1, Imbangela ukuhlaziywa imikhiqizo umjovo ngokuhlaziya
Ukuqhekeka, kufaka phakathi ukuqhuma kwe-surface filiform, ukuqhekeka okuncane, okuphezulu okumhlophe, ukuqhekeka nokulimaza okubangelwe ukunamathela okufayo nokunamathela komgijimi, kungahlukaniswa kube ngokuqhekeka kokudiliza kanye nokuqhekeka kwesicelo ngokusho kwesikhathi sokuqhekeka. Izizathu eziyinhloko zimi kanje:
1）. Iyacubungula:
(1) Uma ingcindezi yokucubungula iphakeme kakhulu, ijubane lishesha kakhulu, lapho kugcwaliswa kakhulu impahla, futhi umjovo nesikhathi sokubamba ingcindezi side kakhulu, ukucindezela kwangaphakathi kuzoba kukhulu kakhulu futhi imifantu izokwenzeka.
(2) Lungisa isivinini sokuvula isikhunta nengcindezi ukuvimbela ukuqeda ukuqhekeka okubangelwa umdwebo osheshayo.
(3) Lungisa lokushisa isikhunta kahle ukwenza izingxenye lula demould, futhi ulungise lokushisa impahla kahle ukuvimbela ukubola.
(4) Vimbela ukuqhekeka ngenxa yamandla amancane omshini ngenxa yemigqa ye-weld nokucekelwa phansi kwepulasitiki.
(5) Ukusetshenziswa okufanele kwe-ejenti yokukhululwa kwesikhunta, naka ukuvimbela indawo evundlile enamathele ku-aerosol nezinye izinto.
(6) Ingcindezi eseleyo yezingxenye ingaqedwa ngokuncishiswa ngokushesha ngemuva kokwakha ukunciphisa ukukhiqizwa kwemifantu.
2）. Isikhunta:
(1) Ukukhishwa kufanele kube nokulinganisela, njengenombolo nendawo enqamulelayo yemigoqo ye-ejector kufanele yanele, ithambeka elidilikayo kufanele lanele, nendawo yomgodi kufanele ibe bushelelezi ngokwanele, ukuvimbela ukuqhekeka ngenxa yengcindezi eyinsalela ukuhlushwa okubangelwa amandla angaphandle.
(2) Ukwakheka kwengxenye akufanele kube mncane kakhulu, futhi ingxenye yenguquko kufanele yamukele ukuguqulwa kwe-arc ngangokunokwenzeka ukugwema ukucindezelwa kwengcindezi okubangelwa amakhona abukhali nama-chamfers.
(3) ukufakwa kwensimbi kufanele kusetshenziswe okuncane ngangokunokwenzeka ukuvimbela ukwanda kwengcindezi yangaphakathi ebangelwa amazinga e-shrinkage ahlukene wokufakwa nezingxenye.
(4) Ezingxenyeni ezijulile zangaphansi, kufanele kusethwe imbobo yokungena komoya efanele ukuvimbela ukwakheka kwengcindezi engezansi yomshini.
(5) I-sprue yanele ukucekela phansi ngaphambi kokuthi kuqiniswe impahla yesango, okulula ukuyidiliza.
(6) Ukuxhuma phakathi kwesihlahla se-sprue kanye nombhobho kufanele kuvimbele ukuhudulwa kwento ebandayo neqinile ekwenzeni izingxenye zinamathele kufayo olungisiwe.
3）. Izinto zokwakha:
(1) Okuqukethwe kwezinto eziphinda zenziwe kabusha kuphakeme kakhulu, okuholela emandleni aphansi ezingxenye.
(2) Umswakama ophakeme kakhulu ubangela ukusabela kwamakhemikhali phakathi kwamanye amapulasitiki nomphunga wamanzi, okunciphisa amandla futhi kubangele ukuqhekeka kwe-ejection.
(3) Indaba uqobo ayifanele indawo yokucubungula noma ikhwalithi ayiyinhle, futhi ukungcoliswa komhlaba kuzodala ukuqhekeka.
4）. Imishini:
Amandla weplastikhi womshini wokubumba umjovo kufanele afanele. Uma umthamo weplastikhi umncane kakhulu, uzoba brittle ngenxa yokungalingani kwepulasitiki nokuhlangana okungaphelele. Uma umthamo weplastikhi ukhulu kakhulu, uzokwehlisa isithunzi.
