Longitudinally Submerged Arc Welded (LSAW) steel kav yog qhov tseem ceeb hauv cov phiaj xwm tseem ceeb thoob ntiaj teb, tsim cov pob txha ntev ntawm -cov roj, roj, thiab cov kav dej xa mus, nrog rau cov khoom tsim hauv loj - kev tsim kho. Kev ncaj ncees ntawm cov kav dej no, tshwj xeeb tshaj yog lawv lub peev xwm los tiv thaiv kev ntxhov siab thiab ib puag ncig kev ntxhov siab ntau xyoo dhau los, hinges tseem ceeb ntawm qhov zoo ntawm lawv cov weld seam. Lub flawless weld tsis yog lub hom phiaj tsim khoom; nws yog ib qho tseem ceeb uas yuav tsum tau ua kom muaj kev nyab xeeb ntawm cov kav dej, tiv thaiv kev puas tsuaj loj, thiab txo qhov cuam tshuam rau ib puag ncig. Tsab ntawv xov xwm no qhia txog qhov tseem ceeb ntawm kev sib txuas zoo hauv LSAW steel kav thiab qhia txog qhov tsis zoo -Kev Ntsuas Kev Ntsuas (NDT) yog qhov tseem ceeb hauv kev lav qhov kev ntseeg siab no. Hebei Huayang Steel Pipe Co., Ltd., tus thawj coj hauv LSAW yeeb nkab tsim, muab qhov tseem ceeb tshaj plaws ntawm kev vuam zoo los ntawm lub xeev- ntawm -the-art NDT.
LSAW Txheej Txheem thiab Weld Seam Tsim
LSAW cov kav dej yog tsim los ntawm txias- ua cov hlau phaj rau hauv cov duab cylindrical thiab tom qab ntawd vuam cov seam ntev siv cov txheej txheem Submerged Arc Vuam (SAW). Cov txheej txheem SAW, tus cwj pwm los ntawm nws qhov tob tob thiab qhov tso nyiaj siab, tsim kom muaj kev sib txuas zoo. Txawm li cas los xij, txawm tias muaj cov txheej txheem vuam zoo heev, muaj peev xwm cuam tshuam tuaj yeem tshwm sim, ua rau kev soj ntsuam nruj heev.
Vim li cas Weld Seam Quality yog qhov tseem ceeb:
1.Pressure Containment: Weld seam yog qhov tseem ceeb ntawm kev ntxhov siab. Txhua qhov tsis xws luag tuaj yeem cuam tshuam rau cov yeeb nkab lub peev xwm kom muaj kev kub siab sab hauv, ua rau kom tawg lossis tawg.
2.Structural Integrity: Hauv kev siv cov qauv, cov vuam yuav tsum tau nqa cov khoom tseem ceeb. Cov teeb meem tuaj yeem txo cov load-cov kabmob muaj peev xwm thiab ua rau tsis ua haujlwm ntxov ntxov.
3.Fatigue Resistance: Cov kav dej yog raug rau kev thauj khoom cyclic (piv txwv li, kev hloov pauv siab). Lub siab - zoo weld tiv taus qaug zog tawg pib thiab nthuav tawm, ua kom lub neej ntev dua.
4.Corrosion Resistance: Weld defects tuaj yeem tsim crevices qhov twg cov neeg ua haujlwm corrosive tuaj yeem sib sau ua ke, ua kom muaj zog hauv zos thiab kev ntxhov siab corrosion tawg.
5.Kev pheej hmoo ntawm ib puag ncig thiab kev nyab xeeb: Cov kav dej tsis ua haujlwm vim qhov tsis xws li vuam tuaj yeem ua rau muaj kev puas tsuaj loj rau ib puag ncig, kev lag luam poob, thiab ua rau muaj kev nyab xeeb tseem ceeb.
Advanced Non-Kev Ntsuam Xyuas Kev Ua Phem (NDT) rau LSAW Weld Seams
Txhawm rau kom ntseeg tau tias qhov tsis zoo ntawm LSAW weld seams, ntau - txoj hauv kev rau NDT yog ua haujlwm. Cov txheej txheem no tso cai rau kev tshawb pom ntawm qhov tsis xws luag sab hauv thiab sab nraud yam tsis muaj kev puas tsuaj rau cov yeeb nkab, muab kev ntsuam xyuas dav dav ntawm weld kev ncaj ncees.
