Hauv kev teeb tsa kev tsim qauv, qee cov ntawv hlau feem ntau tuaj yeem pom hauv cov khoom kem ntawm cov khaub thuas txias steel phaj t2, Q235, cov ntaub ntawv zoo li no, kuv tsis nkag siab thaum kuv thawj zaug hauv kev teeb tsa cov qauv, cov khoom siv kem yog yooj yim khau Q235, qhov no cov khoom kuj tseem cais, puas yog nws dov thiab kub dov?
1. Txheeb pom thiab zoo saum npoo av: phaj txias tau txais los ntawm cov phaj kub tom qab cov txheej txheem dov txias, thiab txias txias yuav tseem nqa tawm qee qhov chaw ua tiav, kom qhov zoo ntawm cov phaj txias (xws li saum npoo tawv) siab dua kub phaj los hauv ke, yog li muaj ntau dua qhov yuav tsum tau ua rau txheej zoo, xws li cov khoom lag luam tha xim, phaj txias thiab phaj feem ntau xaiv kub tau muab faib ua cov phaj pickled thiab tsis ntuav. Lub phaj pickled yog cov xim hlau tsis zoo, tab sis tsis txias txias, yog li saum npoo tseem tsis zoo li lub phaj txias. Qhov saum npoo ntawm cov phaj tsis muaj pickling feem ntau muaj txheej txheej oxide rau ntawm qhov chaw, uas yog xim dub, lossis muaj txheej txheej dub ntawm hlau tetroxide, uas feem ntau ua hluav taws. Thiab yog tias qhov chaw khaws khoom tsis zoo, feem ntau nws yuav coj qee yam paj ntaub.
Hauv kev luv luv, peb cov phaj txias yog cov uas muaj qhov ci ntsa iab, uas zoo li zoo, tsis muaj qhov qias neeg thiab tsis muaj xeb, thiab cov phaj kub yog cov nquag uas tsis zoo thiab qias neeg.
2. Ua daim ntawv ua tiav, qhov ua tau zoo ntawm kub thiab txias phaj yog qhov tsis sib txawv,
Qhov tseem ceeb yog qhov sib txawv hauv kev siv. Dov kub yog siv rau qhov yam ntxwv thiab dov txias yog feem ntau siv rau cov khoom ntsaws ruaj ruaj. Cov cuab yeej ua tau zoo thiab cov khoom noj zoo dua ntawm cov khaub thuas dov txias yog qhov zoo dua li ntawm cov kub dov daim hlau. Cov pa roj carbon ntsiab lus tsis tau hloov, nws yog tib yam.
Tsis muaj qhov sib txawv ntawm cov tshuaj muaj zog xws li cov ntsiab lus carbon thiab nws cov khoom siv, tab sis vim tias cov ntxuag txias muaj ntau cov txheej txheem ntau thiab cov txheej txheem yooj yim dua li cov dov kub, uas yog, ntau dua kev ua haujlwm nyuaj ntxiv, qhov nyuaj ntawm lub phaj txias yog me ntsis siab dua ntawd ntawm phaj kub. Qhov kev tawm tsam kuj tseem dua me ntsis, tab sis feem ntau tsis quav ntsej. Qhov tseeb, qhov sib txawv hauv qhov xwm txheej ntawm cov khoom. Feem ntau, qhov zoo tshaj plaws saum npoo thiab ua tiav ntawm lub phaj txias yog qhov zoo dua li ntawm lub kub phaj, thiab lub phaj kub (tsis xaiv) yog xim dub me ntsis (vim tias txheej oxide).
Cov phaj txias dov tau txais tom qab lub pob sov dov yog xaiv thiab txias dov los ntawm txias txias dov. Cov phaj txias heev yog dov nrog cov txheej txheem annealing, tab sis lub zog ntawm lub npoo tawv kuj tseem siab dua ntawd lub phaj kub.
