Ulwazi lokupakisha

Intshayelelo: Inaliti ebumbayo yeyona nkqubo iphambili kwizixhobo zokupakisha imifanekiso. Inkqubo yokuqala ihlala inesifo senaliti, egqiba ngokuthe ngqo umgangatho kunye nemveliso. Ukumiselwa kwenkqubo yokuxhuzula inaliti kufuneka kuthathelwe ingqalelo izinto ezi-7 ezinje ngokususa, i-flostity, i-crystallies, iplasitiki kwaye inyibilike kwaye inyibilike kwaye inyibilike inyibilike, kunye nenqanaba lokufuma, kunye nenqanaba lokufuma, kunye nenqanaba lokufuma, kunye nenqanaba lokufuma, kunye nereyithi yokufuma, kunye nokuthandwa. Eli nqaku libhalwe nguIphakheji ye-shanghai yemvula. Yabelana ngomxholo ofanelekileyo kwezi zinto zi-7, kwireferensi yabahlobo bakho kwi-chain yonikezo ye-UWPPIN:

Inaliti yokubumba
Inaliti yokubumba, ekwabizwa ngokuba yintsholongwane, yindlela yokubumba edibanisa inaliti kunye nokubumba. Izibonelelo zeendlela zokubumba zenaliti ziyakhawuleza zemveliso, ukusebenza ngokukuko, ukusebenza kunokubangela ukuba imibala ye-automation, ubungakanani kunokuba yinto enkulu ukuya kuthi ga kwimveliso echanekileyo, imveliso yemveliso ichanekile, imveliso yemveliso ichanekile, imveliso Kulula ukuhlaziya, kwaye inokwenziwa kwiimilo ezintsonkothileyo. Iinxalenye kunye nenaliti yokubumba zilungele ukuveliswa kobuninzi kunye nokubumba imihlaba yokuqhubela njengemveliso enemilo enzima. Kubushushu obuthile, izixhobo zeplastiki ezinyibilikisiweyo zinyibilikisiwe sisikere, zigcinwe kwi-mold cavity ngoxinzelelo oluphezulu, kwaye zipholile kwaye ziqinile ukufumana imveliso ebunjiweyo. Le ndlela ilungele ukuveliswa kobuninzi beenxalenye ezinemilo entsonkothileyo kwaye yenye yeendlela ezibalulekileyo zokulungisa.

01
I-shrinkage
Izinto ezichaphazela i-shrinkage ye-thermoplaec yezihloko zezi zilandelayo:

I-1) Iindidi zeplastiki: Ngexesha lokubumba kwePlastiki yeThermoplastic, kusekho uxinzelelo lwevolumu ezibangelwa kukuziqhelanisa, uxinzelelo lwangaphakathi, uxinzelelo lwentsalela enkulu kunye nezinye izinto, zizodwa Ireyithi inkulu, uluhlu lwe-shrinkage lubanzi, kwaye i-FORTE icacile. Ukongeza, i-shrinkage emva kokubumba, imeko yokuthambisa okanye yokufuma okanye ngokubanzi inkulu kuneyona nto iphambili kwiplasitiki. 

2) Iimpawu zenxalenye yeplastiki. Xa izinto ezityhidiweyo zinxibelelana nomphezulu we-cavity, umaleko wangaphandle ukhululekile ukwenza iqokobhe eliqinisekileyo. Ngenxa yokuqhubela phambili kweplastiki yeplasitiki, umaleko wangaphakathi wenxalenye yeplastiki kupholile ngokuthe ngcembe ukwenza ungqimba oluqinileyo nge-shrintage enkulu. Ke ngoko, ubukhulu bomhlaba, ukuphola kancinci, kunye nobunzima obungaxinezeli buya kuncipha ngakumbi.

