Ubukhulu becala senza ipaneli yesilingi yePVC,iipaneli zodonga, iifreyimu zecango zeWPC, iifestile, oomatshini be-trunking extruder.
Njengoko sonke sisazi, i-PVC (i-polyvinyl chloride) yiplastiki evakalelwa ngubushushu, kwaye ukuzinza kwayo kokukhanya kubi. Ngaphantsi kwesenzo sokushisa kunye nokukhanya, kulula ukuphendulwa kwe-HCl, okubizwa ngokuba yi-degradation. Isiphumo sokuthotywa kukuba amandla eemveliso zeplastiki ayancipha, ukuguqulwa kombala, kunye nemigca emnyama ibonakala, kwaye kwiimeko ezinzima, iimveliso zilahlekelwa ixabiso labo lokusetyenziswa. Izinto ezichaphazela ukuthotywa kwePVC ziquka ubume bepolymer, umgangatho wepolymer, inkqubo yokuzinzisa, ubushushu bokubumba kunye nokunye. Ngokutsho kwamava, ukutyheli kweeprofayile zePVC kubangelwa ikakhulu yintlama kwifa. Isizathu kukuba umjelo wokuhamba wokufa awunangqiqo okanye ukupolisha kwendawo kwijelo lokuhamba alilungile, kwaye kukho indawo yokumisa. Umgca omthubi weeprofayili zePVC uncamathisela kakhulu kumbhobho womatshini. Isizathu esona sizathu kukuba kukho i-angle efileyo phakathi kwamacwecwe e-sieve (okanye imikhono yenguqu), kwaye ukuhamba kwezinto akuhambanga. Ukuba umgca otyheli uthe nkqo kwiprofayile yePVC, izinto ezimileyo zisekuphumeni kokufa; ukuba umgca otyheli awuthe tye, ikakhulu kumkhono wenguqu. Ukuba umgca ophuzi ubuye ubonakale xa i-formula kunye nezinto eziluhlaza zingatshintshi, isizathu kufuneka sifumaneke ikakhulu kwisakhiwo somatshini, kwaye indawo yokuqala yokubola kufuneka ifunyanwe kwaye isuswe. Ukuba isizathu asikwazi ukufunyanwa kwisakhiwo somatshini, kufuneka kuthathelwe ingqalelo ukuba kukho ingxaki kwifomula okanye inkqubo. Amanyathelo okuthintela ukuthotywa aquka le miba ilandelayo:
(1) Lawula ngokungqongqo izalathisi zobugcisa zemathiriyeli ekrwada, kwaye usebenzise imathiriyeli ekrwada esemgangathweni;
(2) Ukuqulunqa iimeko ezifanelekileyo zokubumba, phantsi kwazo izinto zePVC azilulanga ukuthotywa;
(3) Izixhobo zokubumba kunye nokubumba kufuneka zenziwe kakuhle, kwaye ii-engile ezifileyo okanye izikhewu ezinokuthi zibekho kwindawo yokudibanisa phakathi kwezixhobo kunye nezixhobo kufuneka zipheliswe; umjelo wokuhamba kufuneka ulungelelaniswe kwaye ulungele ubude; isixhobo sokufudumeza kufuneka siphuculwe, ubuntununtunu besixhobo sokubonisa ubushushu kunye nokusebenza kakuhle kwenkqubo yokupholisa kufuneka kuphuculwe.
