Longitudinally Submerged Arc Welded (LSAW) steel kav yog cov khoom tseem ceeb hauv high - cov haujlwm tsim kho vaj tse, suav nrog cov roj thiab cov kav dej, cov txheej txheem piling, thiab marine engineering. Muab qhov tshwm sim loj heev ntawm cov yeeb nkab tsis ua haujlwm hauv cov ntawv thov no, ua kom muaj kev ncaj ncees thiab kev ntseeg siab ntawm txhua LSAW yeeb nkab yog qhov tseem ceeb. Qhov kev lees paub no feem ntau yog los ntawm cov txheej txheem dav dav ntawm Non-Kev Ntsuam Xyuas Kev Puas Tsuaj (NDT) txoj hauv kev. Tab sis dab tsi yog qhov tseem ceeb tsis yog -Kev Ntsuas Kev Ntsuas (NDT) txoj hauv kev rau LSAW kav dej, thiab lawv yuav ua li cas thiaj li pab tau kom muaj txiaj ntsig zoo tshaj plaws thiab cov qauv kev nyab xeeb? Hebei Huayang Steel Pipe Co., Ltd., lub chaw tsim khoom tshwj xeeb ntawm LSAW kav, qhia txog cov txheej txheem NDT tseem ceeb ua haujlwm kom xa cov khoom tsis zoo.
Lub luag haujlwm tseem ceeb ntawm NDT hauvLSAW TubeKev tsim khoom
Tsis yog -Kev Ntsuam Xyuas Kev Puas Tsuaj (NDT) yog hais txog ib pab pawg ntawm cov txheej txheem kev tshuaj xyuas siv los ntsuas cov khoom ntawm cov khoom, cov khoom siv, lossis cov kab ke yam tsis muaj kev puas tsuaj. Rau cov kav dej LSAW, NDT tsis yog ib qho kev tswj xyuas zoo xwb; Nws yog ib feem tseem ceeb ntawm cov txheej txheem tsim khoom, xyuas kom meej tias:
• Weld Seam Integrity: Qhov tseem ceeb longitudinal weld tsis muaj qhov tsis xws luag sab hauv thiab saum npoo.
• Yeeb Nkab Lub Cev Muaj Zog: Cov khoom siv hauv paus ntawm cov yeeb nkab tsis muaj laminations, suav nrog, lossis lwm yam tsis sib xws.
•Dimensional Accuracy: Qhov ntev tseem ceeb yog nyob rau hauv qhov kev cia siab.
• Ua raws li Cov Qauv: Cov yeeb nkab ua tau raws li cov qauv thoob ntiaj teb nruj xws li API 5L, ASTM, thiab EN.
• Kev nyab xeeb thiab kev ntseeg tau: Cov khoom tiav tiav muaj kev nyab xeeb rau nws qhov kev npaj siab -siab thiab xav tau daim ntawv thov.
Qhov tseem ceeb NDT Methods rauLSAW Steel Pipes
Hebei Huayang ntiav ntau -fim txoj hauv kev rau NDT, siv ntau yam txuj ci siab heev los xyuas kom meej kev tshuaj xyuas:
1. Kev Ntsuas Ultrasonic (UT)
Lub hauv paus ntsiab lus: UT siv siab -ntau zaus suab nthwv dej txhawm rau txheeb xyuas qhov tsis zoo lossis txhawm rau txheeb xyuas cov khoom siv. Lub transducer generates ultrasonic tsis mus los ntawm cov khoom; thaum lawv ntsib qhov tsis sib xws (xws li tawg lossis tsis muaj dab tsi), ib feem ntawm lub suab lub zog tau rov qab mus rau lub transducer.
Application in LSAW:
• Weld Seam Kev Tshuaj Xyuas: 100% tsis siv neeg kuaj ultrasonic yog ua tiav ntawm tag nrho longitudinal weld seam kom paub txog qhov tsis zoo xws li tawg, tsis muaj fusion, porosity, thiab slag inclusions. Qhov no feem ntau ua ua ntej thiab tom qab kuaj hydrostatic.
•Plate Edge Inspection: Ua ntej tsim, cov npoo ntawm cov hlau phaj yog kuaj ultrasonically kom paub tseeb tias lawv tsis muaj laminations lossis lwm yam tsis xws luag uas tuaj yeem cuam tshuam qhov zoo ntawm vuam.
• Kev Tshuaj Xyuas Cov Yeeb Nkab Lub Cev: UT kuj tuaj yeem siv los tshuaj xyuas cov yeeb nkab lub cev rau laminations lossis lwm yam khoom tsis xws luag.
Qhov zoo: Muaj kev nkag siab zoo rau cov teeb meem sab hauv, cov txiaj ntsig tiag - lub sijhawm, zoo rau kev kuaj pom qhov tsis zoo.
