Dab tsi yog qhov sib txawv ntawm cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau?
Hlau yog ib qho ntawm cov khoom siv feem ntau siv hauv ntau yam lag luam, xws li kev tsim kho, tsheb, thiab kev tsim khoom. Nws yog khoom plig rau nws lub zog, durability, thiab versatility. Txawm li cas los xij, tsis yog tag nrho cov hlau yog tsim sib npaug. Muaj ntau hom hlau, txhua tus muaj nws tus kheej muaj pes tsawg leeg thiab cov khoom.
Ib qho ntawm qhov sib txawv tseem ceeb hauv ntiaj teb cov hlau yog cov ntsiab lus carbon. Cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau yog ob pawg dav ntawm cov hlau uas sib txawv feem ntau ntawm cov ntsiab lus carbon. Kev nkag siab qhov sib txawv ntawm ob hom hlau no yog qhov tseem ceeb rau ntau yam kev siv thiab kev lag luam.
Tsawg Carbon Steel
Cov pa roj carbon tsawg, tseem hu ua cov hlau me me, feem ntau muaj hlau (Fe) thiab carbon (C). Hom hlau no yog tus cwj pwm los ntawm nws cov ntsiab lus qis, feem ntau yog li ntawm {{0}}.05% mus rau 0.25%. Cov ntsiab lus tsis tshua muaj cov pa roj carbon monoxide ua rau nws txoj kev ua tau zoo, ductility, thiab yooj yim ntawm vuam.
Ib qho txiaj ntsig tseem ceeb ntawm cov pa roj carbon tsawg yog nws cov nqi pheej yig. Nws yog dav muaj thiab kuj pheej yig, ua rau nws yog ib qho kev xaiv nrov rau ntau yam kev siv. Tsawg carbon steel feem ntau yog siv rau hauv kev tsim kho, kev tsim tsheb, thiab kev tsim khoom.
Txawm hais tias nws qhov zoo, cov hlau tsis muaj carbon tsawg muaj qee qhov kev txwv thiab. Nws cov ntsiab lus carbon tsawg ua rau qis zog thiab hardness piv rau cov pa roj carbon ntau dua. Nws tsis haum rau cov ntawv thov uas xav tau lub zog tensile siab lossis kev ua haujlwm zoo. Txawm li cas los xij, nws ua tau zoo hauv cov ntawv thov uas tseem ceeb tshaj plaws formability thiab weldability.
Tsawg Alloy Steel
Ntawm qhov tod tes, cov hlau tsis tshua muaj hlau yog ib hom hlau uas muaj cov khoom ntxiv sib nrug ntawm hlau thiab carbon. Cov alloying ntxiv no, xws li manganese, chromium, npib tsib xee, silicon, thiab molybdenum, hloov cov hlau cov khoom, ua rau nws tsim nyog rau cov kev siv tshwj xeeb.
Tsis zoo li cov pa roj carbon tsawg, cov hlau tsis tshua muaj cov pa roj carbon ntau dua, feem ntau yog li ntawm {{0}}.25% mus rau 0.5%. Qhov sib ntxiv ntawm cov ntsiab lus alloying txhim kho cov hlau lub zog, hardness, thiab corrosion kuj. Nws kuj tso cai rau ntau yam kev kho cua sov thiab kev hloov kho kom haum rau ntau lub hom phiaj.
Ib qho ntawm qhov zoo tshaj plaws ntawm cov hlau tsis tshua muaj hlau yog nws cov khoom siv kho kom zoo dua qub piv rau cov hlau tsis tshua muaj carbon. Cov ntsiab lus alloying ua rau muaj zog ntxiv, toughness, thiab hnav tsis kam. Qhov no ua rau cov hlau tsis tshua muaj hlau tsim nyog rau cov ntawv thov uas xav tau kev ua haujlwm siab dua thiab ua haujlwm ntev, xws li cov tshuab hnyav, cov cuab yeej tsim hluav taws xob, thiab cov khoom siv.
Qhov sib txawv ntawm Low Carbon Steel thiab Low Alloy Steel **
** Cov ntsiab lus carbon
Qhov sib txawv tshaj plaws ntawm cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau yog cov ntsiab lus carbon. Cov hlau tsis tshua muaj carbon tsawg muaj cov ntsiab lus qis ntawm {{0}}}05% mus rau 0.25%, thaum cov hlau tsis tshua muaj cov pa roj carbon ntau dua li ntawm 0.25 % mus rau 0.5%. Qhov sib txawv no cuam tshuam rau lawv cov khoom siv kho tshuab thiab kev siv.
