Isu tinonyanya kuita PVC ceiling panel,madziro emadziro, WPC mikova mafuremu, mahwindo, trunking extruder machines.
Sezvatinoziva tose, PVC (polyvinyl chloride) ipurasitiki inonzwa kupisa, uye kugadzikana kwayo kwechiedza kwakashata.Pasi pechiito chekupisa uye chiedza, zviri nyore ku-de-HCl reaction, iyo inowanzonzi degradation.Mhedzisiro yekudzikisira ndeyekuti kusimba kwezvigadzirwa zvepurasitiki kuderera, kushanduka, uye mitsara mitema inooneka, uye mumatambudziko akaomarara, zvigadzirwa zvinorasikirwa nekukosha kwekushandisa.Zvinhu zvinokanganisa kuparara kwePVC zvinosanganisira chimiro chepolymer, mhando yepolymer, kudzikamisa system, tembiricha yekuumbwa uye zvichingodaro.Zvinoenderana neruzivo, kutsvuka kwePVC profiles kunonyanya kukonzerwa nekunamira pakufa.Chikonzero ndechekuti nzira yekuyerera yefa haina musoro kana kupenya kwenzvimbo mugero rekuyerera hakuna kunaka, uye kune nzvimbo yekumira.Mutsara weyero wePVC profiles unonyanya kunamira mubhodhoro remuchina.Chikonzero chikuru ndechekuti kune kona yakafa pakati pesefa mahwendefa (kana shanduko sleeves), uye kuyerera kwezvinhu hakuna kutsetseka.Kana iyo yero mutsara wakatwasuka paPVC mbiri, iyo inomira zvinhu iri pakubuda kwefa;kana mutsara weyero usina kutwasuka, unonyanya kuve pakuchinja sleeve.Kana iyo yero mutsara ichionekwawo kana iyo formula uye yakasvibira zvinhu zvisina kuchinjika, chikonzero chinofanira kunyanya kuwanikwa kubva kune mechanical chimiro, uye kutanga kwekuora kunofanira kuwanikwa uye kubviswa.Kana chikonzero chacho chisingakwanisi kuwanikwa kubva kune mechanical structure, inofanira kuonekwa kuti pane dambudziko mukugadzirisa kana maitiro.Matanho ekudzivirira kudzikisirwa anosanganisira zvinotevera zvinhu:
(1) Nyatsodzora tekinoroji zviratidzo zvezvakagadzirwa, uye shandisa zvinokwanisa mbishi zvinhu;
(2) Gadzira inonzwisisika kuumbwa muitiro mamiriro, pasi iyo PVC zvinhu hazvisi nyore kuderedza;
(3) Midziyo yekuumba uye molds inofanirwa kuve yakanyatso kurongeka, uye makona akafa kana maburi anogona kunge aripo pane yekuonana pamusoro pemidziyo uye zvinhu zvinofanirwa kubviswa;nzira yekuyerera inofanira kurongeka uye yakakodzera pakureba;mudziyo wekudziya unofanirwa kuvandudzwa, kunzwisiswa kweiyo tembiricha yekuratidzira mudziyo uye kugona kweinotonhora system kunofanirwa kuvandudzwa.
