Q235 thiab Q345 zoo li feem ntau tsis pom.Cov xim sib txawv tsis muaj dab tsi ua rau cov khoom siv ntawm cov hlau, tab sis qhov sib txawv ntawm txoj kev txias tom qab cov hlau tau dov tawm.Qhov qub, ib txwm txias saum npoo yog xim liab.Yog tias siv txoj kev quenching, qhov saum npoo tsim ib txheej oxide tuab, uas yuav tshwm dub.

Kev tsim lub zog dav dav nrog Q345, vim tias Q345 siab dua Q235 steel lub zog, steel xeev, tshaj 235 lub xeev 15% - 20%.Nws yog qhov zoo los siv Q235 thaum tsim kev tswj kev ruaj ntseg.Muaj qhov sib txawv ntawm 3% mus rau 8% ntawm tus nqi.

Raws li kev txheeb xyuas, muaj ntau txoj kev xav:

A: 1.Nyob rau hauv lub Hoobkas, sim welding tuaj yeem siv los ua kom paub qhov txawv ntawm ob yam khoom.Piv txwv li, siv E43 electrodes los welding me me puag ncig steel ntawm txhua ntawm ob daim hlau, thiab tom qab ntawd siv lub zog shear kom paub qhov txawv ntawm cov khoom ntawm ob daim hlau raws li qhov xwm txheej thaum lub sijhawm ua tsis tiav.

2. Nyob rau hauv lub Hoobkas, kev sib tsoo lub log yuav siv tau los sib txawv ntawm ob cov ntaub ntawv.Thaum cov hlau ntawm Q235 yog polished nrog kev sib tsoo log, lub txim ya tawm yog puag ncig nrog cov xim tsaus.Q345's spark yog bifurcated thiab ci.

3, kuj tseem muaj raws li qhov sib txawv ntawm cov xim sib txawv ntawm ob hom hlau tuaj yeem sib txawv ntawm ob hom hlau.Feem ntau, qhov chaw nres nkoj ntawm Q345 yog xim dawb.

B:1.Raws li cov xim ntawm cov hlau phaj, cov khoom ntawm Q235 thiab Q345 tuaj yeem paub qhov txawv: xim ntawm Q235 yog xiav, thiab xim ntawm Q345 yog xim liab (qhov no tsuas yog rau cov hlau xwb los rau hauv lub tshav pob, thiab nws muaj peev xwm. tsis pom qhov txawv tom qab lub sijhawm ntev).

2, feem ntau muaj peev xwm paub qhov txawv ntawm cov khoom ntawm qhov kev xeem yog tshuaj ntsuam xyuas, Q235 thiab Q345 carbon cov ntsiab lus tsis zoo ib yam, tib lub sij hawm cov ntsiab lus tshuaj tsis zoo ib yam.(Qhov no yog ib txoj hauv kev ua kom muaj tseeb.)

3, Q235 thiab Q345 cov khoom sib txawv, nrog vuam hom: ob yam khoom tsis paub ntawm cov hlau phaj taub qab, nrog cov vuam zoo tib yam rau vuam, yog tias qhov tawg sab ntawm cov phaj hlau yog cov khoom siv Q345.(Qhov no yog kev xyaum ua)