Xa usiva i-'MIM powder metallurgy', umfanekiso ongoko nangoko uhlala usiba zezi ndawo zigqibeleleyo, zincinci, zintsokothileyo ziqengqeleka kumgca ozenzekelayo ozihambelayo. Leyo yintetho yencwadana. Inyani, le ndihlala nayo iminyaka, imbi, inezinto ezininzi, kwaye ngokunyanisekileyo, inomdla ngakumbi. Akunjalo nje ngokucofa kunye nokuntywila; luthethathethwano olungagungqiyo phakathi kokuziphatha kwe-feedstock, ukunxitywa kwezixhobo, kunye nemo yomlilo ngaloo mini. Uninzi lwabafikayo, nabathengi abathile, bacinga ukuba yimbumbulu yomlingo kuyo nayiphi na imilo entsonkothileyo, ejongene nemiqobo esisiseko yokupakishwa kwamasuntswana kunye neenkqubo zokubopha. Lo msantsa phakathi kokubona kunye nobunyani begritty kulapho owona msebenzi usenzeka khona.
Umdaniso ongundoqo: I-Feedstock kunye nezixhobo
Intliziyo yeMIM ayingomgubo wentsimbi wodwa; sisixhekethi sokutya—loo mxube we-homogeneous womgubo ocolekileyo kunye nenkqubo yokubopha izinto ezininzi. Ukufumana loo viscosity echanekileyo bubugcisa ngaphezu kwenzululwazi ngamanye amaxesha. Unokuba neyona nto ingcono ye-gas-atomized 17-4PH powder, kodwa ukuba ukuqulunqwa kwe-binder kucinywe ngeqhezu, uya kubona imiba ekubumbeni, njengejethi okanye ukuzaliswa okungaphelelanga, okubonisa kuphela ngexesha lokuboleka. Ndikhumbula iprojekthi yehenjisi yesixhobo sotyando apho sasitsala nzima kangangeeveki. Unobangela yayingeyiyo iqondo lobushushu lokungunda okanye uxinzelelo, kodwa kukungahambelani okuncinci kwi-feedstock pellet edityaniswayo kumboneleli wethu. Wasibuyisela kwisikwere sokuqala.
Kwaye izixhobo. Abantu bajongela phantsi ukunxitywa kwe-MIM molds. Kuba utofa uludaka olurhabaxa, iimpawu ezibalulekileyo, ngakumbi loo mazinyo mahle kwigiya encinci ye-actuator echanekileyo, anokuba buthuntu ngokukhawuleza kunokuba kubumba inaliti yeplastiki. Kufuneka ucwangcise loo nto, ukwakha izibonelelo, okanye ucacise intsimbi yesixhobo esinzima ukusuka ekuhambeni. Lixabiso elisoloko liphoswa kwiikowuti zokuqala.
Kulapho iqabane elinembali yezinto ezinzulu libalulekile. Inkampani efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), umzekelo, izisa amashumi eminyaka yamava e-metallurgical ukusuka kwi-investment casting kunye nokulungiswa kwetafile. Ngelixa indawo yabo ephambili tsngtaocnc.com iinkcukacha umsebenzi wabo nge alloys, ukuba ulwazi olusisiseko lubalulekile. Xa ubambe ii-superalloys ezinyibilikisiweyo, uyasiqonda isakhiwo sokutya okuziinkozo kunye notshintsho lwesigaba kwinqanaba elazisa indlela osondela ngayo kwi-sintering I-MIM powder metallurgy inxalenye eyenziwe kwintsapho efanayo ye-alloy. Yinkqubo eyahlukileyo, kodwa iinjongo ze-metallurgical ziyafana.
