Xa iinjineli zidinga iindawo zentsimbi ezichanekileyo ezimelana ne-30,000 psi hydraulic pressure, zixhathise i-galling kwizindlu zempompo zamanzi anetyuwa, okanye zigcine uzinzo emva kwe-800 ° C yonyango lobushushu-i-machining eqhelekileyo okanye ukufa kwe-fae kuvame ukuwa. Kulapho kuyinyaniso inkqubo yokubumba inaliti yesinyithi ifumana indawo yayo: hayi njengomboneleli wegeneric, kodwa njengeqabane lobuchwephesha elinolwazi kwifiziksi ye-fiziksi ecolekileyo, i-binder burnout kinetics, kunye nembuyekezo ye-sintering shrinkage.
Siye sabona abathengi bethumela i-MIM prototypes kunye ne-± 0.3% yokunyamezela komgca-kuphela ukufumanisa ngexesha lovavanyo olusebenzayo ukuba i-cobalt alloy nozzles ijike phantsi kwebhayisikile eshushu. Oyena nobangela? Ulawulo olungonelanga kumazinga eendlela ezitsalelanayo kunye neqondo lombethe we-sintering atmosphere. Kwi-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Iqashiso le-MIM ngalinye liqala nge-AMS 5387 okanye i-T800 yesiqinisekiso se powder lot-kungekhona nje idatha ye-tensile, kodwa umxholo we-oksijini, ukusabalalisa ubungakanani bamasuntswana (D50 ≤ 8.2 µm), kunye nokuqinisekisa ukuxinana kwempompo. Siyala iibhetshi ngaphandle kwe-4.2–4.4 g/cm³. Oku akukho overkill. Yindlela esibamba ngayo i-± 0.05 mm kwi-12-mm-diameter yepiston yepompo yesilinda yezindlu zokubhoboza emva kokuntywila.
Iifektri ezininzi zithatha iMIM “njengomgubo + ukungunda + umlilo.” Siyiphatha njengemigaqo emithathu edityaniswe ngokuqinileyo: ukwenziwa kwe-rheology-controlled feedstock, uyilo oluchanekileyo lwe-mold cavity calibrated for anisotropic shrinkage, kunye ne-atmospheric-controling sintering kunye nexesha lokwenyani lokuhlola uxinzelelo lweoksijini. Ngokomzekelo, iiplagi zethu ze-cobalt-nickel alloy zifuna iphrofayili ye-sintering yezigaba ezimbini: imizuzu ye-60 kwi-1150 ° C kwi-5% H₂-95% N₂ ukususa i-carbon eseleyo, emva koko imizuzu ye-90 kwi-1320 ° C kwi-hydrogen ecocekileyo ukufikelela> 99.2% ubuninzi. Tsiba naliphi na inyathelo, kwaye ubulukhuni buyehla ukusuka kwi-42 HRC ukuya kwi-36 HRC-ngokwaneleyo ukubangela ukunxiba kwangaphambi kwexesha kwizihlalo zevalve ephezulu. Sifaka yonke ipharamitha. Ibhetshi nganye iphethe umkhondo ogcweleyo: iqashiso lomgubo, iqashiso lokubopha, isazisi somgodi wokungunda, indawo yomlilo yokutshisa, kunye nengxelo yokuhlolwa kweCMM.
Ukudityaniswa okuthe nkqo kuyasahlula kubathengisi. Asikhupheli ngaphandle sintering. Asifuni ukwenza oomatshini bokugqibela. Iziko lethu elithobela i-ISO liqhuba i-MIM ecaleni komatshini we-CNC we-axis emihlanu, ukuphosa utyalo-mali, kunye nonyango lobushushu bevacuum-konke kuphantsi kophahla olunye. Xa umthengi ethumela umzobo we-GD & T we-AMS 5387 inxalenye yepompo ene-callouts yendawo yokwenyani kwiibhobho ezisibhozo ze-Ø3.2 mm ngokubhekiselele kwi-Ø25 mm datum, asifuni ukucaciswa. Silinganisa ukuphambuka okubangelwa kumendo wesixhobo, silungelelanisa ukugqwetheka kwangethuba sisebenzisa iimephu zembali yokuncipha, kwaye sisebenzise ukujika kokukhanya kuphela apho imiphezulu yokutywina ifuna iRa ≤ 0.4 µm. Akukho kuphinda kusebenze. Akukho nto imangalisayo. Ukuthobela nje ipasi lokuqala.
Ukuhanjiswa kwelizwe lokwenyani kuxhomekeke kwinto eyenzekayo phambi kokudubula kokuqala. Siye saphonononga ngaphezulu kwe-1,200 imizobo elungele i-MIM ukususela ngo-2020-kwaye safumana amanqaku amathathu angaphumeleli aphindaphindiweyo: ii-undercuts ezifuna i-EDM sinker electrode endaweni yentsimbi eqhelekileyo yokubumba, ukuguqulwa kodonga oludlula i-3: umlinganiselo we-1 (obangela ukuhlukana okungafaniyo), kunye nemingxuma eyimfama enzulu kune-4 × ububanzi (i-binder yokubambisa). Iqela lethu lobunjineli libonisa oku kuphononongo lwangaphambi koveliso-simahla-kwaye licebise ngee-tweaks zejometri ezehlisa ixabiso nge-22% ngokomndilili. Omnye umxhasi wezixhobo ze-oyile yaseMntla Melika unciphise ixesha lokukhokela ukusuka kwiiveki ezili-14 ukuya kwiiveki ezi-6.5 emva kokwamkela ingxelo yethu ye-DFM.
Ukuba isicelo sakho sifuna ukuphinda-phinda kwiiyunithi ezingama-5,000, ukuhambelana kwesinyithi kwiibhetshi ezingama-20, okanye ukuqinisekiswa okusebenzayo ngaphaya kwe-ASTM B962, udinga ngaphezulu komzi-mveliso wenkqubo yokubumba inaliti yesinyithi. Ufuna iqabane eliphatha yonke igram ye-cobalt alloy njenge-calibrated instrumentation-kwaye ulinganisa impumelelo kungekhona kwiibhokisi ezithunyelwayo, kodwa kwiintsilelo zentsimi zero emva kweeyure zokusebenza ze-10,000. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakha loo ngqiniseko kuyo yonke inyathelo lenkqubo. Hayi njengethiyori. Njengoqheliselo lwemihla ngemihla.