2, Imbangela ukuhlaziywa Bubbles e umjovo olubunjiwe imikhiqizo
Igesi le-bubble (i-vacuum bubble) lincane kakhulu futhi lingele-bubble vacuum. Ngokuvamile, uma i-bubble itholakele ngesikhathi sokuvulwa kwesikhunta, kungokwenkinga yokuphazanyiswa kwegesi. Ukwakheka kwe-bubble vacuum kungenxa yokugcwaliswa kwepulasitiki enganele noma ingcindezi ephansi. Ngaphansi kokupholisa okusheshayo kwesikhunta, kudonswa uphethiloli ekhoneni lomgodi, okuholela ekulahlekelweni kwevolumu.
imigomo yokuhlala:
(1) Thuthukisa amandla omjovo: ingcindezi, isivinini, isikhathi nobungako bezinto, futhi wandise ingcindezi yangemuva ukwenza ukugcwaliswa kugcwale.
(2) Khulisa lokushisa impahla, ukugeleza bushelelezi. Nciphisa izinga lokushisa lezinto ezibonakalayo, unciphise ukuncipha, futhi ukhuphule kahle ukushisa kwesikhunta, ikakhulukazi izinga lokushisa lesikhunta lendawo le-bubble.
(3) Isango lihlelwe engxenyeni enkulu yengxenye ukuthuthukisa isimo sokugeleza kombhobho, umgijimi nesango, nokunciphisa ukusetshenziswa kwengcindezi.
(4) Thuthukisa isimo isikhunta qeda.
3, Ukuhlaziywa kwe-warpage yezingxenye ezibunjiwe zomjovo
Ukusonteka, ukugoba nokuhlanekezelwa kwezingxenye ezibunjiwe zomjovo kubangelwa kakhulu ukuncipha okuphezulu kunkomba yokugeleza kunendlela ebheke mpo, okwenza izingxenye zisonteke ngenxa yokuncipha okuhlukile kuzo zonke izinkomba. Ngaphezu kwalokho, i-warping ibangelwa ukucindezeleka okukhulu kwangaphakathi okusele ezingxenyeni ngesikhathi sokubunjwa komjovo. Konke lokhu kungukubonakaliswa kwesiphutha okubangelwa ukucabanga okuphezulu kwengcindezi. Ngakho-ke, empeleni, idizayini enqunyiwe inquma ukuthambekela kwezingxenye zempi. Kunzima kakhulu ukubamba lo mkhuba ngokushintsha izimo ezakha. Isixazululo sokugcina senkinga kufanele siqale kusuka ekwakhiweni kokufa nasekuthuthukisweni. Lesi simo sibangelwa ikakhulu yizici ezilandelayo:
1）. Isikhunta:
(1) Ubukhulu nekhwalithi yezingxenye kufanele zifane.
(2) Uhlelo lokupholisa kufanele lwenzelwe ukwenza ukushisa kwengxenye ngayinye yomfaniswano wesikhunta somgogodla, uhlelo lwesango kufanele lwenze ukugeleza kwempahla kube okuhambisanayo, kugweme ukusonteka ngenxa yokugeleza okuhlukile nokuncipha kwesilinganiso, ngokufanele kushubise umgodi nomgudu omkhulu yengxenye enzima yokwakha, bese uzama ukuqeda umehluko wobuningi, umehluko wengcindezi nokwehluka kwamazinga okushisa emgodini wokubumbela.
(3) Indawo yenguquko kanye nekhona lobukhulu bengxenye kufanele bushelelezi ngokwanele futhi kube nokusebenza okuhle kokucekela phansi, njengokukhuphula ukudilizwa emsebenzini, ukwenza ngcono ukupholisha kwendawo yokufa, nokugcina ibhalansi yohlelo lokukhipha.
(4) Khipha kahle.
(5) Ngokwandisa ukushuba kwengxenye noma ngokwandisa ohlangothini olulwa ne-warping, amandla we-anti warping ale ngxenye athuthukiswa ngabaqinisa amandla.
(6) Amandla ento esetshenziswe ekubunjweni akwanele.
2）. Amapulasitiki:
Ngaphezu kwalokho, i-crystallinity yama-crystalline plastiki iyancipha ngokwanda kwezinga lokupholisa futhi ukuncipha kuncipha ukulungisa i-warpage.
