Uveliso oluPhezulu: I-Ceramic Injection Molding on Rise

Ukusetyenziswa kweteknoloji yokubumba inaliti ye-ceramic

Ngophuhliso olukhawulezayo lwetekhnoloji yeCIM, iimveliso zokubumba inaliti yeceramic ziye zasetyenziswa kwezinye iinkalo

1. Isinye kwisithathu seemeko zokubukela zaseSwitzerland ziveliswa kusetyenziswa itekhnoloji yokubumba itekhnoloji yesitofu seceramic, kwaye izinto eziphathekayo yizirconia, imathiriyeli yeceramic engaze inxibe.
2. IJapan ineziqhagamshelo zefiber ye-zirconia eziphuculweyo ezinobubanzi bomngxuma ongaphakathi oyi-0.015mm.
3. I-United States iye yaqaphela ukuveliswa kwe-zirconia hair clippers kunye nokusetyenziswa kwamacandelo e-silicon nitride kwiinjini.
4. Kuphuhliswe umgca we-ceramic wokuchaneka komxube we-helix ochanekileyo kunye nemibhobho ye-ceramic enemisonto ephindwe kabini kwi-State Key Laboratory ye-Powder Metallurgy ye-Central South University of Technology yase-China. I-sensor ye-zirconia yaphuhliswa ngempumelelo yiSikolo seSayensi yezeNzululwazi kunye neTekhnoloji yeYunivesithi yaseHuazhong yeSayensi kunye neTekhnoloji usebenzisa iteknoloji yeCIM.

Inkqubo esisiseko yokuhamba kwetshati yokubumba inaliti yesitofu

Umgubo, isibophelelo, i-dipersant, i-lubricant--ukuxuba---degassing granulation-- injection-- degreasing-- sintering -- uvavanyo lwemveliso

Itekhnoloji yokubumba itekhnoloji yesitofu seCeramic kwiimfuno zomgubo weceramic

1. Ipowder kufuneka ilungiselelwe ngokukodwa ubuninzi bokuzalisa umda ophezulu kunye neendleko eziphantsi;
2. Umgubo awuxubeki;
3. Ubume bomgubo ubukhulu becala bungqukuva;
4. Kukho ukungqubuzana okwaneleyo phakathi komgubo ukuphepha ukuguqulwa okanye ukuwa kwe-billet emva kokuba i-binder isusiwe. Kwiimeko ezininzi, i-Angle ye-slope yendalo kufuneka ibe nkulu kune-55 °;
5. Ukuze kuququzelelwe ukutshiza ngokukhawuleza, kufuneka kube nesayizi encinci ye-particle, ngokubanzi ngaphantsi kwe-1 μm;
6. I-powder ngokwayo i-dense, ngaphandle kwee-pores zangaphakathi;
7. Umphezulu wepowder ucocekile kwaye awuhambisani neekhemikhali kunye ne-binder.

Isibophelelo sokubumba isitofu senkqubo

Izibophelelo ekubumbeni inaliti zinemisebenzi emibini esisiseko.

Okokuqala, umgubo unokuxutywa ngokulinganayo kwinqanaba lokubumba, kwaye umgubo unokuba ne-fluidity enhle emva kokufudumeza;

Okwesibini, i-binder inokugcina imilo yomzimba emva kokubunjwa kwenaliti kunye nangexesha lokunciphisa.

Kunokuthiwa ukuba i-binder ingundoqo kunye nesitshixo kwiteknoloji yokubumba i-powder, kwaye uphuculo ngalunye kunye nokuphumelela kwenkqubo yokubumba inaliti ihamba kunye nokuzalwa kwenkqubo entsha yokudibanisa. Kwi-CIM, ngenxa yokuba ubungakanani be-powder particle buncinci kune-metal powder injection yokubumba, i-fluidity ye-powder ngokwayo ihlwempuzekileyo, kwaye isithuba phakathi komgubo kunye ne-binder emva kokuxubana kuncinci kakhulu, okubangelwa ukuchithwa okunzima, okubeka phambili iimfuno ezifunwa kakhulu kwi-binder. Ke ngoko, njengesibophelelo sokubumba inaliti ye-ceramic, le miqathango ilandelayo kufuneka ifezekiswe:

1. Ukuhamba kakuhle. I-viscosity ye-injection molding kufuneka ibe yimodareyitha, i-viscosity iphezulu kakhulu, i-powder ayikwazi ukuchithwa ngokufanelekileyo kwi-binder, akunzima nje ukuxuba, kodwa kunzima ukufumana i-billet edibeneyo edibeneyo, elula ukuvelisa iziphene zokubumba; I-viscosity ephantsi kakhulu iya kubangela ukuchithwa kwe-ceramic powder kunye ne-binder, kwaye i-viscosity ayikwazi ukuguquguquka kakhulu ngeqondo lokushisa, ngaphandle koko iziphene ziya kwenzeka.

