Hauv cov ntawv thov tiag tiag, cov siv cov khoom siv feem ntau rauGB 8Kg Lub Teeb Railyog Q235b zoo tib yam carbon cov qauv hlau. Cov yam ntxwv ntawm hom hlau no txiav txim siab cov kev ua tau zoo thiab muaj feem cuam tshuam ntawm 8kg lub teeb ciav hlau.
Tus "Q" hauv Q235B sawv rau kom muaj zog ntawm cov hlau yog 235MPA, thiab "B" sawv rau qib zoo. Cov txheej txheem smelting ntawm cov khoom no yog paub tab. Thaum lub sijhawm cov txheej txheem ntau lawm, cov ntsiab lus ntawm cov pa roj carbon, manganese, thiab silicon yog tswj hwm kom muab nws ua tau zoo heev. Nws muaj qee lub zog thiab tuaj yeem tiv thaiv lub siab thiab cov kev cuam tshuam ntawm lub teeb thauj mus los hauv thaj chaw muaj tsheb thauj mus los hauv hav zoov thaj chaw thiab chaw thauj khoom hauv cov chaw me me. Nyob rau tib lub sijhawm, Q235b steel muaj cov khoom zoo. Thaum lub sij hawm tso ntawm lub teeb tsheb ciav hlau, nws tuaj yeem hloov kho qee qib ntawm kev khoov thiab deformation, uas yooj yim rau kev tsim kho thiab teeb tsa.
| Q235B | Cov Cuab Yeej Cuab Yeej Cuab Yeej | Tshuaj lom neeg muaj pes tsawg leeg (%) | |||||||||
| Paib lub zog | Lub zog tensile | Elongation | Kev nyuaj | C | Si | Mn | S | P | |||
| MPa | kg \/ mm² | MPa | kg \/ mm² | lub min | HB | Tsawg dua los yog sib npaug | Tsawg dua los yog sib npaug | Tsawg dua los yog sib npaug | |||
| Ntau dua los yog sib npaug | Ntau dua los yog sib npaug | ||||||||||
| 235 | 24 | 375-460 | 38-47 | 26% | 0.12-0.22 | 0.35 | 0.30-0.70 | 0.045 | 0.045 | ||
Los ntawm cov kev pom ntawm tus nqi, Q235b steel muaj cov khoom siv raw, ntau cov txheej txheem ua kom zoo dua qub, thiab kev ua haujlwm tshwj xeeb, ua rau nws ntau tus nqi sib tw hauv khw. Tsis tas li ntawd, Q235B steel muaj kev ua haujlwm vuam zoo. Thaum tso kev tsheb ciav hlau teeb, nws tuaj yeem yooj yim txuas cov ntu ntawm lub tsheb ciav hlau kom ntseeg tau tias kev sib txuas ntxiv thiab kev txhim kho nws yooj yim hauv kev siv.
Nws yog qhov tseeb vim yog cov qauv ntawm Q235b zoo tib yam siv rau GB 8kg teeb tsheb ciav hlau kom tau siv dav hauv ntau cov xwm txheej thauj khoom nrog cov khoom yuav qis dua.