Kuyilo lwamacandelo eplastiki, ubukhulu bodonga lwenxalenye yiparameter yokuqala ekufuneka iqwalaselwe, ubukhulu bodonga lwenxalenye bumisela iipropathi zomatshini zenxalenye, inkangeleko yenxalenye, isakhono sokutofa inxalenye kunye neendleko. yenxalenye.Kunokuthiwa ukukhethwa kunye noyilo lobuninzi bodonga lwenxalenye lumisela ukuphumelela okanye ukungaphumeleli koyilo lwenxalenye.
Ubukhulu bodonga lwenxalenye kufuneka bube phakathi
Ngenxa yeempawu zeplastiki kunye nenkqubo yokutofa,ubukhulu bodonga lwamalungu eplastiki kufuneka bube kuluhlu olufanelekileyo, lungabi luncinci kakhulu, kwaye lungabi lukhulu kakhulu.
Ukuba ubukhulu bodonga buncinci kakhulu, iinxalenye zifakwe i-injection xa ukuhamba kokumelana, iplastiki inyibilika kunzima ukuzalisa i-cavity yonke, kufuneka ibe nezixhobo zokusebenza eziphezulu zokutofa ukufumana isantya esiphezulu sokuzalisa kunye noxinzelelo lwenaliti.
Ukuba ubukhulu bodonga bukhulu kakhulu, iinxalenye zokupholisa ixesha zinyuka (ngokwezibalo, ubukhulu bodonga lwandiswe ngamaxesha e-1, ixesha lokupholisa linyuke ngamaxesha angama-4), iinxalenye zokubumba zinyuka, ukuveliswa kwemveliso kuphantsi;kwangaxeshanye, ukutyeba kakhulu eludongeni kulula ukwenza ukuba iindawo zivelise ukushwabana, i-porosity, i-warpage kunye nezinye iingxaki zomgangatho.
Izinto ezahlukeneyo zeplastiki zineemfuno ezahlukeneyo zobukhulu obufanelekileyo bodonga lwamalungu eplastiki, kwaye nabavelisi beplastiki abahlukeneyo bezinto ezifanayo zeplastiki banokuba neemfuno ezahlukeneyo ezifanelekileyo zodonga.Izixhobo zeplastiki ezisetyenziswa ngokuqhelekileyo zoluhlu olufanelekileyo lwamadonga luboniswe kwiThebhile 1-1.Xa ubukhulu bodonga lwamalungu eplastiki busondele kumda ongentla nangaphantsi wexabiso elifanelekileyo lodonga olufanelekileyo, injineli yoyilo lwemveliso kufuneka ifune ingcebiso kumenzi weplastiki.
Itheyibhile 1-1 Ukukhetha ubukhulu bodonga kwiindawo zeplastiki
(Iyunithi:mm)
Izinto eziphambili ezichaza ubukhulu bodonga lwenxalenye yeplastikis:
1) Ingaba amandla okwakhiwa kwenxalenye anele.Ngokuqhelekileyo, ukutyeba kodonga, kokukhona ukomelela kwenxalenye.Kodwa ubukhulu bodonga lwamacandelo budlula uluhlu oluthile, ngenxa yokunciphisa kunye ne-porosity kunye nezinye iingxaki zekhwalithi, ukwandisa udonga lwamacandelo kuya kunciphisa amandla amacandelo.
2) Ngaba inxalenye ingamelana namandla ejection xa ibumba.Ukuba inxalenye incinci kakhulu, iya kukhubazeka ngokulula ngokukhutshwa.
3) Ngaba ukukwazi ukuxhathisa amandla okuqinisa ngexesha lokudibanisa.
4) Xa kukho ukufakwa kwesinyithi, amandla ajikeleze ukufakwa anele.Ukufakwa kwesinyithi ngokubanzi kunye nokuncipha kwezinto zeplastiki ezijikelezayo azifani, kulula ukuvelisa uxinzelelo loxinzelelo, amandla aphantsi.
5) Ukukwazi kwamalungu ukusasaza ngokulinganayo amandla empembelelo aphantsi kwayo.
6) Ingaba amandla omngxuma anele, amandla omgodi ayancipha ngokulula ngenxa yempembelelo yamanqaku okudibanisa.
