Enqubweni yokubumba yokuguqula izinhlayiya zepulasitiki zibe yimikhiqizo yepulasitiki, amapulasitiki avame ukungaphansi kokushisa okuphezulu nokucindezela okukhulu, nokubunjwa kokugeleza ngamazinga aphezulu okugunda.Izimo ezihlukene zokubumba nezinqubo zizoba nemiphumela ehlukile kukhwalithi yomkhiqizo.Ukubumba umjovo kunepulasitiki Iqukethe izici ezine: izinto ezingavuthiwe, umshini wokubumba umjovo, isikhunta kanye nenqubo yokubumba umjovo.
Izinga lemikhiqizo lihlanganisa ikhwalithi yempahla yangaphakathi kanye nekhwalithi yokubukeka.Ikhwalithi yempahla yangaphakathi ngokuyinhloko ingamandla emishini, futhi ubukhulu bokucindezeleka kwangaphakathi buthinta ngokuqondile amandla omshini womkhiqizo.Izizathu eziyinhloko zokukhiqiza ukucindezeleka kwangaphakathi kunqunywa ubucwebe bomkhiqizo kanye nokuma kwama-molecule ekubunjweni kwepulasitiki.kwe.Izinga lokubukeka lomkhiqizo liyikhwalithi engaphezulu yomkhiqizo, kodwa ukungqubuzana nokuguqulwa komkhiqizo okubangelwa ukucindezeleka okukhulu kwangaphakathi kuzophinde kuthinte ikhwalithi yokubukeka.Ikhwalithi yokubukeka kwemikhiqizo ihlanganisa: imikhiqizo enganele, amazinyo omkhiqizo, izimpawu zokushisela, i-flash, amabhamuza, izintambo zesiliva, amabala amnyama, ukuguqulwa, imifantu, i-delamination, ukuxebuka nokushintsha umbala, njll., konke okuhlobene nezinga lokushisa lokubumba, ingcindezi, ukugeleza, isikhathi kanye nesikhundla.ezihlobene.
Okuqukethwe
Ingxenye yokuqala: Izinga lokushisa lokubumba
Ingxenye Yesibili: Ingcindezi yenqubo yokubumba
Ingxenye yesithathu: Isivinini somshini wokubumba umjovo
Ingxenye Yesine: Ukuhlelwa kwesikhathi
Ingxenye Yesihlanu: Ukulawula Isikhundla
Ingxenye yokuqala: Izinga lokushisa lokubumba
Izinga lokushisa lomphongolo:Izinga lokushisa elincibilikayo lepulasitiki.Uma izinga lokushisa lomgqomo libekwe phezulu kakhulu, i-viscosity yepulasitiki ngemva kokuncibilika iphansi.Ngaphansi kwengcindezi yomjovo efanayo kanye nezinga lokugeleza, isivinini somjovo siyashesha, futhi imikhiqizo ebunjiwe ijwayele ukufunya, isiliva, ukuguquguquka nokuqina.
Izinga lokushisa lomgqomo liphansi kakhulu, ipulasitiki ayinakwenziwa kahle ngepulasitiki, i-viscosity iphezulu, ijubane lomjovo lihamba kancane ngaphansi kwengcindezi yomjovo efanayo kanye nezinga lokugeleza, imikhiqizo ebunjiwe ayanele kalula, amamaki we-weld ayabonakala, ubukhulu engazinzile futhi kukhona amabhlogo abandayo emikhiqizweni.
Izinga lokushisa le-nozzle:Uma izinga lokushisa le-nozzle libekwe phezulu, i-nozzle izophuma kalula, ibangele ama-filaments abandayo emkhiqizweni.Izinga lokushisa eliphansi le-nozzle libangela ukuvala uhlelo lokuthulula isikhunta.Umfutho womjovo kumele unyuswe ukuze ujove ipulasitiki, kodwa kuzoba nezinto ezibandayo kumkhiqizo obunjiwe ngokushesha.
