Resistance chaw vuam yog ib qho tseem ceeb thiab cov txheej txheem tseem ceeb hauv ntau qhov kev lag luam, tab sis koj puas tau xav txog ntau hom kev sib tsoo macroscopic uas tuaj yeem tshwm sim hauv txoj kev vuam no? Hauv tsab xov xwm no, peb yuav tshawb txog ntau yam macroscopic tawg hom uas tuaj yeem pom hauv qhov chaw vuam tsis kam.
- Interfacial Fracture: Interfacial fractures, tseem hu ua "interfacial sib cais," tshwm sim ntawm qhov sib cuam tshuam ntawm ob cov ntaub ntawv welded. Hom kev puas tsuaj no feem ntau txuas rau qhov tsis zoo ntawm cov vuam tsis zoo thiab tuaj yeem tshwm sim los ntawm cov teeb meem xws li tsis txaus siab lossis tsis raug vuam tsis zoo.
- Khawm rub tawm: Cov pob khawm rub tawm pob txha muaj feem cuam tshuam nrog kev tshem tawm ntawm lub pob hlau molten tsim thaum lub sijhawm vuam txheej txheem. Qhov no tuaj yeem tshwm sim thaum cov khoom siv vuam tsis zoo sib txuas nrog cov ntaub ntawv hauv paus, ua rau lub pob raug rub tawm thaum kuaj.
- Kua muag: Tear fractures yog tus cwj pwm los ntawm kev tawg ntawm cov khoom siv puag ncig thaj tsam weld. Hom kev puas tsuaj no feem ntau tshwm sim thaum muaj cov cua kub ntau dhau los yog thaum cov vuam tsis tswj tau zoo.
- Plug: Plug tawg tshwm sim thaum ib feem ntawm ib qho ntawm cov khoom siv welded tau sib cais tag nrho ntawm qhov seem ntawm qhov vuam. Hom pob txha no tuaj yeem tshwm sim los ntawm ntau yam, suav nrog kev sib kis ntawm cov vuam electrodes lossis cov txheej txheem vuam tsis raug.
- Ntug Crack: Ntug kab nrib pleb yog cov kab nrib pleb uas tsim nyob ze ntawm ntug ntawm qhov chaw welded. Lawv tuaj yeem tshwm sim los ntawm ntau yam xws li kev npaj cov khoom siv tsis zoo lossis kev sib raug zoo ntawm electrode.
- Nugget Fracture: Nugget fractures koom nrog qhov tsis ua haujlwm ntawm thaj av hauv nruab nrab, hu ua "nugget." Cov pob txha no tseem ceeb heev vim tias lawv tuaj yeem cuam tshuam kev ncaj ncees ntawm tag nrho cov weld. Nugget fractures tuaj yeem tshwm sim los ntawm qhov tsis txaus vuam siab lossis qhov tsis raug vuam tsis zoo.
- Fissure: Fissure fractures feem ntau yog me me tawg los yog fissures nyob rau hauv cov khoom siv vuam. Cov no tuaj yeem nyuaj rau kev kuaj pom qhov muag tab sis tuaj yeem ua rau tag nrho cov qauv weld tsis muaj zog. Fissures yuav tshwm sim vim muaj teeb meem nrog cov txheej txheem vuam lossis cov khoom siv zoo.
Nkag siab txog cov kev sib txawv ntawm macroscopic fractures nyob rau hauv qhov chaw vuam yog qhov tseem ceeb rau kev ua kom zoo thiab kev ntseeg siab ntawm cov pob qij txha hauv ntau yam kev siv. Cov neeg ua haujlwm vuam thiab cov neeg soj ntsuam yuav tsum tau ceev faj hauv kev kuaj xyuas thiab hais txog cov pob txha tawg no kom muaj kev ncaj ncees ntawm cov khoom siv welded.
Hauv kev xaus, qhov chaw vuam tsis kam tuaj yeem ua rau ntau hom macroscopic tawg, txhua tus nrog nws cov txheej txheem ua rau thiab cuam tshuam. Kev txheeb xyuas cov pob txha no thiab hais txog lawv cov hauv paus hauv paus yog qhov tseem ceeb rau kev tsim cov vuam zoo uas ua tau raws li cov qauv nruj ntawm cov kev lag luam niaj hnub no.
Post lub sij hawm: Sep-14-2023
