Xa uninzi lwabantu lucinga malunga ne-powder metallurgy (PM), batsiba ngqo ukucofa kunye nokuntywila. Eyona mveliso yomgubo idla ngokuphathwa njengenyathelo lempahla yorhwebo, into osanda kuthenga kuyo. Lulongamo olunexabiso eliphezulu olo. Iimpawu zomgubo-i-morphology yayo, ukusabalalisa ubungakanani besuntswana, ukuhambahamba, kunye nokuxinana okubonakalayo-zitshixiwe apha. Awukwazi ukucinezela okanye ukutshiza indlela yakho yokuphuma kumgubo ombi. Ichaza yonke into eza emva kwayo.
Iindlela ezingundoqo kunye neNyaniso yoKhetho
Uneendlela eziphambili: i-atomization yeentsimbi, ukucuthwa kweekhemikhali kwizinto ezifana ne-tungsten, kunye neendlela zoomatshini ezifana nokusila. I-atomization yamanzi iyasebenza kwiipowders ezininzi ze-ferrous-indleko-esebenzayo, ikunika ezo zitenxo, amasuntswana ane-oxidized kancinane adibana kakuhle. Kodwa ukuba ufuna umgubo ongqukuva kwizicelo ezisebenza kakhulu njengokwenziwa kokongeza okanye ukubumba inaliti yentsimbi (MIM), i-atomization yerhasi kuphela komdlalo wokwenyani edolophini. Irhasi ye-inert, ngokuqhelekileyo i-argon okanye i-nitrogen, iphula umjelo onyibilikayo kwiinkalo ezikufutshane. Ukutsiba kweendleko kubalulekile, kodwa kunjalo nokusebenza.
Nantsi i-snag esebenzayo esiye sabalekela kuyo kunye nebhetshi yentsimbi engama-316L ye-MIM. I-spec ibize i-D90 phantsi kwee-microns ezingama-22. I-gas atomized powder yabuya ikhangeleka ilungile phantsi kwe-SEM, ii-spheres ezintle. Kodwa uhlalutyo lwe-sieve lubonise umsila otyebileyo wezohlwayo-iincinci ezingaphantsi kwe-10 microns. Oko kuliphupha elibi lokubamba; kutshintsha ukuhamba kwe-capillary, kunokukhokelela ekuqhumeni. Umthengisi wayefake uxinzelelo lwegesi ukuba abethe isivuno esiphezulu, ngokungazinzi edala iintlawulo ezininzi. Yayingaphumi kwi-spec, kodwa iphantse yayonakalisa imveliso. Indifundise ukuba ndihlale ndibuza igophe elipheleleyo le-PSD, kungekhona nje i-D10, i-D50, i-D90 amanqaku.
Kulapho ubuhlakani bexesha elide kunye nabasunguli kunye neengcaphephe zezinto eziphathekayo zibalulekile. Inkampani efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), kunye neminyaka yabo yokuphosa kunye ne-alloys, bayayiqonda le nto ukusuka kwelinye icala. Abangabo abavelisi bomgubo, kodwa ulwazi lwabo olunzulu lokuziphatha kwe-alloy-ingakumbi ezo zisekwe kwi-nickel-based okanye i-cobalt-based superalloys-bazisa into abayifunayo kubaboneleli babo bomgubo kwiinkqubo ezilandelayo ezifana nokuphosa utyalo-mali kwiindawo ezikufutshane-netha. Ukucoceka komgubo kunye nokungaguquguquki kuchaphazela ngqo iziphumo zabo zokubunjwa kweqokobhe.
Ngaphaya kwePhepha leDatha: Ukuphatha kunye noguquko olufihlakeleyo
Isatifikethi sokuhlalutya sisiqalo, kungekhona ibali lonke. Ukuxinana okubonakalayo kunye nesantya sokuhamba (kulinganiswa nge-flowmeter yeHolo) kubaluleke kakhulu ekuzaliseni ukufa kokushicilela okuzenzekelayo. Umgubo unokuba ne-PSD enkulu kodwa ukuhamba kakubi ngenxa yamasuntswana esathelayithi-loo mimandla mincinci idityaniswe kwimikhulu ukusuka kungquzulwano kwi-atomization tower. Basebenza njengeiankile ezincinci.
