Micro peev casting muab precision net-shaped hlau qhov chaw nyob rau hauv 50 grams-feem ntau raws li lub teeb li 0.5 g-nrog tolerances nruj dua ± 0.05 hli thiab nto tiav mus rau Ra 1.6 µm. Thaum koj lub rooj zaum hydraulic yuav tsum muab khi rau ntawm 420 bar, lossis koj lub tshuab cobalt alloy lub twj tso kua mis muaj sia nyob 800 ° C thermal cycling thaum tiv thaiv kev yaig los ntawm abrasive slurry, micro peev casting tsis yog ib qho yooj yim. Nws yog tib txoj kev uas tuav cov geometry, cov qauv nplej, thiab chemistry nyob rau hauv lockstep hla txhua qhov ntau.
Peb tau tsim ntau tshaj 17,000 micro-cast Cheebtsam txij li xyoo 2019-feem ntau AMS 5387 cobalt alloy nozzles, T800-raws li lub hauv paus ncej chais, thiab stainless hlau piston twj tso kua mis nyob hauv qab 32 hli nyob ntev ntev. Nyob rau hauv txhua txhua batch, peb pom ib yam kev muaj tiag: txheem peev casting poob qis dua 10 g. Pwm kev ncaj ncees collapses. Wax qauv distortion spikes saum 3%. Ceramic plhaub permeability poob. Hlau sau ua unpredictable. Tias yog vim li cas "micro" tsis yog hais txog qhov loj me xwb - nws yog hais txog kev rov tsim kho tag nrho cov txheej txheem cov txheej txheem: siv quav ciab tsim, plhaub tsim ib ntus, dewax kinetics, preheat ramp tus nqi, thiab lub tshuab nqus tsev-pab tswj.
Peb qhov kev qhia tshwj xeeb cais qhov tseeb micro peev casting los ntawm scaled-down pa casting. Ua ntej, cov cuab yeej qauv yuav tsum khiav ntawm ± 1.5 µm repeatability - tsis yog ± 5 µm. Peb siv hardened P20 steel pwm nrog electro-polished kab noj hniav thiab kub-stabilized txhaj units. Thib ob, lub plhaub tshuab yuav tsum muaj tsib txheej tsim: ob lub tsho ntxuav nrog submicron zircon, ob txheej nruab nrab nrog fused silica, thiab ib lub tsho tiv thaiv zaum kawg nrog kev tswj cov khoom sib faib. Thib peb, nchuav qhov xav tau ntawm lub sijhawm ntsuas kub ntsuas hauv ± 3 ° C - thiab lub tshuab nqus tsev nyob ntawm 0.08-0.12 mbar thaum sau. Hla ib qho ntawm cov no, thiab koj yuav tau txais cov porosity pawg nyob ze ntawm cov phab ntsa nyias lossis cov rooj vag tsis tiav sau rau ntawm cov nta hauv qab 0.8 hli tuab.
Cov neeg siv khoom feem ntau nug: "Peb puas tuaj yeem ua CNC-tshuab qhov ntawd xwb?" Rau qee qhov geometry - yog. Tab sis xav txog AMS 5387 cobalt alloy plug nrog 0.6 hli phab ntsa, sab hauv helical cua txias channel, thiab peb concentric sealing av. Machining pov tseg 82% ntawm raw khoom. Cov cuab yeej lub neej poob rau 47 qhov chaw rau ib qho carbide ntxig. Thiab residual kev ntxhov siab los ntawm milling induces 12 µm hneev hauv kev kho cua sov zaum kawg. Micro peev casting pib ze-net zoo li. Peb mam li siv cov 5-axis milling hauv zos tsuas yog qhov twg GD&T hu rau nws-xws li lub ntsej muag sib khi lossis mounting flange. Qhov tshwm sim? 63% cov khoom siv qis dua, 4.2 × lub sijhawm voj voog sai dua, thiab tsis muaj kev pheej hmoo ntawm micro-tawg propagation los ntawm machining-induced subsurface puas.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. tsim nws cov peev txheej peev txheej peev txheej nyob ib puag ncig lub luag haujlwm tseem ceeb hauv lub luag haujlwm - tsis yog kev xav paub hauv lab. Txhua yam khoom xa tuaj nrog tag nrho traceability: cua sov tooj, siv quav ciab ntau, plhaub tsim cav, ncuav cov ntaub ntawv, thiab CMM daim ntawv qhia mapped rau ASME Y14.5 GD&T callouts. Peb ntsuas qhov ruaj khov ntawm peb lub voj voog thermal (-40 ° C txog + 250 ° C) ua ntej tso tawm. Kev ncaj ncees saum npoo yog txheeb xyuas los ntawm SEM hla ntu - tsis yog kev tshuaj xyuas qhov muag xwb. Thiab yog - peb sim txhua qhov ntau ntawm T800 alloy rau cobalt theem faib siv EDS daim ntawv qhia, vim tias qhov tsis sib xws ntawm gamma-beta piv ncaj qha cuam tshuam rau lub neej qaug zog hauv winch center shafts.
Micro peev casting ua haujlwm zoo tshaj plaws thaum ua ke nrog tsim kev qhuab qhia. Tsis txhob ntse sab hauv cov ces kaum - siv ≥0.3 hli radii. Khaws phab ntsa thickness ratios nyob rau hauv 3: 1. Qhia cov qauv tsuas yog qhov uas yuav tsum tau unmolding -0.25 ° yog txaus rau feem ntau zircon plhaub. Thiab tsis txhob cais nyias cov yam ntxwv: txuas lawv mus rau pawg nrog cov fillets lossis tav uas txhawb lub plhaub lub zog thaum dewax. Peb tshuaj xyuas txhua daim duab rau castability ua ntej hais. Lub hli tas los, peb tau tshaj tawm 0.45 hli undercut ntawm lub rooj zaum siab valve uas yuav tau tawg lub plhaub ceramic thaum lub sij hawm ua dej dewax. Kev tsim kho tshiab siv sijhawm ob teev. Txuag tus neeg siv khoom 11 hnub thiab $ 8,400 hauv cov cuab yeej scrapped.
Qhov no tsis yog hais txog kev txo qis cov txheej txheem qub. Nws yog hais txog kev tsim cov tshiab - txheej los ntawm txheej, micron los ntawm micron, ntau los ntawm ntau. Raws li oilfield twj xav tau siab dua, raws li hydraulic systems poob rau hauv mobile robotics, thiab raws li cobalt-nickel alloys thawb mus rau hauv 900 ° C lub hnab ntawv, micro peev casting hloov ntawm niche mus rau qhov tsim nyog. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. tsom qhov uas qhov tseeb ua tau raws li qhov tshwm sim: qhov chaw uas tsis yog haum - tab sis ua haujlwm, muaj sia nyob, thiab rov ua dua. micro peev casting pib me me. Nws xaus qhov kev ntseeg siab tsis yog-negotiable.
