Yuav ua li cas kom paub qhov txawv ntawm cov khoom siv phaj hlau yog Q235 thiab Q345?

Q235 Hlau PhajthiabQ345 Hlau PhajFeem ntau tsis pom sab nraud. Qhov sib txawv ntawm xim tsis muaj feem cuam tshuam rau cov khoom siv ntawm cov hlau, tab sis yog los ntawm ntau txoj kev txias tom qab cov hlau dov tawm. Feem ntau, qhov chaw yog xim liab tom qab txias ntuj. Yog tias txoj kev siv yog txias sai, qhov chaw ntawm kev tsim cov txheej oxide ntom ntom, nws yuav pom dub.
Kev tsim lub zog dav dav nrog Q345, vim Q345 dua li Q235 lub zog hlau, txuag hlau, dua li 235 txuag 15% - 20%. Txhawm rau tswj kev ruaj khov tsim nrog Q235 zoo. Tus nqi sib txawv ntawm 3% --- 8%.

Raws li kev txheeb xyuas, muaj ntau cov lus hais:
A.
1, lub Hoobkas siv tau los sim cov txheej txheem vuam kom paub qhov txawv ntawm ob yam khoom. Piv txwv li, hauv ob daim hlau phaj nrog E43 vuam pas nrig tau welded ib lub hlau puag ncig me me, thiab tom qab ntawd siv lub zog shear, raws li qhov kev puas tsuaj ntawm qhov xwm txheej kom paub qhov txawv ntawm ob hom hlau phaj khoom.
2, lub Hoobkas kuj siv tau lub log sib tsoo kom paub qhov txawv ntawm ob yam khoom siv. Q235 hlau nrog lub log sib tsoo thaum sib tsoo, cov hluav taws xob yog cov khoom puag ncig, xim tsaus. Thiab Q345 hluav taws xob yog bifurcated, xim ci.
3, kuj muaj qhov sib txawv ntawm qhov xim ntawm cov hlau raws li ob hom hlau, uas tuaj yeem paub qhov txawv ntawm ob hom hlau. Feem ntau, Q345 shear qhov ncauj xim yog dawb.
B.
1, raws li xim ntawm cov hlau phaj, koj tuaj yeem paub qhov txawv ntawm Q235 thiab Q345 cov khoom siv: xim ntawm Q235 yog xim ntsuab, Q345 yog xim liab (qhov no tsuas yog rau kev ua haujlwm ntawm cov hlau xwb, lub sijhawm tsis tuaj yeem paub qhov txawv)
2, qhov kev sim khoom sib txawv tshaj plaws yog kev tshuaj ntsuam tshuaj, cov ntsiab lus carbon Q235 thiab Q345 tsis zoo ib yam, thaum cov ntsiab lus tshuaj tsis zoo ib yam. (Qhov no yog txoj kev tsis muaj qhov yuam kev)
3, qhov sib txawv ntawm Q235 thiab Q345 cov khoom siv, nrog rau kev vuam: ob daim ntawm cov khoom tsis paub meej ntawm cov hlau pob tw, nrog rau cov pas nrig vuam ib txwm los vuam, yog tias muaj qhov tawg ntawm ib sab ntawm cov hlau phaj, nws yog Q345 cov khoom siv. (Qhov no yog kev paub dhau los)