Thaum koj tab tom nrum cobalt alloy twj tso kua mis vaj tsev rau kev pabcuam hydraulic siab-los yog AMS 5387 nozzle uas yuav tsum muaj sia nyob 650 ° C thiab cyclic thermal stress-cov tub ntxhais ceramic tsis yog ib qho pwm pov tseg xwb. Nws yog tus kws tsim vaj tsev ntsiag to ntawm sab hauv geometry, tus lav ntawm phab ntsa tuab tswj, thawj kab ntawm kev tiv thaiv tawm tsam qhov ntev drift hauv peev casting. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb tau pom cov cores ceramics poob nruab nrab-ntws ntawm T800-raws li impeller shrouds - tsis yog vim tsis zoo binder burnout, tab sis vim hais tias cov coefficient ntawm thermal expansion (CTE) mismatch nrog lub plhaub tsis validated nyob rau hauv tag nrho 20.25C-1. Tias yog vim li cas "ceramic core rau peev casting Hoobkas" tsis yog cov khoom lag luam tshawb nrhiav rau peb. Nws yog ib qho kev qhia meej nrog cov txiaj ntsig tiag tiag hauv ntiaj teb.
Peb tsim ntau tshaj 12,000 ceramic cores ib xyoos ib zaug - txhua tus engineered rau ib tug tshwj xeeb alloy system, gating design, thiab post-cast machining hnab ntawv. Peb tus qauv cores siv fused silica-alumina sib xyaw nrog CTEs tuned rau ± 0.2 × 10⁻⁶ / ° C tiv thaiv CoCr alloys; Cov kev cai tsim muaj xws li zirconia-reinforced variants rau> 1200 ° C titanium aluminide sim. Tsis zoo li cov cores off-the-shelf cores muag los ntawm cov neeg muag khoom siv refractory, peb tau txais peb qhov kev lees paub tsis sib tham ua ntej tso tawm: XRD theem ruaj khov ntawm 1000 ° C, txias crushing zog ≥18 MPa tom qab dewaxing, thiab qhov seem rov ua dua los ntawm CT scanning - tsis yog calipers xwb. Peb tau ntsuas core-rau-core variation nyob rau hauv 0.015 hli ntawm 80 mm-ntev nyob rau hauv cov nqe lus, qhov tseem ceeb thaum kawg machining pub tsuas yog 0.15 hli ib sab.
Qee tus yuav sib cav tias cov xuab zeb-cam khwb cia lossis machined-in-place cores txo lub sij hawm txhuas. Tab sis nyob rau hauv peb kev paub nrog piston twj tso kua mis lub tog raj kheej vaj tse, cov kev xaiv no raug nqi ntau downstream. Xuab zeb cores tawm ntawm qhov chaw roughness saum Ra 12.5 µm - tsis tuaj yeem lees txais rau hydraulic sealing qhov yuav tsum tau Ra ≤1.6 µm tom qab ua tiav machining. Machined cores qhia microcracks los ntawm cov cuab yeej deflection, uas nthuav tawm thaum lub plhaub tua hluav taws thiab ua rau lub plhaub hauv zos nqa tawm. Peb tau taug qab 23% ntau dua cov khoom seem ntawm cov khoom xws li ceramic cores nrog optimized ntsuab zog thiab tswj sintering profiles. Qhov kev daws teeb meem tsis yog sai dua - nws yog qhov ntse dua: ua ntej validated core geometry, sib phim thermal cwj pwm, thiab traceable batch ntaub ntawv khi rau txhua casting ntau.