Izinga lokushisa lesikhunta:Uma izinga lokushisa lesikhunta liphezulu, ingcindezi yomjovo kanye nezinga lokugeleza lingasethwa libe phansi.Kodwa-ke, ekucindezelweni okufanayo kanye nesilinganiso sokugeleza, umkhiqizo uzokhanya kalula, ugoqe futhi uguqule, futhi kuyoba nzima ukukhipha umkhiqizo ekubunjeni.Izinga lokushisa lesikhunta liphansi, futhi ngaphansi kwengcindezi yomjovo ofanayo kanye nezinga lokugeleza, umkhiqizo awukhiwanga ngokwanele, unamabhamuza namamaki we-weld, njll.
Izinga lokushisa lepulasitiki lokumisa:Amapulasitiki ahlukahlukene anamazinga okushisa omile ahlukene.Amapulasitiki e-ABS ngokuvamile asetha izinga lokushisa lokumisa elingu-80 kuya ku-90°C, ngaphandle kwalokho kuzoba nzima ukomisa nokuhwamulisa umswakama nezincibilikisi ezisele, futhi imikhiqizo izoba nezintambo ezisiliva namabhamuza kalula, futhi amandla emikhiqizo nawo azokwehla.
Ingxenye Yesibili: Ingcindezi yenqubo yokubumba
Ingcindezi yangaphambili yokubumba:umfutho ophakeme wasemuva kanye nokuminyana kwesitoreji esikhulu kusho ukuthi izinto eziningi zingagcinwa ngaphakathi kwevolumu efanayo yokugcina.Ingcindezi ephansi emuva isho ukuminyana kwesitoreji esiphansi kanye nempahla yokugcina encane.Ngemuva kokusetha indawo yokugcina, bese wenza ukulungiswa okukhulu ekucindezelweni kwangemuva, kufanele unake ukusetha kabusha indawo yokugcina, ngaphandle kwalokho kuzokwenza kalula i-flash noma umkhiqizo onganele.
Umfutho womjovo:Izinhlobo ezahlukene zamapulasitiki zinama-viscosity ancibilikayo ahlukene.I-viscosity yama-amorphous plastics ishintsha kakhulu ngokushintsha kwezinga lokushisa le-plasticizing.Ingcindezi yomjovo isethwe ngokuya nge-viscosity yokushisela yepulasitiki kanye nesilinganiso senqubo yepulasitiki.Uma ingcindezi yomjovo isethwe iphansi kakhulu, umkhiqizo uzojovwa ngendlela enganele, okuzoholela ekubeni nezintuba, izimpawu zokushisela kanye nobukhulu obungazinzile.Uma ingcindezi yomjovo iphezulu kakhulu, umkhiqizo uzoba ne-flash, ukushintsha kombala kanye nobunzima ekukhipheni isikhunta.
I-clamping pressure:Kuncike endaweni ecatshangelwe ye-mold cavity kanye nengcindezi yomjovo.Uma ukucindezela kwe-clamping kunganele, umkhiqizo uzokhanya kalula futhi andise ngesisindo.Uma i-clamping force inkulu kakhulu, kuyoba nzima ukuvula isikhunta.Ngokuvamile, ukulungiselelwa kokucindezela kokubopha akufanele kudlule ku-120par/cm2.
Ukubamba ingcindezi:Lapho umjovo usuqediwe, isikulufu siyaqhubeka nokunikezwa ukucindezela okubizwa ngokuthi ukucindezela kokubamba.Ngalesi sikhathi, umkhiqizo osesikhunjeni sesikhunta awukakaqandi.Ukugcina ukucindezela kungaqhubeka nokugcwalisa i-mold cavity ukuqinisekisa ukuthi umkhiqizo ugcwele.Uma ingcindezi yokubamba kanye nokusetha kwengcindezi kuphezulu kakhulu, kuzoletha ukumelana okukhulu nesikhunta sokusekela kanye nengqikithi yokukhipha.Umkhiqizo uzoshintsha kalula ube mhlophe futhi ugoqe.Ngaphezu kwalokho, isango lomgijimi wesikhunta lizonwetshwa kalula futhi liqiniswe ngepulasitiki eyengeziwe, futhi isango lizophulwa kumgijimi.Uma ingcindezi iphansi kakhulu, umkhiqizo uzoba nama-dent kanye nobukhulu obungazinzile.
