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

Q235 Steel PhajthiabQ345 Steel Phajfeem ntau tsis pom sab nraud. Cov xim sib txawv tsis muaj dab tsi cuam tshuam nrog cov khoom siv ntawm cov hlau, tab sis yog tshwm sim los ntawm cov txheej txheem txias sib txawv tom qab cov hlau tau dov tawm. Feem ntau, qhov saum npoo yog xim liab tom qab ntuj txias. Yog tias txoj kev siv yog txias txias, qhov saum npoo ntawm qhov tsim ntawm ntom oxide txheej, nws yuav pom dub.
Kev tsim lub zog dav dav nrog Q345, vim tias Q345 dua li Q235 steel lub zog, txuag steel, tshaj 235 txuag 15% - 20%. Txhawm rau tswj kev ruaj ntseg tsim nrog Q235 zoo. Nqe sib txawv ntawm 3% --- 8%.

Raws li kev txheeb xyuas, muaj ob peb nqe lus:
A.
1, lub Hoobkas tuaj yeem siv los ntsuas cov txheej txheem vuam kom paub qhov txawv ntawm ob yam khoom. Piv txwv li, nyob rau hauv ob daim hlau phaj nrog E43 vuam pas nrig tau welded ib tug me me puag ncig steel, thiab ces siv lub shear quab yuam, raws li kev puas tsuaj ntawm qhov teeb meem kom paub qhov txawv ntawm ob hom steel phaj khoom.
2, lub Hoobkas tseem tuaj yeem siv lub log sib tsoo kom paub qhov txawv ntawm ob yam khoom. Q235 steel nrog lub log sib tsoo thaum sib tsoo, lub txim taws yog ib puag ncig, xim tsaus. Thiab Q345 sparks yog bifurcated, ci xim.
3, kuj tseem muaj raws li ob lub hlau shear nto xim sib txawv tuaj yeem paub qhov txawv ntawm ob hom hlau. General, Q345 shear lub qhov ncauj xim dawb
B.
1, raws li cov xim ntawm cov hlau phaj tuaj yeem paub qhov txawv ntawm Q235 thiab Q345 cov khoom: xim ntawm Q235 rau ntsuab, Q345 qee qhov liab (qhov no tsuas yog rau hauv cov hlau xwb, lub sijhawm tsis tuaj yeem txawv)
2, qhov sib txawv ntawm cov khoom siv feem ntau yog tshuaj ntsuam xyuas, Q235 thiab Q345 carbon cov ntsiab lus tsis zoo ib yam, thaum cov ntsiab lus tshuaj tsis zoo ib yam. (Qhov no yog ib txoj hauv kev tsis zoo)
3, qhov sib txawv ntawm Q235 thiab Q345 cov khoom siv, nrog vuam: ob daim ntawm cov khoom siv tsis paub tseeb ntawm lub taub qab steel, nrog cov vuam zoo tib yam rau vuam, yog tias muaj qhov tawg ntawm ib sab ntawm cov hlau phaj yog pov thawj tias Q345 khoom. (Qhov no yog kev xyaum ua)