Ubukhulu bodonga lweiindawo zeplastikiunempembelelo enkulu kumgangatho. Xa ubukhulu bodonga buncinci kakhulu, ukuchasana kokuhamba kuphezulu, kwaye kunzima kwiindawo zeplastiki ezinkulu kunye neziyinkimbinkimbi zokuzalisa umgodi. Imilinganiselo yobukhulu bodonga lwamalungu eplastiki kufuneka ihlangabezane nezi mfuno zilandelayo:
1. Yiba namandla okwaneleyo kunye nokuqina;
2. Inokumelana neempembelelo kunye nokungcangcazela kwesixhobo sokudiliza xa udiliza;
3. Inokumelana namandla okuqinisa ngexesha lokuhlanganisa.
Ukuba ubungakanani bodonga aluqwalaselwanga kakuhle kwinqanaba loyilo lweendawo ezibunjiweyo zesitofu, kuya kubakho iingxaki ezinkulu kamva kwimveliso.
Eli nqaku ligxininise ekwenziweni kwezinto ezibunjiweyo zenaliti ye-thermoplastic, kuthathelwa ingqalelo isiphumo senxalenye yodonga lobunzima kwixesha lomjikelo, ukushwabana kwemveliso kunye ne-warpage, kunye nomgangatho womphezulu.
Ukunyuka kobunzima bodonga kukhokelela ekunyukeni kwexesha lomjikelo
Iinxalenye zeplastiki ezibunjiweyo zesitofu kufuneka zipholile ngokwaneleyo ngaphambi kokuba zikhutshwe kwi-mold ukuphepha ukuguqulwa kwemveliso ngenxa yokukhutshwa. Iindawo ezishinyeneyo zamalungu eplastiki zifuna amaxesha okupholisa amade ngenxa yamazinga asezantsi okufuduswa kobushushu, efuna ixesha elongezelelweyo lokuhlala.
Ngokwethiyori, ixesha lokupholisa lendawo enaliti ebunjiweyo lilingana nesquare sodonga olungqindilili kwelona ndawo lishinyeneyo. Ke ngoko, ubukhulu bodonga olutyebileyo buya kwandisa umjikelo wokutofa, ukunciphisa inani leenxalenye eziveliswayo ngexesha leyunithi, kwaye zonyuse iindleko ngenxalenye nganye.
Amacandelo atyebileyo athanda ukulwa
Ngethuba lenkqubo yokubumba i-injection, kunye nokupholisa, i-shrinkage yeendawo ezibunjiweyo zenaliti ziya kwenzeka ngokuqinisekileyo. Isixa sokuncipha kwemveliso sihambelana ngokuthe ngqo nodonga lwemveliso. Oko kukuthi, apho ubukhulu bodonga bukhulu, i-shrinkage iya kuba mkhulu; apho ubukhulu bodonga buncinci, i-shrinkage iya kuba yincinci. I-warpage yeendawo ezibunjiweyo zenaliti zihlala zibangelwa zizixa ezahlukeneyo zokushwabana kwiindawo ezimbini.
Amalungu amancinci, afanayo aphucula umgangatho womphezulu
Indibaniselwano yamacandelo abhityileyo natyebileyo aqhelene neziphumo zomdyarho kuba inyibilika ihamba ngokukhawuleza ecaleni kwecandelo elishinyeneyo. Isiphumo somdyarho sinokwenza iipokotho zomoya kunye nemigca ye-weld kumphezulu wenxalenye, okukhokelela kwimbonakalo embi yemveliso. Ukongeza, iindawo ezityebileyo zikwathandeka kwi-dents kunye ne-voids ngaphandle kwexesha elaneleyo lokuhlala kunye noxinzelelo.
Nciphisa inxalenye ubukhulu
Ukuze ucuthe amaxesha omjikelo, uphucule uzinzo lwe-dimensional, kunye nokuphelisa iziphene ezingaphezulu, umthetho osisiseko woyilo lobhontsi wenxalenye yoyilo lobungqimba kukugcina ubukhulu bendawo buncinci kwaye bufanayo kangangoko kunokwenzeka. Ukusetyenziswa kwee-stiffeners yindlela esebenzayo yokufezekisa ukuqina okufunekayo kunye namandla ngelixa uphepha iimveliso ezishinyeneyo.
Ukongeza kule nto, imilinganiselo yenxalenye kufuneka ithathele ingqalelo izinto eziphathekayo zeplastiki esetyenzisiweyo, uhlobo lomthwalo kunye neemeko zokusebenza inxalenye iya kuxhomekeka kuyo; kunye neemfuno zendibano yokugqibela nazo kufuneka ziqwalaselwe.
Oku kungasentla kukwabelana ngobunzima bodonga lweendawo ezibunjiweyo zesitofu.
Ixesha lokuposa: Jul-07-2022