Yuav ua li cas cais ib tug txhim khu kev qha ceramic core tsum los ntawm tus neeg muag khoom muag? Plaub yam peb txheeb xyuas txhua hnub:
- Cov ntaub ntawv pov thawj: Txhua silica batch nqa ASTM C704 cov ntaub ntawv xeem - tsis yog cov lus tshaj tawm ntawm tus neeg muag khoom
- Txheej txheem daim ntawv qhia: Core drying ua raws li ISO 9001-tswj cov av noo ramps (tsis yog lub sijhawm teem sijhawm), tiv thaiv micro-cracking hauv 3.2 hli-thick vanes
- Dimensional accountability: Peb ntsuas txhua tus tub ntxhais nrog Zeiss CONTURA G2 RDS CMM, tsis yog qhov sib piv kho qhov muag-tseem ceeb rau GD&T-tswj cov yam ntxwv zoo li txoj haujlwm kam rau ua Ø0.05 hli
- Alloy-specific validation: Co-raws li cores raug kuaj hauv cov peev txheej hauv lub plhaub siv koj lub caij nyoog slurry viscosity thiab poob voj voog, tsis yog generic plaster pwm
Qhov kev tswj hwm no cia peb xa cov cores ceramic uas muaj tseeb los ntawm dewaxing, firing, thiab hlau ncuav-txawm rau cov geometries nyuaj xws li ntau qhov chaw nres nkoj valve lub cev nrog kev sib tshuam 2.5 mm-inch cua txias channel. Cov neeg muas zaub nyob rau hauv North America thiab Europe tsis tu ncua qhia 15-20% tsawg dua cov txheej xwm ntawm cov castings uas yuav tsum tau nruj nreem tolerances (± 0.08 hli). Tsis muaj khawv koob. Tsuas yog cov ntaub ntawv txheej txheem tsis, ntsuas ntsuas ntsuas, thiab kev sib txuas ntawm cov hlau ua rau hauv cov tub ntxhais-tsis ntxiv raws li kev xav tom qab.
Yog tias koj tab tom nrhiav a ceramic core rau peev casting Hoobkas daim ntawv thov qhov kev ua tau zoo hinges ntawm sab hauv contour fidelity - tsis yog "nws haum" - ces cov ntaub ntawv cov ntaub ntawv thiab lub sij hawm xa khoom muaj teeb meem tsawg dua thermal compatibility log thiab CMM soj ntsuam cov ntaub ntawv. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb kho txhua tus tub ntxhais ua haujlwm, tsis yog khoom siv. Peb qhia tag nrho cov ntaub ntawv xeem nrog cov neeg siv khoom ua ntej thawj tsab ntawv pom zoo. Peb kho cov binder ratios raws li koj lub plhaub permeability - tsis yog peb cov qauv qauv. Thiab peb khaws cov ntaub ntawv batch rau 10 xyoo, tsis yog ua raws li, tab sis yog li koj tuaj yeem taug qab qhov tsis txaus ntseeg rov qab mus rau qhov tseeb kiln khiav, raw ntau, thiab tus neeg teb xov tooj hloov.
Lub neej yav tom ntej ntawm precision casting tsis yog hais txog lub cub tawg loj dua lossis ceev CNCs. Nws yog hais txog kev tshem tawm qhov sib txawv ntawm lub hauv paus chiv keeb - pib nrog lub hauv paus. Raws li qhov kev thov loj hlob rau cov phab ntsa nyias nyias, nruj dua, thiab cov khoom kub siab dua li T800 thiab CMSX-4, ceramic cores yuav txav los ntawm kev siv thev naus laus zis mus rau lub rooj vag zoo. Qhov kev hloov pauv ntawd pib nrog nug tsis yog "Nws puas tuaj yeem ua tau?" tab sis "Yuav ua li cas yog nws tus cwj pwm tuaj yeem kwv yees-thiab ua pov thawj?" Peb tau tsim peb lub chaw, peb cov txheej txheem, thiab peb cov kev koom tes nyob ib ncig ntawm lo lus nug. Vim tias thaum koj lub luag haujlwm ua haujlwm ntawm 350 bar hauv lub tshuab nqus dej tawm sab nraud, tsis muaj chaw rau kev kwv yees hauv qhov chaw khoob.
