Xa iinjineli zichaza intsimbi yokubumba iinxalenye zomzi-mveliso Izisombululo ze-high-pressure hydraulic valves okanye i-cobalt-alloy pump nozzles, azithengi nje izinto-zikhusela uzinzo lwe-dimensional phantsi kwe-300 MPa yoxinzelelo, ukunyaniseka kwe-microstructural emva konyango lobushushu, kunye ne-zero batch-to-batch drift kwi-AMS 5387 i-alloy hardness. Yingakho ukuchaneka akulona ibango lokuthengisa apha-yimfuno yesiseko.
Sibone iiprojekthi ezininzi kakhulu zimile kwinqanaba leprototype kuba umthengisi okhethiweyo uphathe iMIM "njengenye inkqubo yomgubo." Ngokwenyani, ukubunjwa kwenaliti yesinyithi eyimpumelelo yemishini ebaluleke kakhulu kwimizi-mveliso kufuna ngaphezulu kuneziko lokutshisa kunye nempahla yokutya. Ifuna uqeqesho lwesinyithi kuyo yonke into efunwayo, ukulawula i-kinetics, iiprofayili ze-vacuum sintering ezilungiselelwe usapho lwe-alloy-kwaye ngokubalulekileyo-ukuhlanganiswa okuqinileyo kunye nokugqiba kwe-CNC kunye nokuhlolwa okuhambelana ne-GD&T. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. isebenza ngale ndlela ngaphandle kokukhetha kodwa ngoyilo: yonke i-MIM-derived valve valve housing, piston pump cylinder, okanye i-winch center shaft roller iqala nge-T800 cobalt-based based material ekrwada, hayi umgubo wentsimbi yegeneric.
Iinyani ezintathu zobugcisa zahlula amandla okwenyani kubathengisi bekhathalogu:
- Ukulandeleka kwezinto eziphathekayo akuxoxiswana. Iplagi enye ye-AMS 5387 cobalt alloy kufuneka iphathe amaxwebhu agcweleyo obushushu hayi nje ingxelo yovavanyo lokusila. Siqinisekisa umxholo womgubo weoksijini ongenayo (<0.025%), ukusabalalisa ubungakanani be-particle (D50 = 8-12 µm), kunye nemida yokushiya i-binder ngaphambi kokulayisha kumgca wokuxuba. Akukho ngaphandle.
- I-MIM ayizimele yodwa kumalungu asebenzayo. Phantse i-92% yamacandelo ethu avelisiweyo e-MIM afumana umatshini wesibini-ingakumbi kwiindawo zokutywina, iifom zentambo, kunye neejenali ezithwele. Iziko lethu elithobela i-ISO liqhuba amaziko e-CNC ane-multi-axis akufuphi ngqo nomgca we-sintering, esusa ukuthutha phakathi kwendawo ebeka emngciphekweni wokusasazwa kwe-micro-crack kwi-brittle superalloys.
- Ulawulo lomda lwenzeka phambi kokukhutshwa—kungekhona emva. Imbuyekezo ye-shrinkage ayisetyenziswa njengento yokugubungela. Kwindlu ye-cylinder ye-42-mm-diameter kwi-alloy ye-T800, senza imodeli yemiphumo ye-thermal gradient kwi-mold cavity, ukulungelelanisa i-green density gradients kwi-feedstock, kunye nokuqinisekisa ukunyamezela kokugqibela kusetyenziswa oomatshini bokulinganisa abalungelelanisiweyo abalinganiswe kwimigangatho ye-ISO 10360-2-hayi izithelekisi ezibonakalayo.
Abanye banokuxoxa ukuba utyalo-mali lwemveli lunikezela ngezakhiwo ezingcono zoomatshini kwiindawo ezishinyeneyo ze-cobalt. Kodwa idatha yethu ibonisa ngenye indlela: ngenxa yobunzima bodonga phantsi kwe-12 mm, i-MIM ihambisa i-15-18% yamandla aphezulu aphezulu kunye ne-22% yokuphucula ukunyamezela ukukhathala kwi-AMS 5387-kuba i-uniform fine-grained microstructure ithatha indawo yezakhiwo ze-dendritic cast. Urhwebo-off? Izithintelo zejometri eziqinileyo. Asiyamkeli i-MIM yamalungu anomlinganiselo ongaphezulu kwe-8:1 okanye iimpawu zangaphakathi ezincinci kuno-Ø0.3 mm ngaphandle kokwenziwa kwentsebenziswano kwakhona. Oko kunyaniseka kuthintela ukuphinda kusebenze kwakhona okunexabiso eliphezulu kamva.
