Ipulasitiki ye-ABSinesikhundla esibalulekile embonini ye-elekthronikhi, embonini yemishini, ezokuthutha, izinto zokwakha, ukukhiqiza amathoyizi nezinye izimboni ngenxa yamandla ayo emishini ephezulu nokusebenza okuhle okuphelele, ikakhulukazi ezakhiweni zamabhokisi amakhudlwana nezingxenye zengcindezi. , izingxenye zokuhlobisa ezidinga i-electroplating azihlukaniseki kule plastiki.
1. Ukomiswa kwepulasitiki ye-ABS
Ipulasitiki ye-ABS ine-hygroscopicity ephezulu kanye nokuzwela okuphezulu kumswakama. Ukomisa okwanele nokushisa ngaphambi kokucubungula akukwazi nje ukuqeda amabhamuza afana ne-firework kanye nezintambo zesiliva ebusweni bomsebenzi obangelwa umhwamuko wamanzi, kodwa futhi kusiza amapulasitiki ukuba akhe, ukunciphisa ibala kanye ne-moiré ebusweni bomsebenzi womsebenzi. Umswakama wezinto zokusetshenziswa ze-ABS kufanele ulawulwe ngaphansi kuka-0.13%.
Izimo zokomisa ngaphambi kokubunjwa komjovo: Ebusika, izinga lokushisa kufanele libe ngaphansi kuka-75-80 ℃, futhi lihlale amahora angu-2-3; ehlobo, izinga lokushisa kufanele libe ngaphansi kuka-80-90 ℃ futhi lihlale amahora angu-4-8. Uma i-workpiece idinga ukubukeka icwebezelayo noma i-workpiece ngokwayo iyinkimbinkimbi, isikhathi sokumisa kufanele sibe side, sifinyelele amahora angu-8 kuya kwangu-16.
Ngenxa yokuba khona komswakama womkhondo, inkungu ebusweni iyinkinga evame ukunganakwa. Kungcono ukuguqula i-hopper yomshini ibe isomisi somoya oshisayo ukuze uvimbele i-ABS eyomile ukuthi imunce umswakama futhi ku-hopper. Qinisa ukuqapha kokuswakama ukuze uvimbele ukushisisa ngokweqile kwezinto lapho ukukhiqizwa kuphazamiseka ngephutha.
2. Izinga lokushisa lomjovo
Ubudlelwano phakathi kwezinga lokushisa nokuncibilika kwe-viscosity yepulasitiki ye-ABS buhlukile kobamanye amapulasitiki angama-amorphous. Lapho izinga lokushisa likhuphuka phakathi nenqubo yokuncibilika, ukuncibilika empeleni kuncipha kancane kakhulu, kodwa uma sekufinyelele izinga lokushisa le-plasticizing (ibanga lokushisa elifanele ukucutshungulwa, njenge-220 ~ 250 ℃), uma izinga lokushisa liqhubeka likhula ngokungaboni, ukumelana nokushisa. ngeke ibe phezulu kakhulu. Ukuwohloka okushisayo kwe-ABS kwandisa i-viscosity encibilikayo, okwenzaukubumba umjovokunzima kakhulu, futhi izakhiwo zemishini zezingxenye nazo ziyancipha.
Ngakho-ke, izinga lokushisa lomjovo le-ABS liphakeme kunalelo lamapulasitiki afana ne-polystyrene, kodwa alikwazi ukuba nebanga lokukhuphuka kwezinga lokushisa elixegayo njengalena yakamuva. Kweminye imishini yokubumba umjovo enokulawulwa okungalungile kwezinga lokushisa, lapho ukukhiqizwa kwezingxenye ze-ABS kufinyelela inombolo ethile, kuvame ukutholakala ukuthi izinhlayiya eziphuzi noma ezinsundu ze-coking zifakwe ezingxenyeni, futhi kunzima ukukususa.
Isizathu siwukuthi ipulasitiki ye-ABS iqukethe izingxenye ze-butadiene. Uma izinhlayiya zepulasitiki zinamathela ngokuqinile kwezinye izindawo eziku-screw groove okungelula ukuthi zigezwe ezingeni lokushisa eliphezulu, futhi zingaphansi kwezinga lokushisa eliphakeme lesikhathi eside, lizobangela ukuwohloka kanye ne-carbonization. Njengoba ukusebenza kokushisa okuphezulu kungase kubangele izinkinga ku-ABS, kuyadingeka ukunciphisa izinga lokushisa lesithando sesigaba ngasinye somphongolo. Vele, izinhlobo ezahlukahlukene kanye nokwakheka kwe-ABS kunamazinga okushisa ahlukile asebenzayo esithandweni. Njengomshini we-plunger, izinga lokushisa lomlilo ligcinwa ku-180 ~ 230 ℃; kanye nomshini wesikulufa, izinga lokushisa lomlilo ligcinwa ku-160 ~ 220 ℃.
