Tsis yog-Kev kuaj kev puas tsuaj thiab kev puas tsuaj yog qhov sib cais ntawm cov kav dej uas ua tau ntau xyoo los ntawm ib qho uas ua tsis tiav hauv kev pabcuam, thiab Kev lees paub zoo rau cov kav hlau welded yog ib qho tseem ceeb ntawm kev kuaj xyuas hauv qhov system ntawd. Kab lus no piav qhia txog txoj kev sim, nws siv li cas rau kab yeeb nkab, thiab qhov txiaj ntsig txhais li cas rau tus neeg yuav khoom.
Tensile thiab Charpy impact tests xyuas lub zog thiab tawg toughness.
Txhua cov yeeb nkab yog hydrostatically kuaj rau lub siab raws li SMYS thiab phab ntsa.
UT, RT, ECT thiab MPI tshuaj xyuas lub cev thiab vuam yam tsis muaj kev puas tsuaj rau cov yeeb nkab.
DWTT thiab CTOD cov kev ntsuam xyuas npog kev puas tsuaj rau cov pa roj thiab qaub.
Daim ntawv pov thawj zeb khi txhua qhov tshwm sim rau tus lej kub thiab cov yeeb nkab ntau.
Vim li cas Kev Ntsuas Yuav Tsum Tau Ua rau Kab Yeeb Nkab
Kab yeeb nkab nqa hydrocarbons ntawm kev kub siab, thiab ib lub yeeb nkab tsis zoo tuaj yeem ua rau tag nrho cov kab. API 5L thiab ISO 3183 yog li ua qhov kev sim ua raws li kev cog lus: tshuaj ntsuam xyuas ntawm txhua qhov cua sov, tensile thiab cuam tshuam kev kuaj ntawm tus neeg sawv cev kuaj, ntsuas hydrostatic ntawm txhua cov yeeb nkab, thiab tsis yog- kev kuaj xyuas tag nrho cov yeeb nkab lossis thaj chaw vuam nyob ntawm PSL.
Kev Ntsuas Kev Ntsuas: Tensile, Impact thiab Hardness
Tensile tests paub meej tias cov txiaj ntsig thiab tensile lub zog thiab elongation; Charpy V-cov kev ntsuam xyuas qhov cuam tshuam los xyuas kom meej qhov tawg ntawm qhov ntsuas kub ntsuas; Kev tshawb fawb hardness tswj qhov kev pheej hmoo ntawm cov cheeb tsam nyuaj uas tawg hauv hydrogen. Rau cov khoom PSL2 qhov kev ntsuam xyuas cuam tshuam yog qhov yuav tsum tau ua, thiab qhov xav tau ntawm lub zog nqus tau raug teeb tsa los ntawm qib thiab txoj kab uas hla hauv tus qauv.
Hydrostatic thiab Kev Ntsuas Siab
Txhua cov yeeb nkab yog hydrostatically kuaj rau lub siab xam los ntawm phab ntsa tuab thiab SMYS, feem ntau 85 mus rau 100 feem pua ntawm cov lus qhia tsawg kawg nkaus kev ntxhov siab rau cov khoom siv, tuav rau lub sijhawm teev tseg. Qhov kev sim ua pov thawj ntawm cov yeeb nkab lub cev thiab cov vuam tuaj yeem muaj qhov siab yam tsis muaj qhov xau los yog qhov deformation mus tas li, thiab qhov ntsuas qhov siab thiab tuav lub sij hawm raug kaw rau ntawm daim ntawv pov thawj.
Tsis yog -Kev kuaj xyuas lub cev thiab vuam
Ultrasonic kuaj (UT) scans lub cev ntawm seamless yeeb nkab thiab weld cheeb tsam ntawm welded yeeb nkab rau laminations thiab volumetric tsis xws luag; eddy tam sim no kuaj (ECT) yog siv rau ntawm ERW seams; Kev ntsuas hluav taws xob (RT) khaws cov ntaub ntawv zoo ntawm cov yeeb yaj kiab lossis cov duab digital. Magnetic particle soj ntsuam (MPI) thiab dye penetrant testing (PT) qhia cov kab nrib pleb ntawm cov yeeb nkab kawg thiab bevels. Kev sib xyaw ua ke yuav tsum tau teev nyob rau hauv tus qauv thiab daim ntawv xaj yuav khoom.
Kev Xeem Tshwj Xeeb rau Kev Pabcuam hnyav
Rau kev pabcuam qaub, poob- hnyav kua muag kuaj (DWTT) thiab tawg qhov qhib qhov chaw hloov chaw (CTOD) kev kuaj xyuas kom ntseeg tau tias tiv thaiv kev tawg tawg; rau cov kab yeeb nkab rau kev siv ntug dej hiav txwv los yog arctic, ntxiv los ntawm - kev ntsuas tuab thiab qis - qhov ntsuas qhov ntsuas kub yuav raug teev tseg. Cov kev ntsuam xyuas no yog ua los ntawm cov qauv ntawm tib lub tshav kub thiab cov txheej txheem raws li cov yeeb nkab xa.
Nyeem daim ntawv pov thawj Mill Test
Daim ntawv pov thawj zeb xeem (MTC) yog cov ntaub ntawv xa khoom uas txuas txhua qhov tshwm sim rau tus lej xov tooj cua sov thiab cov yeeb nkab ntau: tshuaj ntsuam xyuas, tensile thiab cuam tshuam qhov tseem ceeb, ntsuas hydrostatic siab, NDT txoj kev thiab qhov tshwm sim, qhov ntev thiab cov qauv siv tau thiab PSL. Cov neeg yuav khoom yuav tsum xyuas kom meej tias MTC phim qhov kev txiav txim, tias tsab ntawv ntawm tus qauv muaj npe, thiab qhov thib peb - cov ntawv pov thawj tog muaj nyob rau qhov xav tau.
Cov lus nug nquag
Kev ntsuam xyuas kev puas tsuaj (tensile, cuam tshuam, hardness) yog ua los ntawm cov qauv txiav los ntawm cov khoom thiab haus cov qauv; tsis yog-kev kuaj kev puas tsuaj (UT, RT, ECT, MPI) tshuaj xyuas cov yeeb nkab xa tawm yam tsis muaj kev puas tsuaj.
Muab pov tseg- qhov hnyav tsim kua muag, qhov kev kuaj pob txha uas txheeb xyuas qhov kev ntes ntawm kev nthuav tawm cov kab nrib pleb hauv kab yeeb nkab, feem ntau xav tau rau cov roj kab thiab kev pabcuam qaub.
Yog lawm. API 5L yuav tsum tau kuaj hydrostatic ntawm txhua qhov ntev ntawm cov yeeb nkab, nrog rau qhov kev sim siab thiab tuav lub sij hawm kaw rau ntawm daim ntawv pov thawj.
ERW seam feem ntau yog kuaj xyuas los ntawm kev kuaj ultrasonic thiab kev ntsuas tam sim no dhau ntawm qhov ntev seam.
PSL2 ntxiv qhov yuav tsum tau kuaj Charpy cuam tshuam ntawm qhov ntsuas qhov kub thiab txias vim tias qhov tawv nqaij tawg yog cov cuab yeej uas txwv tsis pub nkig tsis ua haujlwm nyob rau hauv siab - cov kab hluav taws xob siab.
Cov xov tooj cua sov, chemistry, tensile thiab impact results, hydrostatic test data, NDT method and results, dimensions, standard edition and PSL, and any third -tog check stamps.
