Thaum cov kws ua haujlwm qhia txog qhov nyuaj, kev ntseeg siab ntawm cov hlau zoo rau cov tshuab hydraulic lossis kev pabcuam roj & roj, lawv tsis tshua pib nrog "poob npuas casting." Lawv pib nrog ib qho teeb meem: lub tsev nyob hauv lub valve uas tawm hauv qab 400 bar, lub twj tso kua mis piston lub tog raj kheej nrog micro-tawg tom qab thermal cycling, los yog lub winch center ncej cov menyuam ua tsis tiav ntxov nyob rau hauv abrasive offshore tej yam kev mob. Qhov ntawd yog thaum ploj ua npuas ncauj tsis yog ib qho kev xaiv xwb - tab sis tsuas yog kev daws teeb meem xwb. Thiab qhov ntawd yog qhov twg a poob ua npuas ncauj casting Hoobkas nrog sib sib zog nqus metallurgical kev qhuab qhia thiab kev tswj cov txheej txheem sib xyaw ua rau qhov sib txawv.
Poob ua npuas ncauj tsis yog "xuab zeb casting nrog ua npuas ncauj." Nws yog qhov tseeb rho tawm-ntxiv hybrid: CNC-machined EPS qauv yog coated, faus rau hauv unbonded silica xuab zeb, ces vaporized * nyob rau hauv situ * los ntawm molten hlau. Tsis muaj parting kab. Tsis muaj cores hloov. Tsis muaj cov kaum sab xis uas txwv geometry. Tab sis kev vam meej hinges ntawm peb qhov tsis sib tham - qauv kev ruaj ntseg thaum lub sij hawm txheej, meej metallostatic siab tswj thaum lub sij hawm nchuav, thiab real-time thermal xyuas kom tsis txhob shrink porosity nyob rau hauv tuab seem. Peb tau pom cov neeg siv khoom hloov pauv los ntawm kev nqis peev casting kom poob ua npuas ncauj rau AMS 5387 cobalt alloy twj tso kua mis - thiab txiav lub sij hawm txhuas los ntawm 37% thaum txhim kho lub suab sab hauv. Vim li cas? Vim tias lawv cov neeg muag khoom ua ntej tau kho cov npuas dej pov tseg. Peb cov khoom kho nws yog thawj qhov kev ua tau zoo hauv cov saw hlau.
Feem ntau poob ua npuas ncauj casting Hoobkas Cov neeg ua haujlwm tsom mus rau qhov ntim lossis qhov yooj yim - cov khoom siv hlau loj loj, cov hlua khi yooj yim, cov hlau tsis tshua muaj hlau. Ob peb kov T800 cobalt-raws li alloys los yog nyias-walled, high-aspect-ratio nozzles yuav tsum tau ± 0.15 hli dimensional repeatability hla 200 hli ntev. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb tshuab cov qauv ua npuas ncauj ntawm 5-axis CNC chaw - tsis yog vim nws yog flashy, tab sis vim hais tias ib tug 0.08 hli deviation nyob rau hauv tus qauv txhais ncaj qha mus rau ib tug 0.12 hli offset nyob rau hauv zaum kawg machined bore qhov chaw tom qab shakeout thiab kub kho. Peb qhov chaw ua haujlwm ISO-raws li kev ua haujlwm sib npaug: ib kab mob siab rau cobalt-nickel alloys (AMS 5387, L-605), lwm qhov zoo rau ferritic stainless hlau castings siv hauv cov kua qaub-kua twj tso kua mis. Txhua kab muaj nws tus kheej tswj cov av noo txheej lub rooj muag zaub, qauv ua ntej ci qhov cub, thiab lub tshuab nqus tsev pab cuam qhov chaw ua haujlwm ntsuas rau ± 2.5 kPa.
Nov yog dab tsi cais qhov kev ua tau zoo los ntawm kev muaj peev xwm theoretical:
- Cov khoom traceability pib ua ntej melting: Txhua T800 billet tuaj txog nrog cov khoom siv hluav taws xob uas muaj ntawv pov thawj tag nrho, qhov loj me, thiab cov ntaub ntawv tensile - tsis yog cov ntawv pov thawj zeb xwb. Peb rov ntsuam xyuas cov khoom xa tuaj rau Co, Cr, Ni, W, thiab C siv OES, tom qab ntawd muab cov cim tshwj xeeb batch ID txuas rau txhua qhov casting ntau.
