Cov khoom siv S275JR sawv cev li cas?
S275JR hlauyog cov qauv hlau ua raws li EN 10025-2 tus qauv. Kev faib tawm:
"S" sawv cev rau cov qauv hlau;
"275" qhia qhov tsawg kawg nkaus tawm lub zog (MPa) ntawm cov hlau nrog lub thickness Tsawg dua los yog sib npaug rau 16 hli;
"JR" qhia cov qib zoo cuam tshuam nrog Charpy cuam tshuam lub zog tus nqi (27J, kuaj ntawm chav tsev kub 20 degree);
1.0044 yog lub npe steel rau S275JR.
Dab tsi yog qhov tseem ceeb los tiv thaiv - txoj kev xeb rau S275JR ERW steel yeeb nkab?
Lub ntsiab tiv thaiv - txoj kev corrosion rauS275JR qauv ERW steel yeeb nkabyog cov txheej txheej saum npoo, xws li kub-dip galvanizing, zinc txau, thiab pleev xim; kev tiv thaiv cathodic; thiab kev kho tshwj xeeb ntawm welds.
Dab tsi yuav tsum tau ceev faj thaum thauj S275JR cov qauv ERW steel yeeb nkab?
Thaum thaujS275JR qauv ERW steel kav, yuav tsum tau ceev faj, suav nrog kev ntim khoom tsim nyog thiab kev ruaj ntseg ntawm cov khoom los tiv thaiv cov kav dej los ntawm huab cua thiab corrosion, thiab tuav nrog cov cuab yeej tsim nyog thiab cov txheej txheem.
Dab tsi yog qhov txawv ntawm ERW steel kav thiab kauv welded steel kav?
ERW (tsis kam welded) steel kavyog tsim los ntawm welding ib tug ncaj weld seam rau hauv ib tug nruam steel sawb, uas ua rau lub siab geometric raug thiab uniform phab ntsa thickness. Kauv welded steel kav yog tsim los ntawm txuas ntxiv dov ib tug hlau sawb mus rau hauv ib tug kauv thiab welding lub weld seam; txawm hais tias cov kav dej loj dua tuaj yeem tsim tau siv cov hlau nqaim.
Dab tsi yog qhov siab -cov kabmob muaj peev xwm ntawm S275JR cov qauv ERW steel kav?
S275JR qauv ERW steel kavmuaj lub zog siab, nrog qhov tsawg kawg nkaus lub zog ntawm 275 MPa, yog li nthuav tawm lub siab zoo -cov kabmob muaj peev xwm. Qhov no tso cai rau lawv tiv taus cov loads loj thiab deformations, ua rau lawv haum rau siab -cov khoom siv bearing thiab cov qauv siv uas yuav tsum tau muaj kev weldability thiab durability.