3）. Iyacubungula:
(1) Uma ingcindezi yomjovo iphakeme kakhulu, isikhathi sokubamba side kakhulu, izinga lokushisa elincibilikayo liphansi kakhulu futhi ijubane lishesha kakhulu, ukucindezela kwangaphakathi kuzokwanda futhi kuzokwenzeka i-warpage
(2) Izinga lokushisa lesikhunta liphezulu kakhulu futhi isikhathi sokupholisa sincane kakhulu, okwenza izingxenye zishise ngokweqile futhi ziholele ekuguqulweni kokukhishwa.
(3) Ukuze unciphise ukukhiqizwa kwengcindezi yangaphakathi, isivinini se-screw kanye nengcindezi emuva kuyancishiswa ukunciphisa ukuminyana ngenkathi kugcinwa imali encane.
(4) Uma kunesidingo, izingxenye ezilula ukusonteka nokukhubazeka zingasethwa noma zonakaliswe, bese ilayisi lingabuyiselwa emuva.
4, Ukuhlaziywa umbala umugqa, umbala line futhi umbala iphethini imikhiqizo umjovo olubunjiwe
Yize ukuqina kombala, ubumsulwa bombala nokufuduka kombala kwe-masterbatch yombala kungcono kunaleyo yempuphu eyomile nodayi wokunamathisela, ukusatshalaliswa kwe-Colour Masterbatch, okungukuthi, ukufana okuxubene kombala we-masterbatch ekunciphiseni ipulasitiki kuqhathaniswa nokubi, nemikhiqizo eqediwe ngokwemvelo kunokuhlukahluka kombala wesifunda.
Izixazululo eziyinhloko zimi kanje:
(1) Khulisa ukushisa kwesigaba sokondla, ikakhulukazi izinga lokushisa langemuva kwesigaba sokondla, ukuze izinga lokushisa lisondele noma liphakame kancane kunokushisa kwesigaba esincibilikayo, ukuze i-masterbatch yombala incibilike ngokushesha ngangokunokwenzeka lapho ingena esigabeni sokuncibilika, khuthaza ukuxubana okufanayo nokuhlanjululwa, futhi wandise ithuba lokuxubana kuketshezi.
(2) Lapho isivinini se-screw silungisiwe, ukukhuphula ingcindezi yangemuva kungathuthukisa izinga lokushisa lokuncibilika nomphumela we-shear emgqonyeni.
(3) Shintsha isikhunta, ikakhulukazi uhlelo lwesango. Uma isango libanzi kakhulu, umphumela wesiyaluyalu uphansi futhi nokukhuphuka kwezinga lokushisa akulona phezulu lapho impahla encibilikile idlula, ngakho-ke umgodi webhande lombala awulingani, okufanele uncishiswe.
5, Imbangela ukuhlaziywa kokuncipha kokuncipha kwemijovo ebunjiwe imikhiqizo
Ngenqubo yokubumba umjovo, ukucindezelwa kokuncipha kuyinto ejwayelekile. Izizathu eziyinhloko zimi kanje
1）. Umshini:
(1) Lapho umgodi wombhobho mkhulu kakhulu, ukuncibilika kuzobuyela emuva bese kuncipha. Lapho imbobo yombhobho incane kakhulu, ukumelana kukhulu futhi inani lezinto ezibonakalayo alanele.
(2) Amandla okubamba anganele azokwenza ukuthi i-flash inciphe, ngakho-ke kuyadingeka ukuhlola ukuthi ngabe kukhona yini inkinga ohlelweni lokuqinisa.
(3) Uma inani le-plasticizing linganele, kufanele kukhethwe umshini onenani elikhulu le-plasticizing ukuhlola ukuthi isikulufa nomgqomo usugqokiwe yini.
2）. Isikhunta:
(1) Idizayini yezingxenye kufanele yenze umfaniswano wobukhulu bedonga futhi iqinisekise ukuncipha okufanayo.
(2) Uhlelo lokupholisa nokushisa lwesikhunta kufanele luqinisekise ukushisa okufanayo kwengxenye ngayinye.
(3) Uhlelo lwesango kufanele lubushelelezi, futhi ukumelana akufanele kube kukhulu kakhulu. Isibonelo, ubukhulu besiteshi esikhulu sokugeleza, ishaneli ye-shunt kanye nesango kufanele kube kufanelekile, ukuqeda kufanele kube ngokwanele, futhi indawo yenguquko kufanele ibe wuguquko lwe-arc.