1. Kev Ntsuas Ultrasonic (UT)
Ultrasonic Testing yog ib qho tseem ceeb tshaj plaws NDT txoj kev rau LSAW kav. Nws suav nrog kev xa cov suab nrov ntau zaus - zaus rau hauv cov khoom siv yeeb nkab thiab tshuaj xyuas cov echoes kom pom qhov tsis sib xws. Advanced UT cov txheej txheem suav nrog:
•Automated Ultrasonic Testing (AUT): Siv ntau yam transducers thiab sophisticated software scan tag nrho weld seam sai thiab comprehensively, muab tiag - cov ntaub ntawv lub sij hawm thiab cov ncauj lus kom ntxaws daim ntawv qhia txog tej yam tsis xws luag.
•Phased Array Ultrasonic Testing (PAUT): Ua hauj lwm ib tug array ntawm ultrasonic ntsiab uas yuav tau pulsed ntawm nws tus kheej, tso cai rau dynamic beam steering thiab tsom. Qhov no muab kev kuaj pom zoo, qhov loj me, thiab tus cwj pwm, tshwj xeeb tshaj yog rau cov geometry nyuaj lossis nyuaj -kom- txheeb xyuas qhov tsis zoo.
2. Radiographic Testing (RT) / X-ray Inspection
Radiographic Testing siv X-rays lossis gamma rays los tsim cov duab ntawm cov hlua khi ntawm cov yeeb yaj kiab lossis cov khoom siv digital. Txoj kev no muaj txiaj ntsig zoo rau kev txheeb xyuas qhov tsis xws luag hauv ntim xws li porosity, slag inclusions, thiab tsis muaj kev nkag mus lossis fusion. Niaj hnub nimno digital radiography muab cov txiaj ntsig sai dua thiab tswj cov ntaub ntawv yooj yim dua.
3. Sib Nqus Particle Inspection (MPI) thiab Dye Penetrant Inspection (DPI)
Cov txheej txheem no feem ntau yog siv los kuaj xyuas qhov chaw thiab nyob ze - deg defects:
•MPI: Siv rau ferromagnetic cov ntaub ntawv, nws siv magnetic teb thiab zoo magnetic hais los qhia nto thiab me ntsis subsurface tawg.
•DPI: Siv rau cov khoom siv tsis yog-ferromagnetic los yog thaum MPI tsis ua tau, nws yuav tsum siv cov kua penetrant uas nkag mus rau saum npoo- rhuav tshem qhov tsis xws luag, ua rau lawv pom tom qab siv tus tsim tawm.
4. Kev tshuaj xyuas qhov muag (VT)
Thaum zoo li yooj yim, Kev Tshuaj Xyuas Kev Pom Zoo los ntawm cov neeg soj ntsuam tau lees paub yog thawj kab ntawm kev tiv thaiv. Nws txheeb xyuas qhov tsis zoo ntawm qhov chaw, qhov tsis zoo, thiab qhov tsis zoo tag nrho uas tuaj yeem qhia txog cov teeb meem hauv qab lossis cuam tshuam cov txheej txheej adhesion.
5. Kev Ntsuas Hydrostatic
Txawm hais tias tsis yog ib txoj hauv kev NDT nruj, Kev Ntsuas Hydrostatic yog qhov yuav tsum tau xeem zaum kawg rau LSAW kav. Cov yeeb nkab yog ntim nrog dej thiab pressurized mus rau ib theem siab dua nws qhov siab tshaj plaws tso cai rau kev khiav hauj lwm siab. Qhov kev ntsuam xyuas no txheeb xyuas cov yeeb nkab xau- nruj thiab nws lub peev xwm los tiv thaiv lub siab sab hauv, ua pov thawj zaum kawg ntawm kev ncaj ncees tag nrho, suav nrog cov vuam seam.
Huayang kev cog lus rau kev tsis sib haum xeeb Weld Quality
Ntawm Hebei Huayang Steel Pipe Co., Ltd., kom ntseeg tau qhov zoo tshaj plaws weld seam zoo nyob rau hauv peb LSAW steel kav yog lub hauv paus ntsiab lus. Peb cov chaw tsim khoom tau nruab nrog kev txiav -ntug SAW thev naus laus zis thiab kev sib koom ua ke, ntau- theem NDT system. Peb siv:
•100% Automated Ultrasonic Testing (AUT) ntawm tag nrho longitudinal weld seam.
