S275JR yog ib hom qauv hlau uas nws qhov kev ua tau zoo cuam tshuam ncaj qha rau kev ruaj ntseg thiab kev nyab xeeb ntawm cov qauv engineering. Lub zog tensile ntawm cov hlau no feem ntau yog nyob nruab nrab ntawm 410-560 MPa, thaum nws lub zog tawm los tsis tsawg dua 275 MPa. Cov txiaj ntsig no qhia txog cov hlau kev ua tau zoo nyob rau hauv kev ntxhov siab: lub zog tensile sawv cev rau qhov siab tshaj plaws tensile quab yuam cov khoom tuaj yeem tiv taus ua ntej tawg, thaum lub zog tawm los yog qhov tseem ceeb ntawm cov khoom pib mus ntev deformation.
Cov khoom siv kho tshuab ntawm S275JR feem ntau suav nrog cov hauv qab no:
- Tensile Strength: S275JR steel daim hlau muaj lub zog tensile zoo, feem ntau ntawm 430-580 MPa, lossis siab dua, ncav cuag 785 MPa. Qhov no txhais tau hais tias cov khoom muaj peev xwm tiv taus qhov siab tshaj plaws kev nyuaj siab uas nws tawg nyob rau hauv tensile quab yuam.
- Yield Strength: Lub zog tawm los ntawm S275JR yog nyob nruab nrab ntawm 270 MPa thiab 275 MPa, txawm hais tias qee cov ntaub ntawv qhia tias nws qhov taw tes tawm (σs) tsis tsawg dua 590 MPa. Lub zog tawm los yog tus nqi kev ntxhov siab uas cov khoom pib ua rau cov yas deformation thiab tseem yog ib qho tseem ceeb rau kev ntsuas cov khoom thauj khoom - cov kabmob muaj peev xwm.
- Elongation: Qhov elongation ntawm S275JR feem ntau ntau dua lossis sib npaug li 21%, txawm hais tias qee cov ntaub ntawv qhia txog thaj tsam ntawm 21% txog 26%. Elongation yog qib ntawm cov yas deformation cov khoom siv tuaj yeem ua ntej tawg, uas qhia txog nws cov khoom yas.
- Impact Toughness: Qhov cuam tshuam toughness (ak) ntawm S275JR feem ntau yog ntau dua lossis sib npaug li 47 J / cm², qhia tias cov khoom tuaj yeem nqus tau ntau lub zog thaum muaj kev cuam tshuam thiab muaj kev cuam tshuam zoo.
- Hardness: Lub hardness ntawm S275JR feem ntau tsis tshaj 187 HB, uas yog ib qho kev qhia ntawm ib cov khoom tsis kam mus rau lub zos deformation.
S275JR square thiab plaub lub raj ua haujlwm yam ntxwv:
Cov khoom txias txias thiab vuam zoo heev ua rau nws siv dav hauv kev tsim kho, txuas hniav, tsheb, nkoj, nkoj siab, thiab lwm yam.
Nws lub zog tawm los kuj tsis tshua muaj, tab sis nws cov plasticity thiab toughness yog qhov zoo, zoo absorbing seismic zog, ua rau nws haum rau siab - nce lub tsev.
Vim nws lub zog muaj zog thiab tawv, qaug zog tsis kam, cuam tshuam tsis kam, corrosion kuj, thiab lwm yam khoom zoo heev, nws yog dav siv hauv kev tsim khoom lag luam, xws li cov tshuab hnyav thiab offshore platforms.
S275JR Hollow Section Hoobkas