2. I-binder kufuneka ikwazi ukumanzisa umgubo kakuhle kwaye ibe nefuthe elihle lokubambelela kwipowder. Ngokuqhelekileyo ukuze kuphuculwe ukusebenza kokumanzisa kwe-binder, ezinye izinto ezisebenzayo kufuneka zongezwe ukunciphisa i-viscosity yomxube kunye nokwandisa ubuninzi bayo. Ngelo xesha, i-binder imanzisa amaqhekeza ukuvelisa amandla e-capillary ukuze adsorb amaqhekeza kwaye agcine umzimba kwi-deformation. Ukuze kuqinisekiswe ukuzinza kwe-billet, i-powder kufuneka ibe inert ehambelana ne-binder.

3. Isibophelelo senziwe ngamacandelo amaninzi ezinto eziphilayo. Kunzima kwi-binder eyodwa ye-organic ukuhlangabezana neemfuno ze-fluidity, kwaye emva kokuba enye yamacandelo ihlanjululwe ngaphandle, i-porosity evulekileyo yenziwa, eyenza ukukhutshwa ngaphandle kwe-binder eseleyo. Ukuziqhelanisa kubonakalise ukuba isantya sokuthoba isibophelelo se-multi-component sikhawuleza kakhulu kunoko sisibophelelo secandelo elinye kwaye iziphene zincinci kakhulu. Ewe kunjalo, iipolymers eziphilayo ezinezibophelelo zamacandelo amaninzi ziyahambelana.

4. I-binder ine-conductivity ephezulu ye-thermal kunye ne-coefficient yokwandisa i-thermal ephantsi. Oku akugcini nje ukuphepha iziphene ezibangelwa uxinzelelo lwe-thermal, kodwa kunciphisa ukutshatyalaliswa kwe-thermal kumzimba kunye nokunciphisa iziphene.

5. Ukongezelela, i-binder kufuneka ibe yinto engeyona inetyhefu, engangcolisi, i-non-volatile, i-absorption engekho yomswakama, kunye nokusebenza kokufudumala kwe-cyclic akutshintshi.

Ukuthelekiswa kweenzuzo kunye nokungalunganga kweenkqubo ezahlukeneyo zokubopha

Izibophelelo ezininzi eziqhelekileyo kwi-CIM zenziwe

Kwiminyaka yakutshanje, ezona zibophelelo ziqhelekileyo zihlala zisetyenziswa kwiintlobo ezahlukeneyo zokubumba inaliti yomgubo emhlabeni. Njengoko kunokubonwa kwitheyibhile, izibophelelo ezisetyenziswa kwi-CIM ikakhulu zeze-thermoplastic multi-component system.

Ukulungiswa komxube weCIM

Umxube ngumxube womgubo kunye ne-binder. Kuyo yonke inkqubo yokubumba inaliti, ukulungiswa komgubo kunye nomxube we-polymer binder yenye yamanyathelo abalulekileyo. Inkqubo ifuna umxube ukuba ube ne-homogeneity elungileyo, iipropathi ezilungileyo ze-rheological kunye neempawu ezintle zokunciphisa.

Kwitheknoloji yokuxuba ekhethiweyo, indima ephambili kukufanisa izinga, ukushisa kunye nexesha. Nangona kunjalo, ukuba isantya sokuxuba kunye neqondo lokushisa liphantsi kakhulu, kungakhathaliseki ukuba ixesha elide lokuxuba alikwazi ukufana.

Ingxaki ye-rheological ye-PIM ikakhulu kuvavanyo kunye nokubonakaliswa kwe-viscosity yomxube.