•Real-lub sij hawm X-ray tshuaj ntsuam xyuas kom tsis tu ncua ntawm weld kev ncaj ncees.
•Magnetic Particle Inspection rau nto defect nrhiav pom.
•Hydrostatic kuaj rau txhua txhua yeeb nkab.
Peb qhov kev cog lus txuas ntxiv tshaj qhov ua raws li kev ua raws cai; peb mob siab rau kev ua tau zoo nyob rau hauv txhua qhov kev sib txuas, ua kom ntseeg tau tias peb cov kav dej LSAW muab kev nyab xeeb tsis sib xws, kev ntseeg tau, thiab kev ua haujlwm ntev rau lub ntiaj teb cov kav dej thiab cov qauv tsim.
Txheej txheem cej luam ntawm Advanced NDT Methods rau LSAW Weld Seams
|
NDT Method |
Txoj Cai |
Nthuav qhov tsis xws luag |
Qhov zoo |
Kev txwv |
|
Automated Ultrasonic Testing (AUT) |
Siab -ntau zaus suab tsis pom qhov tsis zoo sab hauv / sab nraud. |
Kev sib tsoo, laminations, tsis muaj fusion / nkag mus, suav nrog. |
Kev kub ceev, tiag- cov ntaub ntawv sijhawm, qhov loj me me, kev pabcuam dav dav. |
Yuav tsum muaj kev sib txuas nruab nrab, cov neeg ua haujlwm txawj, qhov xwm txheej tuaj yeem cuam tshuam cov txiaj ntsig. |
|
Phased Array UT (PAUT) |
Steerable/focusable ultrasonic kab teeb. |
Complex flaws, meej defect characterization. |
Txhim kho qhov tsis xws luag / qhov loj me, txhim kho kev tshuaj xyuas yooj. |
Ntau cov cuab yeej siv thiab kev cob qhia. |
|
Kev ntsuas hluav taws xob (RT) |
X-rays/gamma rays duab sab hauv. |
Porosity, slag inclusions, tsis muaj kev nkag / fusion. |
Muab cov ntaub ntawv pom qhov muag mus tas li, zoo rau qhov tsis xws luag volumetric. |
Kev txhawj xeeb txog kev nyab xeeb ntawm hluav taws xob, qeeb qeeb, tsis zoo tagnrho rau cov teeb meem tsis xws luag. |
|
Magnetic Particle Inspection (MPI) |
Magnetic teb qhia qhov chaw / ze rau - deg flaws. |
Deg tawg, laps, seams. |
Ceev ceev, tus nqi - zoo rau qhov tsis xws luag ntawm cov khoom ferromagnetic. |
Tsuas yog rau cov ntaub ntawv ferromagnetic, txwv qhov tob ntawm kev nkag. |
|
Kev Ntsuas Hydrostatic |
Kev ntsuam xyuas sab hauv siab. |
Leaks, tag nrho cov yam ntxwv tsis muaj zog. |
Txheeb xyuas cov dej xau-tightness thiab tag nrho cov siab ncaj ncees. |
Kev puas tsuaj yog cov yeeb nkab tsis ua haujlwm, tsis pom qhov tsis xws luag. |
Hauv kev xaus, qhov tseem ceeb tseem ceeb ntawm kev sib khi zoo hauv LSAW steel kav tsis tuaj yeem raug tshaj, vim nws cuam tshuam ncaj qha rau kev nyab xeeb, kev ua haujlwm, thiab kev ua haujlwm ntev ntawm cov khoom siv tseem ceeb. Los ntawm kev siv tswv yim ntawm cov txheej txheem tsis zoo tshaj -Kev Ntsuas Kev Ua Phem (NDT)- suav nrog Kev Ntsuas Kev Siv Hluav Taws Xob Ultrasonic, Kev Ntsuas Hluav Taws Xob, thiab Sib Nqus Particle Inspection- cov chaw tsim khoom xws li Hebei Huayang Steel Pipe Co., Ltd. xyuas kom txhua txhua LSAW yeeb nkab ua tau raws li cov qauv siab tshaj plaws. Qhov kev cog lus tsis txaus ntseeg no rau kev sib txuas zoo yog lub hauv paus ntawm cov kav dej txhim khu kev qha, tiv thaiv kev thauj mus los ntawm lub zog thiab txhawb nqa kev tsim kho kom muaj zog thoob ntiaj teb.
