Akatswiri akamatchula zitsulo zolondola kwambiri za mavavu a hydraulic, mapampu, kapena ma winch shafts—makamaka pamene akupanikizika kwambiri, atavala kwambiri, kapena akachita dzimbiri—samangofunika wogulitsa. Amafunika a mim zitsulo jekeseni akamaumba fakitale zomwe zimamvetsetsa machitidwe azitsulo, kukhazikika kwa dimensional, ndi machitidwe olephera - osati kulolerana pajambula.
Tawona ma projekiti ambiri akuyimilira pachiwonetsero chifukwa wopanga adasankha MIM ngati "njira ina yowumba." M'malo mwake, MIM yopambana pazigawo zofunika kwambiri za utumwi imafuna kuphatikizika kolimba pakati pa kusankha ufa, kupanga ma binder, kutulutsa kinetics, kuwongolera mbiri ya sintering, ndi makina a post-sinter. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., timachita gawo lililonse la MIM ngati mpando wa valve ya cobalt-nickel: kulakwitsa kumodzi pakuwongolera kaboni panthawi ya sintering kumatha kuyambitsa microcracking pansi pa 300-bar cyclic loading. Ichi ndichifukwa chake malo athu ogwirizana ndi ISO ku Qingdao satulutsa kutulutsa kapena kuwotcha - tili ndi matenthedwe onse, kuchokera pa 650 ° C catalytic debind mpaka 1280 ° C vacuum sintering ndikuwunika bwino kwa mame.
Ogula ambiri amanyalanyaza chopinga chachikulu: MIM imapambana pamawonekedwe a ukonde - koma mkati mwa malire okhwima a geometric. Makulidwe a khoma ayenera kukhala pakati pa 1.5 mm ndi 8 mm. Mawonekedwe opitilira 6:1 kachulukidwe kachiwopsezo. Njira zapansi? Zotheka - koma ndi zida za ceramic zomwe zimatha kugwa, osati zida wamba. Tathandiza makasitomala kukonzanso zigawo za mpope za AMS 5387 cobalt alloy kuti athetse ma radii akuthwa amkati, kudula kupotoza kwa sintering ndi 40% ndikusunga umphumphu wanjira. Izi sizongoyerekeza. Ndi zomwe zimachitika pamene inu mim zitsulo jekeseni akamaumba fakitale imayendetsa maere a 120+ MIM pachaka pazakudya zam'mlengalenga - ndikulemba kuchuluka kwa kuchepa kulikonse, vekitala ya warpage, ndi kuchulukira kosiyana pa batch iliyonse.
Izi ndi zomwe zimasiyanitsa kulondola kwa MIM ndi chinthu cha MIM:
- Kufufuza kwazinthu kumayamba ufa usanalowe mu hopper: Timatulutsa ma certified gas-atomized CoCrMo ndi T800 alloy powders okhala ndi malipoti athunthu a PMI-ndikutsimikizira zomwe zili ndi okosijeni, kagayidwe kake (D50 = 8.2-9.6 µm), komanso kachulukidwe kachulukidwe kake.
- Kubweza sikunachedwe - kumawunikidwa: M'malo mokhazikika nthawi yonyowa, timatsata kutayika kwa nthawi yeniyeni kudzera mu masensa a gravimetric. Chomangira chotsalira cha 0,3% chimayambitsa kusintha kwa mbiri - chifukwa kuchotsa kosakwanira kumayambitsa kutupa; over-debinding kuitana cracking.
- Mbiri za Sintering ndizokhazikika, osati za ng'anjo: Nyumba ya silinda ya pampu ya pisitoni imatsika pang'onopang'ono kupyola 800-1000°C kuposa mphuno yopyapyala. Timasintha nthawi zokhala kutengera kutengera kuchuluka kwa matenthedwe—osati tchati chaluso.
- Ma geometry a Post-sinter sangakambirane: Gawo lililonse la MIM limawunikiridwa ndi CMM motsutsana ndi ma callout a GD&T-osati miyeso yokha. Timayezera kuthyathyalika pamalo osindikizira kufika ±1.2 µm, cylindricity pa shaft magazines kufika pa 0.8 µm, ndi kukhwimitsa pamwamba (Ra) panjira zamadzimadzi kufika ≤0.4 µm—kutsimikiziridwa ndi optical profilometry.
Ena anganene kuti makina a CNC amapereka zolondola kuposa MIM. Zowona-kwa ma geometries osavuta. Koma yesani kugwira ± 0.015 mm concentricity kudutsa mabowo asanu a coaxial mu maziko amodzi a 316L achitsulo chosapanga dzimbiri, iliyonse ili ndi ulusi wamkati ndi madoko obowoleza opaka mafuta. Kukonza gawolo kumafuna kuyikapo kasanu ndi kamodzi, kusintha katatu, ndi kusuntha kosalephereka kwa kutentha. Mtundu wa MIM? Gawo limodzi lobiriwira, sinter imodzi, ntchito yomaliza yomaliza-ndi 22% yotsika mtengo wonse pamavoliyumu oposa 500 pcs / chaka. Tikutsimikizira: kotala lapitalo, tidapereka 1,200 T800 alloy center shaft rollers ya injini ya winchi yamagalimoto. Zonse zidadutsa kuyesa kwa 100% pa 18,500 N axial force-zero rework.
Kudalirika kumeneko kumachokera ku kuphatikiza koyima komwe mungatsimikizire. Malo athu samangokhala ndi makina osindikizira a MIM ndi ng'anjo za sinter-komanso malo olondola a CNC omwe amatha kutembenuza molimba mbali za CoCr pa 85 HRC, ma uvuni otenthetsera kutentha omwe amafikira ± 2 ° C, ndi mizere yodutsamo ikugwirizana ndi ASTM A967. Wogula akatumiza chojambula cha pulagi ya AMS 5387 yokhala ndi mabowo osawona komanso nkhope zomata, sitifunsa kuti "Kodi mungathe?" Timafunsa kuti: "Kodi vuto la kupsinjika maganizo kwambiri ndi liti? Kodi moyo wautumiki woyembekezeredwa ndi wotani? Kenako timasankha feedstock yabwino, kutengera kupotoza kwa sintering mu Simufact Additive, kumanga nkhungu ndi chitsulo cholimba cha H13 ndi njira zoziziritsira zofananira, ndikutsekera magawo asanayambe kuwombera koyamba.
Ngati mukuyesa a mim zitsulo jekeseni akamaumba fakitale, dumphani timabuku tonyezimira. Funsani: (1) ma sintering lot record osonyeza kusiyanasiyana kwa kachulukidwe pakupanga, (2) Malipoti a CMM akuyerekeza as-sintered vs. finish geometry pa mbali yofanana ndi yanu, ndi (3) umboni wa certification wa zinthu za kalasi yanu yeniyeni ya aloyi—osati “ISO 13322-2 compliant powder.” Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., zikalatazo sizinatsekeredwe mu kabati yamafayilo. Amalumikizidwa ndi PO iliyonse, amasinthidwa munthawi yeniyeni, ndikugawidwa musanavomereze zida. Chifukwa kulondola si dipatimenti. Ndiko kukhazikika kokhazikika.
