Nyob rau hauv lub realm ntawm manufacturing thiab fabrication, kev cia siab ntawm qhov chaw welding tshuab yog qhov tseem ceeb. Cov tshuab no ua lub luag haujlwm tseem ceeb hauv kev koom nrog cov hlau ua ke, ua kom muaj kev ncaj ncees ntawm cov khoom suav tsis txheeb uas peb ntsib hauv peb lub neej niaj hnub. Txhawm rau lav qhov zoo ntawm qhov chaw welds thiab tswj kev ua haujlwm ntawm cov tshuab no, cov kev tshuaj xyuas tsis muaj kev puas tsuaj yog qhov tseem ceeb.
Taw qhia
Resistance chaw vuam, cov txheej txheem dav siv hauv tsheb, aerospace, thiab kev tsim kho kev lag luam, suav nrog kev sib xyaw ntawm ob daim hlau los ntawm kev siv cov cua sov thiab siab. Qhov zoo ntawm cov welds no yog qhov tseem ceeb, vim lawv txiav txim siab qhov ua haujlwm ntev thiab kev nyab xeeb ntawm cov khoom kawg. Cov kev tshuaj ntsuam xyuas tsis muaj kev puas tsuaj (NDI) tau tshwm sim los ua ib qho cuab yeej tseem ceeb hauv kev ntsuam xyuas kev ncaj ncees ntawm qhov chaw welds yam tsis muaj kev puas tsuaj rau cov khoom siv welded.
Kev kuaj ultrasonic (UT)
Ib qho ntawm feem ntau siv NDI txoj kev rau qhov chaw vuam tshuab yog ultrasonic kuaj (UT). UT siv cov suab nrov nrov uas kis tau los ntawm kev sib koom ua ke. Cov nthwv dej no rov qab thaum lawv ntsib qhov tsis sib xws xws li voids lossis tawg hauv qhov vuam. Los ntawm kev tshuaj xyuas lub sijhawm nws siv rau cov echoes rov qab los thiab lawv qhov amplitude, cov neeg soj ntsuam tuaj yeem txheeb xyuas qhov tsis xws luag.
Kev ntsuas hluav taws xob (RT)
Kev kuaj hluav taws xob yog lwm cov txheej txheem NDI muaj zog. Nyob rau hauv txoj kev no, X-rays los yog gamma rays yog qhia los ntawm cov weld. Tom qab ntawd daim duab radiographic yog tsim los ntawm cov duab thaij duab lossis cov khoom siv digital. Discontinuities nyob rau hauv lub weld, xws li inclusions los yog voids, tshwm li ntxoov ntxoo ntawm lub xov tooj cua. Cov kws tshaj lij kws tshaj lij tuaj yeem txhais cov duab no los ntsuas qhov zoo ntawm vuam.
Eddy Current Testing (ECT)
Eddy kev ntsuam xyuas tam sim no tshwj xeeb yog qhov tseem ceeb rau kev kuaj xyuas qhov chaw thiab qhov chaw ze ntawm qhov chaw welds. Nws ua hauj lwm los ntawm inducing eddy tam sim no nyob rau hauv cov ntaub ntawv conductive thiab ntsuas kev hloov nyob rau hauv hluav taws xob conductivity tshwm sim los ntawm tsis xws luag. ECT yog ib txoj kev ceev thiab ntau yam uas tuaj yeem txheeb xyuas cov teeb meem xws li tawg, porosity, thiab variations ntawm cov khoom tuab.
Cov txiaj ntsig ntawm kev tshuaj xyuas tsis muaj kev puas tsuaj
Qhov zoo ntawm kev siv cov kev tshuaj ntsuam xyuas tsis muaj kev puas tsuaj rau qhov chaw vuam tshuab yog pom tseeb. Cov txheej txheem no tso cai rau kev tshawb pom ntxov ntawm qhov tsis xws luag, tiv thaiv kev tsim cov subpar lossis cov khoom tsis zoo. Lawv kuj txo cov khoom pov tseg thiab txuag lub sijhawm piv rau kev kuaj kev puas tsuaj, qhov twg cov vuam yog kuaj lub cev tsis ua haujlwm.
Hauv ntiaj teb kev tsim khoom, precision thiab kev ntseeg siab yog qhov tseem ceeb. Kev siv cov kev tshuaj ntsuam xyuas tsis muaj kev puas tsuaj rau qhov chaw vuam tshuab ua kom cov khoom peb tso siab rau kev nyab xeeb thiab kev ua tau zoo raws li cov qauv siab tshaj plaws. Los ntawm kev siv cov tswv yim zoo li kev kuaj ultrasonic, kuaj hluav taws xob, thiab kev ntsuas tam sim no, cov tuam ntxhab tuaj yeem tswj hwm lawv cov welds, txhim kho cov khoom zoo, thiab thaum kawg, tau txais kev ntseeg siab ntawm lawv cov neeg siv khoom.
Post lub sij hawm: Sep-14-2023
