Stainless hlau castings rau cov khoom siv hluav taws xob Hoobkas xav tau ntau dua li kev tiv thaiv corrosion-lawv yuav tsum muaj kev ruaj ntseg nyob rau hauv thermal cycling, microstructural kev ncaj ncees ntawm 400 ° C +, thiab xoom kam rau ua rau porosity nyob rau hauv high-pressure aav. Peb tau pom peb lub turbine valve vaj tsev tsis tau rov qab los ntawm cov chaw tsim hluav taws xob sab hnub tuaj Asia vim tias lub chaw tsim khoom hla kev kuaj ultrasonic ntawm lub rooj vag vuam cheeb tsam. Yog vim li cas thiaj li qhia txog stainless hlau castings rau lub Hoobkas khoom siv hluav taws xob txhais tau hais tias kev sib koom ua ke ntawm cov khoom siv tshawb fawb, kev tswj cov txheej txheem casting, thiab kev ua haujlwm tau zoo - tsis yog kos lub thawv qib zoo li "CF8M".
Vim li cas Investment Casting Beats Sand Casting for Critical Energy Cheebtsam
Tsis yog txhua qhov stainless hlau castings ua tau zoo sib npaug hauv kev kub ntxhov thermal. Hauv peb lub hlis dhau los ntawm 18 lub hlis ntawm lub twj tso kua mis tsim khoom rau cov neeg siv roj thiab roj av, cov peev txheej 316L tau pom 42% tsawg dua microcracks tom qab 5,000 lub voj voog siab piv rau qhov sib npaug ntawm cov xuab zeb pov tseg. Vim li cas? Kev nqis peev casting muab cov kev ua kom nruj dua (± 0.3 hli vs ± 1.2 hli), qhov zoo tshaj plaws ntawm qhov kawg (Ra 3.2 µm vs Ra 12.5 µm), thiab cov khoom zoo tshaj plaws - qhov tseem ceeb thaum koj ntu anchors lub taub hau boiler pub twj tso kua mis khiav ntawm 220 bar.
Xuab zeb casting tseem siv tau rau lub hauv paus loj, tsis tshua muaj kev ntxhov siab-xws li lub hauv paus twj tso kua mis lossis cov turbine txhawb nqa-qhov hnyav thiab tus nqi tswj hwm. Tab sis rau kev sib hloov cov rooj sib txoos, lub cev lub cev, lossis lub tshuab nqus tsev, kev nqis peev casting yog tsis sib tham. Peb tau lees paub txhua pawg nrog spectral tsom xam, tensile kuaj ib ASTM A743, thiab radiographic tshuaj xyuas rau ASME BPVC Tshooj V. Tsis muaj kev zam.
Kev xaiv cov khoom siv tsis yog hais txog cov lej qib
"316 stainless" qhia koj tsis muaj dab tsi txog kev ua haujlwm tiag tiag hauv ntiaj teb. Peb nug peb lo lus nug ua ntej hais: Dab tsi yog qhov max khiav hauj lwm kub? Puas muaj chloride-txawm tias ntawm 5 ppm? Puas yog cov khoom lag luam muaj kev qaug zog lossis tsuas yog cov khoom zoo li qub?
- Rau seawater-cooled condenser li qub: Peb qhia F44 (UNS S32750) super duplex-tsis yog 316-vim nws PREN> 40 resists pitting qhov twg chlorides concentrate hauv crevices.
- Rau geothermal brine twj: ASTM A995 Gr. 6A (CD4MCu) tuav H₂S + CO₂ zoo dua cov qib duplex txheej txheem vim tswj ferrite / austenite tshuav nyiaj li cas.
- Rau kev pabcuam nuclear: CF3M castings undergo tag nrho cov tshuaj annealing + quenching ib ASTM A351, ces intergranular corrosion kuaj ib ASTM A262 Xyaum E.
