Raws li cov khoom tseem ceeb rau kev xa hluav taws xob thiab kev txhawb nqa, cov khoom siv ntawm lub log tsav ncaj qha txiav txim siab qhov kev ntseeg siab, ua haujlwm ntev, thiab kev ua haujlwm ntawm cov khoom siv. Yuav ua li cas xaiv cov ntaub ntawv tsim nyog rau cov ntawv thov sib txawv yog qhov teeb meem tseem ceeb hauv engineering tsim thiab kev ua haujlwm thiab kev saib xyuas.
Los ntawm qhov kev xav ntawm kev ua haujlwm tseem ceeb, cov ntaub ntawv tsav tsheb yuav tsum ua kom tau raws li ntau qhov kev xav tau, suav nrog lub zog siab, hnav tsis kam, qaug zog tiv thaiv, thiab kev hloov pauv ib puag ncig. Ntawm cov hlau substrates, alloy steel yog qhov kev xaiv tseem ceeb vim nws cov khoom siv kho tshuab zoo heev -los ntawm kev ntxiv cov khoom xws li chromium thiab molybdenum, lub zog thiab tawv ntawm cov khoom tuaj yeem txhim kho tau zoo, ua rau nws haum rau hnyav -lub luag haujlwm, siab - zaus cuam tshuam engineering machinery scenarios. Ductile hlau, ntawm qhov tod tes, excels nyob rau hauv castability thiab vibration damping, thiab nws tus nqi qis ua rau nws nquag siv hauv cov khoom siv ua liaj ua teb uas yuav tsum muaj qhov xav tau ntawm cov khoom loj.
Rau kev khiav hauj lwm huab cua, kev qhia txog cov txheej txheem tshwj xeeb thiab cov ntaub ntawv sib xyaw ntxiv nthuav dav rau thaj tsam daim ntawv thov. Piv txwv li, nyob rau hauv cov av ntub, corrosive mining ib puag ncig, tsav log kho nrog nto nitriding los yog laser cladding yuav ua tau ib tug siab -hardness, hnav- resistant txheej ntawm lub substrate nto, thaum tib lub sij hawm txhim kho corrosion kuj. Nyob rau hauv lub teeb-load, siab- cov xwm txheej ceev, cov qauv sib xyaw ua ke nrog cov khoom siv hluav taws xob thiab cov khoom siv hlau yog nrov zuj zus, hnyav ib qho - peb rau ib - ib nrab ntawm qhov hnyav ntawm cov hlau tsoos. Qhov no txo qis kev siv hluav taws xob sib kis tau zoo, thiab lawv tus kheej -lubricating zog txo qis txij nkawm.
Kev xaiv cov khoom yuav tsum tau ua tib zoo ua raws li cov kev khiav hauj lwm tshwj xeeb: theem load txiav txim siab lub zog pib, nquag pib- nres cycles lossis cuam tshuam cov loads ua rau qaug zog, thiab qhov kub thiab txias thiab xov xwm corrosivity txwv cov khoom siv huab cua tsis kam. Piv txwv li, nyob rau hauv qis - qhov kub thiab txias ib puag ncig, cov ntaub ntawv uas muaj superior qis - kub toughness yuav tsum tau kom tsis txhob nkig tawg; nyob rau hauv siab - qhov kub thiab txias, thermal stability yog qhov tseem ceeb los tiv thaiv softening thiab deformation. Tsis tas li ntawd, tus nqi thiab lub neej- cov txiaj ntsig ntawm lub voj voog yuav tsum raug ntsuas -qee qhov siab- cov ntaub ntawv ua tau zoo yuav tsum tau nqis peev ntau dua, tab sis lawv qhov hnav tsis kam tuaj yeem txuas ntxiv mus hloov ntau zaus, ua rau muaj txiaj ntsig zoo ntawm kev lag luam.
Nrog rau kev txhim kho cov khoom siv thev naus laus zis thev naus laus zis, cov lus qhia tshiab xws li lub teeb yuag, siab - cov ntaub ntawv muaj zog sib xyaw thiab kev txawj ntse ntawm tus kheej- cov ntaub ntawv kho tau maj mam muab coj los siv, muab ntau txoj hauv kev rau kev txhim kho lub zog tsav tsheb. Nyob rau hauv lub neej yav tom ntej, cov ntaub ntawv raug txuam raws li kev khiav hauj lwm cov ntaub ntawv yuav dhau los ua ib qho kev txhawb nqa tseem ceeb rau kev txhawb nqa kev ua haujlwm zoo ntawm cov khoom siv.