2. Radiographic Testing (RT) / X-ray Inspection
Lub hauv paus ntsiab lus: RT siv X-rays lossis gamma rays kom nkag mus rau cov khoom. Lub tshuab ntes (zaj duab xis lossis digital sensor) nyob rau sab nraud sau cov kev hloov pauv hauv cov hluav taws xob siv hluav taws xob los ntawm qhov sib txawv ntawm cov khoom tuab lossis qhov ntom ntom, nthuav tawm cov teeb meem sab hauv.
Application in LSAW:
• Weld Seam Verification: RT feem ntau yog siv los txheeb xyuas qhov kev ncaj ncees ntawm qhov ntev weld seam, kuaj xyuas qhov tsis xws luag xws li porosity, slag inclusions, tsis muaj kev nkag mus, thiab tawg. Nws muab cov ntaub ntawv ruaj khov ntawm cov khoom siv vuam zoo.
Qhov zoo: Muab qhov muag pom, cov ntaub ntawv ruaj khov ntawm cov teeb meem sab hauv, ua haujlwm zoo rau qhov tsis zoo ntawm volumetric.
3. Magnetic Particle Inspection (MPI)
Lub hauv paus ntsiab lus: MPI yog siv los txheeb xyuas qhov chaw thiab ze ntawm - deg discontinuities nyob rau hauv cov ntaub ntawv ferromagnetic. Cov yeeb nkab yog magnetized, thiab cov khoom sib nqus (cov hmoov qhuav lossis ntub dej) raug siv rau saum npoo. Qhov tsis xws luag ua rau sib nqus flux to, nyiam cov khoom thiab ua rau pom qhov tsis sib xws.
Application in LSAW:
•Surface Weld Inspection: Siv los txheeb xyuas cov kab nrib pleb, sib tshooj, lossis lwm cov kab qhia nyob rau sab nraud thiab sab hauv ntawm cov vuam seam thiab cov cua sov uas nyob ib sab- thaj chaw cuam tshuam (HAZ).
Qhov zoo: Cov rhiab heev rau saum npoo - tawg qhov tsis zoo, kuj ceev thiab pheej yig.
4. Kev tshuaj xyuas qhov muag (VT)
Lub hauv paus ntsiab lus: VT yog qhov tseem ceeb tshaj plaws tseem ceeb tshaj plaws NDT txoj hauv kev, suav nrog kev kuaj pom ntawm cov yeeb nkab saum npoo thiab vuam seam los ntawm cov kws ntsuam xyuas thiab cov ntawv pov thawj.
Application in LSAW:
• Tag Nrho Qhov Zoo: Cov neeg soj ntsuam xyuas qhov tsis zoo ntawm qhov chaw, cov hniav, cov hniav, laminations, thiab daim ntawv thov txheej txheej.
• Weld Bead Profile: Kev ntsuam xyuas ntawm cov hlaws weld kom tsis tu ncua, kev txhim kho kom zoo, thiab tsis muaj qhov tsis xws luag sab nraud xws li undercut, sib tshooj, lossis ntau dhau spatter.
• Kev Npaj Kawg: Kev txheeb xyuas ntawm lub kaum sab xis, lub ntsej muag hauv paus, thiab tag nrho qhov kawg squareness.
Qhov zoo: Tus nqi- zoo, tuaj yeem tshawb pom ntau yam ntawm qhov tsis xws luag, muab kev tawm tswv yim tam sim.
5. Kev Ntsuas Hydrostatic
Lub hauv paus ntsiab lus: Thaum technically ib qho kev ntsuas siab es tsis yog ib txoj kev NDT ntshiab, kev sim hydrostatic yog qhov yuav tsum tau ua thiab tseem ceeb kawg qhov kev tshuaj ntsuam xyuas. Cov yeeb nkab tau ntim nrog dej thiab ua kom siab mus rau qib uas tau teev tseg (feem ntau 90-100% ntawm Kev Qhia Tawm Tsawg Tshaj Tawm, SMYS) thiab tuav rau lub sijhawm teem sijhawm.
Application in LSAW:
•Pressure Containment: Paub meej tias cov yeeb nkab muaj peev xwm tiv taus lub siab sab hauv yam tsis muaj dej los yog tawg.
•Txhua Kev Ncaj Ncees: Txheeb xyuas qhov kev ncaj ncees ntawm tag nrho cov yeeb nkab, suav nrog cov vuam seam thiab cov yeeb nkab lub cev, nyob rau hauv kev ntxhov siab.
Qhov zoo: Ib qho tag nrho - nplai, kev ntsuas ncaj qha ntawm kev siab ncaj ncees, kuaj pom los ntawm - phab ntsa xau.
