Isitatimende Sobumfihlo: Ubumfihlo bakho bubaluleke kakhulu kithina. Inkampani yethu ithembisa ukungadaluli imininingwane yakho kunoma yikuphi ukuveza izimvume zakho ezicacile.
Isimiso semishini
Indlela eyisisekelo yokukhishwa ilula - isikulufa sijikeleza emgqonyeni bese sidonsela ipulasitiki phambili. Isikulufa empeleni yi-bevel noma umthambeka osongelwe ungqimba lwesikhungo. Inhloso yawo ukukhulisa ingcindezi ukuze unqobe ukumelana okukhulu. Endabeni ye-extruder, kunezinhlobo ezintathu zokumelana ezidinga ukunqotshwa: ukungqubuzana kwezinhlayiya eziqinile (okuphakelayo) ngokumelene nodonga lwesilinda kanye nokujikeleza kwesikulufa ngaphambi kokujikeleza kwesikulufa (indawo yokudla ); Ukunamathela odongeni lomgqomo; Ukuphikiswa kwangaphakathi kokuncibilika njengoba kuqhutshwa phambili.
Uma into ingahambi ngendlela enikeziwe, amandla asentweni alinganiselwe kulolu hlelo. Isikulufa asihambi ngendlela ye-axial, yize ingajikeleza ngokushesha eduze kwalapho. Ngakho-ke, amandla we-axial esikhaleni alinganiselwe, futhi uma kusebenza phambili okukhulu phambili kuncibilike ngopulasitiki, futhi kusebenza emuva okufanayo emuva kwento. Lapha, okusindayo okusetshenzisiwe kungukuthi i-haring esebenza ngokubhebhethwa ngemuva kwe-feed port.
Izikulufo ezizodwa ezizodwa ziyintambo elungile, njengezikulufo kanye nama-bolts asetshenziswa ekusebenzeni ngokhuni nasemishini. Uma bebheka emuva, bajikeleza ngakolunye uhlangothi ngoba bazama ukuphetha umgqomo ngangokunokwenzeka. Kwezinye izikulufu ze-Twin-screw, izikulufo ezimbili zijikeleza ngezindlela eziphambene kumasilinda amabili bese siwela omunye komunye, ngakho-ke umuntu kufanele anikezwe ngesandla kanye nomunye. Kwezinye izikulufo ze-OccLusal Twin, izikulufo ezimbili zijikeleza ngendlela efanayo futhi kufanele zibe nokuqondiswa okufanayo. Kodwa-ke, kunoma yikuphi, kukhona ukuthwala okuthe xaxa okubamba amabutho angemuva, futhi umgomo kaNewton usasebenza.
2. Umgomo We-Thermal
Amapulasitiki angemva kwe-thermoplastics - ayancibilika lapho efudumeza futhi aqinise futhi ngokupholisa. Kuvelaphi ukushisa kwepulasitiki ebiwe? Ukuphakelwa kuqala kanye ne-barrel / ama-heathers okushisa kungasebenza futhi kubalulekile ekuqaleni, kepha amandla okufaka izimoto - ukungqubuzana kwemoto okumelene nokuncibilika kwe-viscous - kukhiqizwa isikulufa Umthombo wokushisa obalulekile wamapulasitiki, ngaphandle kwezinhlelo ezincane, izikulufo eziphansi eziphansi, izinsiza zokushisa eziphakeme kakhulu kanye nezicelo zokufaka ama-coation.
Kuwo wonke amanye imisebenzi, kubalulekile ukuqaphela ukuthi i-barrel heater akuyona umthombo wokuqala wokushisa ekusebenzeni, ngakho-ke umphumela wokukhishwa ungaphansi kwalokho esikulindele (bheka iSimiso 11). Ukushisa kwe-post-cylinder kusekuqakathekile ngoba kuthinta isilinganiso sezinto zokuhamba ze-solids emazinyweni noma kokuphakelayo. Amazinga okushisa afe nokubumba kufanele abe yindawo yokushisa efiselekayo noma eduze kwalokhu kushisa ngaphandle kokuthi asetshenziselwa inhloso ethile njengokukhazimula, ukusatshalaliswa koketshezi noma ukulawulwa kwengcindezi.
3. Imigomo yokuhlinza
Kwi-extuders eningi, ushintsho ku-screw Speed lutholakala ngokulungisa ijubane lemoto. Imoto imvamisa ijikeleza ngejubane eliphelele le-1750 RPM, kepha lokhu kuyashesha kakhulu kwisikulufa se-extruder. Uma ijikelezwa ngejubane elisheshayo, kukhiqizwa kakhulu ukushisa okukhulu futhi isikhathi sokuhlala sepulasitiki sifushane kakhulu ukulungiselela umfaniswano, oshukumisa kahle. I-Conferelation Ratios ejwayelekile isukela ku-10: 1 kuya ku-20: 1. Isigaba sokuqala singaba gear noma i-pulley, kepha isigaba sesibili sisebenzisa amagiya kanye nesikulufa sibekwe enkabeni yegiya elikhulu lokugcina.
