Dab tsi yog qhov muaj zog steel yeeb nkab lossis hlau yeeb nkab?
Taw qhia:
Thaum nws los txog rau kev tsim vaj tsev lossis tso cov kav dej, xaiv cov khoom tsim nyog yog qhov tseem ceeb heev. Ntawm cov kev xaiv muaj, steel thiab hlau kav yog feem ntau siv. Ob qho khoom siv muaj lawv cov yam ntxwv tshwj xeeb thiab lub zog, tab sis kev txiav txim siab uas muaj zog dua yuav tsum tau saib xyuas lawv cov khoom thiab kev siv. Hauv tsab xov xwm no, peb yuav tshawb txog qhov sib txawv ntawm cov kav hlau thiab hlau, tshuaj xyuas lawv lub zog, kev ua haujlwm ntev, thiab ntau yam los xav txog thaum xaiv cov khoom tsim nyog rau kev ua haujlwm.
Cov yam ntxwv ntawm cov yeeb nkab steel:
Cov kav hlau steel feem ntau yog tsim los ntawm cov hlau, nrog cov pa roj carbon ua cov khoom tseem ceeb alloying. Qhov sib ntxiv ntawm lwm yam, xws li manganese, silicon, thiab lwm yam hlau me me, hloov cov khoom ntawm cov hlau. Cov kav dej no paub txog lawv lub zog tshwj xeeb thiab muaj zog. Qee qhov tseem ceeb ntawm cov yeeb nkab steel uas ua rau lawv lub zog yog:
1. Tensile Strength: Cov kav hlau steel muaj lub zog tensile siab vim lawv muaj pes tsawg leeg thiab kev tsim khoom. Lub zog tensile yog hais txog lub peev xwm ntawm cov khoom siv los tiv thaiv rub lossis ncab quab yuam yam tsis muaj kev tawg lossis deforming. Cov kav hlau tuaj yeem tiv taus qhov hnyav, ua rau lawv haum rau ntau yam kev siv.
2. Ductility: Cov kav hlau muaj cov ductility zoo heev, uas tso cai rau lawv mus rau qhov deformation ntau dhau ua ntej rupturing. Cov cuab yeej no yog qhov tseem ceeb hauv cov xwm txheej uas cov khoom xav tau los tiv thaiv kev khoov, sib sau, lossis lwm yam kev ntxhov siab ntawm cov tshuab tsis ua haujlwm.
3. Resistant rau Deflection: Cov kav hlau tsis tshua muaj kev cuam tshuam rau hauv cov khoom hnyav piv rau cov kav hlau. Qhov no yog vim lawv ntau dua modulus ntawm elasticity, uas ntsuas cov khoom tiv thaiv rau deformation thaum raug rau ib tug thov quab yuam.
4. Corrosion Resistance: Cov kav hlau hlau tuaj yeem tsim nrog cov txheej txheem sib txawv, xws li galvanization, uas muab kev tiv thaiv corrosion zoo heev. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas raug cov dej noo, tshuaj lom neeg, lossis lwm yam corrosive yog ib qho kev txhawj xeeb.
Cov yam ntxwv ntawm Iron Pipes:
Cov kav hlau, tseem hu ua cam khwb cia hlau kav, yog tsim los ntawm cov hlau nrog me me ntawm lwm cov ntsiab lus. Thaum lawv tau siv ntau yam kev siv yav dhau los, lawv tau hloov pauv los ntawm cov kav hlau steel vim qee qhov kev txwv. Txawm li cas los xij, nws yog ib qho tseem ceeb kom nkag siab txog lawv cov khoom kom nkag siab txog qhov sib txawv ntawm lub zog ntawm cov kav hlau thiab hlau. Cov khoom tseem ceeb ntawm cov kav hlau muaj xws li:
1. Kev Txhaum Cai: Cov kav hlau hlau tsis muaj qhov ductility ntawm cov hlau thiab zoo li nkig. Lawv raug cuam tshuam los ntawm kev tawg lossis tawg hauv qhov nro lossis cuam tshuam, ua rau lawv tsis haum rau cov ntawv thov uas xav tau kev hloov pauv lossis kev ua siab ntev rau kev ntxhov siab.