(4) Ezingxenyeni ezincane, izinga lokushisa kufanele lenyuswe ukuqinisekisa ukugeleza kwezinto ezibushelelezi, nangenxa yezingxenye zodonga olujiyile, izinga lokushisa lesikhunta kufanele lehliswe.
(5) Isango kufanele livulwe ngokulinganisa, ngangokunokwenzeka odongeni olugqinsi lwezingxenye, futhi ivolumu yomthombo obandayo kufanele inyuswe
3）. Amapulasitiki:
Ukuncipha kwamaplastikhi amakhemikhali kuyingozi kakhulu kunamaplastikhi angewona amakristalu. Kuyadingeka ukukhulisa inani lezinto ezibonakalayo noma ukufaka i-ejenti yezinguquko kuplastikhi ukusheshisa i-crystallization nokunciphisa ukudangala okuncipha.
4）. Iyacubungula:
(1) Izinga lokushisa lomgqomo liphakeme kakhulu, ivolumu iyashintsha kakhulu, ikakhulukazi izinga lokushisa lesithando somlilo sangaphambili. Okwepulasitiki onamanzi ampofu, izinga lokushisa kufanele lenyuswe ngokufanele ukuqinisekisa ukusebenza kahle.
(2) Ukucindezela komjovo, isivinini, ingcindezi emuva kakhulu, isikhathi somjovo sifushane kakhulu, ukuze inani lezinto ezibonakalayo noma ukuminyana kunganele futhi kunciphe, ingcindezi, isivinini, ingcindezi yasemuva inkulu kakhulu, yinde kakhulu imbangela nokuncipha.
(3) Lapho isiguqo sikhulu kakhulu, ingcindezi yomjovo izosetshenziswa. Lapho isiguqo sincane kakhulu, ingcindezi yomjovo izobe inganele.
(4) Ezingxenyeni ezingadingi ukucaciswa, ngemuva kokulungiswa komjovo nokucindezelwa, ungqimba lwangaphandle ngokuyisisekelo luye lwajiyiswa futhi lwaqina, kanti ingxenye yesangweji ithambile futhi ingakhishwa, isikhunta kufanele sisuswe ngokushesha okukhulu ukukuvumela ukupholisa kancane emoyeni noma emanzini ashisayo, ukuze ukucindezeleka kwe-shrinkage kube bushelelezi futhi kungabonakali kangako, futhi ukusetshenziswa kungathinteki.
6, Imbangela ukuhlaziywa kwamaphutha asobala emikhiqizweni ebunjiwe yomjovo
Izingxenye ezisobala zendawo encibilikayo, i-craze, i-crack, i-polystyrene kanye ne-plexiglass kwesinye isikhathi zingabona isitili esikhazimulayo esifana nemicu ekukhanyeni. Lezi zinhlanya zibizwa nangokuthi izindawo ezikhanyayo noma imifantu. Lokhu kungenxa yengcindezi ekuqondeni okuqondile kokucindezela kokuqina, nomehluko wephesenti lama-molecule e-polymer anokuma ngaphandle kokuhamba.
isisombululo:
(1) Susa ukuphazamiseka kwegesi nokunye ukungcola, bese womisa ngokuphelele ipulasitiki.
(2) Nciphisa izinga lokushisa kwento, ulungise ukushisa komgqomo ngezigaba, futhi wandise ukushisa kwesikhunta ngokufanele.
(3) Khulisa ingcindezi yomjovo wehlise ijubane lomjovo.
(4) Khulisa noma wehlise ingcindezi yangemuva yokubumba kwangaphambili, ukunciphisa isivinini se-screw.
(5) Thuthukisa isimo qeda umgijimi kanye umgodi.
(6) Hlanza umlomo wombhobho, umgijimi kanye nesango lokuvinjelwa okungenzeka.
(7) Ngemuva kokucekelwa phansi, ubuhlalu bungaqedwa ngokuncishiswa: i-polystyrene ingagcinwa kuma-78 ℃ imizuzu eyi-15, noma ku-50 ℃ ngehora eli-1, futhi i-polycarbonate ingashiswa ifike ku-160 ℃ imizuzu embalwa.
7, Imbangela ukuhlaziywa umbala engalingani imikhiqizo umjovo olubunjiwe
Izimbangela eziyinhloko nezixazululo zombala ongalingani wemikhiqizo ebunjiwe yomjovo zimi kanje:
(1) Ukusabalalisa okungafanele kwe-colorant, okuvame ukwenza iphethini eduze kwesango.
