Thaum cov kws tshaj lij qhia cov khoom siv hlau ua haujlwm siab rau hydraulic li qub, lub twj tso kua mis, lossis winch shafts - tshwj xeeb tshaj yog nyob rau hauv high-pressure, high-hnav, los yog corrosive tej yam kev mob - lawv tsis tsuas yog xav tau ib tug neeg muag khoom. Lawv xav tau ib mim hlau txhaj tshuaj molding txheej txheem Hoobkas uas nkag siab txog tus cwj pwm metallurgical, qhov ruaj khov ntawm qhov ntev, thiab kev ua haujlwm tsis ua haujlwm - tsis yog kev zam rau ntawm daim duab.
Peb tau pom ntau qhov haujlwm ntau dhau ntawm cov qauv qauv vim tias cov chaw tsim khoom xaiv tau kho MIM li "tsuas yog lwm txheej txheem molding." Hauv kev muaj tiag, kev vam meej MIM rau lub hom phiaj tseem ceeb ntawm cov khoom lag luam xav tau kev sib koom ua ke ntawm kev xaiv cov hmoov nplej, cov ntawv sib khi, kev sib tw kinetics, sintering profile tswj, thiab tom qab sinter machining. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb kho txhua qhov MIM zoo li lub rooj zaum cobalt-nickel alloy valve: ib qho yuam kev hauv kev tswj cov pa roj carbon thaum sintering tuaj yeem ua rau microcracking hauv qab 300-bar cyclic loading. Tias yog vim li cas peb lub chaw ISO-raws li hauv Qingdao tsis outsource debinding los yog sintering - peb muaj tag nrho cov thermal voj voog, los ntawm 650 ° C catalytic debind mus rau 1280 ° C nqus sintering nrog meej dew-point xyuas.
Cov neeg yuav khoom feem ntau saib tsis pom qhov tsis txaus ntseeg: MIM ua tau zoo ntawm cov duab zoo sib xws - tab sis tsuas yog nyob hauv thaj tsam geometric nruj. Phab ntsa thickness yuav tsum nyob nruab nrab ntawm 1.5 hli thiab 8 hli. Aspect ratios saum toj no 6: 1 txaus ntshai gradients. Undercuts? Muaj peev xwm - tab sis tsuas yog nrog collapsible ceramic cores, tsis yog cov cuab yeej txheem. Peb tau pab cov neeg siv khoom kho dua tshiab AMS 5387 cobalt alloy twj tso kua mis kom tshem tawm cov ntse sab hauv radii, txiav sintering distortion los ntawm 40% thaum tswj kev khiav-txoj kev ncaj ncees. Qhov ntawd tsis yog theoretical. Nws yog dab tsi tshwm sim thaum koj mim hlau txhaj tshuaj molding txheej txheem Hoobkas khiav 120+ MIM ntau ntau hauv ib xyoos ntawm aerospace-qib feedstocks-thiab sau txhua tus nqi qis, warpage vector, thiab qhov sib txawv ntawm qhov sib txawv ntawm ib pawg.
Nov yog dab tsi cais qhov tseeb MIM los ntawm cov khoom muag MIM:
- Cov ntaub ntawv traceability pib ua ntej hmoov nkag mus rau hauv lub hopper: Peb muab cov ntawv pov thawj roj-atomized CoCrMo thiab T800 alloy hmoov nrog tag nrho PMI cov ntaub ntawv-thiab xyuas cov ntsiab lus oxygen, particle loj faib (D50 = 8.2–9.6 µm), thiab pom meej ntom ntom batch-by-batch.
- Kev sib tham tsis yog sijhawm-nws tau saib xyuas: Hloov cov sij hawm ntub dej ruaj khov, peb taug qab qhov poob ntawm lub sijhawm tiag tiag ntawm gravimetric sensors. Ib qho 0.3% residual binder ua rau tsis siv neeg profile hloov kho-vim kev tshem tawm tsis tiav ua rau tsam plab; over-debinding caw cracking.