Amanqanaba oKwenziwa okanye oKwaphula: Ukubophelela kunye nokuSintering
Le yibhokisi yokwenyani emnyama yeMIM. I-Catalytic debinding, i-solvent debinding, i-thermal-nganye inemigibe yayo. Ngokukhawuleza kakhulu, kwaye ufumana iintanda okanye amadyungudyungu njengoko isibophelelo sizama ukubaleka. Ukucotha kakhulu, kunye neetanki zakho zokuvelisa. Ndibone iinxalenye ziphuma kwi-thermal debind zijongeka zigqibelele, kuphela ukuba zijike ngokwentlekele kwiziko lomlilo ngenxa yokuba umkhondo wentsalela ye-binder yenze uxinzelelo lwangaphakathi. Ngumbono obuhlungu.
I-Sintering kulapho umlingo kunye noloyiko ludibana khona. Awunyibiliki nje; uququzelela ukusasazwa kweathom ngaphaya kwemida yamasuntswana. Iprofayili yobushushu, umoya (i-hydrogen, initrogen, ivacuum), kunye nexesha zizinto zonke. Kwinxalenye yensimbi engenasici, iidigri ezimbalwa eziphezulu kakhulu okanye ixesha lokufunxa ixesha elide kunokukhokelela ekukhuleni okuziinkozo okugqithisileyo, ukubulala iimpawu zomatshini. Ukufumana inkxaso ye-sintering ekunene ukuthintela ukuphazamiseka sesinye isakhono esipheleleyo. Asikokubeka nje iinxalenye kwipleyiti ecaba.
Oku kubopha emva kubuchwephesha bezinto eziphathekayo. Imvelaphi ye-QSY ekukhupheni ii-alloys ezikhethekileyo ezifana ne-cobalt-based kunye ne-nickel-based based ihambelana ngqo apha. Ezi zixhobo ezikhohlisayo zokutshiza kwi-MIM. Ukwazi ubushushu babo be-solidus / liquidus, indlela abasebenzisana ngayo nekhabhoni ngexesha lokutshiza, kunye neemfuno zabo zokugqibela zonyango lobushushu ukusuka kwimbono yokuphosa inika iqela isiqalo esibalulekileyo. Ithintela impazamo ye-rookie yakudala yokuphatha zonke ii powders zetsimbi ngokufanayo kwiziko.
Ukudityaniswa neMisebenzi yesibini
Kunqabile ukuba inxalenye ye-MIM iphume kwibhanti ye-sintering elungele ukuthunyelwa ngenqanawa. Phantse ngalo lonke ixesha, udinga umatshini wesibini. Le yingongoma ebalulekileyo. Ukuncipha kwe-sintering, ngokuqhelekileyo i-15-20%, iqikeleleka kodwa ayifani ngokugqibeleleyo. Ke, uyila, ushiya ujongano olubalulekileyo olunje ngemisonto okanye umphezulu wokutywina njengendawo ene-sintered, okanye ushiya isitokhwe ukuze ufumane ipasi lokugqibela.
Apha kulapho umsebenzi odityanisiweyo ngokuthe nkqo ubonisa ixabiso lawo. Ukuba umnikezeli wakho we-MIM ukwanamandla anamandla e-CNC, njengeembalasane ze-QSY kunye neenkonzo zabo zomatshini ze-CNC, iluphu yengxelo iqinile. Iqela lobuchwephesha linokuxelela iqela le-MIM, Ezi mpawu zokukhangela zihamba nge-0.05mm batch-to-batch, ngaba singakwazi ukulungelelanisa isixhobo okanye isixhobo sokucoca? Le ntsebenziswano yangaphakathi isombulula iingxaki ngokukhawuleza kunokuthumela iinxalenye eziluhlaza kwivenkile yomatshini yangaphandle engayiqondiyo i-nuances yenkqubo.
Ndisebenze kumaqumrhu onxibelelanisi apho imingxunya ye-pin echanekileyo idinga umsebenzi wokubuyisela emva kwe-sinter. Ukwenza ukuba oomatshini benziwe ngaphakathi, kunye neenjineli ezivela kumacala omabini zithetha yonke imihla, kusivumele ukuba sitshintshe ukwakheka kwe-feedstock kancinane ukuphucula ubuchule ngaphandle kokubeka esichengeni ingxinano ye-sintered. Yajika inxalenye eyingxaki yaba yinto ethembekileyo.
