Iqhia:
Hauv kev tsim cov hlau, muaj ob qib uas sawv tawm - S275JR thiab S355JR. Ob qho tib si koom nrog tus qauv EN10025-2 thiab siv dav hauv ntau yam lag luam. Txawm hais tias lawv lub npe zoo sib xws, cov qib no muaj cov yam ntxwv tshwj xeeb uas ua rau lawv sib txawv. Hauv tsab blog no, peb yuav tshawb nrhiav lawv qhov sib txawv tseem ceeb thiab zoo sib xws, tshuaj xyuas lawv cov tshuaj lom neeg, cov khoom siv kho tshuab, thiab cov qauv khoom.
Qhov sib txawv ntawm cov tshuaj lom neeg sib xyaw:
Ua ntej, cia peb tham txog qhov sib txawv ntawm cov tshuaj lom neeg sib xyaw. S275JR yog cov hlau carbon, thaum S355JR yog cov hlau tsis muaj hlau ntau. Qhov sib txawv no nyob rau hauv lawv cov ntsiab lus tseem ceeb. Cov hlau carbon feem ntau muaj hlau thiab carbon, nrog rau cov ntsiab lus me me. Ntawm qhov tod tes, cov hlau tsis muaj hlau ntau, xws li S355JR, muaj cov ntsiab lus sib xyaw ntxiv xws li manganese, silicon, thiab phosphorus, uas ua rau lawv cov khoom zoo dua.
Tus cwj pwm kho tshuab:
Hais txog cov khoom siv kho tshuab, ob qho tib si S275JR thiab S355JR qhia txog qhov sib txawv tseem ceeb. Lub zog tsawg kawg nkaus ntawm S275JR yog 275MPa, thaum ntawm S355JR yog 355MPa. Qhov sib txawv ntawm lub zog no ua rau S355JR zoo tagnrho rau cov ntawv thov kev tsim kho uas xav tau lub zog ntau dua los tiv taus cov khoom hnyav. Txawm li cas los xij, nws yuav tsum tau sau tseg tias lub zog tensile ntawm S355JR tsawg dua li ntawm S275JR.
Daim ntawv khoom:
Los ntawm qhov pom ntawm cov khoom lag luam, S275JR zoo ib yam li S355JR. Ob qib no siv rau hauv kev tsim cov khoom tiaj tus thiab ntev xws li cov phaj hlau thiab cov kav hlau. Cov khoom no yog tsim los rau ntau yam kev siv hauv kev lag luam xws li kev tsim kho mus rau tshuab. Tsis tas li ntawd, cov khoom tiav ib nrab ua los ntawm cov hlau kub-kuav los ntawm cov hlau tsis muaj hlau zoo tuaj yeem ua tiav ntxiv rau ntau yam khoom tiav.
EN10025-2 tus qauv:
Yuav kom muab cov ntsiab lus dav dua, cia peb tham txog tus qauv EN10025-2 uas siv rau S275JR thiab S355JR. Tus Qauv European no qhia txog cov xwm txheej xa khoom rau cov khoom tiaj tus thiab ntev, suav nrog cov phaj thiab cov raj. Nws kuj suav nrog cov khoom tiav ib nrab uas dhau los ua tiav ntxiv. Tus qauv no ua kom muaj qhov zoo sib xws thoob plaws ntau qib thiab cov yam ntxwv ntawm cov hlau tsis yog hlau kub dov.
S275JR thiab S355JR muaj sib xws li cas:
Txawm hais tias lawv txawv, S275JR thiab S355JR muaj qee yam zoo sib xws. Ob qib ua raws li EN10025-2 tus qauv, qhia txog lawv txoj kev ua raws li cov kev tswj hwm zoo nruj. Tsis tas li ntawd, lawv muaj ntau yam kev siv hauv ntau yam lag luam vim lawv cov khoom zoo, suav nrog kev vuam zoo thiab kev ua tiav. Tsis tas li ntawd, ob qib yog cov kev xaiv nrov rau cov hlau qauv thiab tuaj yeem muab lawv tus kheej qhov zoo nyob ntawm qhov xav tau tshwj xeeb.
Lub sijhawm tshaj tawm: Plaub Hlis-23-2024