Umgomo wokusetha i-ejector kanye nengcindezi ye-neutron ukusetha ingcindezi ngokusekelwe kusayizi jikelele wendawo yesikhunta sesikhunta, indawo eyinhloko yokuqagela ye-core efakiwe, kanye yinkimbinkimbi yejometri yomkhiqizo obunjiwe.usayizi.Ngokuvamile, lokhu kudinga ukusetha ingcindezi yesikhunta esisekelayo nesilinda neutron ukuze sikwazi ukusunduza umkhiqizo.
Ingxenye yesithathu: Isivinini somshini wokubumba umjovo
Isivinini sesikulufa: Ngaphezu kokulungisa izinga lokugeleza langaphambi kwepulasitiki, lithinteka kakhulu ukucindezela kwangaphambi kwepulasitiki emuva.Uma izinga lokugeleza langaphambi kokubumba lilungiswa libe inani elikhulu futhi ingcindezi yangaphambili yokubumba iphezulu, njengoba isikulufu sizungeza, ipulasitiki izoba namandla amakhulu okugunda emgqonyeni, futhi isakhiwo samangqamuzana epulasitiki sizonqunywa kalula. .Umkhiqizo uzoba namabala amnyama nemivimbo emnyama, okuzothinta izinga lokubukeka namandla omkhiqizo., futhi izinga lokushisa lokushisa komgqomo kunzima ukulawula.Uma izinga lokugeleza langaphambi kwepulasitiki libekwe liphansi kakhulu, isikhathi sokugcina sangaphambi kwepulasitiki sizonwetshwa, okuzothinta umjikelezo wokubumba.
Isivinini sokujova:Isivinini somjovo kumele simiswe ngendlela efanele, ngaphandle kwalokho izophazamisa ikhwalithi yomkhiqizo.Uma ijubane lomjovo lishesha kakhulu, umkhiqizo uzoba namabhamuza, ushiswe, ushintshe umbala, njll.
Sekela izinga lokugeleza kwesikhunta kanye ne-neutron:akumele kubekwe phezulu kakhulu, ngaphandle kwalokho ukukhipa kanye nokunyakaza kokudonsa okuyisisekelo kuzoshesha kakhulu, okuholela ekukhishweni okungazinzile kanye nokudonsa okuphakathi, futhi umkhiqizo uzophenduka ube mhlophe kalula.
Ingxenye Yesine: Ukuhlelwa kwesikhathi
Isikhathi sokumisa:Yisikhathi sokoma sezinto zokusetshenziswa zepulasitiki.Izinhlobo ezahlukahlukene zamapulasitiki zinamazinga okushisa afanele omisiwe nezikhathi.Izinga lokushisa lokumisa lepulasitiki ye-ABS lingu-80 ~ 90 ℃ futhi isikhathi sokumisa amahora ama-2.Ipulasitiki ye-ABS ivamise ukumunca amanzi angu-0.2 kuya ku-0.4% phakathi namahora angu-24, kanti okuqukethwe kwamanzi okungabunjwa ngomjovo kungu-0.1 kuya ku-0.2%.
Isikhathi sokubamba umjovo nengcindezi:Indlela yokulawula yomshini womjovo wekhompiyutha ifakwe umjovo wezigaba eziningi ukulungisa ingcindezi, isivinini kanye nenani lepulasitiki lomjovo ngezigaba.Ijubane lepulasitiki elifakwe emgodini wesikhunta lifinyelela isivinini esiqhubekayo, futhi ukubukeka kanye nekhwalithi yempahla yangaphakathi yemikhiqizo ebunjiwe iyathuthukiswa.