Hebei Huayang: Kev cog lus kom tsis muaj kev cuam tshuam zoo
Ntawm Hebei Huayang Steel Pipe Co., Ltd., peb txoj kev cog lus rau kev ua tau zoo yog kos rau hauv txhua theem ntawm peb cov txheej txheem LSAW yeeb nkab. Peb muab cov txheej txheem NDT tseem ceeb no nrog peb cov JCOE cov kab ntau lawm thiab kev tswj hwm nruj nruj (tso ntawv pov thawj rau ISO 9001, API Q1) los xyuas kom meej tias txhua cov yeeb nkab ua tau raws li lossis dhau cov qauv thoob ntiaj teb xws li API 5L (PSL1 thiab PSL2).
Peb cov kws tshaj lij NDT uas tau txais kev cob qhia zoo thiab lub xeev - ntawm -- cov khoom siv kos duab muab kev tshuaj ntsuam xyuas dav dav, lav tias peb cov kav dej LSAW tsis muaj qhov cuam tshuam loj thiab muaj kev ntseeg siab rau cov ntawv thov uas xav tau tshaj plaws. Thaum koj xaiv Hebei Huayang, koj xaiv cov kav dej uas tau ua tiav qhov kev tshuaj xyuas nruj tshaj plaws, ua kom muaj kev thaj yeeb nyab xeeb rau koj cov haujlwm.
Qhov tseem ceeb NDT Txoj Kev rau LSAW Steel Pipes
|
NDT Method |
Txoj Cai |
Key Application in LSAW |
Ntes (Piv txwv) |
Qhov zoo |
|
Kev kuaj ultrasonic (UT) |
Siab - zaus suab nthwv dej pom qhov cuam tshuam los ntawm qhov tsis zoo. |
100% kev soj ntsuam ntawm weld seam thiab phaj npoo. |
Kev sib tsoo, tsis muaj fusion, porosity, slag, laminations. |
Siab rhiab heev, tiag -lub sij hawm, zoo rau planar flaws. |
|
Kev ntsuas hluav taws xob (RT) |
X-rays/gamma rays nkag mus rau cov khoom, kaw rau hauv zaj duab xis/sensor. |
Kev txheeb xyuas ntawm weld seam kev ncaj ncees. |
Porosity, slag inclusions, tsis muaj kev nkag mus, sab hauv tawg. |
Cov ntaub ntawv ruaj khov, siv tau rau qhov tsis zoo ntawm volumetric. |
|
Magnetic Particle Inspection (MPI) |
Magnetic flux leakage nthuav tawm qhov chaw / ze rau - deg flaws. |
Kev tshuaj xyuas qhov chaw ntawm weld seam thiab HAZ. |
Nto kab nrib pleb, overlaps, linear indications. |
High rhiab heev rau nto flaws, ceev, nqi -zoo. |
|
Visual Inspection (VT) |
Kev soj ntsuam ncaj qha los ntawm cov kws tshuaj ntsuam xyuas. |
Zuag qhia tag nrho nto zoo, weld hlaws profile, kawg npaj. |
Dents, gouges, nto imperfections, weld defects. |
Tus nqi -zoo, tawm tswv yim tam sim ntawd, ntau qhov pom qhov tsis xws luag. |
|
Kev Ntsuas Hydrostatic |
Cov yeeb nkab pressurized nrog dej. |
Kev lees paub zaum kawg ntawm kev ntim siab thiab xau- nruj. |
Los ntawm - phab ntsa ntub dej, tag nrho cov qauv kev ncaj ncees nyob rau hauv siab. |
Kev ntsuam xyuas ncaj qha ntawm kev ua tau zoo, yuav tsum tau ua rau cov kav dej. |
Nyob rau hauv xaus, cov array ntawm qhov tseem ceeb Tsis yog -Kev kuaj kev puas tsuaj siv rau LSAW steel kav yog ib qho pov thawj rau kev lag luam kev cog lus rau kev nyab xeeb thiab zoo. Los ntawm kev tshuaj xyuas ultrasonic thiab radiographic mus rau qhov sib nqus particle thiab kev kuaj pom, txhua txoj kev ua lub luag haujlwm tseem ceeb hauv kev ua kom ntseeg tau tias cov kav dej LSAW ua tau raws li cov qauv siab tshaj plaws ntawm kev ncaj ncees thiab kev ntseeg siab. Hebei Huayang Steel Pipe Co., Ltd. txaus siab rau nws tus kheej ntawm nws cov txheej txheem NDT, xa cov kav dej LSAW uas tsis yog tsim, tab sis ua tib zoo xyuas rau koj cov haujlwm tseem ceeb tshaj plaws. Koom tes nrog peb rau qhov zoo koj tuaj yeem ntseeg tau.