Isitofu sokubumba

Injongo yokubumba inaliti kukufumana i-CIM eyenza umzimba ongenaziphene kunye nokulungelelaniswa kwamasuntswana afanayo kwimo efunwayo. Umxube olungisiweyo unokutofwa ngokubanzi kumatshini wokubumba inaliti yeplastiki eqhelekileyo, okanye unokutofwa kumatshini okhethekileyo wokutofa ngomgubo. Iiparamitha zenkqubo yokubumba ngokubanzi zibandakanya ubushushu benaliti, uxinzelelo lwenaliti, isantya sokutofa, uxinzelelo lokubamba uxinzelelo, uxinzelelo olubambe ixesha lokupholisa kunye nobushushu bokubumba. Ukuba iiparamitha zenkqubo azilawulwa ngokufanelekileyo, kulula ukuvelisa iziphene ezahlukeneyo. Iziphene ze-injection azikwazi ukupheliswa kwinkqubo elandelayo, ngoko ke le nkqubo kufuneka ilawulwe ngokungqongqo, eyona nto ibalulekileyo ekuphuculeni imveliso kunye nokusetyenziswa kwezinto.

Iindawo zokubumba inaliti yeZirconia

Ukulawulwa kweziphene kwinkqubo yokubumba inaliti ye-ceramic

Ukulawulwa kweziphene kwinkqubo yokubumba i-injection kunokuqwalaselwa kwimiba emibini: kwelinye icala, ubudlelwane phakathi kobushushu bokubumba, uxinzelelo kunye nexesha libekiwe; Omnye umba kukuhamba kokutya kumngxuma wokungunda xa kuzaliswa. Ngenxa yokuba uninzi lweemveliso zeCIM zizinto ezincinci ezinemilo entsonkothileyo kunye neemfuno ezichanekileyo ezichanekileyo, ukuhamba komxube kumgodi wokungunda kubandakanya imiba yoyilo lokungunda, kubandakanya indawo yezibuko lokutya, ubude bejelo lokuhamba, indawo yomngxuma wokuphuma, njl.

I-Ceramic sintering

Inkqubo ye-sintering ikakhulu kukulawula ukukhula kwesayizi yeenkozo zeeseramikhi, ukufumana izixhobo zesigaba esifunekayo, kunye nokuqinisekisa ukuxinana okuphezulu kwe-sintering kunye ne-ceramic sintered body.

Inkqubo ye-Sintering iparameters ezimbini ezibalulekileyo: ukushisa kwe-sintering kunye nexesha le-sintering

Inkqubo entsha yokubumba inaliti yeceramic

I-powder co-injection molding (PCM) luphuhliso olutsha lwe-powder injection molding.Obu buchule busebenzisa umatshini wokubumba umbhobho ophindwe kabini ukutofa ngokulandelelana imixube emibini eyahlukeneyo yomgubo/isibophelelo kumgodi wokungunda. Le nkqubo ivumela ukuba unyango lomphezulu lwenziwe ngexesha lokubumba inaliti, kunokuba emva kokuba umveliso ogqityiweyo ulungiswe. Ukulungiswa kunye nokuphathwa kwendawo yemveliso kunokugqitywa kwinkqubo enye, yona ngokwayo ekhangayo kakhulu kumbono wezobugcisa kunye nezoqoqosho.

Itekhnoloji yokubumba inaliti yoxinzelelo oluphantsi, ngokwenkqubo yokutofa ngokwayo, inkqubo yokutofa ngoxinzelelo oluphantsi ingcono kunenaliti yoxinzelelo oluphezulu.Ukutya kwe-viscosity ngokubanzi phakathi kwe-1.5-4.0Pa.s kunokugqitywa ngu-0.8Mpa umoya oxinzelelweyo, onokususa inkqubo ye-hydraulic, i-injection piston kunye nenkqubo yokudibanisa intonga kwisixhobo sendabuko. Ingabonwa ukuba izibonelelo zenaliti yoxinzelelo oluphantsi luxinzelelo oluphantsi lwe-gradient kwi-injection eluhlaza, ukunxiba okuncinci kokungunda, ukondla okungekho ntonga yokubumba, ukuphepha ungcoliseko lokondla okubangelwa kukunxitywa kwepiston yesitofu kunye nokungahlukaniswa kwepowder / binder. Ukongezelela, kukho ukusetyenziswa kwamandla aphantsi, ubungakanani besixhobo esincinci, isakhiwo esilula kunye neendleko eziphantsi.