API 5L L360 yeeb nkab ua haujlwm li cas?

Kev xaiv raw khoom:
Thawj kauj ruam hauv kev tsim cov kav dej API 5L L360 yog xaiv cov khoom siv zoo. Cov khoom siv tseem ceeb yog cov hlau, uas tuaj yeem ua rau hauv daim ntawv ntawm billets, daim hlau lossis coils.
Txoj kev tsim
Seamless yeeb nkab ntau lawm
Cua sov lub billet: Lub billet yog muab tso rau hauv ib lub cub tawg thiab rhuab, feem ntau mus rau ib tug kub ntawm txog 1200 degree. Qhov kub siab no tuaj yeem ua rau cov pob zeb muaj cov yas zoo thiab pab txhawb kev ua haujlwm tom qab.
Piercing lag luam: Lub rhuab billet yog perforated siv ib tug mandrel los ua ib tug hollow raj. Cov txheej txheem perforation yuav tsum xyuas kom meej tias txoj haujlwm perforation yog qhov tseeb thiab lub qhov taub yog qhov sib xws kom tsis txhob muaj teeb meem xws li eccentricity.
Rolling thiab stretching: Cov yeeb nkab perforated yog dov thiab ncab, thiab qhov xav tau txoj kab uas hla thiab phab ntsa tuab yog maj mam ua tiav los ntawm ntau yam dov thiab ncab. Hauv cov txheej txheem no, qhov tsis muaj dov thiab ncab, xws li dov ceev, txo qis, thiab lwm yam, yuav tsum tau tswj nruj me ntsis kom ntseeg tau qhov tseeb qhov tseeb thiab qhov zoo ntawm cov yeeb nkab.
Kev ua haujlwm tom ntej: Cov yeeb nkab uas tau dov thiab ncab kuj yuav tsum tau ncaj nraim kom tshem tawm cov deformation xws li khoov los ntawm cov yeeb nkab thaum ua haujlwm; tom qab ntawd nws raug txiav mus rau qhov ntev yuav tsum tau ua kom tau raws li qhov xav tau ntawm cov ntawv thov sib txawv.
Welded yeeb nkab ntau lawm
Tsim cov hlau: Pib nrog steel coils lossis steel daim hlau, cov txheej txheem UOE feem ntau yog siv rau cov kav dej loj, uas yog, cov hlau phaj yog thawj zaug nias rau hauv U zoo li, ces maj mam nias rau hauv O zoo, thiab thaum kawg nthuav dav mus txog qhov. xav tau txoj kab uas hla; rau cov kav dej me me, cov txheej txheem txuas txuas txuas ntxiv yog siv los ua kom cov hlau tsis tu ncua rau hauv cov duab cylindrical.
Vuam ua haujlwm: Siv submerged arc vuam (SAW) lossis hluav taws xob tsis kam vuam (ERW) thev naus laus zis los txuas cov npoo ntawm lub tog raj kheej ua ke. Submerged arc vuam yog tsim rau vuam loj txoj kab uas hla thiab thicker phab ntsa kav, thiab muaj peev xwm muab siab dua vuam zog thiab zoo; hluav taws xob tsis kam vuam feem ntau yog siv rau txoj kab uas hla me me thiab nyias-walled kav, thiab muaj qhov ceev vuam ceev.
Kev kho cua sov
Tom qab tsim, API 5L L360 cov kav dej feem ntau yuav tsum tau kho cua sov kom tau txais cov khoom siv kho tshuab uas xav tau.
Normalizing kev kho mob: Cov yeeb nkab yog rhuab mus rau qhov kub thiab txias thiab tom qab ntawd txias hauv huab cua. Normalizing tuaj yeem kho cov qauv nplej, txhim kho lub zog, toughness thiab machinability ntawm cov hlau, thiab ua kom cov yeeb nkab txhim khu kev qha hauv kev siv tom ntej.
quenching thiab tempering kev kho mob: Ua ntej, cov yeeb nkab tau txias sai sai kom tau txais cov qauv martensitic los txhim kho nws lub zog; ces nws yog reheated rau ib tug qis kub rau tempering, uas yuav ua tau zoo tshem tawm cov kev ntxhov siab nyob rau hauv generated los ntawm quenching, txhim kho toughness, thiab ua rau cov yeeb nkab muaj cov kev ua tau zoo ntawm siab zog thiab zoo toughness.
Kev kuaj tsis raug
Txhawm rau kom ntseeg tau tias qhov zoo thiab kev ncaj ncees ntawm API 5L L360 cov kav dej, yuav tsum muaj ntau yam kev ntsuas uas tsis muaj kev puas tsuaj.
