Thaum lub hydraulic valve tsis nyob rau hauv 350 bar siab, nws tsis tshua muaj tus tsim uas yog txhaum - nws yog tus Stellite valve pob thiab lub rooj zaum hnav tsis sib xws, micro-cracking, lossis poob metallurgical kev ncaj ncees tom qab tsuas yog 8,000 cycles. Peb tau pom nws nyob rau hauv ntug dej hiav txwv twj tso kua mis manifolds, mining piston li qub, thiab high-cycle chemical dosing systems: standard stainless steel seats erode fast. Cobalt-based Stellite alloys tsis ua. Tab sis tsis yog txhua tus Stellite valve pob thiab lub rooj zaum Hoobkas xa cov hardness zoo ib yam, carbide faib, los yog qhov seem rov ua dua nyob rau hauv cov khoom siv-tshwj xeeb tshaj yog thaum geometry suav nrog tapered sealing bands, eccentric bores, los yog dual-hardness interfaces.
Yog vim li cas Stellite tsis yog "Harder Steel" - Nws yog qhov kev xaiv System-Level
Stellite tsis yog ib qho khoom siv. Nws yog ib tsev neeg - 6, 12, 21, 25 - nrog cobalt raws li tus txha caj qaum (40-65%), chromium rau oxidation tsis kam, tungsten rau kub hardness, thiab carbon los tsim hnav-resistant M7C3 thiab M23C6 carbides. AMS 5387 (Stellite 6) hits 38-44 HRC as-cam tab sis yuav tsum tau kho cua sov kom tsis txhob nkig sigma theem tsim. T800 alloy ntxiv npib tsib xee rau thermal poob siab-tseem ceeb hauv chav-pab roj rov qab li qub. Txawm li cas los xij, hardness ib leeg ua rau yuam kev. Lub rooj zaum Stellite nrog tsis zoo carbide dispersion pob txha tawg nyob rau hauv kev cuam tshuam kev thauj khoom. Ib lub pob nrog residual casting porosity leaks ntawm 120 ° C. Tias yog vim li cas kev ua haujlwm tau zoo nyob ntawm peb lub peev xwm sib txuas: kev paub txog alloy, kev tswj cov txheej txheem, thiab kev qhuab qhia metrology - tsis yog cov khoom siv raw.
Dab tsi cais qhov ntseeg tau Stellite Valve Pob thiab lub rooj zaum Hoobkas los ntawm so
Peb tau tshawb xyuas ntau dua 30 tus neeg muag khoom thov cov kws tshaj lij Stellite. Feem ntau ua tsis tau ntawm ib qho ntawm peb lub ntsiab lus:
- Khoom siv traceability qhov khoob: Daim ntawv pov thawj "AMS 5387" tab sis tshem tawm cov ntaub ntawv qhia tshwj xeeb spectrographic, grain loj, los yog cov txiaj ntsig kev ntsuas kev sib xyaw ua ke.
- Machining-induced kev puas tsuaj: Kev sib tsoo hnyav yam tsis muaj cua txias ua rau 20-μm txheej dawb-micro-cracked, untempered, thiab nquag mus rau spalling nyob rau hauv cyclic load.
- Sealing geometry drift: CNC cov kev pab cuam xav tias zoo meej cam khwb cia blanks. Cov peev txheej tiag tiag muaj ± 0.3 hli phab ntsa thickness variation. Yog tias tsis muaj kev hloov kho cov cuab yeej them nyiaj, qhov kawg sealing band sib txawv> 0.05 hli los ntawm lub kaum sab xis - txaus los txiav lub neej ntawm 60%.
Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb kaw cov qhov khoob vertically. Peb lub chaw ISO-raws li kev tswj hwm tag nrho cov saw: lub tshuab nqus tsev-melted cobalt alloy ingots → precision peev casting → kev ntxhov siab-relieved ntxhib machining → carbide-stabilizing tshav kub kho → tsib-axis contour tiav → CMM-tsim pov thawj sealing band tshuaj xyuas. Txhua lub pob zeb Stellite muaj ib tus ID tshwj xeeb txuas rau nws cov cav yaj, cov ntawv qhia X-ray, thiab daim ntawv qhia qhov roughness. Tsis muaj batch tawm yam tsis tau txheeb xyuas Rockwell C hardness hla peb thaj chaw - thiab tsis muaj lub rooj zaum nkoj tsis muaj helium xau kuaj ntawm 1.5 × ua haujlwm siab.
