Kev ua tau zoo thiab kev xaiv ntawm kev kub ceev cov phiaj txhuam hniav thiab carbide vas hniav
Qhov kev kawm ntawm cov hniav yog nyob ntawm qhov tsis zoo ntawm cov hlau, qhov tsis zoo thiab cov qauv ntawm cov qauv hniav. Hauv cov txheej txheem tsim, cov khoom tsim tau thiab ua kom ntev ntawm cov nplauv ntsej muag, kev ntug hnav thiab ua tus nqi, nrog rau kev ua haujlwm thiab qhov zoo. Mus rau ib tug ntau, nws nyob ntawm qhov tsim nyog ntawm cov hniav xaiv. Qhov kev xaiv ntawm cov hniav siv yog ib qho tseem ceeb ntawm kev tsim thiab siv thiab ua cov "kawg xov".
Qhov kev pab cuam lub neej ntawm qhov txha hniav yog qhov tseem ceeb rau kev xaiv ntawm cov hniav hlau. Qhov sib txuam ntawm qhov kev paub ntawm cov hniav thiab cov khoom yuav tsum tau ua tiav yog qhov tseem ceeb rau kev xaiv ntawm cov hlau. Raws li cov hlau tau xaiv los ntawm cov hniav hlau thiab cov khoom siv dag zog thiab lub cev ntawm cov khoom yuav tsum tau ua tiav, lub neej ua haujlwm zoo yuav muab tau. Nyob rau hauv txoj kev tsim cov kev lag luam ntawm cov voj voog, qhov kev loj hlob ntawm cov hlau ua ib lub luag hauj lwm tseem ceeb nyob rau hauv kev nce qib ntawm shearing technology.
Cov ntaub ntawv sib piv ntawm cov hniav ncig
High-speed steel - high-speed hlau yog hais txog high-alloy lub cuab tam hlau nrog ntau cov ntsiab lus xws li tungsten, molybdenum, chromium thiab vanadium. Nws muaj lub zog siab thiab muaj zog thiab muaj qee yam tawv thiab hnav tsis taus. Haum rau txhua yam ntawm cov cav tov tuaj, cov txheej txheem tsim tau yooj yim, thiab nws yog ib qho yooj yim mus ua tiav rau hauv ib qho ntse ntug. Yog li ntawd, thaum cov cuab yeej tshiab cov cuab yeej tawm mus, high-speed steel round inserts tseem account rau ib feem coob hauv kev sib faib.
Tungsten carbide - cov khoom siv ua muaj hlau ua rau hlau carbides xws li WC, TiC, TaC, NbC thiab hlau khi xws li Co thiab Ni, uas yog ua los ntawm hmoov hlau metallurgy; hlau carbides muaj nyob rau hauv cemented carbides Cov khoom muaj siab melting point, highness hardness, stability tshuaj zoo thiab zoo thermal stability. Yog li ntawd, qhov nyuaj, hnav tsis kam thiab kub tsis kam ntawm cov tawv alloy cov khoom muaj heev.
Kev siv tawv nqaij feem ntau siv tungsten carbide ntau ntau dua li ntawm kev kub ceev. Ntawm 800-1000 ° C, lub hau carbide vas hniav kuj tuaj yeem ua tiav. Yog li, qhov kev ua tiav ntawm tungsten carbide yog siab dua li ntawm high-speed hlau, thiab lub cev muaj zog ntawm cov hniav tuaj yeem nws tuaj yeem nce ntau los ntawm ob peb zaug rau ob peb zaug ntawm lub sij hawm. Thaum lub zog ua haujlwm zoo li qub, qhov kev txiav txim siab yuav raug nce los ntawm 4 mus rau 10 zaug, thiab qhov zoo yog qhov cuab kev tseeb.
Txhua hom ntawm cov neeg kho tshuab hniav tau nws cov kev ua ntau yam thiab tsuas yog siv tau rau cov kev tsim thiab kev khiav ceev; qhov zoo ntawm cov hlau yog qhov yooj yim tshaj plaws cuam tshuam rau qhov zoo, kev ua tiav thiab kev pab cuam lub neej ntawm kev tuaj hniav. Hauv kev ua, lub hau hniav ntawm cov hniav tuaj yeem yog lub luag haujlwm rau kev ua haujlwm, yog li qhov nyuaj ntawm lub hau ntawm cov hniav tuaj yeem yog qhov tseem ceeb heev.