- Tsis muaj "black box" ua tiav: Tom qab shakeout, txhua lub hlau los yog hlau casting undergoes stress-relief annealing ib ASTM A781, ua raws li kev soj ntsuam ultrasonic (ASTM E186) ntawm qhov tseem ceeb. Cobalt qhov chaw mus ncaj nraim rau kev daws teeb meem + nrawm nrawm - tsis muaj cua txias, tsis muaj qhov sib txawv.
- Machining tsis yog downstream - nws yog co-tsim: Thaum tus neeg siv khoom xa GD & T-hnyav daim duab rau lub siab valve lub cev, peb cov engineers tsis yog hais txog machining xwb. Lawv simulate solidification nyob rau hauv MAGMAsoft, chij riser qhov chaw uas cuam tshuam nrog qhov kawg datum nto, thiab tawm tswv yim kev hloov kho cov qauv uas tshem tawm theem nrab fixturing-txuag $18.40 ib feem ntawm nruab nrab ntim.
Qee qhov kev sib cav poob ua npuas ncauj tsis tuaj yeem phim peev casting qhov chaw tiav. Muaj tseeb - rau Ra 0.8 µm daim ntawv thov, nws yuav tsis. Tab sis rau qhov chaw ua haujlwm uas yuav hauv av lossis lapped lawm? Poob ua npuas ncauj xa superior microstructural uniformity nyob rau hauv hnyav seem. Peb ntsuas 12% qis hardness variation thoob plaws 65-mm-thick AMS 5387 lub tog raj kheej phab ntsa vaj huam sib luag piv rau qhov sib npaug peev castings - ncaj qha khi rau qeeb qeeb, ntau kev taw qhia solidification hauv cov xuab zeb xoob pwm. Qhov kev sib raug zoo no tseem ceeb thaum koj cov neeg siv khoom lub twj tso kua mis warranty hinges ntawm qaug zog lub neej ntawm 10⁷ cycles.
Yog tias koj ntsuas a poob ua npuas ncauj casting Hoobkas, nug peb lo lus nug ua ntej tshuaj xyuas cov lus hais: Lawv puas tuaj yeem siv tau cov qauv kev ruaj ntseg tom qab txheej thiab ziab? Puas yog lawv teev qhov kub thiab txias, lub tshuab nqus tsev, thiab lub taub hau metallostatic rau txhua qhov cua sov? Thiab - qhov tseem ceeb - lawv puas tuav cov ntaub ntawv tshawb xyuas zaum kawg rau txhua qhov kev ua haujlwm, tsis yog cov qauv ntau? Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., cov no tsis yog checkboxes. Lawv ua haujlwm txhua hnub. Peb tau xa tawm ntau dua 1,200 qhov tshwj xeeb cobalt thiab stainless hlau castings rau North American OEMs txij li xyoo 2021-tag nrho nrog CMM cov ntawv qhia tag nrho, cov ntaub ntawv kho cua sov, thiab cov khoom siv rov qab mus rau qhov chaw. Tsis yog vim nws yooj yim. Vim tias lub luag haujlwm tseem ceeb hauv qhov tsis muaj chaw rau kev xav.
Lub neej yav tom ntej ntawm precision casting tsis yog hais txog kev xaiv ntawm cov txheej txheem - nws yog hais txog kev sib piv txoj cai hybrid sib lawv liag mus rau qhov kev ua haujlwm. Poob ua npuas ncauj rau ze-net zoo li kev ncaj ncees. CNC rau kev ua haujlwm datum tswj. Kev kho cua sov rau microstructure fidelity. Ua tiav rau kev ua haujlwm interface. Qhov kev sib koom ua ke - tsim, ua tiav, thiab txheeb xyuas raws li ib qho system - yog qhov hloov pauv qhov kev qhia tshwj xeeb rau hauv thaj chaw pov thawj. Rau cov engineers nkees ntawm caum tus nqi seem, xa khoom qeeb, lossis tsis sib xws metallurgy, cov kauj ruam tom ntej tsis yog lwm RFQ. Nws yog ib qho kev tshuaj xyuas nrog tus khub uas kho cov npuas dej zoo li cov cuab yeej siv tau zoo, cobalt zoo li qhov paub sib txawv, thiab koj lub sijhawm raws li daim ntawv cog lus.