7) Kwisiseko sokuhlangabezana nezi mfuno zingasentla, kunye nokubumba isitofu akuyi kuvelisa iingxaki zomgangatho, ubukhulu bodonga lwamalungu eplastiki kufuneka bube buncinci kangangoko, kuba ubukhulu bodonga olungqindilili abuyi kwandisa kuphela ixabiso lezinto eziphathekayo kunye nobunzima bezinto eziphathekayo. inxalenye, kodwa ukwandise umjikelo wokubumba inxalenye, ngaloo ndlela ukwandisa iindleko zemveliso.Umzobo 1-3 ubonisa ubudlelwane phakathi kobunzima bodonga kunye nexesha lokupholisa kwinxalenye yeplastiki ye-ABS.
Ukuze kuqinisekiswe kwaye kuphuculwe amandla enxalenye, iinjineli zoyilo lwemveliso zihlala zikhetha ukutyeba kodonga.
Ngapha koko, ayisiyiyo eyona ndlela yokuqinisekisa kunye nokuphucula amandla enxalenye ngokukhetha ubukhulu bodonga olungqingqwa.Amandla enxalenye anokuthi aphuculwe ngokongeza ukuqinisa, ukuyila iiprofayili zecandelo eligobileyo okanye le-wavy, njl. Oku akuncitshi nje inkunkuma yezinto eziphathekayo, kodwa kunciphisa ixesha lomjikelo wokubumba inaliti yenxalenye.
Ubukhulu bodonga obufanayo bamacandelo
Eyona nto ifanelekileyo yokusabalalisa ubuninzi bodonga lwamacandelo kulo naliphi na icandelo le-cross-section ye-uniform thickness.Ubunzima bodonga obungalinganiyo bunokubangela ukupholisa okungalinganiyo kunye nokushwabana kwenxalenye, kubangele ukushwabana komphezulu wenxalenye, i-porosity yangaphakathi, i-warpage kunye nokuguqulwa kwenxalenye, ukuchaneka kwe-dimensional kunzima ukuqinisekisa iziphene.
Imizekelo yamacandelo eplastiki aqhelekileyo kunye noyilo lwendonga efanayo luboniswe kuMfanekiso 1-4.
Ukuba inxalenye iyunifomu udonga ubukhulu akunakwenzeka ukufumana, ngoko ke ubuncinane kufuneka uqinisekise ukuba inxalenye eludongeni ubukhulu kunye nodonga obhityileyo kwi inguqu agudileyo, ukuphepha utshintsho olubukhali eludongeni ubukhulu inxalenye.Utshintsho olukhawulezayo kwindonga yodonga lwamacandelo luchaphazela ukuhamba kweplastiki yokunyibilika, kulula ukuvelisa iimpawu zoxinzelelo ngasemva kweplastiki, ezichaphazela ukubonakala kwemveliso;ngexesha elifanayo kulula ukukhokelela ekugxininiseni uxinzelelo, ukunciphisa amandla eenxalenye zeplastiki, okwenza kube nzima ukuba iindawo zikwazi ukumelana nomthwalo okanye impembelelo yangaphandle.
Amacandelo amane obunzima bodonga loyilo olungalinganiyo lokuyilwa kodonga njengoko kubonisiwe kuMfanekiso 1-5.
Uyilo olubi kakhulu eludongeni luboniswe kwi-a), apho kukho utshintsho olubukhali kudonga lwenxalenye;
Uyilo olungcono lwendonga luboniswe kuMzobo b) kunye no-c ), ubukhulu bodonga kudonga oluncinci lwenguqu yeyunifomu, ngokubanzi, ubude bendawo yenguqu buphindwe kathathu ubukhulu;
Uyilo oluhle kakhulu lodonga luboniswa kwi-d), kungekuphela nje inxalenye yodonga olugudileyo utshintsho, kodwa nakwinxalenye yodonga olubanzi usebenzisa uyilo olungenanto, kungekuphela nje ukuqinisekisa ukuba inxalenye ayicuki, kodwa nokuqinisekisa amandla amalungu.
Imibuzo engakumbi malunga nobukhulu bodonga lweplastiki, nceda uzive ukhululekile ukuqhagamshelana nathiadmin@chinaruicheng.com.
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Ixesha lokuposa: Dec-22-2022