Kev tshuaj xyuas flange zoo suav nrog kev kuaj pom, ntsuas qhov ntsuas, ntsuas qhov tsis zoo, thiab cov ntaub ntawv pov thawj yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb, code- ua raws flange kev ua tau zoo. Flange tsis ua haujlwm tuaj yeem ua rau xau, hluav taws kub, ib puag ncig kev puas tsuaj, thiab kev raug mob ntawm tus kheej. Cov lus qhia no suav nrog ntau yam kev tshuaj xyuas thiab kev ntsuas zoo rau flanges.
Vim li cas Kev Tshawb Fawb Tseem Ceeb
Flange tsis ua haujlwm hauv kev pabcuam tuaj yeem ua rau muaj kev puas tsuaj loj, suav nrog cov txheej txheem dej xau, hluav taws kub, tawg, ib puag ncig sib kis, thiab cov neeg ua haujlwm raug mob. Kev tshuaj xyuas xyuas tias flanges ua raws li cov khoom siv, qhov loj me, thiab cov cai ua ntej lawv muab tso rau hauv kev pabcuam. Kev ruaj ntseg zoo los ntawm kev tshuaj xyuas tiv thaiv kev ua haujlwm tsis zoo thiab tsis npaj rau lub sijhawm poob. Kev tshuaj xyuas kom zoo kom ntseeg tau tias lub flange yuav ua raws li tsim raws li nws cov kev ua haujlwm tau teev tseg. Rau cov ntawv thov kev pabcuam tseem ceeb, kev tshuaj xyuas tsis yog xaiv tau tab sis raug yuam los ntawm txoj cai tsim kho thiab tus tswv txoj kev xav tau zoo.
Kev tshuaj xyuas qhov muag
Kev kuaj pom pom yog thawj zaug thiab tseem ceeb tshaj qhov kev kuaj xyuas zoo. Tus kws tshuaj ntsuam xyuas cov flange rau qhov tsis xws luag xws li tawg, laps, seams, thiab nto porosity. Flange markings raug txheeb xyuas raws li ASME B16.5 qhov yuav tsum tau ua, suav nrog cov chaw tsim khoom lub npe lossis lub logo, cov khoom siv, cov chav kawm siab, thiab cov xov tooj cua sov. Lub ntsej muag lub ntsej muag raug tshuaj xyuas rau khawb, dents, corrosion, lossis shipping puas uas yuav cuam tshuam rau kev sib khi. Bolt qhov kev sib raug zoo thiab qhov ntau tau lees paub tawm tsam tus qauv. Xwb, nplai, thiab kab mob raug kuaj xyuas ntawm txhua qhov chaw sib khi.
Dimensional soj ntsuam
Dimensional soj ntsuam xyuas tias lub flange ua tau raws li cov kev tolerances teev nyob rau hauv cov qauv siv. Kev ntsuas tseem ceeb suav nrog flange sab nraud txoj kab uas hla, zuag qhia tag nrho thickness, thiab bore txoj kab uas hla. Lub bolt lub voj voog txoj kab uas hla thiab qhov ntau thiab tsawg ntawm lub qhov taub yuav tsum phim cov qauv qhov ntev rau cov chav kawm thiab qhov loj me. hub qhov ntev ntawm lub caj dab weld thiab txo flanges raug kuaj xyuas kom zoo taper thiab ntev. Nce lub ntsej muag qhov siab, txoj kab uas hla, thiab nto tiav yog ntsuas. Rau RTJ flanges, qhov zawj qhov ntev raug txheeb xyuas siv cov ntsuas tshwj xeeb. Txhua qhov ntev yuav tsum ua tau raws li ASME B16.5 kam rau ua.