Ukuphatha i-post-production enye imbobo emnyama. Ndibone umgubo ogqibeleleyo uthotywa kukugcinwa okungafanelekanga. Ukuthatha ukufuma kwimibhobho yeferrous yinto yakudala. Nakwizikhongozeli ezitywiniweyo, ukuba indawo yokugcina impahla ayilawulwa yimozulu, ufumana i-oxidation yomphezulu eyenzakalisa ukucinezeleka kunye nokomelela kokugqibela. Kwimathiriyeli esebenzayo efana ne-titanium okanye ialloyi ze-aluminiyam, lelinye inqanaba lokuqulatha-elihlala lifuna ukugcwaliswa kwe-argon. Ixabiso lomgubo yinto enye; indleko yokugcina imeko yayo de ifike ekufeni yenye.
Ngamanye amaxesha, isisombululo singumxube. Sakhe saba necandelo elidinga amandla aphezulu aluhlaza kodwa kunye nejometri entsonkothileyo. Umgubo womthombo omnye awuzange uwugawule. Siye sagqiba ukudibanisa iibhetshi ezimbini ukusuka kwisiseko sealloyi enye kodwa ngobungakanani obahlukileyo obuhlukeneyo-enye i-coarser yokuhamba, enye icolekileyo yokubopha. Inkqubo yokuxuba ngokwayo yaba yinto ebalulekileyo; ukudibanisa i-cone ephindwe kabini xa kuthelekiswa nokudibanisa i-V kwanika i-homogeneity eyahlukileyo, echaphazela ukuhambelana kwenxalenye ukuya kwinxalenye. Yayiyinkqubo enzima, ethatha ixesha ongasoze uyibone kwincwadana ecwebezelayo ye-PM.
I-Special Alloys Conundrum kunye ne-Practical Sourcing
Kulapho irabha idibana khona nendlela. Ukusebenza ngentsimbi eqhelekileyo, ubhedu, okanye umgubo wentsimbi engatyiwa ngokuthe ngqo. Ikhonkco lokubonelela likhulile. Kodwa xa uyilo lwakho lufuna i-alloy esekwe kubushushu obuphezulu njenge-Inconel 718, okanye i-alloy-resistant cobalt-based alloy efana ne-Stellite 6, yonke into iyatshintsha.
Ukunyibilikisa ngaphambi kokuba i-atomization ibaluleke kakhulu. Ukulandelela izinto, umxholo wegesi (ioksijini, initrogen), kunye ne-homogeneity ye-alloy master zonke ziprintwa kumgubo. Ukwahlula okuncinci kwi-ingot kunokukhokelela kwiindawo ezishushu okanye ukungahambelani kwe-sintering kamva. Kuba ingcali machining efana QSY, othi kamva enze CNC Machining kumalungu e-PM e-sintered, ubulukhuni obungahambelaniyo okanye ubukho bezigaba ezinzima, ezibhityileyo ukusuka kugxininiso lokungcola kunokutshabalalisa izixhobo. Bafuna izinto eziqikelelwayo, ezifanayo kumatshini kukunyamezelana okuqinileyo, okubuyisela umthwalo kwimveliso yomgubo ukuhambisa ukungaguquguquki ngokupheleleyo.
Ukufumana ezi powders ngumngeni. Imiqulu iphantsi, amaxesha okukhokela ixesha elide. Uhlala ujongana ngqo nelitye lokusila elivelisa isitokhwe sebha yealloyi okanye ngeatomizer ekhethekileyo. Ayiyonto ithengwayo ngaphandle kweshelufu. Ngokusisiseko uphuhlisa ingcaciso yemathiriyeli. Ndikhumbula iprojekthi yesitywina se-aerospace apho uxwebhu lwenkcazo yomgubo lwalunamaphepha ali-12 ubude. Yaziva igqithise kakhulu ngelo xesha, kodwa yathintela ukungaphumeleli emgceni.
