Mukamva za 'MIM powder metallurgy', chithunzi chomwe chilipo nthawi zambiri chimakhala changwiro, ting'onoting'ono, tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono. Ndiyo nkhani ya kabukuka. Zowona, zomwe ndakhala nazo kwa zaka zambiri, ndizosokoneza, zochulukirapo, komanso zowona, zosangalatsa kwambiri. Sizongokhudza kukanikiza ndi kuimba; ndi kukambirana kosalekeza pakati pa machitidwe a feedstock, kuvala kwa zida, ndi momwe ng'anjo ikukhalira tsiku limenelo. Obwera kumene ambiri, ngakhale ogula ena, amaganiza kuti ndi chipolopolo chamatsenga chamtundu uliwonse wovuta, kuyang'ana zopinga zazikulu za kulongedza tinthu tating'onoting'ono ndi makina omangira. Kusiyana kumeneku pakati pa kuzindikira ndi zenizeni zenizeni ndipamene ntchito yeniyeni imachitika.
The Core Dance: Feedstock ndi Zida
Mtima wa MIM si ufa wachitsulo wokha; ndi feedstock-kusakaniza kofanana kwa ufa wabwino ndi makina omangira amitundu yambiri. Kupeza mamasukidwe akayendedwe bwino ndi luso kuposa sayansi nthawi zina. Mutha kukhala ndi ufa wabwino kwambiri wa 17-4PH wopangidwa ndi gasi, koma ngati chomangiracho chazimitsidwa pang'onopang'ono, mudzawona zovuta pakuwumba, monga kudzaza kwa jetting kapena kusakwanira, zomwe zimangowonekera panthawi ya debinding. Ndikukumbukira ntchito ina yopangira zida zopangira opaleshoni komwe tinkalimbana ndi ma sink marks kwa milungu ingapo. Choyambitsa sichinali kutentha kwa nkhungu kapena kukakamizidwa, koma kusagwirizana pang'ono mu phale la feedstock kuchokera kwa ogulitsa. Zinatibwezeranso pabwalo wani.
Ndipo tooling. Anthu amapeputsa kuvala kwa nkhungu za MIM. Chifukwa mukubaya slurry, zinthu zofunika kwambiri, makamaka mano ang'onoang'ono pamagetsi ang'onoang'ono a actuator yolondola, amatha kuzimiririka mwachangu kuposa momwe amapangira jakisoni wapulasitiki. Muyenera kukonzekera izi, kupanga malipiro, kapena kutchula chitsulo cholimba kwambiri kuyambira poyambira. Ndi mtengo womwe nthawi zambiri umaphonya pamawu oyambira.
Apa ndipamene wothandizana naye yemwe ali ndi mbiri yakuya yazinthu ndizofunikira. Kampani ngati Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., mwachitsanzo, imabweretsa zaka zambiri zaukadaulo kuchokera kuzinthu zopanga ndalama komanso kupanga makina patebulo. Pomwe tsamba lawo lalikulu lili tsngtaocnc.com kufotokozera ntchito yawo ndi ma alloys, kuti chidziwitso choyambirira ndi chofunikira. Mukagwira ma superalloys osungunuka, mumamvetsetsa kapangidwe ka tirigu ndi kusintha kwa gawo pamlingo womwe umadziwitsa momwe mumayendera sintering a. MIM powder zitsulo gawo lopangidwa kuchokera ku banja limodzi la aloyi. Ndi njira yosiyana, koma zolinga zazitsulo ndizofanana.
Magawo Opanga-kapena-Kusweka: Kutsekereza ndi Kusokoneza
Ili ndiye bokosi lakuda lenileni la MIM. Catalytic debinding, solvent debinding, thermal-chilichonse chimakhala ndi misampha yake. Mofulumira kwambiri, ndipo mumapeza ming'alu kapena matuza pamene womangira akuyesa kuthawa. Kuchedwa kwambiri, ndi akasinja anu kupanga throughput. Ndawonapo mbali zina zikutuluka mu chiboliboli chotenthetsera chowoneka bwino, koma zimangoyenda mowopsa mung'anjo yoyaka chifukwa chotsalira cha zomangira zidapangitsa kupanikizika kwamkati. Ndi zowona zokhumudwitsa.
Sintering ndipamene matsenga ndi zoopsa zimaphatikizana. Simukungosungunuka; mukuthandizira kufalikira kwa atomiki kudutsa malire a tinthu. Mbiri ya kutentha, mpweya (hydrogen, nitrogen, vacuum), ndi nthawi ndizo zonse. Kwa gawo lachitsulo chosapanga dzimbiri, madigiri angapo okwera kwambiri kapena nthawi yonyowa nthawi yayitali kungayambitse kukula kwambewu, kupha mawotchi. Kupeza chithandizo cha sintering moyenera kuti mupewe kusokonekera ndi luso lina lonse. Sikuti kungoyika zigawo pa mbale yafulati.
Izi zikugwirizana ndi ukatswiri wa zinthu zakuthupi. Mbiri ya QSY popanga ma aloyi apadera monga opangidwa ndi cobalt ndi nickel ndiofunikira apa. Izi ndi zida zovuta kuti mulembe mu MIM. Kudziwa kutentha kwawo kwa solidus / liquidus, momwe amachitira ndi carbon panthawi ya sintering, ndi zosowa zawo zomaliza zochizira kutentha kuchokera pakuponyedwa kumapatsa gulu chiyambi chachikulu. Zimalepheretsa zolakwika za rookie zochitira zitsulo zonse mofanana mu ng'anjo.
