Tom qab ua tiav cov txheej txheem vuam siv cov txiv ntoo qhov chaw vuam tshuab, nws yog ib qho tseem ceeb uas yuav tsum tau ua cov kev soj ntsuam tom qab vuam los xyuas kom meej qhov vuam zoo thiab ua raws li cov qauv teev tseg. Muaj ntau txoj kev tshuaj xyuas yog siv los ntsuas qhov ncaj ncees thiab lub zog ntawm cov pob qij txha. Tsab ntawv xov xwm no nthuav tawm cov ntsiab lus ntawm ntau yam kev tshuaj xyuas siv rau kev kuaj tom qab vuam hauv cov txiv ntoo qhov chaw vuam ua haujlwm.
- Kev Ntsuam Xyuas Kev Pom Zoo: Kev kuaj pom pom yog qhov yooj yim tshaj plaws thiab thawj txoj hauv kev los ntsuas qhov zoo ntawm vuam. Ib tus kws tshuaj ntsuam xyuas tau tshuaj xyuas cov pob qij txha siv lub qhov muag liab qab txhawm rau txhawm rau pom qhov tsis xws luag xws li qhov tsis sib xws, weld hlaws uniformity, thiab cov cim qhia ntawm kev tsis tiav fusion lossis porosity. Txoj kev tshuaj ntsuam xyuas uas tsis muaj kev puas tsuaj no muab cov lus qhia tseem ceeb ntawm qhov pom ntawm qhov vuam tag nrho thiab tuaj yeem qhia tau tias muaj qhov tsis xws luag.
- Cov Kev Ntsuas Tsis Muaj Kev Puas Tsuaj (NDT) Cov Txheej Txheem: a. Ultrasonic Testing (UT): UT siv lub suab nrov zaus los tshuaj xyuas cov welds rau qhov tsis xws luag. Nws tuaj yeem txheeb xyuas qhov tsis sib xws, xws li cov kab nrib pleb lossis tsis muaj fusion, hauv qhov sib koom ua ke yam tsis muaj kev puas tsuaj rau cov khoom. UT tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau kev txheeb xyuas qhov tsis xws luag hauv cov welds tseem ceeb.
b. Radiographic Testing (RT): RT suav nrog kev siv X-rays lossis gamma rays kom tau txais cov duab ntawm qhov sib koom ua ke ntawm cov qauv sab hauv. Cov txheej txheem no tso cai rau cov neeg soj ntsuam txheeb xyuas qhov tsis xws luag sab hauv, voids, thiab suav nrog uas tej zaum yuav tsis pom thaum kuaj pom.
c. Magnetic Particle Testing (MT): MT feem ntau yog siv los tshuaj xyuas cov ntaub ntawv ferromagnetic. Nws suav nrog kev siv cov khoom sib nqus thiab cov khoom sib nqus mus rau qhov chaw weld. Cov particles yuav sau rau ntawm thaj chaw uas muaj qhov tsis xws luag, ua rau lawv pom tau yooj yim.
d. Liquid Penetrant Testing (PT): PT yog ua haujlwm los txheeb xyuas qhov tsis xws luag hauv cov khoom tsis ntxeem tau. Ib cov kua penetrant yog siv rau ntawm qhov chaw weld, thiab cov dej tob tob yog wiped tawm. Qhov seem penetrant yog tom qab ntawd nthuav tawm los ntawm daim ntawv thov ntawm tus tsim tawm, qhia txog txhua qhov tsis xws luag.
- Kev Ntsuam Xyuas Kev Puas Tsuaj (DT): Nyob rau hauv rooj plaub uas qhov vuam zoo yuav tsum raug soj ntsuam nruj heev, cov txheej txheem kuaj kev puas tsuaj yog ua haujlwm. Cov kev ntsuam xyuas no suav nrog tshem tawm ib feem ntawm qhov sib koom ua ke los tshuaj xyuas nws cov khoom siv kho tshuab thiab lub zog. Cov txheej txheem DT uas muaj xws li: a. Tensile Testing: Ntsuas qhov sib koom ua ke lub zog tensile thiab ductility. b. Khoov Kev Ntsuas: Ntsuas qhov vuam qhov kev tiv thaiv rau kev tawg lossis tawg hauv kev khoov kev ntxhov siab. c. Macroscopic Examination: Koom nrog kev faib thiab polishing qhov vuam los ntsuas nws cov qauv thiab vuam nkag.
Kev soj ntsuam tom qab vuam siv ntau txoj hauv kev yog qhov tseem ceeb kom ntseeg tau tias muaj kev ntseeg siab thiab zoo ntawm cov pob qij txha tsim los ntawm cov txiv ntoo qhov chaw vuam tshuab. Kev sib xyaw ua ke ntawm kev tshuaj xyuas qhov muag, cov txheej txheem kev sim tsis muaj kev puas tsuaj, thiab, yog tias tsim nyog, kev kuaj xyuas kev puas tsuaj muab kev nkag siab zoo rau kev sib txuas ntawm kev ncaj ncees thiab ua raws li cov qauv kev lag luam. Los ntawm kev siv cov kev tshuaj xyuas no, cov kws tshaj lij vuam tuaj yeem lav qhov kev nyab xeeb thiab kev ua haujlwm ntawm cov khoom siv welded hauv ntau daim ntawv thov.
Post lub sij hawm: Aug-03-2023