Kev kuaj ultrasonic (UT): Ultrasonic nthwv dej raug xa mus rau hauv cov raj xa dej kom paub seb puas muaj qhov tsis xws luag hauv, xws li qhov pores, suav nrog, thiab lwm yam., thiab cov phab ntsa tuab tuaj yeem ntsuas qhov tseeb txhawm rau txheeb xyuas cov teeb meem xws li phab ntsa tuab hauv lub sijhawm.
Magnetic particle soj ntsuam (MPI): Nws yog tsuas yog siv los xyuas qhov tsis xws luag ntawm qhov chaw thiab nyob ze ntawm qhov chaw ntawm cov kav dej, xws li cov kab nrib pleb thiab cov plaub hau. Sprinkle magnetic hmoov rau ntawm qhov chaw ntawm lub raj xa dej. Nyob rau hauv qhov kev txiav txim ntawm magnetic teb, cov hmoov hlau nplaum yuav sib sau ua ke ntawm qhov tsis xws luag, yog li intuitively qhia qhov chaw thiab cov duab ntawm qhov tsis xws luag.
Kev kuaj hluav taws xob (RT): Tshawb xyuas qhov zoo ntawm cov yeeb nkab welded, uas tuaj yeem qhia meej qhov tsis xws luag hauv qhov vuam, xws li kev nkag tsis tiav, qhov pores, slag inclusions, thiab lwm yam, muab lub hauv paus txhim khu kev qha rau kev ntsuas qhov zoo.
Eddy kev kuaj tam sim no: Tsim nyog rau kev kuaj xyuas qhov tsis xws luag, tshwj xeeb tshaj yog qhov tsis xws ntawm cov kav dej seamless. Thaum ib qho chaw sib nqus sib nqus ua rau ntawm cov yeeb nkab, eddy tam sim no yog tsim los ntawm cov yeeb nkab nto. Yog tias muaj qhov tsis xws luag hauv cov yeeb nkab, qhov kev faib tawm thiab qhov loj ntawm cov eddy tam sim no yuav hloov, thiab qhov tsis xws luag tuaj yeem txiav txim raws li qhov no.
Kev ntsuam xyuas hydrostatic
Cov kav dej yuav tsum tau kuaj hydrostatically kom paub tseeb tias lawv muaj peev xwm tiv taus lub zog ua haujlwm. Thaum lub sijhawm kuaj, cov yeeb nkab tau ntim nrog dej thiab nias rau qhov ntsuas qhov ntsuas siab rau qee lub sijhawm los soj ntsuam seb cov yeeb nkab puas muaj dej los yog cov qauv tsis muaj zog. Los ntawm kev sim hydrostatic, cov kav dej uas muaj kev pheej hmoo zoo tuaj yeem raug tshuaj xyuas kom ntseeg tau tias cov kav dej tso rau hauv kev siv ua haujlwm zoo thiab ntseeg tau raws li kev ua haujlwm siab.
Txheej thiab tiv thaiv
Nyob ntawm qhov xav tau daim ntawv thov scenario ntawm API 5L L360 pipelines, cov txheej txheem sib txawv yuav raug siv los yog siv cov kev tiv thaiv corrosion.
Cov txheej txheem sab nraud: Rau cov kav dej faus, cov txheej txheem xws li fusion bonded epoxy (FBE) lossis peb txheej polyethylene (3LPE) feem ntau yog siv. Lub fused epoxy txheej muaj qhov zoo adhesion, corrosion kuj thiab hnav tsis kam, thiab tuaj yeem tiv thaiv cov raj xa dej kom tsis txhob raug corroded hauv av ib puag ncig; cov txheej peb-txheej polyethylene txheej muaj kev ua haujlwm zoo dua, thiab muaj kev ua haujlwm ntawm kev tiv thaiv corrosion, rwb thaiv tsev thiab kev tiv thaiv txhua yam.
Internal txheej: Nws yog siv los tiv thaiv cov khoom thauj los ntawm corroding lub puab phab ntsa ntawm cov kav dej. Piv txwv li, thaum thauj cov roj los yog cov roj av uas muaj cov xov xwm corrosive, cov txheej txheem sab hauv tuaj yeem ua lub luag haujlwm ntawm kev sib cais thiab kev tiv thaiv thiab txuas ntxiv lub neej kev pab cuam ntawm cov kav dej.
Kev tiv thaiv Cathodic: Kev tiv thaiv Cathodic yog ib qho tseem ceeb los tiv thaiv corrosion rau faus pipelines, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas muaj zog av corrosion. Los ntawm kev siv lub cathodic tam sim no rau hauv cov kav dej, cov kav dej saum npoo yog nyob rau hauv lub xeev cathodic polarization, inhibiting qhov tshwm sim ntawm corrosion, yog li tiv thaiv sab nraud corrosion.