1. Kev kub ceev steel
Kev kub ceev steel hais txog lub platform hlau ua haujlwm siab hlau uas muaj ntau dua tungsten, chromium, aluminium thiab lwm yam hlau alloy, feem ntau hu ua steel ntug lossis dawb hlau.
2. Cemented carbide
High hnav tsis kam thiab oxidation tsis kam; Tab sis lub zog khoov thiab cuam tshuam toughness yog tsawg. Nws yog tsim rau kev ua cov pa roj carbon steel, Taiwan steel thiab lwm yam ntaub ntawv yas.
3. Tshuab cuab yeej txheej cov khoom siv
Cemented carbide los yog high-speed steel cov cuab yeej yog coated nrog refractory hlau tebchaw nrog zoo hnav tsis kam ntawm lawv qhov chaw los ntawm tshuaj los yog lub cev txoj kev. Nws cov yam ntxwv yog: nws tuaj yeem tsis tsuas yog txhim kho qhov hnav tsis kam ntawm cov khoom siv, tab sis kuj txo nws cov toughness.
4. Superhard cov khoom siv
(1) Cov yam ntxwv tseem ceeb ntawm cov ntaub ntawv ceramic yog: lub hardness yog 80hra, zoo hnav tsis kam thiab kub kub tsis kam; Siab brittleness, tsis tshua muaj zog, tsis tuaj yeem nqa qhov cuam tshuam. Haum rau kev zoo tig thiab semi zoo tig, nws yog ib qho ntawm cov khoom siv zoo tshaj plaws los txhim kho cov khoom zoo thiab kev tsim khoom.
(2) Pob zeb diamond yog muab faib ua tej pob zeb diamond thiab dag pob zeb diamond. Ntuj pob zeb diamond tsis tshua muaj, yog li nws kim heev thiab tsis tshua siv. Synthetic pob zeb diamond yog hloov los ntawm graphite nyob rau hauv kev kub siab thiab kub. Nws tus nqi kuj tsawg thiab nws tau siv dav. Nws cov yam ntxwv yog: lub hardness tsis tshua muaj siab, mus txog 10000hv, hnav tsis kam yog qhov zoo heev, thiab kev sib txhuam coefficient yog qhov tsawg tshaj plaws ntawm tag nrho cov khoom siv; Tab sis nws muaj qhov tsis zoo thaum tshav kub kub, tsis muaj zog dabtsi yog khoov thiab siab brittleness.
(3) Cubic boron nitride cubic boron nitride yog hloov los ntawm cov mos mos cubic boron nitride los ntawm kev ntxiv catalyst nyob rau hauv lub siab thiab kub. Nws cov yam ntxwv yog: hardness yog 8000 ~ 9000hv thib ob rau pob zeb diamond, zoo hnav tsis kam, siab kub tsis kam thiab tsis tshua muaj kev sib txhuam coefficient. Cubic boron nitride feem ntau ua cov hlau thiab cam khwb cia hlau nyob rau hauv qhuav tej yam kev mob.
