Xa usiva 'amalungu okubumba inaliti yentsimbi', umfanekiso ongoko nangoko udla ngokuba ngala malungu agqibeleleyo, amancinane, antsokothileyo, aphantse abe njengomlingo. Inyani, ukusuka apho bendimi khona iminyaka, imbi. Akunjalo nje ukucinezela umgubo wesinyithi kunye ne-binder kwi-mold kwaye uyibiza ngokuba yimini. Umceli mngeni wangempela uqala emva kokuba inxalenye eluhlaza iphuma-umjikelo we-debinding kunye ne-sintering kulapho uhlula khona iivenkile ezizifumanayo kwezo zithengisa nje. Uninzi lwabathengi beza becinga ukuba i-MIM bumatshini nje obubiza imali eninzi okanye utshintshiselwano ngokuthe ngqo lotyalo-mali, kwaye yindlela ekhawulezayo eya kwiprototype engaphumeleliyo okanye ibhetshi yamalungu ajika angaphaya kokunakanwa.
Umdaniso weMaterial: Ayisoze yaphela nje ngesinyithi
Awukwazi ukuthetha nge-MIM ngaphandle kokungena nzulu kwi-feedstock. Asiyonto yorhwebo. I-17-4PH ye-stainless feedstock evela kumthengisi omnye ngokungafaniyo kunomnye, nokuba i-spec sheet ithetha okufanayo. Ukusabalalisa ubungakanani be-particle, ukuqulunqwa kwe-binder-konke kuchaza ukuncipha kokugqibela. Oku sikufunde kabuhlungu kwangethuba, sitshintshela ababoneleli bempahla yesondlo secandelo lesixhobo samazinyo ukonga iindleko. Umahluko wokucutheka udubule ukuya kuthi ga kwi-±0.5% ukusuka kulawulo lwethu lwesiqhelo ± 0.3%, okubangela iphupha elibi kwindibano. Kwafuneka kucinywe yonke ibhetshi. Ngoku, sinamathela kwi-feedstocks eqinisekisiweyo kwaye siphatha loo fomula njengenxalenye ye-IP engundoqo inxalenye.
Kulapho ukuba nemvelaphi kwi-metallurgy ebanzi kuhlawula khona. Kwindawo efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), kunye namashumi eminyaka kwi-shell mold kunye nokuphosa utyalo-mali ngee-alloys ezikhethekileyo, ukuqonda indlela isinyithi esiziphatha ngayo phantsi kobushushu kubalulekile. Olo lwazi luyagqithisela. Xa sijonga inxalenye ye-nickel-based alloy ye-MIM, asicingi nje ngokuzalisa ukubumba; sele sisenza imodeli yengqondo yomoya we-sintering furnace kunye nomjikelo wokupholisa ukuthintela imvula ye-carbide. Yinkqubo eyahlukileyo, kodwa imigaqo yesayensi yezinto ngabazala.
Kwaye i-alloys ezikhethekileyo? Lelinye inqanaba elipheleleyo. I-Cobalt-chrome yezixhobo zotyando, i-tungsten-heavy alloys ye-balances-ezi ayizozintsimbi zakho eziqhelekileyo ezingenasici. Ukudibanisa kufuneka kucothise ngokugqithisileyo ukuphepha ukuqhekeka, kwaye amaqondo obushushu e-sintering aphezu kophahla. Utyalo-mali lweziko lodwa luhluza abadlali abaninzi. Awukwazi ukukhohlisa eli nqanaba; inxalenye mhlawumbi iphuma kunye noxinaniso olufanelekileyo kunye neempawu, okanye sisigaqa esibiza kakhulu sesinyithi esinemingxuma.
