Pamene mainjiniya afotokoza zitsulo jekeseni akamaumba mbali fakitale njira zothetsera ma valve othamanga kwambiri a hydraulic valves kapena ma nozzles apampu a cobalt-alloy, sikuti amangogula zigawo-amateteza kukhazikika kwapakati pa 300 MPa kupsinjika, kukhulupirika kwa microstructural pambuyo pa chithandizo cha kutentha, ndi zero batch-to-batch drift mu AMS 5387 alloy hardness. Ichi ndichifukwa chake kulondola sikungonena zamalonda pano-ndizofunika zoyambira.
Tawona ma projekiti ambiri akuyimilira pachiwonetsero chifukwa wosankhidwayo adatenga MIM ngati "njira ina ya ufa." M'malo mwake, kuumba bwino jekeseni wazitsulo m'mafakitale ofunikira kwambiri kumafuna zambiri kuposa ng'anjo zowotchera ndi feedstock. Pamafunika kuwongolera zitsulo pakupanga zinthu zonse, kuwongolera kwa kinetics, mbiri ya vacuum sintering yokonzedwa ndi banja la aloyi - komanso kuphatikiza kolimba ndi kutsirizitsa kwa CNC ndi kuyang'anira kogwirizana ndi GD&T. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. imagwira ntchito motere osati mwapadera koma ndi mapangidwe: nyumba iliyonse yochokera ku MIM yochokera ku MIM, silinda ya pampu ya pistoni, kapena chogudubuza cha winch center shaft imayamba ndi zopangira zovomerezeka za T800 za cobalt, osati ufa wachitsulo wosapanga dzimbiri.
Zowona zitatu zaukadaulo zimasiyanitsa kuthekera kowona kuchokera kwa ogulitsa makatalogu:
- Kufufuza kwazinthu sikungakambirane. Pulagi imodzi ya AMS 5387 cobalt alloy iyenera kukhala ndi zolemba zonse za kutentha-osati lipoti loyesa mphero. Timatsimikizira kuchuluka kwa okosijeni wa ufa (<0.025%), kugawa kukula kwa tinthu (D50 = 8-12 µm), ndi malire otsalira a binder musanalowe mu mzere wosakaniza. Palibe kuchotserapo.
- MIM siyoyimilira pazigawo zogwira ntchito. Pafupifupi 92% ya zida zathu zopangidwa ndi MIM zimachitidwanso ndi makina achiwiri, makamaka posindikiza, mawonekedwe a ulusi, ndi zolemba. Malo athu ogwirizana ndi ISO amayendetsa malo olumikizirana ma CNC amitundu yambiri moyandikana ndi mzere wa sintering, ndikuchotsa mayendedwe apakatikati omwe amaika pachiwopsezo kufalikira kwa ma brittle superalloys.
- Kuwongolera koyang'ana kumachitika musanatulutsidwe-osati pambuyo pake. Chiwongoladzanja cha shrinkage sichimagwiritsidwa ntchito ngati chofunda. Panyumba ya silinda ya 42-mm-diameter mu T800 alloy, timatengera matenthedwe amtundu wamafuta pabowo la nkhungu, kusintha kachulukidwe kobiriwira mu feedstock, ndikutsimikizira kulolerana komaliza pogwiritsa ntchito makina oyezera ogwirizana omwe ali mumiyezo ya ISO 10360-2-osati ofananitsa.
Ena angatsutse kuti kuyika ndalama zachikhalidwe kumapereka zida zabwino zamakina pazigawo zazikuluzikulu za cobalt. Koma deta yathu ikuwonetsa mosiyana: kwa makulidwe a khoma pansi pa 12 mm, MIM imapereka mphamvu zopitirira 15-18% ndi 22% yowonjezera kukana kutopa mu AMS 5387-chifukwa yunifolomu yabwino-grained microstructure imalowa m'malo mwa mapangidwe a dendritic cast. Kusinthanitsa? Zopinga zolimba za geometric. Sitivomereza MIM pazigawo zokhala ndi mareyezino opitilira 8:1 kapena zamkati zochepera Ø0.3 mm popanda kukonzanso. Kuwona mtima kumeneko kumalepheretsa kukonzanso kokwera mtengo pambuyo pake.
Zomwe ogwiritsa ntchito amafunsa-ndi zomwe zimasintha zotsatira za projekiti-sikuti "Kodi mutha kuzipanga?" koma "Kodi mutha kugwira ± 0.015 mm pamtunda wa 120-mm cylindrical * pambuyo * nitriding?" kapena "Kodi gawo lanu la T800 MIM lidzapulumuka mizunguliro 10,000 pa 180 ° C mukuyenda kwamafuta olemera a H₂S?" Yankho lathu nthawi zonse limathandizidwa ndi malipoti oyesa-osati malonjezo. Gulu lililonse limaphatikizapo zitsanzo zolimba zoyesedwa pa ASTM E8, kulimba kwa mapu kumadera ovuta, ndi kutsimikizira kwa utsi wa mchere pamalo omalizidwa. Timasunga zitsanzo kwa zaka 5. Ngati kasitomala afunsa momwe zimagwirira ntchito, timakoka lipoti loyambirira la CMM, chipika cha sintering, ndi curve yochizira kutentha-zonse zomangika ku nambala imodzi.
Mulingo wophatikizika woyima - kuyenerera kwazinthu, kukonza kwa MIM, kukonza bwino, chithandizo cha kutentha, ndi kuyesa magwiridwe antchito pansi pa denga limodzi - kumatanthauza kutsika kwapang'onopang'ono, kusanthula koyambitsa mizu mwachangu, komanso kusamveka bwino ngati china chake chigwera kunja. Zikutanthauzanso kuti timapeza zovuta zopanga zinthu koyambirira: kotala yatha, tidayimitsa callout ya GD&T yomwe imatengera kutsika kwa isotropic mu thupi lovuta la vavu. Kukonzanso kunapulumutsa makasitomala masabata atatu ndi $27,000 pazida zomwe zidasiyidwa m'nkhani yoyamba.
Kuyang'ana m'tsogolo, botolo lenileni la alloy MIM si zida - ndi chidziwitso cha ntchito. Tikukulitsa kuyang'ana kwathu kwa R&D panjira zosakanizidwa: kuphatikiza ma cores a MIM opangidwa ndi ukonde ndi zipolopolo zakunja zoponyedwa mchenga za maziko a mapampu akulu akulu, kenako ndikungopanga zolumikizira zogwirira ntchito. Izi zimachepetsa kulemera ndi 31%, kumathandizira kugawa kwamafuta ambiri, ndikusunga kukana kwa dzimbiri komwe kuli kofunikira kwambiri.
Ngati kuyitanitsa kwanu kudzakhudza mbali za cobalt-nickel MIM zama hydraulic system, zida zamafuta & gasi, kapena makina opangira makina opangira makina - ndipo mukufuna kubwereza zolembedwa, osati kulolerana kotchulidwa - ndiye kutsimikizira kuwongolera kwenikweni kwa MIM kwa omwe akugulitsa kumafunika kuposa chikwangwani chatsamba lawo. Funsani zolemba zawo zaposachedwa za AMS 5387 sintering. Funsani lipoti lawo la CMM pagulu laposachedwa la T800 nozzle. Tsimikizirani ngati fakitale yawo ya "zitsulo zomangira ma jakisoni" imagwira ntchito zotsimikizira mkati kapena kunja. Mayankho adzakuuzani zonse.