Ngakho-ke, inqubo yomjovo ngokuvamile isebenzisa ukulawula indawo esikhundleni sokulawula isikhathi.Ingcindezi yokubamba ilawulwa yisikhathi.Uma isikhathi sokubamba siside, ukuminyana komkhiqizo kuphezulu, isisindo sinzima, ukucindezeleka kwangaphakathi kukhulu, ukudiliza kunzima, kulula ukwenza mhlophe, futhi umjikelezo wokubumba unwetshiwe.Uma isikhathi sokubamba sisifushane kakhulu, umkhiqizo uzothambekela emazingeni kanye nobukhulu obungazinzile.
Isikhathi sokupholisa:Kuwukuqinisekisa ukuthi umkhiqizo uzinzile ngesimo.Kudinga isikhathi esanele sokupholisa kanye nokubunjwa ngemuva kokuthi ipulasitiki efakwe emgodini wesikhunta ibunjwe emkhiqizweni.Uma kungenjalo, umkhiqizo kulula ukusonteka nokukhubazeka lapho isikhunta sivulwa, futhi i-ejection kulula ukukhubaza futhi ibe mhlophe.Isikhathi sokupholisa side kakhulu, esinweba umjikelezo wokubumba futhi asinawo umnotho.
Ingxenye Yesihlanu: Ukulawula Isikhundla
Isikhundla sokushintsha isikhunta yibanga elihambayo lonke ukusuka ekuvulekeni kwesikhunta ukuya ekuvaleni nasekukhiyweni kwesikhunta, okubizwa ngokuthi indawo yokuguqula isikhunta.Indawo engcono kakhulu yokuhambisa isikhunta ukukwazi ukukhipha umkhiqizo kahle.Uma ibanga lokuvula isikhunta likhulu kakhulu, umjikelezo wokubumba uzoba mude.
Uma nje isikhundla sokusekela isikhunta silawulwa, indawo yokukhipha isikhunta ingasuswa kalula futhi umkhiqizo ungasuswa.
Indawo yesitoreji:Okokuqala, inani lepulasitiki elijovwe emkhiqizweni obunjiwe kufanele liqinisekiswe, futhi okwesibili, inani lezinto ezigcinwe emgqonyeni kufanele lilawulwe.Uma indawo yokugcina ilawulwa ishothi engaphezu kweyodwa, umkhiqizo uzokhanya kalula, ngaphandle kwalokho umkhiqizo uzokwakhiwa ngendlela enganele.
Uma kunezinto eziningi kakhulu emgqonyeni, ipulasitiki izohlala emgqonyeni isikhathi eside, futhi umkhiqizo uzophela kalula futhi uthinte amandla omkhiqizo obunjiwe.Ngokuphambene nalokho, kuthinta ikhwalithi ye-plasticization yepulasitiki, futhi akukho lutho olubuyiselwa esikhunjeni ngesikhathi sokugcinwa kwengcindezi, okuholela ekubunjweni okwanele komkhiqizo namadents.
Isiphetho
Izinga lemikhiqizo ebunjiwe yomjovo libandakanya ukuklanywa komkhiqizo, izinto zepulasitiki, ukwakheka kwesikhunta kanye nekhwalithi yokucubungula, ukukhethwa komshini wokubumba umjovo kanye nokulungiswa kwenqubo, njll. Ukulungiswa kwenqubo yomjovo akukwazi ukuqala endaweni ethile kuphela, kodwa kufanele kuqale kusukela kumgomo wenqubo yomjovo. .Ukucatshangelwa okuphelele nokubanzi kwezinkinga, ukulungiswa kungenziwa ngayinye ngayinye kusuka ezicini eziningi noma izinkinga eziningi zingalungiswa ngesikhathi esisodwa.Kodwa-ke, indlela yokulungisa kanye nesimiso kuncike kukhwalithi kanye nezimo zenqubo yemikhiqizo ekhiqizwa ngaleso sikhathi.
Isikhathi sokuthumela: Nov-15-2023