Thaum engineers qhia 17-4 PH peev casting rau lub siab-siab li qub, twj tso kua mis vaj tse, lossis winch shafts, lawv tsis yog xaiv cov khoom siv xwb - lawv xaiv lub hnab ntawv ua haujlwm. Lub hnab ntawv ntawd xav tau kev tswj kom nruj, zoo ib yam martensitic microstructure, thiab xoom kev cuam tshuam ntawm corrosion tsis kam tom qab kev kho cua sov. Ob peb qhov chaw tsim khoom xa tuaj uas ntseeg tau. Feem ntau tsis ua tiav ntawm ib qho tseem ceeb: qhov kev hloov pauv ntawm cov qauv siv quav ciab mus rau qhov kawg ntawm qhov geometry hauv qab 1050 ° C solid-state transformation.
Yog vim li cas 17-4 PH Peev Casting Xav Tau Ntau tshaj li qhov Foundry xwb
Peb tau nrum ntau dua 2,300 qhov tshwj xeeb 17-4 PH qhov chaw txij li xyoo 2019 - valve rau North Sea subsea manifolds, lub tog raj kheej thaiv rau hydraulic twj tso kua mis ntsuas rau 420 bar, thiab nruab nrab ncej chais rau mining tsheb winches. Qhov peb kawm sai sai: kev vam meej yog nyob ntawm peb qhov tsis sib tham - tsis yog ob, tsis yog plaub.
Ua ntej, raw khoom traceability yuav tsum tau ntev tshaj li daim ntawv pov thawj zeb. Peb kuaj txhua qhov kub ntau rau delta ferrite cov ntsiab lus ua ntej nchuav. Vim li cas? Vim tias> 0.8% delta ferrite nyob rau hauv lub xeev as-cam khwb cia ua rau cov lus teb tsis sib xws thaum lub sij hawm H900 kev kho mob - thiab qhov ntawd ua rau lub neej qaug zog hauv cov khoom sib hloov.
Thib ob, lub plhaub pwm tua hluav taws profile yuav tsum phim cov hlau nplaum thermal expansion nkhaus. Ib tus qauv 1100 ° C tuav ua haujlwm rau 316-tab sis 17-4 PH yuav tsum tau ua haujlwm ramping (120 ° C / h txog 950 ° C, tom qab ntawd 60 ° C / h txog 1050 ° C) kom tsis txhob muaj microcracking thawj 2 hli ntawm qhov chaw casting. Peb pom qhov no ua ntej thaum tus neeg siv khoom "zoo tib yam" kos duab ua tsis tiav kev ntsuas ntsev-txhaj tshuaj tom qab kev ua haujlwm: lub hauv paus ua rau lub plhaub overfiring, tsis yog kev kho cua sov.
Thib peb, kev tshem tawm kev ntxhov siab tom qab tsis yog xaiv tau - nws yog qhov yuav tsum tau * ua ntej * kev ua haujlwm. Unrelieved residual stress nyob rau hauv 17-4 PH distorts thaum lub sij hawm CNC ua hauj lwm, tshwj xeeb tshaj yog nyob rau hauv nyias-phab ntsa vaj tse nrog GD&T callouts nruj dua ± 0.025 hli. Peb siv lub voj voog 620 ° C / 2hr cua txias tam sim ntawd tom qab shakeout. Hla nws ntxiv 12-18% seem hauv kev soj ntsuam zaum kawg.
Yuav Ua Li Cas Teeb Qhov Tseeb 17-4 PH Peev Casting Factory Sib nrug
Qee cov neeg muag khoom sau npe lawv tus kheej "tshwj xeeb" vim tias lawv muaj cov kab ceramic. Qhov tshwj xeeb tiag tiag qhia txog qhov twg lwm tus txiav cov ces kaum:
- Ua ntej ncuav metallurgical tshuaj xyuas: Peb hla kev txheeb xyuas cov neeg siv khoom tshwj xeeb H900 kev laus tsis tiv thaiv cov ntaub ntawv tensile tiag tiag los ntawm peb tsib lub tshav kub dhau los - tsis yog txoj kev nkhaus xwb.
- Nyob rau hauv-txoj kev CMM pov thawj ntawm peb theem: Tom qab machining ntxhib (kom ntes distortion), tom qab ua tiav machining (rau GD&T ua raws), thiab tom qab qhov kawg passivation (kom paub meej tias qhov chaw ncaj ncees).