bending deformation
Kupeta uye deformation yePVC profiles idambudziko rakajairika mune extrusion maitiro.Zvikonzero ndezvi: kusaenzana kubuda kubva mufa;kusakwana kutonhora kwezvinhu panguva yekutonhora nekugadzirisa, uye kusagadzikana kwemashure-shrinkage;midziyo nezvimwe zvinhu
Iko concentricity uye kuenzana kwemutsara wese weiyo extruder ndizvo zvinodikanwa pakugadzirisa kubhenda deformation yePVC profiles.Naizvozvo, iyo concentricity uye kuenzana kweiyo extruder, kufa, calibrating kufa, tangi remvura, nezvimwe zvinofanirwa kugadziriswa pese painotsiviwa mold.Pakati pavo, kuve nechokwadi chekubuda kweyunifomu yefa ndiyo kiyi yekugadzirisa kukotama kwePVC profiles.Iyo inofa inofanirwa kuunganidzwa zvakanaka isati yatanga muchina, uye maburi pakati pechikamu chimwe nechimwe anofanira kuenderana.Rongedza tembiricha yekufa.Kana iyo gadziriso isiriyo, iyo dhigirii yeplasticization yezvinhu inofanira kuwedzerwa zvakakodzera.Kugadziriswa kwekubatsira Kugadzirisa iyo vacuum degree uye kutonhora sisitimu yekuseta mold inzira inodiwa yekugadzirisa deformation yePVC profiles.Kuwanda kwemvura inotonhorera padivi peprofile inotakura kushushikana kunofanirwa kuwedzerwa;iyo nzira ye mechanical offset centre inoshandiswa kugadzirisa, ndiko kuti, kugadzirisa paunenge uchigadzira Mabhoti ekumisa pakati pe calibrating die anodzokororwa zvishoma nezvishoma zvichienderana nekukombama kweprofile (kuchenjerera kunofanira kushandiswa paunenge uchishandisa nzira iyi, uye chiyero chekugadzirisa hachifaniri kunge chakakura).Kuteerera kuchengetwa kwe mold inzira yakanaka yekudzivirira.Iwe unofanirwa kunyatsoteerera kuhutano hwekushanda kwehuni, uye kuchengetedza uye kuchengetedza mold chero nguva maererano nemamiriro chaiwo.
Nekutora matanho ari pamusoro apa, kubhenda kweiyo mbiri kunogona kubviswa, uye extruder inogona kuvimbiswa kuburitsa emhando yepamusoro PVC profiles zvakatsiga uye zvakajairwa.
Low tembiricha inokanganisa simba
Zvinhu zvinokanganisa kuderera-kupisa kwesimba rePVC profiles zvinosanganisira fomula, chimiro chechikamu chechimiro, mold, dhigirii repurasitiki, mamiriro ebvunzo, nezvimwe.
(1) Fomula
Parizvino, CPE inoshandiswa zvakanyanya seyakagadziridza maitiro.Pakati pavo, CPE ine chikamu chemazana che36% yeklorini ine zvirinani gadziriso mhedzisiro paPVC, uye dosi kazhinji 8-12 zvikamu nekuwanda.Elasticity uye kuenderana nePVC.
(2) Chimiro chechikamu cheprofile
Yepamusoro-mhando PVC profiles ine yakanaka muchinjiko-chikamu chimiro.Kazhinji, chimiro chine chikamu chiduku chemuchinjikwa chiri nani pane chigadziro chine chikamu chikuru chemuchinjikwa, uye nzvimbo yekusimbiswa kwemukati pamuchinjikwa inofanira kuiswa zvakakodzera.Kuwedzera kukora kwembabvu yemukati uye kutora denderedzwa arc shanduko pakubatana pakati pembabvu yemukati nemadziro zvese zvinobatsira kuvandudza yakaderera tembiricha kukanganisa simba.
(3) Mold
Kubata kwe mold pane yakaderera tembiricha kukanganisa simba kunonyanya kuratidzwa mukunyunguduka kunyunguduka uye kushushikana kwekudzora panguva yekutonhora.Kana iyo resipi yakatemwa, kunyungudika kunyungudika kunonyanya kuenderana nekufa.Iwo maprofiles anobuda mufa anoburitsa akasiyana kugovera kwekushushikana kuburikidza nenzira dzakasiyana dzekutonhora.Iyo yakaderera tembiricha yekukanganisa simba rePVC profiles haina kunaka uko kushushikana kwakadzika.Kana maPVC profiles akaiswa pasi pekutonhora nekukurumidza, anowanzo kushushikana zvakanyanya.Naizvozvo, marongerwo emugero wemvura inotonhorera ye calibrating mold yakakosha zvikuru.Tembiricha yemvura inowanzodzorwa pa14°C-16°C.Iyo inononoka kutonhora nzira inobatsira kuvandudza yakaderera-tembiricha yekukanganisa simba rePVC profiles.
