Iyo ba injeniyeri bagaragaje uruganda rukora ibyuma ibisubizo byumuvuduko ukabije wa hydraulic valves cyangwa cobalt-alloy pump nozzles, ntabwo bagura ibice gusa - birinda umutekano muke munsi ya 300 MPa, ubunyangamugayo bwa microstructural nyuma yo kuvura ubushyuhe, hamwe na zero batch-to-batch drift muri AMS 5387 gukomera. Niyo mpamvu precision atari ikirego cyo kwamamaza hano-nibisabwa byibanze.
Twabonye imishinga myinshi ihagaze kuri prototype kuko uwatanze isoko yahisemo MIM nk "ubundi buryo bwo gukora ifu." Mubyukuri, uburyo bwiza bwo gutera inshinge kubice byinganda zinganda bisaba ibirenze gucana itanura ryamatungo. Irasaba disipulini ya metallurgjiya ikomoka kubintu, kugenzura ibikorwa bya kinetics, imyirondoro ya vacuum yerekana imyirondoro yagenzuwe kumuryango wa alloy - kandi cyane cyane - guhuza cyane na CNC kurangiza no kugenzura GD & T-bikurikiza. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ikora muri ubu buryo ntabwo idasanzwe ahubwo ni igishushanyo mbonera: buri nzu ya MIM ikomoka kumuvuduko wamazu, inzu ya piston pompe, cyangwa winch center shaft roller itangirana nibikoresho byemewe bya T800 cobalt, ntabwo ari ifu yicyuma rusange.
Ibintu bitatu bya tekiniki bitandukanya ubushobozi nyabwo nabacuruzi ba catalog:
- Gukurikirana ibikoresho ntabwo biganirwaho. Imashini imwe ya AMS 5387 cobalt alloy plug igomba kuba ifite ubushyuhe bwuzuye bwuzuye - ntabwo ari raporo yikizamini gusa. Tugenzura ifu ya ogisijeni yinjira (<0.025%), ingano yubunini bwo gukwirakwiza (D50 = 8-12 µm), hamwe nimbibi zisigaye mbere yo gupakira mumurongo uvanze. Nta na kimwe kidasanzwe.
- MIM ntabwo yihagararaho kubice bikora. Hafi ya 92% yibice byakozwe na MIM bikoreshwa muburyo bwa kabiri - cyane cyane kubifunga hejuru, imiterere yumutwe, hamwe nibinyamakuru. Ikigo cyacu cyujuje ISO gikoresha imirongo myinshi ya CNC ibigo byegeranye n'umurongo wacumuye, bikuraho inzira ihuza ibigo bishobora kwanduza mikorobe ikabije muri superalloys.
- Kugenzura ibipimo bibaho mbere yo gusohora - ntabwo nyuma. Kugabanuka kwindishyi ntabwo bikoreshwa nkikintu cyo gupfuka. Kububiko bwa silindiri ya mm-42 ya diametre muri T800 alloy, twerekana ingaruka ziterwa nubushyuhe bwumuriro hejuru yikibumbano, duhindura icyatsi kibisi cyatsi, kandi twemeza kwihanganira kwanyuma dukoresheje imashini zipima ibipimo byahujwe na ISO 10360-2 - ntabwo bigereranya optique.
Bamwe bashobora kuvuga ko gushora imari gakondo bitanga ibikoresho byiza byububiko bwa cobalt. Ariko amakuru yacu arerekana ukundi: kubwubugari bwurukuta munsi ya mm 12, MIM itanga imbaraga zingana na 15-18% hamwe na 22% byongerewe imbaraga zo kurwanya umunaniro muri AMS 5387 - kubera ko microstructure imwe yuzuye ingano isimbuza dendritic cast. Ubucuruzi? Inzitizi zikomeye za geometrike. Ntabwo twemeye MIM kubice bifite ibipimo bifatika hejuru ya 8: 1 cyangwa ibintu byimbere bitarenze mm 0.3 mm nta bufatanye bushya. Ubwo kuba inyangamugayo birinda gukora cyane.
Ni iki abakoresha babaza - kandi ni iki gihindura ibisubizo by'umushinga - ntabwo "Urashobora kubikora?" ariko “Urashobora gufata mm 0.015 mm hejuru ya mm 120 ya silindrike * nyuma ya * nitriding?” cyangwa "Igice cya T800 MIM kizarokoka 10,000 10,000 kuri 180 ° C mumavuta akungahaye kuri H₂S?" Igisubizo cyacu gihora gishyigikiwe na raporo y'ibizamini - ntabwo ari amasezerano. Buri cyiciro kirimo ingero zipimishije zapimwe kuri ASTM E8, gushushanya amakarita ahantu hakeye, no kwemeza umunyu-spray kubutaka bwuzuye. Tugumana ingero kumyaka 5. Niba umukiriya abajije imikorere, dukurura raporo yumwimerere ya CMM, igicapo cyo gucumura, hamwe nubushyuhe bwo kuvura umurongo - byose bihujwe numero imwe yuruhererekane.
Urwo rwego rwo guhuza vertical-qualificatif material, gutunganya MIM, gutunganya neza, kuvura ubushyuhe, no gupima imikorere munsi yinzu imwe - bisobanura amaboko make, isesengura ryihuse ryimpamvu, hamwe no kudasobanuka zeru mugihe ikintu kiguye hanze yicyerekezo. Bisobanura kandi ko dufata ibibazo byinganda hakiri kare: igihembwe gishize, twashyize ahagaragara umuhamagaro wa GD&T wibwiraga ko kugabanuka kwa isotropic mumubiri wa valve bigoye. Redesign yakijije umukiriya ibyumweru bitatu na $ 27,000 mugikoresho cyakuweho ingingo ya mbere.
Urebye imbere, icyuho nyacyo muri all-alloy MIM ntabwo ari ibikoresho-ni ubumenyi bwo gusaba. Turimo kwagura R&D yibanda kubikorwa bya Hybrid: guhuza MIM net net-shusho ya cores hamwe na shell-cast-out shell shells for fondasiyo nini ya pompe ya pompe, hanyuma tugakora gusa intera ikora. Ibi bigabanya ibiro 31%, bitezimbere gukwirakwiza ubushyuhe bwumuriro, kandi bigumana imbaraga zo kurwanya ruswa aho bifite akamaro kanini.
Niba gahunda yawe itaha irimo cobalt-nikel MIM ibice bya sisitemu ya hydraulic, ibikoresho bya serivise ya peteroli na gazi, cyangwa inteko zikora imashini zikoresha imashini - kandi ukeneye ibyasubiwemo byanditse, ntabwo byavuzwe gusa kwihanganira - hanyuma ugenzure ibintu nyabyo bitanga kugenzura ibikorwa bya MIM kuruta ibendera ryurubuga rwabo. Baza AMS 5387 yanyuma yo gucumura. Saba raporo yabo ya CMM kubice bya T800 biherutse. Emeza niba "uruganda rwabo rwo guteramo ibyuma" rukora ibyemezo byo munzu cyangwa kubitanga hanze. Ibisubizo bizakubwira byose.