Kweminye imishini egijimayo ehamba kancane (enjengezikulungi ze-Twin ze-UPVC), kungahle kube nezigaba ezi-3 zokudideka kanye nesivinini esiphezulu kungaba ngaphansi njenge-30 RPM noma ngaphansi (kuze kube ngu-60: 1 isilinganiso). Kokunye okwedlulele, ezinye izikulufu ezinde kakhulu zokuphazamiseka zingasebenza ngo-600 RPM noma ngokushesha, ngaleyo ndlela zidinga inani eliphansi kakhulu lokukhohlisa kanye nokupholisa okuningi okujulile.
Kwesinye isikhathi inani lokukhohlisa liyagcwala umsebenzi - kuzoba namandla amaningi okusebenzisa - futhi kungenzeka ukwengeza i-pulley block phakathi kwemoto kanye nesigaba sokuqala sokukhohlisa esishintsha isivinini esikhulu. Lokhu kukhulisa ijubane lesikulufo ngenhla komkhawulo wangaphambilini noma kunciphise isivinini esikhulu ukuvumela uhlelo ukuthi lusebenze ngamaphesenti amakhulu esivinini esikhulu. Lokhu kuzokwandisa amandla atholakalayo, ukunciphisa i-amprege futhi kugweme izinkinga zezimoto. Kuzona zozimbili lezi zimo, okukhishwa kungakhuphuka ngokuya ngezidingo zayo zokupholisa.
4. Ukudla njenge-coolant
Ukukhishwa kudlulisela amandla emoto, kwesinye isikhathi i-heater, epulasitiki ebandayo, ukuyiguqula kusuka ekuqineni kuya kuncibilike. Okuphakelayo kokufaka kupholile kune-barrel kanye nesikulufa amazinga okushisa endaweni yokuphakelayo. Kodwa-ke, ingaphezulu le-barrel endaweni ephakelayo cishe lihlale lingenhla kwepulasitiki. Ipholile ngokuxhumana nezinhlayiya zokondla, kepha ukushisa kugcinwe ukushisa okudluliselwe emuva kokuphela kwangaphambili okushisayo nokushisa okulawulwayo. Ngisho nangemva kokushiswa kokushisa kwamanje okubanjelwe ukungqubuzana kwe-viscous futhi akukho okufakwa kokushisa kwe-barrel okudingekayo, i-post heater ingadingeka. Okuhlukile okubaluleke kakhulu yi-cartridge yokuphakelayo ebekiwe, ecishe ibe yi-HDPE kuphela.
Umphezulu wezimpande zesikulufa ubuye waphola ngokuphakelayo futhi ufakwa odongeni lwe-barrel ngezinhlayiya zokuphakelwa kwepulasitiki (nomoya phakathi kwezinhlayiya). Uma isikulufa sima ngokuzumayo, okuphakelayo kuyama futhi kuyekala ukuthi ukushisa kubuyela emuva kusuka ekugcineni okushisayo, indawo yesikulufa iyashisa endaweni ephakelayo. Lokhu kungadala ukunamathela noma ukubopha kwezinhlayiya ezimpandeni.
5. Endaweni Yokudla, Namathela kwisilinda bese uslayida isikulufa
Ukuze wandise inani lama-solids athuthwe endaweni ebushelelezi ye-barrel feed zone yesikulufa esisodwa, izinhlayiya kufanele zinamathele emgqonyeni bese zingena isikulufa. Uma izinhlayiya zinamathela ezimpandeni zesikulufa, akukho okudonsa phansi; Ivolumu yendima nenani lama-solids ancishisiwe. Esinye isizathu sokunamathela kabi ezimpandeni ukuthi ipulasitiki ingashisa lapha futhi ikhiqize ama-gels kanye nezinhlayiya ezifanayo ezingcona, noma ngezikhathi ezithile zinamathela ngejubane lokuphuma.
I-Plastics eminingi islayida ngokwemvelo ezimpandeni ngoba ibanda lapho bengena, futhi ukungezwani kungashisi izimpande njengokushisa njengezindonga. Ezinye izinto ezibonakalayo kungenzeka zinamathele kunezinye: I-PVC yepulasitiki evikelekile kakhulu, i-amorphous pet, kanye namaphoyisa asekelwe ePolyolofini anezindawo ezinamathela ezinamathela.