Ukongeza, ubukho okanye ukungabikho kokufakwa kunye nokubekwa kunye nobume kunye nenani lokufakwa ngokuthe ngqo kuchaphazela ngqo indlela yokuhamba kwezinto, ukusasazeka kwe-shrintage kunye nokuchaswa kweShrintage. Ke ngoko, iimpawu zeenxalenye zeplastiki zinempembelelo enkulu kwi-shrinkage kunye nesalathiso.

I-3) Ezo zinto zifana nefom, ubukhulu, kunye nokusasazwa kwe-inlet ye-Inflet echaphazela ngokuthe ngqo indlela yokuhamba kwezinto, ukusasazwa kokusasazwa, uxinzelelo lusebenza kunye nokuncipha kwexesha. I-Prestorat your Surts kunye nezibukondla ezinamacandelo amakhulu (ngakumbi amacandelo anqamlezileyo) zinokuncitshiswa okuncinci kodwa imiyalezo enkulu yokutya kunye nobude obufutshane kunye nobude obungaphantsi. Ezo zikufutshane ne-Comfel kwi-Interlet okanye ngokuhambelana nendlela yokuhamba kwezinto ziya kuncipha ngakumbi.

4) Iimeko zokuBuyela amaqondo obushushu obubumba iphezulu, izinto ezityhidiweyo zipholile kancinci, uxinzelelo luphezulu, kwaye i-shrinkage inkulu. Ingakumbi kwizinto zekristali, i-shrinkage inkulu ibangelwa kukukhanya okuphezulu kunye notshintsho lwevolumu enkulu. Usasazo lobushushu obubunjiweyo luhambelana nokupholisa ngaphakathi nangaphandle kunye nokuxinana kwenxalenye yenxalenye yeplastiki, echaphazela ngqo ubungakanani kunye nolwalathiso lokuhluma kwenxalenye nganye.

Ukongeza, ukubambelela uxinzelelo kunye nexesha nenempembelelo enkulu ekuchaseni, kwaye isivumelwano sincinci kodwa uxinzelelo luphezulu kwaye ixesha lide. Ingcinezelo yenaliti iphezulu, ukunyibilikisa umahluko we-vicosity mncinci, uxinzelelo loShilo loShishinali luncinci, kwaye ukuphinda kwenziwe i-sheastic rebound emva kokudilizwa kuphakathi, ke i-shrinkage inokuncitshiswa ngesixa esifanelekileyo. Ubushushu bezinto eziphathekayo buphakamile, i-shrinkage inkulu, kodwa ukubakho kolwando luncinci. Ke ngoko, ukuhlengahlengisa ubushushu obubumba, uxinzelelo, isantya sokupholisa kunye nexesha lokupholisa ngexesha lokubumba kunokutshintsha ngokufanelekileyo ukuntywila kwenxalenye yenxalenye yeplastiki.

Xa uyila isikhunta, ngokweendawo ze-shrinkgege yeplastiki eyahlukeneyo, ubukhulu becala kwinxalenye yeplastiki, ubungakanani benxalenye nganye yenxalenye nganye yenxalenye yeplastiki igqitywe ngokwemigangatho, kwaye Ke ubungakanani be-cavity ubalwa.

Kwinxalenye yeplastiki ekhethekileyo yeplastiki kwaye xa kunzima ukuyiqonda ireyithi ye-shrinkige, ezi ndlela zilandelayo kufuneka zisetyenziselwe ukuyila i-mold:

Thatha ireyithi encinci ye-shrinkige yohlobo lwangaphandle lwenxalenye yeplastiki, kunye nenqanaba le-shrinkage enkulu kwi-wameter engaphakathi, ukuze ishiye igumbi lokulwa emva kovavanyo emva kokubumba emva kovavanyo.

I-HORDY YAMAHLUKO ESIFANELEKILEYO IFOMU, ubungakanani kunye neemeko zokubumba kwinkqubo ye-Gating.

Inxalenye yeplastiki isetyenzisiwe emva kokuba ifakwe iposti yokutshintsha ukumisela ubungakanani bobukhulu (umlinganiselo kufuneka ube ziiyure ezingama-24 emva kokudilizwa).