Kuhle kakhulu ukusho ukuthi, ngenxa yokushisa okuphezulu kokucubungula kwe-ABS, kuyazwela ekushintsheni kwezinto ezihlukahlukene zenqubo. Ngakho-ke, ukulawula izinga lokushisa komkhawulo wangaphambili womgqomo kanye nengxenye ye-nozzle kubaluleke kakhulu. Ukuzijwayeza kufakazele ukuthi noma yiziphi izinguquko ezincane kulezi zingxenye ezimbili zizobonakala ezingxenyeni. Uma izinga lokushisa lishintsha kakhulu, lizoletha izinkinga ezifana ne-weld seam, isicwebezelisi esingesihle, i-flash, ukunamathela kwesikhunta, ukuguquguquka kombala nokunye.
3. Ingcindezi yomjovo
I-viscosity yezingxenye ezincibilikisiwe ze-ABS iphakeme kunaleyo ye-polystyrene noma i-polystyrene eguquliwe, ngakho-ke kusetshenziswa ingcindezi ephezulu yomjovo ngesikhathi sokujova. Yebo, akuzona zonke izingxenye ze-ABS ezidinga umfutho ophezulu, futhi ukucindezela komjovo ophansi kungasetshenziswa ezingxenyeni ezincane, ezilula, neziwugqinsi.
Phakathi nenqubo yomjovo, ukucindezela emgodini ngesikhathi lapho isango livaliwe ngokuvamile linquma izinga eliphezulu lengxenye kanye nezinga lamaphutha esiliva we-filamentous. Uma ingcindezi incane kakhulu, ipulasitiki iyancipha kakhulu, futhi kunethuba elikhulu lokungathintani nobuso bomgodi, futhi indawo yokusebenza i-athomu. Uma ukucindezela kukhulu kakhulu, ukungqubuzana phakathi kwepulasitiki kanye nobuso bomgodi kunamandla, okulula ukubangela ukunamathela.
4. Isivinini sokujova
Okwezinto ze-ABS, kungcono ukujova ngesivinini esiphakathi. Uma isivinini somjovo sishesha kakhulu, ipulasitiki kulula ukushiswa noma ukubola kanye nokufakwa kwegesi, okuzoholela ekulimaleni okufana ne-weld seams, i-gloss empofu kanye nokubabomvu kwepulasitiki eduze kwesango. Kodwa-ke, lapho ukhiqiza izingxenye ezinezindonga ezincane neziyinkimbinkimbi, kusadingeka ukuqinisekisa isivinini somjovo esiphezulu ngokwanele, ngaphandle kwalokho kuyoba nzima ukugcwalisa.
5. Izinga lokushisa lesikhunta
Izinga lokushisa lokubumba le-ABS liphakeme kakhulu, kanye nezinga lokushisa lesikhunta. Ngokuvamile, izinga lokushisa lesikhunta lilungiswa libe ngu-75-85 °C. Lapho ukhiqiza izingxenye ezinendawo enkulu ebonisiwe, izinga lokushisa elimisiwe lesikhunta lidingeka libe ngu-70 kuya ku-80 °C, futhi izinga lokushisa elinyakazayo lesikhunta lidingeka libe ngu-50 kuya ku-60 °C. Lapho ujova izingxenye ezinkulu, eziyinkimbinkimbi, ezinodonga oluncane, ukushisa okukhethekile kwesikhunta kufanele kucatshangelwe. Ukuze unciphise umjikelezo wokukhiqiza futhi ugcine ukuzinza okuhlobene kwezinga lokushisa lesikhunta, ngemva kokukhishwa kwezingxenye, ukugeza kwamanzi abandayo, ukugeza kwamanzi ashisayo noma ezinye izindlela zokumisa imishini zingasetshenziswa ukunxephezela isikhathi sokuqala sokulungisa amakhaza. umgodi.
Isikhathi sokuthumela: Apr-13-2022