UKhetho lweMathiriyeli: Hayi nje uKhetho lweKhathalogi
Ukukhetha imathiriyeli a I-MIM powder metallurgy inxalenye ayifani nokuchola kwimenyu. Ewe, unayo imigangatho: 316L, 17-4PH, Fe-Ni alloys. Kodwa i-powder lot-to-lot consistency, i-particle size distribution (PSD), kunye nomxholo we-oksijini ubaluleke kakhulu. I-PSD eqinile inokunika ukupakishwa okungcono kunye nokugqitywa komphezulu ogudileyo kodwa inokubiza i-30% ngaphezulu. Kwisicelo sokunxiba okuphezulu, unokukhangela izixhobo zentsimbi ezinje nge-M2, kodwa ke imijikelo yakho yokubophelela kunye neyokuntywila iba novakalelo ngakumbi.
Le yenye indawo apho amava e-alloy ebanzi ahlawulayo. Inkampani ekwaziyo ukuphosa iintsimbi ezingenasici kunye ne-alloys ekhethekileyo iya kuba nengqiqo esekelwe kwiimfuno zokusebenza zokugqibela. Akulindelekanga ukuba bajonge ngaphezulu kwe-superalloy ebiza kakhulu ngomsebenzi oguquliweyo we-400-series engenastainless inokusingatha, okanye ngokuphambanayo. Bayakuqonda ukuxhathisa kokukhula, ubushushu obuphezulu, kwaye banxibe hayi nje amanani ephepha ledatha, kodwa njengokuziphatha kwelizwe lokwenyani ukusuka kwimbali yabo yokuphosa. Eso sigwebo sixabiseke kakhulu xa ucebisa ngokukhethwa kwezinto zeMIM.
Ukujonga Inyani: Xa iMIM Ingeyompendulo
Inxalenye yokuba yincutshe kweli candelo kukwazi xa uthi hayi. I-MIM iqaqambile kumthamo ophezulu, ontsokothileyo, wamalungu amancinci ukuya phakathi. Kodwa ukuba ijometri sisithuba esilula, jikela kumatshini. Ukuba ufuna ngokupheleleyo, ingxinano ye-isotropic ngaphandle kwe-porosity eshiyekileyo yevalvu ye-aerospace ekumgangatho ophezulu, usengakwindawo yotyalo-mali. Ukuba umthamo wonyaka ungamaqhekeza angama-10,000 kuphela, iindleko zesixhobo zinokubulala i-ROI.
Ndikhe ndayinxalenye yeeprojekthi apho siye sazama ukutyhala iMIM kwizicelo ebengayifanelanga, sitsalwa bubunzima. Enye yayisisibiyeli esikhulu ngokwentelekiso. Silawule ukugqwetheka kwe-sintering, kodwa ukuhambelana kwenxalenye-kwinxalenye kwiipropathi zoomatshini bekungaqinanga ngokwaneleyo kuvavanyo lokudinwa komthengi. Saye sagqiba ekubeni sidibanise—sisebenzise iMIM kwihabhu entsonkothileyo kwaye emva koko sidityaniswe nentsimbi edityanisiweyo yengalo. Yasebenza, kodwa yayisisifundo kwimida yenkqubo.
Ekugqibeleni, impumelelo I-MIM powder metallurgy imalunga nokufaneleka. Sisixhobo esinamandla kwibhokisi yokuvelisa, kodwa ingeyiyo yodwa. Iziphumo ezingcono kakhulu zivela kumaqabane aqondayo yonke i-landscape-ukusuka kwi-powder ukuya kwinxalenye egqityiweyo-kwaye banokuhamba ngeendlela zokurhweba nge-pragmatism ecacileyo, i-shop-floor pragmatism. Lowo ngumahluko phakathi kwenkqubo yethiyori kunye nendlela yemveliso ethembekileyo.