Iintsilelo kunye neZifundo Eziziprintayo
Ufunda ngakumbi kwibhetshi engaphumeleliyo kunakwikhulu eliphumeleleyo. Ekuqaleni kwexesha lam, sasinomsebenzi weegiya ezidinwe kakhulu ezaqala ukungaphumeleli kuvavanyo. Umphezulu wokuqhekeka ubonise ukungaphumeleli okucocekileyo, kwe-intergranular. Sihlolisise yonke into: uxinzelelo loxinzelelo, ukushisa kwe-sintering kunye ne-atmosphere, unyango lobushushu. Konke ukucacisa. Ekugqibeleni, sabuyela kwindawo yomgubo kwaye senza ukuntywila nzulu. Uhlalutyo lokwetyisa kwe-asidi luveze umxholo wenitrogen ongaphezulu kancinane kunesiqhelo. I-atomizer yayisebenzise umthombo we-argon kunye nokungcola okuphezulu kwe-nitrogen yaloo batch. Oko kwanda kuncinci kwi-nitrogen ephakathi kwe-interstitial kuthintele imida yeenkozo ngokwaneleyo. Umgubo wawukwi-spec khemikhali, kodwa uhlalutyo lwegesi lwalubanzi kakhulu. Sayiqinisa, yaza ingxaki yaphela. Ngoku, ndine-paranoid malunga nezatifikethi zegesi zegesi ye-atomization ngokwayo.
Esinye isifundo sasimalunga nokonyusa. I-powder esebenza ngokugqibeleleyo kwiibhetshi ze-50kg zeprototyping inokuziphatha ngendlela eyahlukileyo kwi-2-toni yokuvelisa imveliso. Izinga lokupholisa kwinqaba ye-atomization inokwahluka, ekhokelela kwiinguqu ezifihlakeleyo kwi-microstructure. Kuya kufuneka unyanzelise ukuba kuqhutywe isikali esikufutshane nemveliso ngaphambi kokuba usayine. Iyabiza kwaye idla ixesha, kodwa inexabiso eliphantsi kunokukhumbula ngokupheleleyo.
Apho Konke Oku kuQhagamshela: Ikhonkco loNikezelo eliDityanisiweyo
Oku kundizisa kwindawo ebanzi. Ukuveliswa komgubo ayilonyathelo lodwa. Yeyona ikhonkco lokuqala kwitsheyini ebandakanya ukwenza, sintering, kwaye rhoqo imisebenzi yesibini efana CNC Machining okanye unyango olungaphezulu. Ezona ziphumo zintle ziza xa kukho impendulo kulo lonke ikhonkco.
Inkampani ephethe zombini ukuphosa okuphambili (iqokobhe ngundo ukuphosa, utyalo mali) kunye nokuchaneka komatshini, njengaleyo ungayifumana kuyo https://www.tsingtaocnc.com, iquka oku kudityaniswa. Babona ukusebenza kokugqibela kokusetyenziswa. Ukuba inxalenye abayisebenzisayo ukusuka kwi-Sintered PM ingenanto inobomi besixhobo esibi okanye uzinzo olungenakucingeleka, loo ngxelo kufuneka ibuyele kwi-sinterer, kwaye ekugqibeleni iye kumvelisi womgubo. Ngaba yayiyi-oxide efakwe kwi powder? Isuntswana elimngxuma eliye lawa ngexesha le-sintering? Oku kuqondwa kwe-loop evaliweyo yinto eyahlula iindawo ezilungileyo kwizinto ezinokwethenjelwa, eziphezulu zokusebenza.
Ke, xa ujonga icandelo le-PM eligqityiweyo, awujongi nje isinyithi esicinezelweyo kunye ne-sintered. Ujonge kwimbali yokunyibilika, ifiziksi ye-atomization nozzle, ulungiselelo lokuphatha, kunye nothotho lolawulo lokulalanisa. Umgubo yiDNA. Yaye njengeDNA, isiphako esincinane esingabonakaliyo sinokugqiba ikamva lomzimba uphela. Ukuyilungisa kuncinci malunga netekhnoloji ekhazimlayo kwaye ngakumbi malunga nokuhoywa okungapheliyo kwiinkcukacha, ezifundwe rhoqo ngamava aphumelele nzima.
