Feem ntau cov neeg ntaus nqi hlau matrix composite cov ntaub ntawv raws li "cov ntaub ntawv nyuaj-rau-machine". Qhov tseeb, lawv tsim cov chips luv luv thaum ua, thiab cov matrix feem ntau yog aluminium alloy. Lub txiav kub yog tsawg, yog li lub machinability zoo heev; Qhov laj thawj tseem ceeb yog tias cov khoom ntxiv rau hauv nws tau txhawb nqa Lub hardness ntawm cov khoom yog siab heev, xws li cov hardness ntawm SiC yog siab li 3000-3500HV. Cov khoom tawv tawv tau muab faib rau hauv matrix, thiab zoo li cov khoom abrasive nyob rau hauv lub log sib tsoo, lawv yuav khawb thiab cuam tshuam rau kev txiav ntug ntawm lub cuab yeej, ua rau lub txiav ntug hnav sai heev. Qhov siab dua ntawm cov khoom tawv tawv, qhov loj dua qhov loj ntawm cov khoom, thiab cov khoom siv ntau dua, cov cuab yeej hnav sai dua. Yog li ntawd, machining nrog cov pa carbide cov cuab yeej yog qhov nyuaj thiab lub cuab yeej lub neej yog tsawg los yog siv tsis tau txhua.
Cov kws tshawb fawb Nyij Pooj tau siv cov cuab yeej cemented carbide (hom K10) tig A390 hypereutectic silicon-aluminium alloy thiab cam khwb cia hlau nrog cov ntsiab lus silicon ntawm 16 feem pua -18 feem pua . Nws tsis ua haujlwm vim qhov hnyav hnyav hnyav, thiab nws lub neej tsawg dua 1/3 ntawm kev txiav cov hlau. Hloov cov khoom txiav nrog SiC whisker reinforced aluminium alloy ua rau cov cuab yeej hnav sai dua li txiav high-silicon aluminium alloys. Xws li machining nrog coated carbide cov cuab yeej, cov khoom nyuaj hauv cov khoom sib xyaw tseem yuav hnav los ntawm cov txheej txheem sai thiab nthuav dav mus rau hauv cov carbide matrix thiab ua rau lub cuab yeej ua tsis tiav. Pob zeb diamond yog cov khoom siv paub zoo tshaj plaws hauv ntiaj teb, thiab nws qhov kev siv tiag tiag tau ua pov thawj tias nws yog cov khoom siv zoo tshaj plaws rau kev ua cov hlau matrix composites. Siv cov pob zeb diamond los ua cov ntaub ntawv hlau matrix sib xyaw, kev txiav ceev tuaj yeem ncav cuag 800 ~ 1000m / min, lub cuab yeej lub neej tuaj yeem ua tau ob peb zaug lossis ntau zaus ntau dua li cov cemented carbide, thiab qhov roughness tus nqi yog me me, uas tuaj yeem ncav cuag. Ra0.025-0.012µm . Qhov no yog vim hais tias pob zeb diamond tsis tsuas yog muaj siab hardness (txog 10000HV), zoo hnav tsis kam, thiab muaj peev xwm tswj tau ib tug ntse txiav ntug ntev, lub ntug roughness tus nqi yog me me, thiab cov kev sib txhuam coefficient yog tsawg, zoo adhesion kuj, siab. thermal conductivity, txiav Nws tsis yooj yim rau lo rau lub cuab yeej thiab tsim cov ntug tsim, yog li qhov zoo ntawm lub tshuab yog zoo dua li lwm yam cuab yeej.