Hauv kev lag luam niaj hnub, cov siv tawv tsiaj txhu, raws li ib qho tseem ceeb kis tivthaiv, ua si ib lub luag haujlwm tseem ceeb. Nrog kev nce qib nruam ntawm kev tshawb fawb thiab thev naus laus zis, cov yam ntxwv tswv ntawm kev siv cov khoom siv kuj tseem tab tom txhim kho thiab txhim kho.
Cov menyuam muaj cov yam ntxwv zoo tshaj plaws ntawm lub zog siab thiab lub siab ntev. Lawv feem ntau yog ua los ntawm cov ntaub ntawv zoo, xws li high-zog hluav taws xob los yog cov kav hlau los tiv thaiv loj loj thiab hnyav, ua haujlwm ntev ntev. Txawm hais tias nyob rau hauv tsuas, metallurgy lossis siv tshuaj yeeb, kev siv tshuaj siv tau tuaj yeem ua kom tiav cov khoom sib kis tau.
Zoo siab xa nqi kis tau tseem ceeb yog qhov kom muaj txiaj ntsig loj ntawm txoj siv sia siv khoom. Los ntawm kev tsim qauv tsim thiab kev tsim cov txheej txheem, cov nro thiab nrawm nrawm nrawm los ua kom muaj txiaj ntsig zoo thiab muaj hwj huam raug. Hauv kev siv cov kab ntau lawm, cov kis tau tus nqi ntawm cov khoom siv khoom ntawm kev lag luam yog qhov tseem ceeb los txhim kho kev ua haujlwm tau ntau thiab cov khoom zoo.
Tsis tas li ntawd, txoj siv sia siv khoom kuj muaj kev hnav tsis kam thiab corrosion tsis kam. Hauv qhov chaw ua haujlwm sib txawv, txoj siv sia tuaj yeem tiv thaiv cov cawv ntawm cov khoom xws li hnav, tshuaj yaig thiab kub, thiab ntev lawv txoj kev pabcuam lub neej. Piv txwv li, hauv kev lag luam ua khoom noj, cov menyuam yuav tsum muaj cov khoom lag luam zoo tiv thaiv kev nyab xeeb zaub mov.
Kev tiv thaiv ib puag ncig thiab txuag hluav taws xob kom tseem ceeb tshaj plaws hauv kev txhim kho kev siv tshuab siv tshuab. Daim ntawv thov ntawm cov ntaub ntawv tshiab thiab kev ua kom zoo ua rau lub plab muaj zog haus lub zog tsawg dua thaum ua haujlwm ntawm cov lag luam. Nyob rau tib lub sijhawm, kev siv cov khoom siv rov ua dua tshiab kuj tau ntsib cov kev tiv thaiv ib puag ncig thiab txhawb nqa kev txhim kho kev lag luam.
Nyob rau hauv lub neej yav tom ntej, muaj kev lag luam siv thev naus laus zis yuav txuas ntxiv ua kom muaj kev kawm ntxiv, ua tau zoo dua li kev lag luam, thiab muab cov kev xav tau zoo dua qub thiab txhim khu kev qha cov kev daws teeb meem.