(2) Ukuzinza okushisayo kwamapulasitiki noma ama-colorants akukuhle. Ukuze uzinze ithoni yombala yemikhiqizo, izimo zokukhiqiza kumele zilungiswe ngokuqinile, ikakhulukazi ukushisa kwempahla, ubuningi bezinto nomjikelezo wokukhiqiza.
(3) Kuma-plastiki amakhemikhali, izinga lokupholisa lengxenye ngayinye yezingxenye kufanele lilingane ngangokunokwenzeka. Ezingxenyeni ezinomehluko omkhulu wobudonga, i-colorant ingasetshenziselwa ukufihla umehluko wombala. Ezingxenyeni ezinobukhulu obufanayo bodonga, izinga lokushisa lezinto ezibonakalayo nokushisa kwesikhunta kufanele kulungiswe.
(4) Kuyadingeka ukuguqula indawo nokugcwalisa ifomu lepulasitiki.
8, Imbangela ukuhlaziywa umbala kanye luster ukukhubazeka imikhiqizo umjovo olubunjiwe
Ngaphansi kwezimo ezijwayelekile, isicwebezelisi esingaphezulu sezingxenye zomjovo ezibunjiwe ikakhulukazi sinqunywa uhlobo lweplastiki, umbala kanye nokuqedwa kobuso. Kepha kaningi ngenxa yezinye izizathu ezithile, umbala ongaphezulu nokukhubazeka okucwebezelayo kwemikhiqizo, kumnyama ebusweni nokunye ukukhubazeka. Izimbangela nezixazululo zimi kanje:
(1) sekugcineni Poor isikhunta, nokugqwala ebusweni komgodi, qeda abampofu isikhunta.
(2) Uhlelo lokuthela lwesikhunta alunasici, ngakho-ke kuyadingeka ukwandisa umthombo opholile, ukugeleza kwesiteshi, ukupholisha isiteshi sokugeleza okuyinhloko, ishaneli ye-shunt nesango.
(3) Ukushisa kwempahla nokushisa kwesikhunta kuphansi, uma kunesidingo, indlela yokushisa yendawo yesango ingasetshenziswa.
(4) Ukucindezela ukucubungula kuphansi kakhulu, isivinini sihamba kancane, isikhathi somjovo asanele, ingcindezi yangemuva ayanele, okuholela ekubumbaneni okuncane nobuso obumnyama.
(5) Amapulasitiki kufanele afakwe kupulasitiki ngokuphelele, kepha ukonakala kwezinto kufanele kuvinjelwe, ukufudumeza kufanele kuzinze, nokupholisa kufanele kube kwenele, ikakhulukazi kuma-plastiki odonga aminyene.
(6) Ukuvimbela izinto ezibandayo ukungena ezingxenyeni, sebenzisa intwasahlobo yokuzikhiya noma ukunciphisa izinga lokushisa lombhobho lapho kudingeka.
(7) Kusetshenziswa izinto eziningi ezenziwe kabusha, ikhwalithi yamapulasitiki noma imibala ayilutho, umhwamuko wamanzi noma okunye ukungcola kuxubekile, nekhwalithi yamafutha okugcoba ayimbi.
(8) Amandla okubamba kufanele anele.
9, Imbangela ukuhlaziywa craze e umjovo olubunjiwe imikhiqizo
Kukhona ama-craze emikhiqizweni yokubumba umjovo, kufaka phakathi amagwebu angaphezulu nama-pores angaphakathi. Imbangela enkulu yokukhubazeka ukuphazamiseka kwegesi (ikakhulukazi umhwamuko wamanzi, igesi yokubola, igesi kuphela kanye nomoya). Izizathu ezithile zimi kanje:
1）. Umshini:
(1) Umgqomo nesikulufu kugqokiwe, noma kukhona i-engeli efile yokugeleza kwempahla lapho bedlula ekhanda lenjoloba nakwiringi yenjoloba, ezobola lapho ishiswa isikhathi eside.
(2) Uma uhlelo lokushisa lungalawuleki futhi nezinga lokushisa liphezulu kakhulu, kuyadingeka ukubheka ukuthi ngabe kukhona yini inkinga ngezinto zokushisa ezifana ne-thermocouple ne-coil yokushisa. Ukuklanywa kwesikulufa akulungile, okuholela kusisombululo noma kube lula ukuletha umoya.