Yintoni abasebenzisi abayibuza ngokwenene-kwaye zeziphi iinguqu kwiziphumo zeprojekthi-ayikho "Ngaba ungayenza?" kodwa “Ungakwazi ukubamba ±0.015 mm kumphezulu we-120-mm cylindrical *emva* kwe-nitriding?” okanye "Ngaba inxalenye yakho ye-T800 MIM iya kusinda kwimijikelo ye-10,000 kwi-180 ° C kwi-H₂S-rich-rich flow flow?" Impendulo yethu ihlala ixhaswa ziingxelo zovavanyo-hayi izithembiso. Ibhetshi nganye ibandakanya iisampulu zokuqina ezivavanyiweyo ngokwe-ASTM E8 nganye, ukuqina kwemephu kuzo zonke iindawo ezibalulekileyo, kunye nokuqinisekiswa kwesitshizi setyuwa kumphezulu ogqityiweyo. Sigcina iisampuli iminyaka emi-5. Ukuba umthengi ubuza imibuzo yokusebenza, sitsala ingxelo ye-CMM yoqobo, i-log ye-sintering, kunye ne-curve yonyango lokushisa-zonke zibotshelelwe kwinombolo enye ye-serial.
Elo nqanaba lokudityaniswa ngokuthe nkqo-isiqinisekiso sezinto eziphathekayo, ukusetyenzwa kwe-MIM, ukuchaneka komatshini, unyango lobushushu, kunye novavanyo olusebenzayo phantsi kophahla olunye-lithetha i-handoffs ezimbalwa, uhlalutyo lwengcambu olukhawulezayo, kunye nokungacaci kwe-zero xa into iwela ngaphandle kwe-spec. Kukwathetha ukuba sibamba imiba yokwenziwa kwangoko: kwikota yokugqibela, siphawule i-callout ye-GD&T ecingela ukushwabana kwe-isotropic kumzimba wevalvu entsonkothileyo. Uyilo ngokutsha lugcine umthengi iiveki ezintathu kunye ne-27,000 yeedola kwisixhobo esilahliweyo senqaku lokuqala.
Ukujonga phambili, i-bottleneck yangempela kwi-MIM ephezulu ye-alloy ayisona sixhobo-lulwazi lwesicelo. Sandisa ugxininiso lwethu lwe-R&D kwiinkqubo ezixutyiweyo: ukudibanisa iicores ze-MIM ezinemilo kunye namaqokobhe esanti-cast angaphandle achanekileyo kwiziseko zempompo ezinobubanzi obukhulu, emva koko senze kuphela imidibaniso esebenzayo. Oku kunciphisa ubunzima nge-31%, kuphucula ukuhanjiswa kwe-thermal mass, kwaye igcina ukuxhathisa okupheleleyo kwe-corrosion apho kubaluleke kakhulu.
Ukuba iodolo yakho elandelayo ibandakanya iinxalenye ze-MIM ze-cobalt-nickel kwiinkqubo ze-hydraulic, i-oyile kunye nezixhobo zenkonzo yegesi, okanye iindibano ze-winch yemoto yobunjineli-kwaye ufuna ukuphindaphindwa okubhaliweyo, kungekuphela nje ukunyamezelana okucatshulweyo-emva koko uqinisekisa eyona nkqubo yolawulo lwe-MIM yomthengisi ibaluleke ngaphezu kwebhena yewebhusayithi yabo. Buza ilog yabo yamva nje ye-AMS 5387 sintering. Cela ingxelo yabo yeCMM ngebhetshi yomlomo weT800 yakutsha nje. Qinisekisa ukuba "umzi-mveliso wabo wentsimbi wokubumba iinaliti zentsimbi" uphatha uqinisekiso lwemathiriyeli endlwini okanye ukhuphela ngaphandle. Iimpendulo ziya kukuxelela yonke into.