Umgibe weJometri: Ukuntsokotha akukho Mahala
I-pitch yokuthengisa isoloko inobunzima obungenamkhawulo. Ewe, ayinamda. Iindlela zangaphantsi? Inokwenzeka, kodwa zenza nzima izixhobo kwaye zinokukhokelela kwimiba ye-ejection kunye nenxalenye eluhlaza ebuthathaka. Ndikhumbula icandelo legiya eline-helical spline yangaphakathi. Ijongeka igqibelele kwiscreen. Ngokwenyani, ipini engundoqo yokwenza eso spline yayincinci kangangokuba yayingakwazi ukumelana noxinzelelo lwenaliti ngaphandle kokuphambuka, okukhokelela kubunzima obungahambelaniyo bodonga. Kwafuneka sibuyele umva, sijiye isikhonkwane, kwaye emva koko sishicilele i-spline post-sintering. Inyathelo elongeziweyo, libulale inzuzo yeendleko zelo nqaku.
Ubungqingqwa bodonga ukufana ligorha elingadumanga. Inxalenye eguqukayo ukusuka eludongeni lwe-2mm ukuya eludongeni lwe-10mm icela inkathazo-uxinzelelo olwahlukileyo lwe-sintering luya kuyijika. Sichitha ixesha elingakumbi kwi-DFM (uYilo lokuVeliswa) uphononongo lweenjineli eziqinisekisayo ukuba zongeze i-radii, ukuphepha iinguqu ezibukhali, kunaso nasiphi na esinye isigaba. Ayikokwenza indawo ibe lula; imalunga nokwenza ukuba iphile ngenkqubo. Iqabane elilungileyo alitsho nje ewe kuwo nawuphi na umzobo; batyhala ngasemva ngedatha yokulinganisa i-thermal.
Kwaye ke kukho ukunyamezelana. Ukubamba ± 0.05 mm kwibhore ebaluleke kakhulu emva kokuba sintering kuyafezekiswa, kodwa akunikwanga. Ifuna inkqubo etshixwayo: isondlo esingaguqukiyo, ulawulo olugqibeleleyo lokunxitywa komgodi wokungunda, kunye neziko elitshisayo elinendawo eshushu eqinileyo. Sihlala siceba isibane CNC Machining ukusebenza kwiidatum ezithile kumalungu afana nezihlalo zevalvu okanye izikhonkwane zokuqhagamshela. Ukuzama ukufezekisa oko ngokucokisekileyo nge-MIM sintering kuyenzeka, kodwa izinga lesivuno linokwenza kube nzima. Kukulungelelana.
I-Sintering: Iyure Yokwenza okanye yoKuqhawula
Le yintliziyo yayo yonke into. Iziko bubukumkani. Unokuba nenxalenye eluhlaza egqibeleleyo, kodwa ukuba iprofayile yakho ye-sintering icinyiwe, yinkunkuma. Amazinga eerempu, amaxesha okubamba ukudibanisa, ubushushu obuphezulu, umoya (i-hydrogen, i-argon, i-vacuum) - yonke into eguquguqukayo yi-knob elungisa imilinganiselo yokugqibela, amandla okuqina, kunye nokumelana nokubola. Kwinxalenye yevolumu ephezulu, ukuphuhlisa le nkcazo kunokuthatha iinyanga ze-DOE (uYilo lweeMvavanyo).
Sakhe sabaleka ibhetshi ye-316L yezibiyeli ezingenasici. Isithando somlilo sasine-thermocouple drift asizange siyibambe ngokukhawuleza. Elona qondo lobushushu lalimalunga ne-25°C ngaphantsi komboniso. Amalungu aphume ejongeka kakuhle, kodwa ukuxinana kwakumalunga ne-92% yethiyori, hayi i-96% + efunekayo. Baluphumelela uvavanyo lwesitshizi setyuwa ngeentsuku. Sifunda ntoni? Ukulinganisa kunye nokugcinwa komgca we-sintering akunakuxoxisana, kwaye kufuneka uvavanye ngokutshabalalisa ukuxinana kunye ne-microstructure ukusuka kwimithwalo eyahlukeneyo yesithando somlilo rhoqo. Yi-inshurensi.
Ukulawulwa kokuphazamiseka kobunye ubugcisa obumnyama. Ukulungiswa, okanye iiseta zokucoca, zihlala zisetyenziswa. Kodwa kufuneka uyilwe ukuze ingabambeleli kwindawo, kwaye yona ngokwayo akufuneki ijike kwiqondo lobushushu. Kwiindawo ezinde, ezibhityileyo, ngamanye amaxesha uyazifaka zijinga ngokuthe nkqo. Ivakala ilula, kodwa ukufumana ukunqunyanyiswa ngokufanelekileyo ukuze kungagrumbi kwindawo ethambileyo, yokuntywila sisakhono esichukumisayo osifunda kwimithwalo eyonakeleyo.