Kuti uve nechokwadi chechimiro chakanaka chemukuvhu, chenesa iyo kufa nguva nenguva kudzivirira tsvina inovhara iyo kufa nekuda kwekugara kwenguva refu kuenderera kugadzirwa, zvichikonzera kuderedzwa kwekubuda uye kutetepa mbabvu dzinotsigira, izvo zvinokanganisa yakaderera-tembiricha yekukanganisa simba.Kugara kucheneswa kweiyo calibrating mold kunogona kuve nechokwadi chakakwana calibrating vacuum uye kuyerera kwemvura kweiyo calibrating mold kuti ive nechokwadi chekutonhora kwakaringana panguva yekugadzira profil, kuderedza kuremara uye kuderedza kushushikana kwemukati.
(4) Dhigirii repurasitiki
Huwandu hukuru hwekutsvagisa uye mhinduro dzebvunzo dzinoratidza kuti yakanakisa kukosha kwekudzika-tembiricha yekukanganisa simba rePVC profiles inowanikwa kana dhigirii repurasitiki riri 60% -70%.Chiitiko chinoratidza kuti "tembiricha yakakwira uye yakaderera kumhanya" uye "yakadzika tembiricha uye yakanyanya kumhanya" inogona kuwana yakafanana dhigirii yepurasitiki.Nekudaro, tembiricha yakaderera uye kumhanya kwakanyanya kunofanirwa kusarudzwa mukugadzirwa, nekuti kupisa kwemagetsi kushandiswa kunogona kudzikiswa pakudziya kwakaderera, uye kugona kwekugadzira kunogona kuvandudzwa nekumhanya kwakanyanya, uye kugera mhedzisiro inobuda pachena kana mapatya-screw extruder aburitswa. nekumhanya kukuru.
(5) Mamiriro ekuedzwa
GB/T8814-2004 ine mirau yakasimba pane yakaderera-tembiricha yekukanganisa bvunzo, senge profil kureba, donho resando mass, hammerhead radius, sampuli mamiriro echando, bvunzo nharaunda, nezvimwe. zvakanyatsotevedzwa.
Pakati pavo: "kukanganisa kwehuremu hunodonha pakati pemuenzaniso" kunofanirwa kunzwisiswa se "kuita kukanganisa kwehuremu hunodonha pakati pegomba remuenzaniso", mhedzisiro yebvunzo yakadai ndeyechokwadi.
Matanho ekuvandudza yakaderera tembiricha kukanganisa kuita ndeaya anotevera:
1. Nyatsotarisa kunaka kwezvinhu zvinoshandiswa, uye nyatsoteerera kune mamiriro ezvinhu ekufa kwekubuda uye chiteshi chevacuum.Kubuda kwefa kunofanira kuva nemuvara wakafanana, kuve nehumwe gloss, uye kubuda kunofanira kuva yunifomu.Inofanirwa kuve nekunaka kwakanaka pakukanya nemaoko.Izvo zvinhu zviri pavacuum port yeinjini huru zviri mumamiriro e "bhinzi curd zvakasara", uye hazvigone kuburitsa mwenje kana yatanga purasitiki.Izvo zviyero zvakadai sejini huru ikozvino uye kudzvinyirira kwemusoro kunofanira kugadzikana.
2.Standardize maitiro ekugadzirisa kuti ave nechokwadi cheplasticizing effect.Iyo tembiricha yekudzora inofanira kunge iri "bheseni" maitiro.Kupisa kwekushisa kunoshanduka kubva kunzvimbo yekutanga ye extruder kusvika kumusoro inofanira kuva "bheseni" rudzi.Shandura kune "yemukati neyekunze chiyero" kuve nechokwadi chekuti zvinhu zvinodziya zvakaenzana.Muchiitiko chechimiro chakafanana, iyo extrusion process haifanirwe kuchinjwa zvakanyanya.
Nguva yekutumira: Jun-07-2023