2）. Isikhunta:
(1) Ukukhipha okungafanele.
(2) Ukumelana kokungqubuzana komgijimi, isango nomgodi kusikhunta kukhulu, okubangela ukushisa kwendawo nokubola.
(3) Ukusatshalaliswa okungalingani kwesango nomgodi kanye nesistimu yokupholisa engenangqondo kuzoholela ekushiseni okungalinganiseli kanye nasendaweni eshisa ngokweqile noma ekuvinjelweni kokudlula komoya.
(4) Indlela yokupholisa iyavuza ingene emgodini.
3）. Amapulasitiki:
(1) Uma umswakama wepulasitiki uphezulu, inani lezinto ezenziwe kabusha likhulu kakhulu noma kunezinsalela eziyingozi (izigaxa kulula ukubola), amapulasitiki kufanele omiswe ngokuphelele futhi okusikiwe kufanele kususwe.
(2) Ukumunca umswakama osusemkhathini noma ovela kumbala ogqamile, umbala ogqamile nawo kufanele womiswe. Kungcono ukufaka isomisi emshinini.
(3) Inani lezinto zokugcoba kanye nezinto zokuqinisa ezifakwe kuplastikhi likhulu kakhulu noma lixubeke ngokungalingani, noma amapulasitiki anezinyibilikisi eziguquguqukayo. Lapho izinga lokushisa lepulasitiki elixubekile kunzima ukulibheka, lizobola.
(4) Ipulasitiki ingcolile futhi ixutshwe namanye amapulasitiki.
4）. Iyacubungula:
(1) Lapho usetha ukushisa, ingcindezi, isivinini, ingcindezi emuva, isivinini esikhulu kakhulu sokuncibilika kweglue kubangela ukubola, noma lapho ingcindezi nesivinini siphansi kakhulu, isikhathi somjovo, ukubamba ingcindezi akwanele, nengcindezi yangemuva nayo okuphansi, ngenxa yokushoda kwengcindezi ephezulu nokuxinana okunganele, akunakwenzeka ukuncibilikisa igesi, okuholele ekukhuleni. Izinga lokushisa elifanele, ingcindezi, isivinini nesikhathi kufanele kusethwe, futhi kufanele kwamukelwe isivinini somjovo weziteji eziningi
(2) Ukucindezela emuva okuphansi nesivinini sokujikeleza esisheshayo kwenza umoya ungene emgqonyeni kalula. Njengoba into encibilikisiwe ingena ekubunjweni, okokuncibilikisa kuzobola lapho kushiswa isikhathi eside kakhulu emgqonyeni lapho umjikelezo umude kakhulu.
(3) Ubuningi bezinto ezinganele, i-buffer enkulu kakhulu yokudla, izinga lokushisa eliphansi kakhulu noma ukushisa kwesikhunta okuphansi kakhulu kuthinta ukugeleza kwempahla nokwenza ingcindezi, futhi kukhuthaze ukwakheka kwamabhamuza.
10, Ukuhlaziywa ngembangela yokuhlanganiswa kwe-fusion kwimikhiqizo yepulasitiki
Lapho amapulasitiki ancibilikile ehlangana emgodini ngendlela yemicu eminingi ngenxa yomgodi okufakiwe, indawo ene-velocity yokugeleza engaqhubeki nendawo enendawo yokugeleza kokugcwaliswa kwezinto, ukuhlangana okuqondile komugqa kuzokhiqizwa ngenxa yokuhlangana okungaphelele. Ngaphezu kwalokho, uma kwenzeka ukugcwaliswa kwesikhunta somjovo wesango, kuzoba nokuhlangana kwe-fusion, futhi amandla okuhlangana kwe-fusion ahlwempu kakhulu. Izizathu eziyinhloko zimi kanje
1）. Iyacubungula:
(1) Ingcindezi nomjovo ophansi kakhulu, ukushisa komgqomo okuphansi kakhulu kanye nokushisa kwesikhunta kuholela ekupholiseni ngaphambi kwesikhathi kwento encibilikisiwe kwisikhunta, okuholela ku-weld seam.
(2) Lapho ingcindezi yomjovo nesivinini kuphakeme kakhulu, kuzoba nokuhlangana kwesifutho nokuhlanganiswa.
(3) Kuyadingeka ukukhuphula ijubane lokujikeleza nengcindezi yangemuva ukunciphisa i-viscosity nokukhulisa ukuminyana kwamapulasitiki.
