Q690E yog lub zog muaj zog qis alloy steel phaj, uas yog siv los tsim cov qauv tsim engineering siv nyob rau hauv atmospheric corrosive ib puag ncig, xws li txuas hniav thiab pylons, thiab lwm yam. Cov khoom zoo xws li lub zog tensile, tawm lub zog thiab cuam tshuam toughness.
Q690E steel phaj muaj cov cuab yeej zoo heev nrog cov khoom muaj zog thiab lub zog tensile, nrog rau zoo plasticity thiab toughness. Feem ntau, lub zog tawm ntawm Q690E steel phaj yog li ntawm 270 txog 345 MPa, lub zog tensile thaj tsam ntawm 470 txog 580 MPa, qhov elongation Ntau dua lossis sib npaug li 21%, thiab qhov cuam tshuam toughness Ntau dua lossis sib npaug li 47 J / cm. ^2. Cov cuab yeej cuab tam no ua kom muaj kev ntseeg siab ntawm Q690E steel phaj hauv ntau daim ntawv thov engineering.
Q690E steel phaj muaj qhov zoo corrosion kuj thiab tuaj yeem siv rau ntau qhov chaw corrosive. Nws qhov kev tiv thaiv corrosion feem ntau yog nyob ntawm cov tshuaj muaj pes tsawg leeg thiab kev kho saum npoo ntawm cov hlau phaj. Txij li Q690E steel phaj muaj qee qhov nyiaj ntawm chromium, qhov no yuav pab txhim kho nws cov corrosion kuj hauv oxidising media. Tsis tas li ntawd, yog tias yuav tsum muaj kev tiv thaiv corrosion ntau dua, kev kho deg xws li galvanization thiab chromium plating tuaj yeem siv rau cov phaj steel los txhim kho nws cov corrosion kuj.
Q690E steel phaj yog dav siv nyob rau hauv ntau yam engineering lug, xws li txuas hniav, siab hlab ntsha, cia tank, pipelines thiab thiaj li nyob. Vim nws lub zog siab thiab zoo corrosion kuj, Q690E steel phaj tau dhau los ua ib qho ntawm cov ntaub ntawv tseem ceeb hauv petrochemical, lub zog thiab lub zog, kev thauj mus los thiab lwm yam kev lag luam. Tsis tas li ntawd, nws kuj tau siv dav hauv cov qauv tsim, xws li cov tsev siab siab, kom ua tau raws li qhov xav tau ntawm lub zog siab thiab corrosion kuj.
