Q690R steel phaj yog ib hom tempered high-strength steel phaj, Q690R yog qib tshiab, kev siv lub teb chaws tus qauv tshiab GB/T713.6-2023, tuaj yeem dov. Kev xa khoom: quenched thiab tempered tempered xeev, tempering kub tsis tsawg tshaj 600 degree, tib qib thiab Q690DR (-50 degree cuam tshuam).
Q690R lub npe qhia:
Q - yield zog "yield" thawj tsab ntawv ntawm lo lus hanyu pinyin;
690 - qhov kev txwv qis dua ntawm lub zog tawm los ntawm cov kev cai ntawm tus nqi qis dua, chav tsev yog MPa (MPa);
R - lub nkoj siab "Rong" ntawm thawj tsab ntawv ntawm hanyu pinyin.
Q690R steel phaj muaj lub zog siab, siab toughness, qaug zog tsis kam, cuam tshuam tsis kam thiab lwm yam khoom zoo heev. Nws lub zog tensile ntawm 690MPa lossis ntau dua, yield zog ntawm 580MPa lossis li ntawd, elongation ntawm 16% lossis ntau dua. Tom qab qee qhov txheej txheem kho cua sov, nws lub zog thiab tawv tuaj yeem txhim kho ntxiv.
Vim nws cov khoom siv zoo heev thiab kev ua haujlwm vuam, Q690R steel phaj yog dav siv hauv kev tsim kho, txuas hniav, nkoj, tsheb, lub nkoj siab thiab lwm yam haujlwm. Nyob rau hauv lub tshav pob ntawm kev tsim kho, nws tuaj yeem siv rau hauv kev tsim cov tsev siab, cov choj loj loj thiab lwm yam khoom siv; nyob rau hauv lub tshav pob ntawm ships, nws yuav siv tau nyob rau hauv lub ntsiab qauv ntawm ships, siab hlab ntsha, thiab lwm yam .; nyob rau hauv lub tshav pob ntawm tsheb, nws yuav siv tau nyob rau hauv tsheb ciav hlau tsheb, tsheb lub cev, thiab lwm yam .; nyob rau hauv lub tshav pob ntawm cov hlab ntsha siab, nws tuaj yeem siv rau hauv kev tsim cov tank loj loj, reactors thiab lwm yam khoom siv.
