Cov Txheej Txheem Vuam Yeeb Nkab Hlau SSAW Rau Cov Kab Roj
SSAW yeeb nkab hlau, tseem hu ua cov yeeb nkab uas tau vuam hauv qab dej, feem ntau siv rau hauv kev teeb tsa cov kav dej roj vim nws ruaj khov thiab muaj zog. Txawm li cas los xij, qhov ua tau zoo ntawm cov yeeb nkab no nyob ntawm qhov zoo ntawm cov txheej txheem vuam siv thaum lub sijhawm teeb tsa. Cov txheej txheem vuam tsis zoo tuaj yeem ua rau cov pob qij txha tsis muaj zog thiab puas tsuaj, ua rau muaj kev phom sij rau kev nyab xeeb thiab kev ua tsis tiav ntawm lub kaw lus.
Khoom Siv Kho Tshuab
| qib hlau | lub zog tsawg kawg nkaus | Lub zog tensile | Qhov ntev tsawg kawg nkaus | Lub zog cuam tshuam tsawg kawg nkaus | ||||
| Qhov tuab uas tau teev tseg | Qhov tuab uas tau teev tseg | Qhov tuab uas tau teev tseg | ntawm qhov kub thiab txias ntawm | |||||
| <16 | > 16≤40 | <3 | ≥3≤40 | ≤40 | -20 ℃ | 0℃ | 20 ℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Ib qho ntawm cov yam tseem ceeb hauv kev ua kom muaj kev ruaj khov ntawm kev teeb tsa cov kav dej roj siv cov yeeb nkab hlau uas muaj kauv submerged arc welded yog kev xaiv cov txheej txheem vuam tsim nyog. Qhov no suav nrog kev xav txog cov txheej txheem vuam, cov ntaub ntawv sau thiab kev npaj ua ntej vuam. Tsis tas li ntawd, kev ua raws li cov qauv kev lag luam thiab cov cai yog qhov tseem ceeb rau kev ua kom ntseeg tau tias muaj kev ntseeg siab thiab kev nyab xeeb ntawmkab rojscov txheej txheem.
Kev npaj ua ntej vuam yog qhov tseem ceeb heev kom ntseeg tau tias vuam cov kav hlau uas tau muab kauv rau hauv qab dej uas tau vuam hauv cov kav roj tau zoo. Qhov no suav nrog kev ntxuav thiab tshuaj xyuas qhov saum npoo ntawm cov kav dej kom tshem tawm cov khoom tsis huv lossis cov qhov tsis zoo uas yuav cuam tshuam rau qhov zoo ntawm qhov vuam. Tsis tas li ntawd, kom ua tiav qhov vuam ruaj khov thiab txhim khu kev qha, cov kav dej yuav tsum tau ntsuas thiab teeb tsa kom raug.
Thaum lub sijhawm vuam tiag tiag, kev saib xyuas kom meej thiab ua raws li cov txheej txheem raug yog qhov tseem ceeb heev. Kev xaiv txoj kev vuam tsim nyog, txawm tias TIG (tungsten inert gas welding), MIG (hlau inert gas welding) lossis SMAW (stick arc welding), yuav tsum tau xaiv raws li qhov xav tau tshwj xeeb ntawm kev teeb tsa cov kav dej roj. Tsis tas li ntawd, kev siv cov ntaub ntawv zoo thiab cov txheej txheem vuam ceev faj yog qhov tseem ceeb rau kev tsim cov vuam txhim khu kev qha thiab ruaj khov uas ua tau raws li qhov xav tau ntawm kev ua haujlwm ntawm cov kav dej roj.
Tsis tas li ntawd xwb, kev tshuaj xyuas thiab kev sim tom qab vuam yog cov kauj ruam tseem ceeb los xyuas kom meej tias qhov vuam zoo thiab kev ncaj ncees hauv kev teeb tsa cov kav dej roj siv cov yeeb nkab hlau SSAW. Cov txheej txheem sim tsis ua puas tsuaj, xws li kev sim radiographic thiab kev sim ultrasonic, tuaj yeem pab txheeb xyuas txhua qhov tsis zoo lossis kev tsis sib txuas hauv cov pob qij txha vuam kom lawv tuaj yeem kho tau sai thiab xyuas kom meej tias koj lub kaw lus kav dej roj ntseeg tau.
Hauv kev xaus lus, cov txheej txheem vuam kom raug yog qhov tseem ceeb rau kev teeb tsa cov kav roj siv cov kav hlau uas muaj kauv submerged arc welded. Kev ncaj ncees thiab kev nyab xeeb ntawm koj lub tshuab raj roj nyob ntawm qhov zoo ntawm koj qhov kev vuam, yog li cov qauv kev lag luam vuam thiab cov kev coj ua zoo tshaj plaws yuav tsum tau ua raws. Los ntawm kev muab qhov tseem ceeb rau kev npaj ua ntej vuam, cov txheej txheem vuam zoo, thiab kev tshuaj xyuas tom qab vuam kom huv si, cov neeg teeb tsa cov kav roj tuaj yeem ua kom ntseeg tau tias muaj kev ntseeg siab thiab kev nyab xeeb ntawm kev teeb tsa cov kav hlau SSAW rau cov ntawv thov raj roj.