Lungisa ukubumba ngokwendlela yokwenyani.

Phinda uzame ubumba kwaye ngokufanelekileyo utshintsha iimeko zenkqubo ukutshintsha kancinci ixabiso le-shrinkage ukuhlangabezana neemfuno zenxalenye yecandelo leplastiki.

02
ulwalamano
1) Ulwelo lwe-Thermoplastics lunokuhlaziywa luluhlu lwesalathiso esifana nemolekyuli, i-melt Index, i-vider ye-Spirals, i-vick vick / iplastiki yodonga lweplastiki).

Ubunzima obuncinci bemolekyuli, ukuhanjiswa kwesilinganiselo esikhulu semolekyuli, imeko yemolekyuli engalunganga, ubude be-Spiral, ukubonakala kwe-spiting ephezulu, i-vidionals ephantsi, i-ratious ephantsi, i-ratious ebonakalayo, i-ratious eqondakalayo, i-ratimity yegama elifanayo kufuneka iqwalasele imiyalelo yabo isebenza kwinaliti yokubumba. 

Ngokweemfuno zoyilo loyilo, ulwelo lweplastiki eziqhelekileyo zinokusetyenziswa ngokulinganayo zangamacandelo amathathu:

I-Pe, Pe, PS, iphe, ca, poly (4) I-methylpene;

I-Rellystrene ye-Polystyrene (njenge-ABS, njenge), i-PMMA, i-POM, i-polyphenyne ether;

I-PCIRE YORMT SLT, i-PVC enzima, iPolyphenyne Ether, Polysulfone, PolysulsullUne, Fluoroplastics.

2) Ulwelo lweeplastiki ezahlukeneyo nazo ziyatshintsha ngenxa yezinto ezahlukeneyo zobumba. Izinto eziphambili ezenziweyo zezi zilandelayo:

Ubushushu bezinto eziphathekayo ze-①ngiger bunyusa ulwalamano, kodwa iiplanga ezahlukeneyo zinokwahluka kwabo, ezinje nge-PS (ingakumbi abo banolwazelelelo lwempindezelo kunye ne-PP, i-PP, i-PMMA, i-ABS, i-PC , I-CA kunye nezinye iiplasitiki ziyahluka kakhulu kubushushu. Kwi-PE kunye ne-POM, ukunyuka kobushushu okanye ukwehla akunampembelelo kulwelo lwabo. Ke ngoko, lowo wangaphambili makahlengahlengise amaqondo obushushu ngexesha lokubumba ukulawula ulwaluko. 

I-②wu ingcinezelo yokubuyisa inaliti inyuswe, i-molle etyhidiweyo isebenza nzima, kwaye ulwelo luyenyuka, ngakumbi i-POM inovelwano, ke i-POM inoxinzelelo olukhulu ukuba ilungiswe.

Ifom, ubungakanani, ubume, uyilo lwenkqubo yokupholisa, ukunyangwa kwempahla ehambayo (njengokuphela kwecandelo le-wilnel, inkqubo ye-cavity, inkqubo yokuphelisa) kunye nezinye izinto ngokuthe ngqo kunye nezinye izinto ngokuthe ngqo kunye nezinye izinto ngokuthe ngqo kunye nezinye izinto ngokuthe ngqo Phatha izinto ezityhidiweyo kwi-cavenity yolwelo ngaphakathi, ukuba i-mollen iphakanyiswa ukuthoba ubushushu kwaye inyuse ukunyangwa kolwenzi, ulwelo luyancipha. Xa uyila i-sold, isakhiwo esifanelekileyo kufuneka sikhethwe ngokobuqu lweplastiki esetyenzisiweyo.

Ngexesha lokubumba, ubushushu obonakalayo, ubushushu obubumba, uxinzelelo lwenaliti, isantya senaliti kunye nezinye izinto zinokulawulwa ngokufanelekileyo ukuba ihlengahlengise iimfuno zokugcwalisa.