Mechanical Properties
Vim nws cov ntsiab lus carbon ntau dua thiab muaj cov ntsiab lus alloying, cov hlau tsis tshua muaj hlau nthuav qhia cov khoom siv kho kom zoo dua qub piv rau cov hlau tsis muaj carbon. Nws yog tus cwj pwm los ntawm ntau zog, hardness, toughness, thiab hnav tsis kam. Tsawg carbon steel, ntawm qhov tod tes, muaj qis zog thiab hardness tab sis siab dua formability thiab weldability.
Daim ntawv thov
Cov khoom sib txawv ntawm cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau ua rau lawv tsim nyog rau kev siv tshwj xeeb. Tsawg carbon steel, nrog nws cov formability siab thiab weldability, feem ntau yog siv nyob rau hauv kev tsim kho, automotive manufacturing, thiab dav fabrication. Nws kuj yog nyiam rau nws cov nqi pheej yig. Cov hlau tsis tshua muaj hlau, nrog nws cov khoom siv kho kom zoo, yog tsim rau cov tshuab hnyav, cov khoom siv hluav taws xob tsim hluav taws xob, thiab cov khoom siv uas yuav tsum tau muaj zog dua thiab kav ntev.
Nqi
Tus nqi yog lwm qhov tseem ceeb uas yuav tsum tau xav txog thaum xaiv cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau. Tsawg carbon steel yog dav muaj thiab kuj pheej yig vim nws yooj yim muaj pes tsawg leeg. Hauv qhov sib piv, cov hlau tsis tshua muaj hlau, nrog nws cov ntsiab lus alloying ntxiv, nyhav dua li kim dua. Tus nqi sib txawv tuaj yeem cuam tshuam cov txheej txheem txiav txim siab rau qee yam kev siv.
Corrosion Resistance
Txawm hais tias ob qho tib si cov pa roj carbon tsawg thiab cov hlau tsis muaj hlau tsis tshua muaj kev cuam tshuam rau corrosion, muaj cov ntsiab lus alloying hauv cov hlau tsis tshua muaj hlau tuaj yeem txhim kho nws cov corrosion kuj. Nws yog ib qho tseem ceeb uas yuav tau xaiv hom hlau uas tsim nyog raws li qhov tshwj xeeb ib puag ncig thiab raug rau cov neeg ua haujlwm corrosive.
Kev kho cua sov
Qhov sib ntxiv ntawm cov ntsiab lus alloying nyob rau hauv cov hlau tsis tshua muaj hlau ua kom muaj zog ntxiv nyob rau hauv cov nqe lus ntawm kev kho cua sov. Cov hlau tsis tshua muaj hlau tuaj yeem raug rau ntau yam kev kho cua sov los hloov nws cov khoom, xws li annealing, normalizing, quenching, thiab tempering. Cov pa roj carbon tsawg, ntawm qhov tod tes, muaj kev xaiv kev kho cua sov tsawg vim nws cov ntsiab lus yooj yim.
Xaus
Hauv kev xaus, cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau yog ob hom hlau uas sib txawv ntawm cov ntsiab lus ntawm cov ntsiab lus carbon thiab muaj cov ntsiab lus ntxiv alloying. Cov pa roj carbon tsawg, tseem hu ua cov hlau me me, yog tus cwj pwm los ntawm nws cov ntsiab lus carbon tsawg, pheej yig, thiab siab formability thiab weldability. Nws yog feem ntau siv hauv kev tsim kho thiab kev tsim khoom. Tsawg alloy steel, nrog nws cov ntsiab lus carbon ntau dua thiab cov ntsiab lus alloying, muab cov khoom siv kho kom zoo, xws li lub zog, hardness, thiab corrosion kuj. Nws yog tsim rau cov tshuab hnyav, cov khoom siv hluav taws xob tsim hluav taws xob, thiab cov khoom siv hauv tsev. Kev nkag siab qhov sib txawv ntawm ob hom hlau no yog qhov tseem ceeb rau kev xaiv cov khoom tsim nyog rau ntau yam kev siv thiab kev lag luam.