Ngomgqomo, kuyadingeka ngeplastiki ukunamathela lapha ukuze kuqhekeke futhi kuqhume phambili ngentambo yesikulufa. Kufanele kube nokuhlanganiswa okuphezulu kokuxabana phakathi kwama-granules kanye nomgqomo, futhi i-coefficient yokushayela izingxabano ithonywe ngokuqinile ukushisa komgqomo wangemuva. Uma izinhlayiya zinganamatheli, zimane zijikeleze endaweni ngaphandle kokuqhubekela phambili - yingakho ukondla okubushelelezi kungalungile.
Ukufiphaza okungaphezulu akuyona ukuphela kwento ethinta okuphakelayo. Izinhlayiya eziningi azithinti umgqomo noma umsuka wesikulufa, ngakho-ke kufanele kube khona ukufunwa kanye nokuxhumana kwemishini kanye ne-viscosity ngaphakathi kwezinhlayiya.
Isilinda esibonakalayo yicala elikhethekile. Umkhombe usendaweni ephakelayo futhi indawo ephakelayo ifakwa ngokushelela kusuka kokusele komgqomo futhi amanzi ajulile apholile. Intambo igxilisa izinhlayiya ku-groove futhi yakha ingcindezi ephezulu kakhulu ngaphezulu kwebanga elifushane. Lokhu kwandisa ukubekezelela ukuluma kokukhishwa okuphansi kwesikulufa esifanayo ekuphumeni okufanayo, ukuze ukushisa okukhiqizwayo kukhiqizwe ngaphambili kuncishisiwe futhi izinga lokushisa elincibilikayo liphansi. Lokhu kungasho ukukhiqizwa okusheshayo emigqeni yamafilimu epholile. Ithangi lilungele ikakhulukazi i-HDPE, okuyipulasitiki ebushelelezi evamile ngaphandle kwamapulasitiki afakiwe.
6. Izinto ezibiza kakhulu
Kwezinye izimo, izindleko ezibonakalayo zingalandisa ngama-80% ezindleko zokukhiqizwa - ngaphezu kwazo zonke ezinye izinto - ngaphandle kwemikhiqizo ebaluleke kakhulu ngekhwalithi nokupakisha, njengama-catheters. Lo mgomo ngokwemvelo ngokwemvelo uholela eziphethweni ezimbili: amaprosesa kufanele asebenzise kabusha isikhafu futhi ahlenge ngangokunokwenzeka esikhundleni sezinto eziluhlaza, futhi anamathele ngokuqinile ekubekezeleni ngangokunokwenzeka ukuze ugweme ukuphambuka kokuqina kwelitshe nezinkinga zomkhiqizo.
7. Izindleko zamandla azibalulekile
Yize ukuheha kanye nezinkinga zangempela zefekthri zisezingeni elifanayo nezindleko zamandla akhuphukayo, amandla adingekayo ukwenza i-extruder kuseyingxenye encane yezindleko zokukhiqiza. Lokhu kuhlale kunjalo ngoba izindleko ezibonakalayo ziphezulu kakhulu futhi i-extruder uhlelo olusebenzayo. Uma kwethulwa amandla amaningi, ipulasitiki izoshisa ngokushesha kangangokuba ayikwazi ukucutshungulwa kahle.
8. Ingcindezi ekugcineni kwesikulufa ibaluleke kakhulu
Le ngcindezi ikhombisa ukumelana kwazo zonke izinto ezansi phansi kwesikulufa: isihlungi sokuhlunga kanye nepuleti ye-shredder engcolisiwe, i-adapter shufafaza ishubhu, futhi noma ikuphi) Akuyancinga kuphela ejometry yalezi zingxenye kodwa futhi nasemazingeni okushisa ohlelweni, okuthinta ithuba lokuphumula nokudlula. Akuxhomeki ekwakhiweni kwesikulufa, ngaphandle kwalapho kuthinta amazinga okushisa, ukubonakala nokutholwa. Ngenxa yezizathu zokuphepha, izinga lokushisa lokulinganisa libalulekile - uma liphezulu kakhulu, ukufa nokubumba kungaqhuma futhi kulimaze abantu abaseduze noma imishini.
Ingcindezi inenzuzo yokuyaluza, ikakhulukazi endaweni yokugcina yohlelo olulodwa lwesikulufa (indawo yokulinganisa). Kodwa-ke, ingcindezi ephezulu futhi isho ukuthi le moto kufanele iphumelele amandla amaningi - futhi ngaleyo ndlela izinga lokushisa le-Melt liphezulu - elingakubeka umkhawulo wengcindezi. Kwisikulufo esingamawele, ukuzibandakanya kwezikulufo ezimbili nomunye kungumqashi osebenza kahle kakhulu, ngakho-ke akukho ngcindezi edingekayo kule nhloso.