03
I-Crystallity
I-TheRMOPICS inokwahlulwa ibe yiplanga ye-crystalline kunye ne-non-tharistalline (ebizwa ngokuba yi-amorphous) ye-amorphous) yeplasitiki ngokwazo ngaphandle kwe-certiment. 

I-cenomeli yokuziqhelanisa nokuziqhelanisa nokuziqhelanisa nokubhekiswa kwinto yokuba xa iplastiki ivela kwimeko enyikimayo ukuya kwimogaqo, iimolekyuli zihamba ngokuzimeleyo kwaye zikwimeko engagungqiyo. Iimolekyuli ziyeka ukuhamba ngokukhululekileyo, cinezela isikhundla esisigxina, kwaye ube notyekelo lokwenza ulungiselelo lweemolekyuli imodeli eqhelekileyo. Le nto.

Inkangeleko yokujonga ukugweba ezi ntlobo zimbini zeplastiki zingagqitywa ngokubonakala kwezinto ezinqabileyo zeplastiki. Ngokubanzi, izixhobo zekristali ze-opaque okanye i-translucent (njenge-POM, njl njl), kunye nezinto ze-amor. Njl. Kodwa ziyahlukaniswa. Umzekelo, i-Poly (4) I-methylpenene yiplastiki ye-crystalline kodwa inezinto ezibonakalayo, kwaye i-ABS sisixhobo se-amorokis kodwa esingabonakali ngokucacileyo.

Xa uyilo lweembumbulu kwaye ukhetha oomatshini bokubumba, banikele ingqalelo kwezi mfuno zilandelayo kunye namanyathelo okhuseleko kwiPlastaline:

Ubushushu obufunekayo ukuphakamisa ubushushu bezinto ezibonakalayo kwiqondo lobushushu lufuna ubushushu obuninzi, kunye nezixhobo ezinomthamo omkhulu wokuprinta uyafuneka.

Inani elikhulu lobushushu likhutshwe ngexesha lokupholisa kunye nokudibana kwakhona, ke kufuneka kuthotyelwe ngokwaneleyo.

Umahluko othile wobume phakathi kwemeko etyhidiweyo kunye nemeko eqinileyo inkulu, i-shrinking eqinileyo inkulu, kwaye i-shrinkage kwaye pores ithathelwe ukuba kwenzeke.

Ukupholisa ngokukhawuleza, i-crystallity ye-crystallity, i-shrinkige encinci kunye nokungafihli nto. I-crystallies ihambelana nobunzima becandelo leplastiki, kwaye ubukhulu becala bucotha ukupholisa, i-crystallies iphezulu, i-shrinkage inkulu, kwaye iipropathi ezibonakalayo zilungile. Ke ngoko, ubushushu obubumba kwizinto zekristali kufuneka zilawulwe njengoko kufuneka.

I-anisotropy ibalulekile kwaye uxinzelelo lwangaphakathi lukhulu. Iimolekyuli ezingakhange zibilisiwe emva kokudilizwa ukuba zinotyekelo lokuqhubeka nokuma kwe-crystalize, zikwimeko yokungalingani kwamandla, kwaye zithanda ukungcungcuthekiswa kunye nemfazwe.

Uluhlu lobushushu lwamaqondo obushushu luxinekile, kwaye kulula ukubangela izinto ezingachazwanga zifakwe kwi-mold okanye ivimba izibuko lokutya. 

04
Iplasitiki ebuthathaka
1) Imvakalelo yobushushu ithetha ukuba ezinye iiplastiki zinovelwano ngakumbi kubushushu. Ziya kuphoselwa ixesha elide kubushushu obuphezulu okanye icandelo lokuvula lotyalo lincinci kakhulu. Xa isiphumo sokucheba sikhulu, iqondo lobushushu liya kunyuka ngokulula ukubangela ukufunyanwa, ukonakaliswa kunye nokubola. Iplasitiki yeplasitiki ibizwa ngokuba yiplastiki yobushushu.