Kev ua tau zoo hauv ntiaj teb: Qhov twg Precision ntsib daim ntawv thov
Ib tus neeg siv dej hiav txwv North tau hloov tus neeg sib tw Stellite 21 lub rooj zaum hauv cov av nkos reciprocating tom qab 4,200 teev ntawm kev pabcuam. Cavitation pitting tau ua txhaum lub subsurface txheej. Lawv tau hloov mus rau peb lub rooj zaum AMS 5387 - tib lub geometry, tib lub tsev - tab sis nrog nruj dua carbide qhov sib nrug ( ntsuas los ntawm SEM), cov ntsiab lus oxygen qis dua (<120 ppm), thiab tom qab ua tiav cov txheej txheem nitride diffusion. Qhov tshwm sim: 14,700 teev ua ntej kev saib xyuas. Tsis yog vim nws yog "nyuaj," tab sis vim hais tias lub microstructure tiv thaiv ob qho tib si abrasive slurry hais * thiab * ib ntus vapor vapor.
Lwm qhov xwm txheej: Cov tshuaj lom neeg Esxias sab hnub tuaj xav tau cov khoom tsis yog T800 rau lub diaphragm metering valve tuav 98% sulfuric acid ntawm 85 ° C. Standard Stellite 6 corroded ntawm qia interface. Peb rov tsim lub pob nrog lub diffusion-bonded T800 cap hla 17-4PH core-machined nyob rau hauv ib qho teeb tsa kom tshem tawm cov pob qij txha galvanic. Ib feem dhau 1,000-teev ASTM G28A immersion kuaj nrog xoom poob. Qhov no tsis yog los ntawm lub txee. Nws yog metallurgy-tsav geometry.
Xaiv Koj Lub Pob Valve Pob thiab Lub Rooj Zaum - Nug cov lus nug no
Ua ntej kos npe rau NDA, nug koj tus neeg muag khoom:
- Koj puas tuaj yeem muab cov ntaub ntawv qhia txog spectrographic tsis ntev los no rau AMS 5387-qhia qhov tseeb W, C, thiab Si qib piv rau spec txwv?
- Koj puas ntsuas carbide ntim feem (ntawm cov duab tsom) ntawm txhua qhov ntau - lossis tsuas yog hardness?
- Yuav ua li cas koj them nyiaj rau casting shrinkage nyob rau hauv koj qhov kev pab cuam CNC? Koj puas siv CT-scan cov ntaub ntawv los kho toolpaths?
- Dab tsi yog koj qhov siab tshaj plaws qhov chaw roughness (Ra) ntawm lub sealing band - thiab koj yuav ua li cas xyuas nws optically, tsis yog stylus?
- Koj puas tuaj yeem muab tag nrho traceability mus rau tus lej electrode siv hauv lub tshuab nqus tsev arc remelting?
Yog tias cov lus teb tsis meej, ncua sijhawm, lossis siv cov qauv siv dav dav es tsis txhob ntawm koj qhov tshwj xeeb kos duab GD&T callouts - taug kev deb. Stellite cov khoom tsis yog cov khoom lag luam. Lawv yog cov kev cuam tshuam tseem ceeb uas qhov kev ua yuam kev 0.01 mm raug nqi downtime, tsis yog nyiaj.
Rau cov engineers qhia txog kev ua haujlwm siab sealing nyob rau hauv ib puag ncig hnyav, lub Stellite valve pob thiab lub rooj zaum Hoobkas koj xaiv yuav tsum kho metallurgy, machining, thiab metrology li inseparable kev qhuab qhia - tsis yog raws li cov kauj ruam. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. tsim kom muaj kev sib koom ua ke rau hauv nws txoj haujlwm txhua hnub. Nws lub hom phiaj tseem nqaim: daws kev hnav, corrosion, thiab qaug zog tsis ua haujlwm hauv lub luag haujlwm tseem ceeb ntawm kev tswj cov kua dej-pib nrog qhov tshwm sim uas cov hlau sib ntsib hlau, lub voj voog tom qab lub voj voog, lub zog tom qab siab. Lub sijhawm tom ntej lub valve tsis ua haujlwm ntxov, saib yav dhau los cov tsos mob. Tshawb xyuas lub rooj zaum carbide faib. Qhov ntawd yog qhov uas muaj zog tiag tiag pib.