Ekwenziweni kwezingxenye eziyize, njengamashubhu ezenziwe ngesicabucabu spider isikhunswaka amabakaki, ukucindezela okukhulu kufanele kwenziwe ngaphakathi kwesikhunta ukusiza ekuhlanganeni kwemifudlana ehlukile. Ngaphandle kwalokho, umkhiqizo osemgqeni we-weld ungaba buthakathaka futhi izinkinga kungenzeka ngesikhathi sokusebenzisa.
9. Ukukhishwa = Ukuchithwa kwentambo yokugcina / - Ukugeleza kwengcindezi nokuvuza
Ukuhanjiswa kwentambo yokugcina kubizwa ngokuthi ukugeleza okuhle futhi kuncike ejometry yesikulufa, isivinini sesikulufa kanye nokuncibilikisa ukuncibilikisa. Kulawulwa ukusakazwa kwengcindezi futhi empeleni kufaka phakathi umphumela wokuhudula okunciphisa ukuphuma (okuboniswe ngokucindezela okuphezulu kakhulu) kanye nanoma yimuphi umphumela ongenhla kokuphakelayo okukhulisa umphumela. Ukuvuza okusha kwentambo kungaba kunoma iyiphi enye yezindlela ezimbili.
Kuyasiza ukubala okukhishwayo nge-RPM ngayinye (ukujikeleza) njengoba lokhu kufanekisela noma yikuphi ukwehla komthamo wokupompa wesikulufa ngasikhathi. Okunye ukubalwa okuhlobene nakho okukhishwa ngehhashi ngalinye lamahhashi noma i-kilowatt esetshenzisiwe. Lokhu kufanela ukusebenza kahle futhi kuyakwazi ukulinganisa umthamo wokukhiqiza wemoto enikeziwe futhi ushayela.
10. Izinga le-Shear lidlala indima enkulu ekubonakaleni
Onke amapulasitiki ajwayelekile anciphisa izakhiwo, okusho ukuthi i-viscosity iba ngaphansi njengoba ipulasitiki ihamba ngokushesha nangokushesha. Lo mphumela wamapulasitiki athile abonakala ikakhulukazi. Isibonelo, amanye ama-PVC akhulisa izinga lokugeleza ngesici esingu-10 noma ngaphezulu lapho isivunguvungu siphindwe kabili. Ngokuphambene nalokho, amandla we-Lldpe Shear awancishisiwe kakhulu, futhi izinga lokugeleza likhuphuka izikhathi ezintathu kuya kwezine lapho izizathu ziphindwe kabili. Ukuncishiswa kokuncishiswa kwe-shear okuncishisiwe kusho ukubonwa okuphezulu ngaphansi kwezimo zokukhishwa, okuyindlela eminingi yama-motor iyadingeka. Lokhu kungachaza ukuthi kungani i-LldPE isebenza emazingeni okushisa aphezulu kune-LDPE. Izinga lokugeleza livezwa ngesilinganiso se-Shear, cishe ama-100 s-1 esiteshini sesikulufa, phakathi kwe-100 no-100 s-1 kumaphrofayela amaningi afa, futhi ngaphezulu kwe-100 s-1 kugebe eliphakathi kwentambo kanye nodonga nezinye ezincane ukufela izikhala. I-Melt Coefflicrible iyisilinganiso esivame ukusetshenziswa sokubonakala kepha ibuyiselwe emuva (isib Ngeshwa, isilinganiso akusona isilinganiso sangempela kwi-extuder ngesilinganiso se-shear sama-10 s-1 noma ngaphansi kwesilinganiso sokugeleza okusheshayo.
11. Imoto ibhekene nesilinda, futhi isilinda siphambene nemoto.
Kungani umphumela wokulawula we-cylinder hhayi njalo njengoba bekulindelekile, ikakhulukazi endaweni yokulinganisa? Uma isilinda sifudumele, isilinda
December 09, 2024
September 05, 2023
September 05, 2023
Imeyili kulo mthengisi
December 09, 2024
September 05, 2023
September 05, 2023
Isitatimende Sobumfihlo: Ubumfihlo bakho bubaluleke kakhulu kithina. Inkampani yethu ithembisa ukungadaluli imininingwane yakho kunoma yikuphi ukuveza izimvume zakho ezicacile.
Gcwalisa eminye imininingwane ukuze ukwazi ukuxhumana nawe ngokushesha
Isitatimende Sobumfihlo: Ubumfihlo bakho bubaluleke kakhulu kithina. Inkampani yethu ithembisa ukungadaluli imininingwane yakho kunoma yikuphi ukuveza izimvume zakho ezicacile.