Puas yog S275JR kub dov?
Yog lawm,S275 JRyog kub-rolled steel.
Qhov no yog ib qho tseem ceeb ntawm cov khoom siv qib no. Nov yog cov ncauj lus kom ntxaws:
Yog vim li cas S275JR kub -Rolled
Standard Txhais: Raws li nws txoj cai tswj hwm tus qauv EN 10025-2, S275JR raug xa mus rau hauv cov xwm txheej "raws li dov". Qhov no txhais tau hais tias qhov kawg shaping txheej txheem yog kub dov ntawm steel zeb, tsis muaj tom qab kev kho cua sov (xws li normalizing los yog quenching & tempering) thov.
Tus "R" hauv nws lub npe: Cov lus "R" hauv S275JR txhais tau tias "Rolled" (raws li tsis yog "N" rau "Normalized" hauv lwm qib hauv tib tus qauv). Qhov no qhia meej meej nws cov txheej txheem tsim khoom.
Pawg Khoom: Nws yog nyob rau hauv qeb ntawm cov tsis yog - alloy structural steels, uas yuav luag tsuas yog tsim los ntawm tus nqi - zoo thiab kub kub- dov txheej txheem kom ua tau raws li qhov yuav tsum tau muaj qhov ntev ntev thiab cov khoom siv kho tshuab.
Qhov cuam tshuam ntawm Kev Kub Kub-Rolled rau Qhov Kawg-Cov neeg siv
| Yam | Qhov cuam tshuam rau S275JR |
|---|---|
| Nto tiav | Muaj tus yam ntxwv xiav -grey zeb nplai (hlau oxide) nto. Rau tha xim los yog galvanizing, qhov ntsuas no yuav tsum tau muab tshem tawm los ntawm kev ntxuav los yog pickling. |
| Dimensional Tolerances | Tolerances (thickness, flatness) yog dav dua rau txias-khoov hlau. Haum rau feem ntau cov ntawv thov uas haum haum- ua tiav los ntawm fabrication (txiav, vuam). |
| Mechanical Properties | Cov khoom yog ua tiav los ntawm cov tshuaj muaj pes tsawg leeg thiab cov txheej txheem dov nws tus kheej (tswj qhov kub thiab txias). Lawv yog cov isotropic nyob rau hauv lub dav hlau ntawm lub phaj. |
| Nqi | Tus nqi siab - zoo. Kub dov yog qhov siab - ntim, cov txheej txheem txuas ntxiv, ua S275JR yog ib qho ntawm cov qauv tsim nyog tshaj plaws. |
| Muaj | Muaj nyob rau hauv ntau yam thicknesses (los ntawm ~ 3 hli mus rau ntau tshaj 100 hli) thiab cov ntaub ntawv (phaj, nplooj ntawv, yam ntxwv seem xws li kab teeb, raws, ces kaum). |
| Ua haujlwm tau | Raws li - dov lub xeev muab qhov sib npaug zoo ntawm lub zog thiab ductility, ua rau nws zoo heev rau kev khoov txias, xuas nrig ntaus, thiab drilling thaum tsim. |
Kev sib piv nrog lwm yam kev ua haujlwm
Kom meej meej, S275JR tsis yog:
Txias-Rolled (CR): Txias dov yog siv rau cov ntawv nyias / strips kom ua tiav cov npoo du thiab nruj dua (feem ntau hauv cov tsheb lossis cov khoom siv hluav taws xob). S275JR daim hlau tsis ua tiav li no.
Normalized (N): Ib qib zoo li S275N lossis S355N tau txais kev kho cua sov ntxiv (normalizing) tom qab dov los kho cov qauv nplej thiab txhim kho cov tawv tawv, tshwj xeeb tshaj yog rau cov ntu tuab. S275JR tsis muaj qhov kev kho no.
Quenched & Tempered (Q): Siab- lub zog steels zoo li S690QL tau txais kev kho cua sov (quenching thiab tempering) kom ua tiav lub zog siab heev. Qhov no yog txheej txheem sib txawv thiab kim dua tsis siv rau S275JR.
Cov ntsiab lus teb
Yog, meej. S275JR yog tus qauv kub - dov structural steel. Nws cov xwm txheej "raws li-rolled" yog lub hauv paus rau nws tus kheej, pab ncaj qha rau nws cov khoom siv dav dav, kev tsim khoom zoo, thiab tus nqi nyiaj txiag, ua rau nws xaiv ntau tshaj plaws rau kev tsim kho thiab kev tsim khoom. Qhov kub- dov zeb nplai ntawm nws qhov chaw yog qhia- zaj dab neeg ntawm nws txoj kev tsim khoom.