Enje nge-PVC enzima, i-polyvinylidene phelorder, i-vinyl acetate copolymer, i-Pom, iPolyChlotrotriiene, njl njl. Njl. Ngokukodwa, ezinye iigesi ezingenamsebenzi zicaphukisa, zityhafise okanye ziyityhefu kwimizimba yomntu, izixhobo, kunye nokubumba.

Ke ngoko, ingqalelo kufuneka ihlawulwe ukubumba uyilo, inaliti yoKhetho lokuBumba kunye nokubumba. Inaliti yejeyi yejeyi yejeli kufuneka isetyenziswe. Icandelo lenkqubo yokuthulula kufuneka ibe likhulu. Ubumba kunye ne-barrel kufuneka zibekwe i-chrome-iprome. Yongeza i-stabilizer ukwenza buthathaka imvakalelo yayo ye-thermal. 

2) Nokuba ezinye iiplanga (ezinjenge-PC) ziqulethe inani elincinci lamanzi, ziya kubola phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu. Le ndawo ibizwa ngokuba lula i-hydrolysis, ekufuneka ifudumele kwaye yomiswe kwangaphambili.

05
Uxinzelelo lwe-rackert kwaye lunyibilike
1) Ezinye iiplastiki zinomdla kuxinzelelo. Bathambekele kuxinzelelo lwangaphakathi ngexesha lokubumba kwaye babrittle kwaye kulula ukuqhekeza. Inxalenye yeplastiki iya kuqhekeza phantsi kwesenzo samandla angaphandle okanye isoyile. 

Ngesi sizathu, ukongeza ukongeza i-songers kwizinto ezingafunekiyo ukuphucula ukunganyangeki kwe-raw, kuthathelwe ingqalelo ukomisa izinto ezingafunekiyo, kwaye iimeko zokubumba kufuneka zikhethwe ngokugqibeleleyo ukunciphisa uxinzelelo lwangaphakathi kunye nokunyusa ukunganyangeki kwangaphakathi. Kwaye kufuneka ukhethe ubume obufanelekileyo wezinto zeplastiki, akufaneleki ukufaka ukufaka kunye namanye amanyathelo okunciphisa uxinzelelo loxinzelelo.

Xa uyilo lwe-MOLD, i-angle yedisding kufuneka inyuswe, kwaye indlela ye-inlet ye-inlet yokutya ye-inflet kunye ne-curication kufuneka ikhethwe. Iqondo lobushushu lezinto eziphathekayo, amaqondo obushushu omnyama, uxinzelelo lwenaliti kunye nexesha lokupholisa kufuneka luhlengahlengiswe ngokufanelekileyo xa lubumbayo, emva kokubumba, iinxalenye zeplastiki kufuneka ziphucule Ukunganyangeki, kuphelisa uxinzelelo lwangaphakathi kwaye kuthintele ukunxibelelana nezinyibilikisi. 

2) Xa ipollymer inyibilike nge-metrey eqingqiweyo kwi-Inzy Hole kwiqondo lokushisa elihamba rhoqo kunye nexabiso layo lokuhamba ligqitha kwi-melt ibizwa ngokuba yimbonakalo kwaye iyakonakalisa imbonakalo kwaye iyakonakalisa imbonakalo kunye iipropathi zomzimba zenxalenye yeplastiki. Ke ngoko, xa ukhetha i-polymers ngereyithi ephezulu yokuhamba, icandelo le-nozzle, imbaleki, kunye nokuvulwa kwembaleki, kunye nokuvulwa kwembaleki kufanele kukhuliswe ukuze kuncitshiswe isantya sesantya senzala.

06
Umsebenzi we-thermal kunye nenqanaba lokupholisa
1) Iiplastiki ezahlukeneyo zinepropathi ye-thermal eyahlukeneyo efana nobushushu obuthile, ukuqhubela phambili kwengqondo, kunye nobushushu obushushu obushushu. Ukufaka iplastiki ngobushushu obuthile obuthile kufuna ubungakanani obukhulu, kunye nomatshini wokubumba amantshontsho onomthamo omkhulu weplastiki kufuneka usetyenziswe. Ixesha lokupholisa leplastiki elinobushushu obuphakathi lobushushu obungapheliyo zinokuba mfutshane kwaye iDolides iqale kwangoko, kodwa ukungcungcutheka kuya kuthintelwa emva kokudilizwa.