Apho I-MIM Ingena kwi-Ecosystem yeMveliso yokwenyani
I-MIM ayisosiqithi esizimeleyo. Likhonkco kwikhonkco. Ndibona indawo yayo emnandi njengomthamo ophezulu (cinga nge-10k + iziqwenga ngonyaka), iindawo ezinobumba obuntsonkothileyo eziya kuba bubulali ukuya kumatshini ukusuka kokuqinileyo okanye kufuna amanyathelo amaninzi endibano. Cinga ngezixhobo zompu, izibiyeli ze-orthodontic, iindawo zotyando, izixhobo ezincinci zokuqhuba ezichanekileyo. Kwimiqulu esezantsi, utyalo mali okanye nokuba umatshini unokuba noqoqosho ngakumbi, nokuba ijometri intsonkothile.
Le yimbono oyifumanayo kumthengisi weenkqubo ezininzi. Ukujonga Ipotfoliyo ye-QSY e tsngtaocnc.com, eqala ukuphosa ukuya kwi-CNC machining, ufumana umbono wepragmatic. Umxhasi unokuza nomzobo wenxalenye. Ngamanye amaxesha, esona sisombululo singumxube: MIM umzimba okufutshane-netha-imilo, emva koko usebenzise ukuchaneka kweCNC machining ukubetha ezimbini okanye ezintathu unyamezelo olubalulekileyo iMIM engenakulubamba ngokuthembekileyo. Ukuzama ukunyanzela yonke inxalenye yentsimbi entsonkothileyo kwiMIM yimpazamo. Umbuzo ochanekileyo ngulo: Yeyiphi eyona ndlela inamandla nengabizi kakhulu ukuya kule ndawo igqityiweyo?
I-post-processing iphantse isoloko ifuneka. Ukugungxulwa ekugxothweni, unyango lobushushu lobulukhuni obuthile, iplating okanye ipassivation yokuxhathisa umhlwa. Kuya kufuneka uqwalasele oku kwasekuqaleni. Inxalenye ye-MIM eqaqambileyo inokonakala kwi-tumbler engcangcazelayo ukuba imiphetho ibukhali kakhulu.
I-Pragmatic Takeaway
Ngoko ke, lithini inqaku lokwenyani iindawo zokubumba inaliti yesinyithi? Bubuchwephesha obumangalisayo xa busetyenziswa ngokuchanekileyo. Undoqo kukubona njengenkqubo, hayi imbumbulu yomlingo. Impumelelo ixhomekeke kwiintsika ezintathu: uyilo oluhlonipha imiqobo yenkqubo, i-feedstock kunye neprofayili ye-sintering elungiselelwe imathiriyeli, kunye nolawulo lomgangatho othembekileyo kodwa oqinisekisa ibhetshi nganye.
Iinkampani ezenza kakuhle, zihlala zinesiseko esinzulu kunye neengcambu ze-machining ezifana ne-QSY, ziyaqonda ukuba imalunga nesinyithi kuqala kunye nokubumba okwesibini. Banenkumbulo yeziko yendlela iintsimbi ezihamba ngayo kwaye zisabela ngayo. Ababumbi nje; balungisa isinyithi ngokufudumeleyo ukuya kuxinano olusondeleyo.
Ukuba ucinga ngeMIM, qala ngencoko yeDFM kwangoko. Zilungiselele ukuphinda-phinda isixhobo kube kanye okanye kabini. Kwaye rhoqo, soloko uhlahlo lwabiwo-mali kwaye ucwangcise ixesha lophuhliso lwe-sintering. Inxalenye izalelwa kubumba, kodwa ikhulela eziko. Ukufumana oko kulungile ngumahluko phakathi kwecandelo elisebenza kwiphepha elithile kunye nelisebenza esandleni sakho, usuku nosuku.
