Cemented carbide cov khoom yog ib chav kawm ntawm cov hmoov metallurgy cov ntaub ntawv uas muaj zog hardness thiab siab hnav tsis kam. Lawv yog tsim los ntawm refractory hlau tebchaw thiab binder hlau los ntawm precision txheej txheem. Lawv qhov kev ua tau zoo sib xyaw ua ke ua rau lawv tsis tuaj yeem hloov pauv hauv thaj chaw xws li kev tsim khoom siv tshuab, mining, thiab hluav taws xob, ua ib qho ntawm cov khoom siv tseem ceeb ntawm kev lag luam niaj hnub no.
Los ntawm kev xav txog kev sib xyaw, cemented carbide feem ntau siv carbides xws li tungsten carbide (WC) thiab titanium carbide (TiC) raws li theem matrix. Cov tebchaw no muaj cov ntsiab lus melting siab thiab siab hardness, muab cov khoom zoo heev hnav tsis kam thiab siab -kub tsis kam. Lub binder theem feem ntau siv cobalt (Co), npib tsib xee (Ni), los yog hlau -raws li alloys, ua tiav metallurgical bonding nrog cov theem nyuaj los ntawm cov kua-theem sintering. Qhov no tuav lub siab hardness ntawm lub hard theem thaum tseem muab cov khoom ib tug tej℃ntawm toughness thiab machinability. Qee cov khoom siv siab- kawg kuj suav nrog cov khoom siv ntxiv xws li tantalum carbide (TaC) thiab niobium carbide (NbC) kom ua kom zoo siab - qhov kub thiab txias thiab tiv thaiv - muaj peev xwm adhesion.
Cov txiaj ntsig tseem ceeb ntawm cov khoom siv cemented carbide yog los ntawm kev sib koom ua ke ntawm lawv cov microstructure thiab cov qauv tsim. Qhov luaj li cas, kev faib tawm, thiab binder theem cov ntsiab lus ntawm carbide nplej tuaj yeem tswj tau los ntawm kev ua tiav: zoo -cov qauv ntawm cov nplej txhim kho cov khoom hardness thiab hnav tsis kam, ua rau lawv haum rau precision txiav cov cuab yeej; ntxhib-cov pob zeb lossis cov qauv gradient txhim khu kev cuam tshuam, ua tau raws li qhov xav tau ntawm cov khoom hnyav- cov haujlwm xws li cov cuab yeej mining. Qhov kev tsim qauv no tso cai rau cov cemented carbide tuaj yeem hloov kho rau kev ua haujlwm sib txawv, ua txhaum kev ua haujlwm ntawm ib qho - cov ntaub ntawv hlau.
Los ntawm kev pom ntawm daim ntawv thov, cov khoom siv cemented carbide tsis yog "cov cuab yeej nyuaj," tab sis yog ntau yam khoom siv uas suav nrog cov cuab yeej txiav, mining laum khoom, pwm inserts, hnav- cov khoom tiv taus, thiab ntau dua. Piv txwv li, cemented carbide rau CNC tej cuab yeej, los ntawm cov txheej txheem txheej txheem thiab muaj pes tsawg leeg optimization, muaj peev xwm tuav ib tug ntse txiav ntug thaum lub sij hawm siab - ceev txiav; mining pob cov hniav, los ntawm kev txhim kho kev cuam tshuam thiab hnav tsis kam tsim, tuaj yeem hloov mus rau qhov nyuaj load ib puag ncig ntawm cov mines sib sib zog nqus. Nws cov txiaj ntsig tseem ceeb nyob hauv kev txhim kho qhov ua tau zoo thiab lub neej ntev ntawm qhov kawg - siv cov cuab yeej siv thiab txo cov nqi khiav lag luam tag nrho los ntawm kev ua tau zoo ntawm cov khoom siv.
Raws li tus neeg sawv cev ntawm cov hmoov hlau metallurgy, kev npaj cov khoom siv cemented carbide yuav tsum muaj cov txheej txheem tseem ceeb xws li batching, pob milling, nias, thiab sintering. Kev tswj cov txheej txheem tsis ua haujlwm ntawm txhua kauj ruam ncaj qha cuam tshuam rau kev ua haujlwm kawg. Nrog rau kev nce qib hauv kev tsim khoom siv thev naus laus zis, nws thaj tsam kev ua haujlwm tau nthuav dav tas li, txuas ntxiv los ntawm cov cuab yeej siv niaj hnub mus rau cov chaw tawm tshiab xws li lub zog tshiab thiab cov khoom siv hluav taws xob, tsis tu ncua muab cov khoom txhawb nqa rau siab -kev tsim khoom. Nyob rau hauv luv luv, cemented carbide cov khoom yog ib tug sau ntawm "nyuaj thiab tawv" cov ntaub ntawv haumxeeb ua tiav los ntawm multiphase composites thiab txheej txheem innovation, ua lub hauv paus tseem ceeb rau kev ua haujlwm zoo ntawm kev lag luam niaj hnub.