2. Txwv Tensile Strength: Cov kav hlau feem ntau muaj zog tensile qis dua piv rau cov hlau. Lawv tuaj yeem ua tsis tau raws li qhov qis dua, cuam tshuam lawv qhov tsim nyog rau qee yam kev cai.
3. Qhov tsis zoo rau Corrosion: Cov kav hlau hlau yog qhov ua rau corrosion, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig ntub dej lossis thaum nkag mus rau cov tshuaj acidic lossis alkaline. Nyob rau tib lub sijhawm, qhov no tuaj yeem ua rau cov yeeb nkab degradation, txo lub neej ntev, thiab muaj peev xwm ua rau cov dej xau lossis ua tsis tiav.
4. Kev tiv thaiv hluav taws zoo: Ib qho zoo ntawm cov kav hlau hlau yog lawv cov hluav taws kub zoo heev. Lawv muaj lub siab melting point, uas ua rau lawv tsis tshua muaj kev puas tsuaj los ntawm hluav taws kub los yog kub heev. Cov cuab yeej no tseem ceeb tshwj xeeb hauv cov ntawv thov uas kev nyab xeeb hluav taws yog qhov kev txhawj xeeb tseem ceeb.
Tej yam yuav tsum tau xav txog thaum xaiv ntawm cov hlau thiab hlau kav:
Kev xaiv ntawm cov kav hlau thiab hlau yuav tsum tau ua tib zoo soj ntsuam ntawm ntau yam, suav nrog:
1. Cov Kev Xav Tau Lub Zog: Ntsuas qhov kev npaj siv thiab txiav txim siab lub zog xav tau rau daim ntawv thov. Cov kav hlau hlau feem ntau muaj zog dua thiab zoo dua rau kev ua haujlwm hnyav.
2. Tej yam tseem ceeb ntawm ib puag ncig: Xav txog tej yam kev mob ib puag ncig, nrog rau qib noo noo, muaj cov khoom corrosive, los yog huab cua kub heev. Yog tias kev tiv thaiv corrosion yog qhov tseem ceeb, cov kav hlau steel nrog cov txheej txheem tsim nyog yuav yog qhov kev xaiv zoo dua.
3. Kev txwv nyiaj txiag: Tus nqi yog qhov tseem ceeb rau kev txiav txim siab rau txhua qhov haujlwm. Cov kav hlau feem ntau yuav kim dua li cov kav hlau hlau. Kev ntsuas qhov kev xav tau ntawm cov peev nyiaj yog qhov tseem ceeb thaum tswj hwm qhov sib npaug ntawm tus nqi thiab lub zog xav tau.
4. Flexibility thiab Stress kam rau ua: Ntsuas qhov kam rau ntawm cov kav dej kom khoov, deformation, lossis kev ntxhov siab. Cov kav hlau muaj ntau dua ductility thiab tiv thaiv deflection, ua rau lawv haum rau cov ntawv thov qhov yooj yim yog qhov tseem ceeb.
Xaus:
Hauv kev xaus, cov kav hlau steel feem ntau muaj zog dua cov kav hlau vim lawv lub zog tensile ntau dua, zoo dua ductility, thiab tiv thaiv deflection. Cov khoom ntawm cov hlau ua rau nws muaj kev xaiv tsim nyog rau ntau yam kev siv cov qauv uas yuav tsum tau muaj kev ruaj khov, kev ua haujlwm ntev, thiab ua haujlwm rau cov khoom hnyav. Txawm li cas los xij, cov kav hlau hlau tseem tuaj yeem siv tau rau hauv cov xwm txheej tshwj xeeb uas lawv cov khoom tiv thaiv hluav taws muaj txiaj ntsig zoo lossis nyob rau hauv cov xwm txheej uas tus nqi txwv tsis pub dhau qhov xav tau tshwj xeeb lub zog. Thaum kawg, kev xaiv ntawm cov kav hlau thiab hlau yuav tsum tau ua tib zoo xav txog cov kev xav tau tshwj xeeb ntawm daim ntawv thov, ib puag ncig, kev txwv nyiaj txiag, thiab lwm yam kev xav txog.