ukugoba deformation
Ukugoba kunye nokuguqulwa kweeprofayili zePVC yingxaki eqhelekileyo kwinkqubo yokukhupha. Izizathu zezi: ukukhutshwa okungalinganiyo kwidiyiti; ukupholisa okunganeleyo kwempahla ngexesha lokupholisa kunye nokusetha, kunye nokungahambelani kwe-post-shrinkage; izixhobo kunye nezinye izinto
Ukugxila kunye nomgangatho womgca wonke we-extruder zizinto ezifunekayo ekusombululeni i-deformation yokugoba kwiiprofayili ze-PVC. Ngoko ke, ukugxila kunye nomgangatho we-extruder, die, calibrating die, itanki yamanzi, njl. Phakathi kwazo, ukuqinisekisa ukukhutshwa okufanayo kwefa sisitshixo sokusombulula ukugotywa kweeprofayili zePVC. Ukufa kufuneka kuhlanganiswe ngokucophelela ngaphambi kokuqala umatshini, kwaye izikhewu phakathi kwendawo nganye kufuneka zihambelane. Lungisa ubushushu bokufa. Ukuba ulungelelwaniso aluvumelekanga, idigri yeplastiki yezinto eziphathekayo kufuneka yandiswe ngokufanelekileyo. Ulungelelwaniso oluncedisayo Ukulungelelanisa iqondo le-vacuum kunye nenkqubo yokupholisa ye-mold yokumisa yindlela efunekayo yokusombulula ukuguqulwa kweeprofayili ze-PVC. Ubungakanani bamanzi okupholisa kwicala leprofayili ethwele uxinzelelo lwe-tensile kufuneka lwandiswe; indlela ye-mechanical offset center isetyenziselwa ukulungelelanisa, oko kukuthi, ukulungelelanisa ngelixa uvelisa Iibholiti zokumisa phakathi kwe-calibrating die zihlengahlengiswa kancinane ngokwendlela yokugoba yeprofayili (isilumkiso kufuneka sisetyenziswe xa usebenzisa le ndlela; kwaye isixa sohlengahlengiso akufanele sibe sikhulu kakhulu). Ukunika ingqalelo ekugcinweni kwesikhunta yindlela efanelekileyo yokukhusela. Kufuneka ubeke ingqalelo ngokusondeleyo kumgangatho wokusebenza kwesikhunta, kwaye ugcine kwaye ugcine isikhunta nangaliphi na ixesha ngokwemeko yangempela.
Ngokuthatha la manyathelo angentla, ukugoba ukugoba kweprofayili kunokupheliswa, kwaye i-extruder inokuqinisekiswa ukuba ivelise iiprofayili ezikumgangatho ophezulu wePVC ngokuzinzileyo kwaye ngokuqhelekileyo.
Amandla empembelelo yobushushu obuphantsi
Izinto ezichaphazela amandla efuthe eliphantsi lobushushu beeprofayili zePVC ziquka ifomula, isakhiwo secandelo leprofayili, isikhunta, iqondo leplastiki, iimeko zokuvavanya, njl.
(1) Ifomula
Okwangoku, i-CPE isetyenziswa ngokubanzi njengesilungisi sempembelelo. Phakathi kwabo, i-CPE eneqhezu elikhulu le-36% ye-chlorine inempembelelo engcono yokuguqulwa kwi-PVC, kwaye i-dosage ngokubanzi i-8-12 iinxalenye ngobunzima. I-Elasticity kunye nokuhambelana nePVC.
(2) Isakhiwo secandelo leprofayili
Iiprofayili zePVC ezikumgangatho ophezulu zinesakhiwo esinqamlezileyo esilungileyo. Ngokuqhelekileyo, isakhiwo esine-cross-section encinci singcono kunesakhiwo esine-cross-section enkulu, kwaye indawo yokuqiniswa kwangaphakathi kwi-cross-section kufuneka ibekwe ngokufanelekileyo. Ukwandisa ubuninzi bembambo yangaphakathi kunye nokwamkela inguqu ye-arc ejikelezayo ekudibaneni phakathi kwembambo yangaphakathi kunye nodonga zonke ziluncedo ekuphuculeni amandla empembelelo yeqondo lokushisa eliphantsi.
(3) Ngundo
Impembelelo yesikhunta kumandla empembelelo yeqondo lokushisa eliphantsi libonakaliswa ikakhulu kwixinzelelo lokunyibilika kunye nokulawula uxinzelelo ngexesha lokupholisa. Nje ukuba iresiphi imiselwe, uxinzelelo lwenyibilika lunxulumene ikakhulu nokufa. Iiprofayili eziphuma kwi-die ziya kuvelisa ukuhanjiswa koxinzelelo olwahlukeneyo ngeendlela ezahlukeneyo zokupholisa. Amandla empembelelo yobushushu obuphantsi beeprofayili ze-PVC alibi kakhulu apho uxinzelelo lugxininiswe. Xa iiprofayili ze-PVC ziphantsi kokupholisa ngokukhawuleza, ziba noxinzelelo oluphezulu. Ke ngoko, ukubekwa komjelo wamanzi okupholisa umngundo wokulinganisa kubaluleke kakhulu. Ubushushu bamanzi bulawulwa ngokubanzi kwi-14°C-16°C. Indlela yokupholisa ecothayo iluncedo ekuphuculeni amandla empembelelo yobushushu obuphantsi beeprofayili zePVC.
