubo yokuvelisa imibhobho yePVC yaseTshayina kodwa likwafaka amandla amatsha kushishino lwemibhobho yeplastiki yehlabathi. Ngophuhliso oluqhubekayo lweshishini, sinesizathu sokukholelwa ukuba imibhobho yePVC iya kuqhubeka nokudlala indima ebalulekileyo kulwakhiwo lweziseko zophuhliso kunye namacandelo emizi-mveliso kwixesha elizayo, kwaye iya kufezekisa impumelelo enkulu ngokubhekiselele kumgangatho, ukusebenza, kunye nokukhuselwa kwendalo.
Ixesha leposi: Novemba-27-2024