Txias Tsim Welded Structural Rau Hluav Taws Yeeb Kab
In txias tsim welded qauvdaim ntawv thov, cov yeeb nkab sib txuas ua ke yog qhov tseem ceeb rau kev tsim cov qauv ruaj khov thiab txhim khu kev qha. Cov yeeb nkab no feem ntau yog ua los ntawm cov hlau zoo thiab tuaj yeem tiv taus cov khoom hnyav, ua rau lawv zoo tagnrho rau cov choj, cov tsev thiab lwm yam haujlwm tsim kho vaj tse.
| qib hlau | lub zog tsawg kawg nkaus | Lub zog tensile | Qhov ntev tsawg kawg nkaus | Lub zog cuam tshuam tsawg kawg nkaus | ||||
| Mpa | % | J | ||||||
| Qhov tuab uas tau teev tseg | Qhov tuab uas tau teev tseg | Qhov tuab uas tau teev tseg | ntawm qhov kub thiab txias ntawm | |||||
| mm | mm | mm | ||||||
| <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 | - | - | |||||
Cov Tshuaj Lom Zem
| Qib hlau | Hom de-oxidation a | % los ntawm pawg, siab tshaj plaws | ||||||
| Lub npe hlau | Tus lej hlau | C | C | Si | Mn | P | S | Nb |
| S235JRH | 1.0039 | FF | 0,17 | — | 1,40 | 0,040 | 0,040 | 0.009 |
| S275J0H | 1.0149 | FF | 0,20 | — | 1,50 | 0,035 | 0,035 | 0,009 |
| S275J2H | 1.0138 | FF | 0,20 | — | 1,50 | 0,030 | 0,030 | — |
| S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| a. Txoj kev deoxidation yog raws li nram no: | ||||||||
| FF: Cov hlau uas tua tag nrho uas muaj cov khoom sib txuas nrog nitrogen txaus kom sib txuas nrog nitrogen tau (piv txwv li tsawg kawg 0,020% tag nrho Al lossis 0,015% soluble Al). | ||||||||
| b. Tus nqi siab tshaj plaws rau nitrogen tsis siv yog tias cov tshuaj lom neeg qhia tias muaj tsawg kawg nkaus Al tag nrho cov ntsiab lus ntawm 0,020% nrog qhov tsawg kawg nkaus Al/N piv ntawm 2:1, lossis yog tias muaj lwm cov ntsiab lus N-binding txaus. Cov ntsiab lus N-binding yuav tsum tau sau tseg rau hauv Daim Ntawv Tshuaj Xyuas. | ||||||||
Tsis tas li ntawd xwb, hauv kev tiv thaiv hluav tawscov kav dej, kev siv cov kav dej sib txuas ua ke yog qhov tseem ceeb heev kom ntseeg tau tias muaj kev nyab xeeb thiab kev ntseeg siab ntawm lub kaw lus. Cov kav dej no tau tsim tshwj xeeb los tiv taus qhov kub thiab txias siab thiab tsim nyog rau kev siv hauv cov txheej txheem tiv thaiv hluav taws. Kev tsim kho ntawm cov kav dej sib txuas ua ke ua kom nws tsis xau thiab tswj tau qhov ruaj khov txawm tias nyob hauv qhov xwm txheej hnyav, ua rau nws yog ib qho tseem ceeb ntawm kev tiv thaiv hluav taws thiab cov txheej txheem tua hluav taws.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawmkauv seam welded yeeb nkabyog nws qhov kev hloov pauv tau yooj yim thiab kev hloov pauv tau rau ntau yam kev siv. Cov kav dej no tuaj yeem tsim tau ntau yam txoj kab uas hla thiab tuab kom ua tau raws li cov kev xav tau tshwj xeeb ntawm cov haujlwm. Tsis tas li ntawd, lawv tuaj yeem raug txheej nrog cov ntaub ntawv tiv thaiv kom txhim kho kev tiv thaiv xeb thiab txuas ntxiv lawv lub neej kev pabcuam, ua rau lawv tsim nyog rau kev siv hauv ntau qhov chaw thiab cov xwm txheej sib txawv.
Cov kav dej uas txuas nrog txoj hlua khi ua ke muaj qhov zoo dua thaum nws los txog rau kev teeb tsa thiab kev saib xyuas. Lawv tsis hnyav thiab yoog tau, ua rau lawv yooj yim thauj thiab tuav, txo lub sijhawm teeb tsa thiab cov nqi zog ua haujlwm. Tsis tas li ntawd, nws qhov ntev, txuas ntxiv mus txo qhov xav tau kev sib txuas ntxiv, txo qhov kev pheej hmoo ntawm kev xau thiab ua kom muaj lub kaw lus kav dej zoo dua thiab txhim khu kev qha.
Hauv kev xaus, cov yeeb nkab sib txuas ua ke yog ib qho tseem ceeb hauv ntau yam lag luam, tshwj xeeb tshaj yog nyob rau hauv cov qauv welded txias thiabkab yeeb nkab hluav tawsdaim ntawv thov. Nws txoj kev tsim kho ruaj khov, kev ua haujlwm siab thiab kev hloov pauv tau ua rau nws yog thawj qhov kev xaiv rau cov engineers, cov neeg cog lus thiab cov thawj coj haujlwm. Txawm hais tias tsim cov qauv ruaj khov lossis tsim cov txheej txheem tiv thaiv hluav taws kub uas muaj kev nyab xeeb thiab txhim khu kev qha, cov kav dej sib txuas yog qhov kev daws teeb meem tseem ceeb rau cov kev xav tau ntawm cov khoom siv niaj hnub thiab kev lag luam.