| Hom tshuaj ntsuam xyuas | Dab tsi Nws Pom | Muaj feem rau | Txuj |
|---|---|---|---|
| Visual (VT) | Deg tsis xws luag, cim, puas | Tag nrho cov flanges | ASME B16.5 |
| Dimensional | Loj, thickness, bolt qhov sib dhos | Tag nrho cov flanges | ASME B16.5 |
| Ultrasonic (UT) | Internal laminations, porosity | Forged thiab phaj flanges | ASTM A388 Cov khoom lag luam |
| Sib nqus Particle (MT) | Nto thiab ze ntawm - nto tawg | Cov ntaub ntawv ferromagnetic | ASTM E709 Cov khoom lag luam |
| Kua Penetrant (PT) | Nto tawg | Tsis yog- cov khoom sib nqus | ASTM E165 |
| Kev ntsuas hluav taws xob (RT) | Internal voids, suav nrog | Cam khwb cia thiab welded flanges | ASTM E 94 |
| PMI | Cov ntaub ntawv chemistry pov thawj | Tag nrho cov alloys | ASTM E 1476 Cov Lus Qhia |
| Hydrostatic Test | Lub zog, xau ntawm 1.5x tsim | Sib dhos ua ke | ASME B31.3 |
Tsis yog -Txoj kev kuaj kev puas tsuaj
Ob peb txoj hauv kev NDT muaj rau kev tshuaj xyuas flange, txhua tus muaj peev xwm tshwj xeeb.Kev kuaj ultrasonic (UT)siv siab - zaus suab nthwv dej kom pom cov laminations sab hauv, porosity, thiab suav nrog hauv forged thiab phaj flanges.Sib Nqus Particle Test (MT)kuaj pom saum npoo thiab ze ntawm - cov kab nrib pleb hauv cov ntaub ntawv ferromagnetic siv cov hlau nplaum thiab cov hlau.Liquid Penetrant Testing (PT)siv cov xim uas pom los yog fluorescent kom pom cov kab nrib pleb ntawm cov khoom tsis yog- cov khoom sib nqus xws li austenitic stainless hlau.Kev ntsuas hluav taws xob (RT)siv X-rays lossis gamma rays los xyuas cov voids thiab inclusions, feem ntau yog siv rau castings thiab welded fabrications.Positive Material Identification (PMI)siv X-ray fluorescence lossis optical emission spectroscopy los txheeb xyuas cov khoom siv chemistry sib phim cov ntsiab lus.
Kev Ntsuas Siab
Kev ntsuam xyuas hydrostatic siab yog tus qauv txheej txheem rau kev txheeb xyuas flange kev sib koom ua ke. Kev ntsuas siab feem ntau yog 1.5 npaug ntawm qhov tsim siab, tuav rau lub sijhawm txaus los xyuas kom tsis muaj qhov poob siab. Rau cov tshuab uas tsis tuaj yeem zam dej, kev sim pneumatic nrog huab cua lossis roj inert tej zaum yuav raug siv nrog kev ceev faj ntxiv. Kev ntsuas siab yog tswj xyuas thaum sib koom ua ke yog tshuaj xyuas rau cov dej ntws. Rau qis- kub lossis cryogenic systems, qhov ntsuas hydrostatic tuaj yeem ua rau ntawm qhov kub thiab txias nrog qhov ntsuas siab hloov kho rau cov khoom siv qis dua ntawm qhov ntsuas siab.
Cov ntaub ntawv pov thawj
Mill Test Reports (MTRs) muab cov ntaub ntawv pov thawj ntawm cov khoom flange cov tshuaj muaj pes tsawg leeg thiab cov khoom siv tshuab. Tag nrho traceability los ntawm steel zeb mus rau qhov tiav flange yog tswj los ntawm cov xov tooj cua kub stamped ntawm txhua flange. Cov ntawv ceeb toom cuam tshuam yog xav tau rau cov khoom siv kub tsawg -. Cov ntawv ceeb toom hardness yuav tsum tau nyob qhov twg NACE MR0175 qaub cov kev pabcuam tshwj xeeb siv. Rau cov ntawv thov tseem ceeb, thib peb- cov koom haum soj ntsuam ntawm tog muab kev pov thawj ywj pheej ntawm cov khoom siv thiab flange zoo.
Marking thiab Traceability
ASME B16.5 xav kom txhua lub flange yuav tsum tau cim tas mus li nrog cov chaw tsim khoom lub npe lossis lub logo, kev tsim khoom, thiab chav kawm siab. Cov cim ntxiv muaj xws li cov xov tooj cua sov, qhov loj me, thiab cov qauv kuaj tshwj xeeb xws li "QT" rau quenched thiab tempered. Kev kos npe yog siv los ntawm tsawg- txoj kev ntxhov siab stamping kom tsis txhob tsim kev ntxhov siab uas tuaj yeem pib tawg. Traceability cov ntaub ntawv khaws cia rau tag nrho cov saw hlau tsim, los ntawm thawj cov hlau yaj los ntawm forging, kev kho cua sov, machining, thiab kev soj ntsuam zaum kawg.
Xav tau Flange Inspection thiab Certification?
Hu rau peb pab neeg ua haujlwm engineering kom ua tau zoo -pab flanges nrog tag nrho cov ntaub ntawv traceability thiab ntawv pov thawj.
Flange khoom