Iplastiki enemigangatho yokuphola ephantsi inomgangatho wokuphola ocothayo (njenge-ionic polymers, njl.), Ke kufuneka bapholelwe ngokwaneleyo ukonyusa isiphumo sokupholisa. I-runner eshushu i-runners ilungele iiplastiki ngobushushu obuthile obuthile kunye nokuqhutywa kwe-thermas ephezulu. Iplastiki ngobushushu obukhulu, ukuqhutywa kwe-thermal ephantsi, ubushushu obusezantsi bokusebenza, kunye nenqanaba lokupholisa elicothayo alihambelani ekubunjweni ngesantya esiphezulu. OoMatshini abaKhethekileyo kwinaliti kunye nokuphuculwa kokupholisa okungafunwayo kufuneka kukhethwe.

2) Iiplastiki ezahlukeneyo ziyafuneka ukugcina inqanaba elifanelekileyo lokupholisa ngokweentlobo zazo, iimpawu kunye neemilo zeplastiki. Ke ngoko, isigulo kufuneka sixhotywe ngeenkqubo zokufudumeza kunye neenkqubo zokupholisa ngokweemfuno zobumba zokugcina ubushushu obuthile. Xa iqondo lobushushu lezinto ezibonakalayo linyusa amaqondo obushushu, kufuneka ipholise ukukhusela icandelo leplastiki ukuba liphume emva kokudilizwa, linciphise umjikelo wokubumba, kwaye unciphise i-crystallies.

Xa ubushushu beplastiki yeplastiki ayonelanga ukugcina ubumba obuthile, isisu kufuneka sixhotywe ngenkqubo yokufudumeza ukugcina iqondo lokupholisa, ukuqinisekisa ukugcwalisa iplastiki okanye ukulawula ngeplastiki amalungu opholileyo kancinci. Thintela ukungalingani ngaphakathi nangaphandle kweenxalenye zeplastiki ezinamachaphaza kunye nokunyusa i-crystalliety.

Kwabo banolwelo oluhle, indawo enkulu yokubumba, kunye nobushushu obungalinganiyo, kuxhomekeke kwiimeko zokubumba zeplastiki, ngamanye amaxesha kufuneka zifuduselwe okanye ziphole phantsi kwaye zipholile. Ukuza kuthi ga ngoku, ukubumba kufanele kube kuxhotyiswe ngenkqubo yokupholisa okanye yokufudumeza.

07
I-hygroscopicicity
Kuba kukho i-corsertives ezahlukeneyo kwiplastiki, ezabenza babe needigri ezahlukeneyo zokufuma, iiplasitiki zinokwahlulwa zimbini iintlobo ezimbini: ukuthathwa komswakama, kunye nokungafumani mthethweni. Umxholo wamanzi kwisixhobo masilawulwe ngaphakathi kuluhlu oluvumelekileyo. Ngaphandle koko, umswakama uya kuba yirhasi okanye i-hydrolyze phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu, oluya kubangela i-remn, inciphise ulwelo, kwaye inciphise inkangeleko enkulu.

Ke ngoko, iiplasitiki ze-hygroscopic kufuneka zibhekiswe kwiindlela ezifanelekileyo zokufudumeza kunye neenkcazo njengoko kufuneka zithintele kwakhona ukufumanisa ukufuma ngexesha lokusetyenziswa.

Iphakheji ye-Shanghai iMveliso ye-Shangboi, i-LTD nguMvelisi, iphakheji yemvula ye-shangbow ibonelela ngokupakisha i-cosmetic enye .Ukuba iimveliso zethu, unganxibelelana nathi,
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