1. Cov khoom siv dav siv rau kev txiav cov khoom txiav
Cov khoom siv feem ntau siv rau cov cuab yeej txiav yog cov cemented carbide thiab high-speed steel. Nyob rau tib lub sijhawm, cov ntaub ntawv superhard ceramic, cubic boron nitride, pob zeb diamond thiab lwm yam yuav tau siv dav. Nyob rau hauv xyoo tas los no, txheej tshuab tau siv dav hauv kev ua thiab ua tiav cov txiaj ntsig zoo.
(1) Kev kub ceev steel
Kev kub ceev steel feem ntau yog hais txog cov hlau alloy ntxiv nrog ntau dua tungsten, chromium, molybdenum, vanadium thiab lwm yam hlau alloy. Ntawm lawv, W18Cr4V tau siv dav. Cov hlau no muaj cov khoom zoo thiab tuaj yeem tsim ntau yam cuab yeej txiav. Nws yog dav siv nyob rau hauv Suav teb. Tsis tas li ntawd, qee cov khoom siv high-speed steel tau tsim rau qee qhov tshwj xeeb uas yuav tsum tau ua.
(2) Cemented carbide
Cemented carbide yog ib yam ntawm cov cuab yeej ua tau zoo, uas yog tsim los ntawm cov hlau carbides thiab hlau binders nrog siab hardness thiab melting point los ntawm sintering nyob rau hauv txoj kev ntawm hmoov metallurgy. Cov khoom siv cemented carbide feem ntau suav nrog tungsten cobalt, tungsten cobalt titanium thiab cov cemented carbide. Cov qauv ISO sib raug yog k, P thiab M cemented carbide.
(3) Superhard khoom
Txoj kev loj hlob ntawm machining thev naus laus zis tau coj mus rau qhov tshwm sim ntawm ntau yam khoom siv superhard, xws li ceramics, cubic boron nitride, polycrystalline cubic boron nitride thiab pob zeb diamond. Cov khoom siv cuab yeej no feem ntau yog siv rau lub sijhawm tshwj xeeb, xws li kev txiav ceev, txiav kom qhuav, txiav nyuaj rau cov khoom siv tshuab, tig es tsis txhob sib tsoo, thiab lwm yam. Tus nqi ntawm cov ntaub ntawv no yog siab dua tus nqi. Tsis tas li ntawd, cov kev txiav thiab cov txheej txheem tsis yooj yim rau tus tswv, thiab muaj qee qhov yuav tsum tau ua rau lub rigidity thiab txiav ceev ntawm cov cuab yeej siv tshuab thiab txawm tias cov cuab yeej sib tsoo, uas tsis tau siv dav hauv cov pa machining.
(4) Cov cuab yeej txheej
Txheej yog ib txoj hauv kev tseem ceeb los txhim kho cov cuab yeej ua haujlwm. Nws yog siv los ntawm cov cuab yeej nto thiab tau siv dav hauv xyoo tas los no. Cov ntaub ntawv txheej feem ntau siv hauv kev tsim khoom suav nrog titanium carbide, titanium nitride thiab aluminium oxide. Ib txheej txheej txheej txheej yog siv tsis tshua muaj, thiab siv tshuab ntawm ob txheej txheej txheej los yog peb txheej txheej txheej feem ntau tau txais.
2. Kev xaiv cov khoom siv txiav
(1) Cov cuab yeej nyiam rau NC machining yog lub tshuab clamp indexable cuab tam. Yog li, kev xaiv cov cuab yeej siv feem ntau yog cemented carbide cov ntaub ntawv. Yog tias ua tau, cov hniav coated yuav raug xaiv ntau li ntau tau.
(2) Kev kub ceev steel cov cuab yeej tuaj yeem xaiv tau thaum nws los txog rau cov cuab yeej sib tsoo tus kheej.
(3) Rau cov neeg xav tau kev pab tshwj xeeb, cov khoom siv superhard tuaj yeem xaiv tau.