Kuphatikizana ndi Ntchito Zachiwiri
Sikawirikawiri kuti gawo la MIM limatuluka pa lamba wokonzeka kutumizidwa. Pafupifupi nthawi zonse, mumafunikira makina achiwiri. Iyi ndi mfundo yofunika kwambiri. Kuchepa kwa sintering, komwe nthawi zambiri kumakhala 15-20%, ndikodziwikiratu koma sikufanana bwino. Chifukwa chake, mumazipangira, ndikusiya mawonekedwe ovuta ngati ulusi kapena malo osindikizira ngati malo opindika, kapena mumasiya katundu kuti mukadutse komaliza.
Apa ndipamene ntchito yophatikizika yokhazikika imawonetsa mtengo wake. Ngati wopereka wanu wa MIM alinso ndi kuthekera kolimba kwa CNC, monga zowunikira za QSY ndi ma CNC machining services, kuzungulira kwa mayankho kumakhala kolimba. Gulu lopanga makina litha kuuza gulu la MIM, Mawonekedwe awa akusuntha ndi 0.05mm batch-to-batch, kodi tingathe kusintha zida kapena sintering fixture? Kugwirizana kwamkati kumeneko kumathetsa mavuto mwachangu kwambiri kuposa kutumiza magawo obiriwira kumalo ogulitsira akunja omwe samamvetsetsa momwe zimakhalira.
Ndagwirapo ntchito pamatupi olumikizira pomwe mabowo apini olondola amafunikira kukonzanso pambuyo pa sinter. Kupanga makinawa m'nyumba, mainjiniya ochokera mbali zonse amalankhula tsiku ndi tsiku, zidatilola kuti tisinthe mawonekedwe a feedstock pang'ono kuti tichite bwino popanda kusokoneza kachulukidwe ka sintered. Zinasintha gawo lamavuto kukhala lodalirika.
Kusankha Zinthu: Osati Kusankha Kwamabungwe
Kusankha zinthu za a MIM powder zitsulo gawo silili ngati kusankha pa menyu. Inde, muli ndi miyezo: 316L, 17-4PH, Fe-Ni alloys. Koma kusasinthasintha kwa ufa wambiri, kukula kwa tinthu (PSD), komanso zomwe zili ndi okosijeni ndizofunikira kwambiri. PSD yolimba imatha kupereka kulongedza bwino komanso kutha kwapamwamba koma imatha kuwononga 30% yochulukirapo. Pazovala zapamwamba, mungakhale mukuyang'ana zitsulo monga M2, koma maulendo anu omangirira ndi otsekemera amakhala ovuta kwambiri.
Ili ndi gawo lina lomwe luso la alloy lalikulu limalipira. Kampani yodziwa kupanga zitsulo zosapanga dzimbiri ndi ma alloys apadera idzakhala ndi chidziwitso chotsimikizika cha zomwe zimafunikira pakumaliza. Sakhala ndi mwayi woti afotokozere zamtengo wapatali kwambiri pantchito yomwe 400-mndandanda wosapanga dzimbiri ungagwire, kapena mosinthanitsa. Amamvetsetsa kukana kwa dzimbiri, kutentha kwambiri, komanso kuvala osati monga momwe zidziwitso zimakhalira, koma monga machitidwe adziko lenileni kuchokera ku mbiri yawo yakuponya. Chiweruzo chimenecho ndi chofunikira kwambiri polangiza za kusankha kwa zinthu za MIM.
Kuwona Kwenikweni: Pamene MIM Si Yankho
Mbali ina ya kukhala katswiri pa ntchitoyi ndi kudziwa nthawi yoti ayi. MIM ndi yowoneka bwino pamagawo amphamvu kwambiri, ovuta, ang'onoang'ono mpaka apakatikati. Koma ngati geometry ndi yosavuta spacer, tembenukirani ku Machining. Ngati mukufuna mtheradi, kachulukidwe ka isotropic wopanda porosity yotsalira ya valavu yapamwamba kwambiri yazamlengalenga, mutha kukhalabe mdera lothandizira ndalama. Ngati voliyumu yapachaka ndi zidutswa za 10,000 zokha, mtengo wa zida zitha kupha ROI.
Ndakhala mbali yama projekiti pomwe tidayesa kukankhira MIM muzofunsira zomwe sizinali zoyenera, kukopeka ndi zovuta zake. Imodzi inali bulaketi yayikulu kwambiri. Tidakwanitsa kupotoza kwa sintering, koma kusasinthika kwapang'onopang'ono kumakina sikunali kokwanira pakuyesa kutopa kwa kasitomala. Tinamaliza kuphatikizira - kugwiritsa ntchito MIM ngati malo ovuta kwambiri ndikuwotchera pamtanda wopukutira pamkono. Zinagwira ntchito, koma linali phunziro la malire a ndondomeko.
Pamapeto pake, zopambana MIM powder zitsulo ndi za fit. Ndi chida champhamvu mu bokosi la zida zopangira, koma osati chokhacho. Zotsatira zabwino kwambiri zimachokera kwa abwenzi omwe amamvetsetsa malo onse - kuchokera ku ufa mpaka kutha - ndipo amatha kuyendetsa malonda ndi maso owoneka bwino, pragmatism ya pansi pa sitolo. Ndiko kusiyana pakati pa njira yongoyerekeza ndi njira yodalirika yopangira.