- Sintering profiles yog ib feem tshwj xeeb, tsis rau qhov cub tshwj xeeb: Lub piston twj tso kua mis lub tog raj kheej lub tog raj kheej tau txais kev qeeb qeeb los ntawm 800-1000 ° C tshaj qhov nyias-section nozzle. Peb kho lub sij hawm nyob rau hauv raws li thermal mass qauv - tsis yog ib daim ntawv qhia.
- Tom qab-sinter geometry yog tsis-negotiable: Txhua feem MIM tau txais CMM tshuaj xyuas tawm tsam GD&T callouts - tsis yog qhov loj me xwb. Peb ntsuas flatness ntawm sealing nto mus rau ± 1.2 µm, cylindricity ntawm ncej cov ntaub ntawv mus rau 0.8 µm, thiab nto roughness (Ra) ntawm cov kua txoj kev mus rau ≤0.4 µm — txheeb xyuas nrog optical profilometry.
Qee tus yuav sib cav tias CNC machining muab qhov raug zoo dua li MIM. Muaj tseeb - rau cov geometry yooj yim. Tab sis sim tuav ± 0.015 mm concentricity hla tsib coaxial bores nyob rau hauv ib tug tib 316L stainless hlau twj tso kua mis foundation, txhua tus nrog threads thiab cross-drilled lubrication ports. Machining uas ib feem yuav tsum tau rau kev teeb tsa, peb qhov kev hloov kho, thiab qhov tsis muaj thermal drift. MIM version? Ib qho ntsuab, ib qho sinter, ib qho kev ua tiav-tig-thiab 22% txo tus nqi tag nrho ntawm qhov ntim siab tshaj 500 pcs / xyoo. Peb ua pov thawj nws: peb lub hlis dhau los, peb tau xa 1,200 T800 alloy center ncej chais rau ib qho engineering tsheb winch system. Tag nrho dhau 100% kev ua haujlwm thauj khoom ntawm 18,500 N axial quab yuam-zero rework.
Qhov kev ntseeg tau los ntawm kev sib koom ua ke ntsug koj tuaj yeem txheeb xyuas tau. Peb lub tsev tsis yog tsuas yog MIM xovxwm thiab sinter furnaces - tab sis kuj precision CNC chaw muaj peev xwm ntawm hard-tig sintered CoCr qhov chaw ntawm 85 HRC, cua kub-kho qhov cub calibrated rau ± 2 ° C, thiab passivation kab raws li ASTM A967. Thaum tus neeg siv khoom xa daim duab rau AMS 5387 ntsaws nrog qhov muag tsis pom thiab lub ntsej muag sib khi, peb tsis nug "Koj puas tuaj yeem ua tau?" Peb nug: "Dab tsi yog qhov xwm txheej ntxhov siab tshaj plaws? Lub neej kev pabcuam kev cia siab yog dab tsi? Hom kev ua haujlwm twg ua rau koj tsaug zog?" Tom qab ntawd peb xaiv cov khoom noj khoom haus zoo tshaj plaws, simulate sintering distortion hauv Simufact Additive, tsim cov pwm nrog hardened H13 steel thiab conformal cua txias raws, thiab xauv hauv cov txheej txheem tsis ua ntej txhaj tshuaj thawj zaug.
Yog tias koj ntsuas a mim hlau txhaj tshuaj molding txheej txheem Hoobkas, hla daim ntawv qhia glossy. Nug rau: (1) sintering ntau cov ntaub ntawv uas qhia qhov sib txawv ntawm qhov sib txawv ntawm qhov kev tsim khoom, (2) CMM cov ntaub ntawv sib piv as-sintered vs. tiav geometry ntawm ib feem zoo tib yam rau koj li, thiab (3) cov ntaub ntawv pov thawj ntawm cov ntaub ntawv pov thawj rau koj cov qib alloy tiag tiag - tsis yog "ISO 13322-2 raws cov hmoov." Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., cov ntaub ntawv no tsis raug kaw rau hauv lub txee rau cov ntaub ntawv. Lawv txuas nrog txhua PO, hloov kho nyob rau lub sijhawm, thiab sib koom ua ntej kev pom zoo siv cuab yeej. Vim hais tias precision tsis yog department. Nws yog qhov kev teeb tsa default.