Ukuqinisekisa imeko entle ngundo, ukucoca kufa rhoqo ukuphepha ukungcola ukuvala kufa ngenxa yemveliso eqhubekayo ixesha elide, okubangela imveliso kuncitshisiwe kunye iimbambo ezibhityileyo ezixhasayo, nto leyo echaphazela amandla ifuthe eliphantsi lobushushu. Ukucocwa rhoqo kwe-mold calibrating kunokuqinisekisa i-vacuum eyaneleyo yokulinganisa kunye nokuhamba kwamanzi kwi-mold yokulinganisa ukuqinisekisa ukupholisa okwaneleyo ngexesha lenkqubo yokuvelisa iphrofayili, ukunciphisa iziphene kunye nokunciphisa uxinzelelo lwangaphakathi.
(4) Iqondo leplastiki
Inani elikhulu lophando kunye neziphumo zovavanyo zibonisa ukuba ixabiso elingcono kakhulu lefuthe eliphantsi lobushushu befuthe leeprofayili ze-PVC lifunyenwe xa i-degree of plasticization i-60% -70%. Amava abonisa ukuba "ubushushu obuphezulu kunye nesantya esiphantsi" kunye "nobushushu obuphantsi kunye nesantya esiphezulu" sinokufumana iqondo elifanayo leplastiki. Nangona kunjalo, ubushushu obuphantsi kunye nesantya esiphezulu kufuneka kukhethwe kwimveliso, kuba ukusetyenziswa kwamandla okufudumeza kungancitshiswa kwiqondo lokushisa eliphantsi, kunye nokusebenza kakuhle kwemveliso kunokuphuculwa ngesantya esiphezulu, kwaye umphumo wokucheba uyabonakala xa i-twin-screw extruder ikhutshwe. ngesantya esiphezulu.
(5) Iimeko zovavanyo
I-GB/T8814-2004 inemigaqo engqongqo yovavanyo lwempembelelo yobushushu obuphantsi, njengobude beprofayili, ubunzima behamile yokuwisa, iradiyasi ye-hammerhead, iimeko zokukhenkceza iisampulu, imeko yovavanyo, njl. ilandelwe ngokungqongqo.
Phakathi kwazo: "impembelelo yobunzima obuwayo kumbindi wesampulu" kufuneka iqondwe ngokuthi "ukwenza impembelelo yobunzima obuwayo kumbindi womgodi wesampulu", isiphumo sovavanyo esinjalo sinokwenyani.
Amanyathelo okuphucula ukusebenza kwempembelelo yobushushu obuphantsi ngala alandelayo:
1. Khangela ngokuthe ngqo umgangatho wezinto ezisetyenzisiweyo, kwaye ubeke ingqalelo ngokucokisekileyo kwimeko yempahla yokukhutshwa kwe-die discharge kunye ne-vacuum port. Ukukhutshwa kwefa kufuneka kube nombala ofanayo, ube ne-gloss ethile, kwaye ukukhutshwa kufuneka kube yinto efanayo. Kufuneka ibe ne-elasticity elungileyo xa ixova ngesandla. Izinto ezikwizibuko le-vacuum ye-injini ephambili zikwimeko "yentsalela yebhontshisi", kwaye ayinakukhupha ukukhanya xa ifakwe iplastiki ekuqaleni. Iiparamitha ezifana neyona injini yangoku kunye noxinzelelo lwentloko kufuneka luzinzile.
2.Umgangatho wolawulo lwenkqubo ukuqinisekisa ukusebenza kweplastiki. Ulawulo lobushushu kufuneka lube yinkqubo "yesitya". Ukutshintsha kweqondo lokushisa ukusuka kwindawo yokuqala ye-extruder ukuya entloko kufuneka kube luhlobo "lwesitya". Tshintshela "kwibhalansi yangaphakathi nangaphandle" ukuqinisekisa ukuba izinto eziphathekayo zifudumala ngokulinganayo. Kwimeko yefomula efanayo, inkqubo ye-extrusion ayifanele iguqulwe kakhulu.
Ixesha lokuposa: Jun-07-2023