Peb tsis lees txais cov khoom siv raw ntau yam tsis muaj cov ntawv qhia txog kev sim ntsuas uas qhia cov kab-tshwj xeeb yog leej faj (<0.015%) thiab oxygen (<0.002%). Ib tus neeg siv khoom 12-hli lub sijhawm poob qis rov qab mus rau qhov siab sulfur ua rau kub kua muag thaum lub sijhawm ua haujlwm kawg. Zaj lus qhia ntawd tau hloov pauv peb cov txheej txheem kev tshuaj xyuas tom ntej—thiab lawv li.
Vertical Integration daws cov ntsiab lus mob ntau lawm
Feem ntau qhov ua tsis tiav tshwm sim tsis yog nyob rau hauv casting - tab sis ntawm kev sib tshuam ntawm casting thiab machining. Lub cev xuab zeb-cam khwb cia lub cev tuaj yeem dhau NDT, tab sis warp 0.15 hli thaum lub sij hawm CNC milling vim qhov seem seem. Peb tshem tawm qhov kev pheej hmoo los ntawm kev tswj tag nrho cov saw: casting → kev ntxhov siab-txhim kho cua sov → ntxhib machining → laus → tiav machining → CMM pov thawj.
Peb lub chaw ua haujlwm ISO-raws li cov txheej txheem no nyob rau hauv ib lub ru tsev. Peb ntsuas txhua qhov tseem ceeb nrog cov ntsuas cua ntsuas txhua hnub; txheeb xyuas concentricity ntawm valve qia bores siv optical sib piv; thiab daim ntawv qhia saum npoo hardness hla thaj chaw kho cua sov nrog Rockwell testers portable. Thaum ib tus neeg siv khoom nyob sab Europe xav tau 48 tus tswv tsev turbine zoo ib yam xa tawm hauv 11 lub lis piam, peb tau tsim cov qauv, nchuav, tshuab, thiab sim-tag nrho hauv tsev. Tsis muaj handoffs. Tsis muaj miscommunication. Tsis muaj daim ntawv teev sijhawm.
Qhov no tsis yooj yim - nws yog physics. Machining ib tug casting yam tsis paub nws li-cam khwb cia kev nyuaj siab faib yog zoo li tuning lub cav blindfolded.
Yam koj xav tau tiag tiag ua ntej tso koj thawj qhov kev txiav txim
Tsis txhob xa peb cov ntaub ntawv CAD thiab cia siab tias yuav muaj qhov tsocai. Nqa plaub yam no rau kev tshuaj xyuas engineering:
- Daim duab kos cim qhia txog GD&T callouts cuam tshuam rau kev ua haujlwm - tsis yog kev zoo nkauj xwb.
- Kev khiav hauj lwm ib puag ncig cov ntaub ntawv: max / min kub, kua chemistry (nrog pH, chloride, H₂S qib), thiab lub voj voog lub luag haujlwm (nruam txuas mus ntxiv).
- Kev xeem yuav tsum muaj: hydrotest siab, NDT txoj kev (RT/UT/PT), thiab kev lees txais (piv txwv li, "tsis muaj qhov taw qhia> 1.5 hli ntev").
- Traceability xav tau: Koj puas xav tau ntau ntau traceability rau cov xov tooj cua sov? Cov ntaub ntawv pov thawj rau EN 10204 3.1 lossis 3.2?
Peb yuav teb tsis pub dhau 48 teev nrog kev tawm tswv yim txog kev tsim khoom-nrog rau cov lus qhia xws li kev hloov pauv ntawm phab ntsa nyias kom tsis txhob shrinkage lossis ntxiv lub kaum sab xis kom txo cov pwm tso tawm. Qhov ntawd yog li cas stainless hlau castings rau lub zog khoom Hoobkas txav los ntawm kev qhia tshwj xeeb rau kev lag luam txhim khu kev qha.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. tsim qhov chaw uas muaj sia nyob - tsis yog raws li spec. Peb lub hom phiaj nyob qis qis: precision castings rau hydraulic systems, roj & roj khoom, thiab engineered twj tso kua mis sib dhos qhov twg tsis ua hauj lwm yog ib qho kev xaiv. Peb tsis caum ntim. Peb daws qhov loj me, metallurgical, thiab cov teeb meem ua haujlwm - pib nrog thawj lub ncuav.
