Tom qab cov txheej txheem welding nyob rau hauv cov txiv ntoo qhov chaw vuam, nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo tshuaj xyuas los soj ntsuam qhov zoo thiab kev ncaj ncees ntawm cov vuam sib koom ua ke. Kab lus no muab cov ntsiab lus ntawm ntau yam kev sim siv rau kev soj ntsuam tom qab vuam hauv cov txiv ntoo qhov chaw vuam, qhia txog lawv qhov tseem ceeb hauv kev ntsuas kev ua haujlwm vuam.
- Kev Ntsuam Xyuas Kev Pom Zoo: Kev kuaj pom pom yog thawj zaug thiab feem ntau txoj hauv kev los ntsuas qhov zoo ntawm cov txiv ntoo welds. Nws suav nrog kev kuaj pom ntawm qhov sib koom ua ke rau qhov tsis sib xws, xws li tawg, porosity, spatter, lossis tsis tiav fusion. Kev tshuaj xyuas qhov muag pab txheeb xyuas qhov pom qhov tsis xws luag uas yuav cuam tshuam rau lub zog thiab kev ntseeg siab ntawm cov vuam.
- Macroscopic Examination: Kev ntsuam xyuas macroscopic suav nrog kev soj ntsuam qhov sib koom ua ke nyob rau hauv kev nthuav dav lossis nrog lub qhov muag liab qab los tshuaj xyuas nws cov qauv thiab geometry. Nws tso cai rau kev tshawb pom ntawm qhov tsis xws luag, suav nrog ntau dhau flash, misalignment, tsis tsim nyog nugget, lossis tsis txaus nkag. Kev ntsuam xyuas macroscopic muab cov ntaub ntawv tseem ceeb txog tag nrho qhov zoo thiab ua raws li cov kev qhia tshwj xeeb ntawm vuam.
- Microscopic Examination: Kev tshuaj xyuas microscopic yog ua los ntsuas qhov microstructure ntawm thaj chaw weld. Nws suav nrog kev npaj ntawm cov qauv metallographic, uas tom qab ntawd kuaj xyuas hauv lub tshuab tsom. Cov txheej txheem no yuav pab txheeb xyuas qhov muaj qhov tsis xws luag ntawm microstructural, xws li cov ciam teb tsis sib xws, theem intermetallic, lossis weld hlau cais. Kev tshuaj xyuas microscopic muab kev nkag siab rau hauv cov weld tus yam ntxwv metallurgical thiab nws muaj peev xwm cuam tshuam rau cov khoom siv kho tshuab.
- 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 qhov sib koom ua ke rau qhov tsis xws luag, xws li voids, porosity, lossis tsis muaj fusion. Nws yog cov txheej txheem NDT uas tau siv dav heev uas muab cov ncauj lus kom ntxaws txog cov txheej txheem vuam sab hauv yam tsis muaj kev puas tsuaj rau cov qauv. b. Radiographic Testing (RT): RT suav nrog kev siv X-rays lossis gamma rays los tshuaj xyuas qhov sib koom ua ke rau qhov tsis xws luag. Nws tuaj yeem kuaj pom qhov tsis zoo, xws li cov kab nrib pleb, kev sib koom ua ke, lossis tsis tiav fusion, los ntawm kev ntes cov hluav taws xob xa mus rau ntawm cov duab hluav taws xob lossis cov khoom siv digital. c. Sib Nqus Particle Testing (MPT): MPT yog ua hauj lwm los xyuas qhov chaw thiab nyob ze ntawm qhov chaw, xws li cov kab nrib pleb los yog discontinuities, siv magnetic teb thiab magnetic particles. Txoj kev no tshwj xeeb tshaj yog rau cov ntaub ntawv ferromagnetic.
- Mechanical Testing: Mechanical testing yog ua los ntsuam xyuas cov khoom siv ntawm cov txiv ntoo welds. Cov kev ntsuam xyuas feem ntau suav nrog kev sim tensile, kuaj hardness, thiab kuaj qaug zog. Cov kev ntsuam xyuas no ntsuas lub vuam lub zog, ductility, hardness, thiab qaug zog tiv thaiv, muab cov ntaub ntawv tseem ceeb ntawm nws cov kev ua tau zoo nyob rau hauv cov khoom sib txawv.
Kev soj ntsuam tom qab vuam yog qhov tseem ceeb hauv cov txiv ntoo qhov chaw vuam kom ntseeg tau qhov zoo thiab kev ntseeg siab ntawm qhov sib koom ua ke. Los ntawm kev siv kev tshuaj xyuas qhov muag, kev tshuaj xyuas macroscopic thiab microscopic, cov txheej txheem kuaj tsis muaj kev puas tsuaj, thiab kev sim tshuab, cov neeg ua haujlwm tuaj yeem soj ntsuam xyuas cov weld qhov kev ncaj ncees, kuaj xyuas qhov tsis xws luag, thiab ntsuas nws cov khoom siv kho tshuab. Cov kev tshuaj ntsuam xyuas no pab xyuas kom cov txiv ntoo qhov chaw welds ua tau raws li cov qauv thiab cov kev qhia tshwj xeeb, ua rau muaj kev nyab xeeb thiab ruaj khov welded sib dhos.
Post lub sij hawm: Jun-15-2023