(4) Ipulasitiki kufanele yomiswe kahle, izinto ezenziwe kabusha kufanele zisetshenziswe kancane, i-ejenti enkulu kakhulu yokukhipha noma ikhwalithi engemihle nayo izovela ihlangene.
(5) Yehlisa amandla okubamba, kulula ukuqeda.
2. Isikhunta:
(1) Uma kunamasango amaningi kakhulu emgodini ofanayo, amasango kufanele ancishiswe noma asethwe ngokulingana, noma asethwe aseduze nejoyinti le-weld ngangokunokwenzeka.
(2) Isistimu yokukhipha kufanele isethwe e-seam ye-fusion embi.
(3) Umgijimi mkhulu kakhulu, ubukhulu bohlelo lwesango abulungile, isango kufanele livulwe ukugwema ukuncibilika okugeleza kuzungeze imbobo ye-insert, noma okufakiwe kufanele kusetshenziswe kancane ngangokunokwenzeka.
(4) Uma ukushuba kodonga kushintsha kakhulu, noma ukushuba kodonga kuncane kakhulu, ukushuba kodonga lwezingxenye kufanele kufane.
(5) Uma kunesidingo, umthombo we-fusion kufanele usethwe ejoyintini le-fusion ukwenza ukuhlangana kwe-fusion kwehlukane nezingxenye.
3. Amapulasitiki:
(1) Amafutha nezithambisi kufanele zengezwe kuplastikhi okungamanzi kahle noma okuzwela ukushisa.
(2) Kunokungcola okuningi kuplastikhi. Uma kunesidingo, esikhundleni sawo ufake amapulasitiki asezingeni elifanele.
11, Ukuhlaziywa kwezimbangela zezimpawu zokuxoxa emikhiqizweni ebunjiwe yomjovo
I-PS nezinye izingxenye zepulasitiki eziqinile esangweni layo eliseduze kwendawo engaphezulu, nesango liyisikhungo sokwakhiwa kokuqina okukhulu, kwesinye isikhathi okwaziwa ngokuthi ukuxoxa. Isizathu ukuthi lapho i-viscosity encibilikayo iphakeme kakhulu futhi isikhunta sigcwaliswa ngendlela yokugeleza okungamile, izinto zangaphambili-phambili zizohlangana futhi zivume ngokushesha lapho ixhumana nobuso besikhala sesikhunta, futhi ukuncibilika kwamuva kuzokwanda , futhi izinto ezibandayo ezinenkontileka zizoqhubeka nokuqhubekela phambili. Ukushintshana okuqhubekayo kwenqubo kwenza ukugeleza kwempahla kube yinto engaphezulu.
isisombululo:
(1) Ukuze kwandiswe izinga lokushisa lomgqomo, ikakhulukazi ithumbu lokushisa, izinga lokushisa lesikhunta kufanele futhi lenyuswe.
(2) Khulisa ingcindezi yomjovo nesivinini ukuyenza igcwalise umgodi ngokushesha.
(3) Thuthukisa usayizi womgijimi nesango ukuvimbela ukumelana okweqile.
(4) Isikhunta sokukhipha ukuze silunge, ukusetha umthombo omkhulu obandayo ngokwanele.
(5) Musa ukuklama izingxenye zibe mncane kakhulu.
12, Imbangela yokuhlaziywa kokuvuvukala nokubhoboza imikhiqizo yomjovo
Ngemuva kokudilizwa, ezinye izingxenye zepulasitiki ziyavuvukala noma ibhamuza ngemuva kokufakwa kwensimbi noma engxenyeni ejiyile kakhulu. Lokhu kungenxa yokwanda kwegesi ekhishwe kupulasitiki opholile kancane futhi oqinile ngaphansi kwesenzo senhlawulo yangaphakathi yengcindezi.
Izixazululo:
1. Ukupholisa okuphumelelayo. Nciphisa izinga lokushisa lesikhunta, nweba isikhathi sokuvula isikhunta, ukunciphisa ukomisa nokucubungula izinga lokushisa kwendaba.
2. Nciphisa isivinini sokugcwalisa, ukwakha ukumelana nokugeleza kokugeleza.
3. Khulisa ingcindezi yokubamba nesikhathi.
4. Thuthukisa isimo sokuthi udonga lwengxenye lukhulu kakhulu noma ubukhulu buguquka kakhulu.