- Tsis muaj "standard" kho cua sov cycles: Txhua qhov chaw tau txais lub sijhawm so dej raws li nws qhov tuab tshaj plaws - suav nrog Jominy hardenability cov ntaub ntawv, tsis yog cov kab kos.
Qhov kev qhuab qhia no tseem ceeb tshaj plaws rau cov khoom siv xws li piston twj tso kua mis lub tog raj kheej. Ib qho European OEM tau tshaj tawm txog 40% lub neej kev pabcuam ntev dua tom qab hloov los ntawm tus neeg sib tw 17-4 PH casting rau peb li - tsis yog vim muaj zog dua, tab sis vim tias peb cov kev ntxhov siab qis qis txo qis micro-crack pib nyob rau hauv cyclic loading.
Vertical Integration Advantage Koj tsis tuaj yeem Outsource
Kev nqis peev casting ib leeg tsis lav kev ua haujlwm. Lub fwj tiag tiag yog kev sib koom tes ntawm casting thiab machining. Peb tau pom ntau qhov xwm txheej uas qhov zoo tshaj plaws 17-4 PH valve lub cev tsis sib haum thaum tig vim tias tus kws kho tshuab siv lub tshuab ua kom txias tsis sib haum nrog cov hnub nyoog microstructure - lossis phem dua, hla qhov kawg cryogenic stabilization kauj ruam.
Peb lub tuam txhab ua haujlwm tag nrho cov saw hlau: lub plhaub tsim, lub tshuab nqus tsev pabcuam, kev tswj kom txias, kev daws teeb meem, H900 kev laus, CNC milling thiab tig, electropolishing, thiab helium leak test - tag nrho raws li ISO 9001: 2015 lub ru tsev. Tsis muaj lwm tus neeg kho cua sov. Tsis muaj lwm lub khw plating. Tsis muaj cov cuab yeej hloov pauv tsis tau.
Qhov kev tswj ntawd muab cov txiaj ntsig rov ua dua. Rau AMS 5387 cobalt alloy nozzles, peb ua tiav ± 0.015 hli phab ntsa thickness sib xws thoob plaws 120 hli ntev. Rau T800-raws li cov twj tso kua mis, peb tuav Ra ≤ 0.4 µm nto tiav ntawm txoj hauv kev ntws-tseem ceeb rau cavitation tsis kam.
Xaiv Koj 17-4 PH Peev Casting Factory: Peb Cov Lus Nug Uas Qhia Qhov Tseeb
Ua ntej kos npe rau NDA, nug cov no-tsis nyob rau hauv ib ntus, tab sis rov qab-rau-rov qab:
- "Qhia kuv txog peb qhov kawg ntawm 17-4 PH tshav kub kho cov cav rau qhov tuab dua 50 hli. Qhia txog cov nqi ramp, tuav lub sijhawm, thiab cov khoom siv cua txias."
- "Dab tsi yog koj qhov kev tso cai siab tshaj plaws ntawm intergranular corrosion tus nqi (raws li ASTM A262 Xyaum E) rau H900-kho 17-4 PH - thiab koj yuav ua li cas txheeb xyuas nws ib pawg?
- "Yog tias kuv daim duab hu rau ASME B16.34 Chav Kawm 900 qhov kev ntsuas siab, koj cov txheej txheem sau tseg yog dab tsi rau kev lees paub qhov tawg ntawm thawj tsab xov xwm?"
Yog tias cov lus teb suav nrog "peb ua raws li cov qauv kev lag luam" lossis "peb tus neeg muag khoom ua haujlwm li ntawd," tawm mus. Yog tias lawv rub tawm cov ntaub ntawv hauv lub sijhawm tiag tiag, qhia cov duab micrographs ntawm cov ciam teb, thiab siv lawv cov ntaub ntawv hydrotest hauv tsev-mus tham.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ua haujlwm rau siab 17-4 PH peev casting kab hauv Qingdao, optimized rau qhov xav tau ob qho tib si kev ncaj ncees thiab precision geometry. Lawv txoj hauv kev kho txhua qhov casting tsis yog cov hlau zoo li-tab sis raws li lub tshuab thauj khoom tos ua haujlwm. Qhov kev xav ntawd cais lub Hoobkas los ntawm tus khub. Thaum koj daim ntawv thov khiav ntawm 420 bar, tig ntawm 3,000 RPM, lossis zaum hauv dej rau 25 xyoo, qhov sib txawv tsis nyob hauv daim ntawv spec. Nws nyob hauv thawj lub voj voog kub, qhov thib plaub CMM kuaj, thiab qhov kawg helium xeem - txhua zaus.
