Kev Ntsuam Xyuas Kev Pom Kev (Surface Examination): Kev tshuaj xyuas qhov zoo ntawm cov pob qij txha welded yog ib qho yooj yim tsis tau siv dav uas tsim ib qho tseem ceeb ntawm kev tshuaj xyuas cov khoom kawg. Nws yog lub hom phiaj tseem ceeb los txheeb xyuas qhov tsis xws luag ntawm qhov chaw thiab qhov sib txawv ntawm qhov sib txawv hauv qhov vuam seam. Qhov kev tshuaj xyuas no feem ntau yog ua los ntawm kev pom, siv cov cuab yeej xws li cov qauv qauv, ntsuas, thiab tsom iav tsom. Yog hais tias muaj teeb meem tshwm sim nyob rau ntawm qhov chaw weld, muaj feem yuav muaj qhov tsis xws luag nyob rau hauv lub weld.
Txoj Kev Tshuaj Xyuas Lub Cev: Cov txheej txheem tshuaj xyuas lub cev siv ntau yam tshwm sim ntawm lub cev rau kev ntsuas lossis kev txheeb xyuas. Kev kuaj tsis yog kev puas tsuaj (NDT) feem ntau yog ua haujlwm los tshuaj xyuas qhov tsis xws luag hauv cov khoom lossis cov khoom ua haujlwm. Hom NDT suav nrog kev kuaj ultrasonic, kuaj hluav taws xob, kuaj kua dej nkag, thiab kuaj cov khoom sib nqus.
Kev Ntsuas Lub Zog ntawm Cov Nkoj Siab: Cov hlab ntsha siab tau dhau los ntawm ob qho kev ntsuas qhov nruj thiab ntsuas lub zog. Ob txoj hauv kev yog kev sim hydrostatic thiab pneumatic test. Ob qhov kev ntsuam xyuas tau lees paub qhov xau nruj ntawm lub thawv thiab cov kav dej welds nyob rau hauv siab. Qhov kev sim pneumatic yog qhov rhiab heev thiab sai dua li qhov kev sim hydrostatic, tsis tas yuav tsum muaj cov kua dej tom qab, ua rau nws zoo tagnrho rau cov khoom uas muaj cov dej tsis zoo. Txawm li cas los xij, nws ua rau muaj kev pheej hmoo siab dua li qhov ntsuas hydrostatic. Kev ceev faj txog kev nyab xeeb yuav tsum tau saib xyuas thaum lub sijhawm kuaj kom tsis txhob muaj xwm txheej.
Kev Ntsuas Tightness: Welded ntim rau khaws cov kua los yog gases yuav tsum tau soj ntsuam nruj kom pom qhov tsis zoo xws li kev tawg, porosity, slag inclusions, incomplete penetration, thiab xoob microstructures. Kev ntsuam xyuas kev sib tsoo muaj xws li kev sim roj av, ntsuas dej nqa, thiab ntsuas dej dav hlau.
Kev Ntsuas Hydrostatic: Txhua cov yeeb nkab steel tau dhau los ua qhov ntsuas hydrostatic kom ntseeg tau tias tsis muaj qhov tshwm sim. Kev ntsuas siab yog suav nrog cov qauv P=2ST/D, qhov twg S yog qhov kev ntsuas kev ntxhov siab (MPa) xaiv raws li 60% ntawm qhov tsawg kawg nkaus lub zog tau teev tseg hauv cov qauv steel sawb (xws li 235MPa rau Q235 steel ). Lub sijhawm tuav ntawm qhov ntsuas siab tsis pub tsawg tshaj 5 vib nas this rau cov kav dej uas muaj cov kab uas hla tsawg dua 508mm thiab tsis pub tsawg dua 10 vib nas this rau cov kav dej uas muaj qhov sib npaug lossis ntau dua 508mm.
Kev Ntsuas Tsis Zoo (NDT): Kho welds, pob tw welds ntawm qhov kawg ntawm cov hlau strips, thiab cov welds ncig hauv cov kav hlau yuav tsum tau kuaj X-ray lossis ultrasonic. Rau kauv welds nyob rau hauv steel kav siv rau conveying flammable cov kua, 100% X-ray los yog ultrasonic soj ntsuam yuav tsum tau. Rau cov kav dej xa cov kua dej xws li dej, dej phwj tuaj, huab cua, thiab cua sov chav, random 20% ntawm kauv welds yuav tsum tau kuaj X-ray lossis ultrasonic.
Raws li kev soj ntsuam zoo, cov kav hlau kav yog feem ntau muab faib ua peb pawg: cov khoom tsim nyog, cov khoom siv rov ua dua tshiab, thiab cov khoom tsis lees paub. Cov khoom tsim nyog ua tau raws li ob qho tib si tsos thiab cov qauv zoo sab hauv lossis cov qauv kev lees paub. Cov khoom siv rov ua dua tsis ua raws li cov qauv, tab sis tuaj yeem kho kom tau raws li lawv. Cov khoom tsis lees paub yog cov uas tsis ua raws li cov qauv thiab tsis tuaj yeem kho lossis tsis ua raws li cov qauv txawm tias tom qab kho.
