1. Mechanical khoom sib piv
Cov khoom siv tshuab feem ntau yog xa mus rau qhov khoov lub zog, toughness, hardness thiab lwm yam tsis zoo ntawm cov cuab yeej thiab cov khoom ua haujlwm. Lub zog khoov ntawm ntau yam khoom siv sib txawv, thiab lawv tau npaj los ntawm qhov muaj zog mus rau qhov tsis muaj zog, nyob rau hauv kev txiav txim: high-speed steel, cemented carbide, ceramics, pob zeb diamond thiab cubic boron nitride cov cuab yeej. Nyob rau hauv cov nqe lus ntawm toughness, los ntawm siab mus rau qis, lawv yog high-ceev steel, cemented carbide, cubic boron nitride, pob zeb diamond thiab ceramic cov cuab yeej. Raws li qhov nyuaj ntawm qhov siab mus rau qis, lawv yog cov cuab yeej pob zeb diamond, cov cuab yeej cubic boron nitride, cov cuab yeej ceramic, cemented carbide thiab high-speed steel.
Tsuas yog qhov sib txawv ntawm cov khoom siv kho tshuab tuaj yeem ua rau lub cuab yeej hloov mus rau kev ua haujlwm ntawm cov khoom siv sib txawv. Lub hardness ntawm lub cuab yeej yog siab dua li ntawm lub workpiece, yog li cov khoom siv nrog cov hardness siab yuav tsum tau ua tiav nrog cov cuab yeej hardness siab. Feem ntau, qhov siab dua qhov hardness ntawm cov khoom siv, ntau dua qhov hnav tsis kam, tab sis lub zog thiab tawv yuav cuam tshuam loj heev. Cov cuab yeej nrog siab hardness thiab siab hnav tsis kam yuav raug npaj rau kev ua haujlwm ntxhib, thaum cov cuab yeej uas tsis tshua muaj zog yuav siv rau kev ua tiav.
2. Lub cev ua tau zoo sib xws
Lub cev lub cev tsuas yog xa mus rau cov thermal conductivity, melting point, thermal expansion thiab lwm yam tsis muaj feem xyuam ntawm cov ntaub ntawv. Lub thermal conductivity ntawm lub cuab yeej yuav tsum tau ntxiv rau lub workpiece. Thaum ua cov khoom ua haujlwm nrog cov thermal conductivity tsis zoo, cov cuab yeej muaj zog thermal conductivity yuav tsum tau siv, kom cov cua sov tuaj yeem muab tau raws sijhawm thiab qhov tseeb qhov tseeb ntawm cov cuab yeej thiab cov khoom ua haujlwm tuaj yeem khaws cia.
Ntau yam cuab yeej cuab yeej yog qeb los ntawm siab mus rau qis nyob rau hauv cov nqe lus ntawm tshav kub tsis kam, uas yog cubic boron nitride, ceramics, titanium carbide raws li cemented carbide, WC raws li ultra-fine grain cemented carbide, pob zeb diamond thiab HSS. Nyob rau hauv kev txiav txim ntawm thermal conductivity los ntawm siab mus rau qis: PCD, cubic boron nitride, WC raws li cemented carbide, titanium carbide raws li cemented carbide. Raws li qhov kev txiav txim ntawm thermal expansion coefficient: HSS, WC raws li cemented carbide, titanium carbide raws li cemented carbide, A1203 raws ceramics, PCBN, Si3N4 raws ceramics thiab PCD. Nyob rau hauv kev txiav txim ntawm seismic kev ua tau zoo: HSS, WC raws li cemented carbide, Si3N4 raws ceramics, cubic boron nitride, PCD, titanium carbide raws li cemented carbide thiab A1203 raws ceramics.
3. Cov khoom siv tshuaj lom neeg sib txuam
Chemical zog yog cov tshuaj affinity ntawm lub cuab tam thiab lub workpiece, uas yuav ua rau cov tshuaj tiv thaiv, diffusion thiab dissolution. Yog tias cov xwm txheej no tshwm sim hauv cov txheej txheem ua, nws qhia tau tias cov cuab yeej thiab cov khoom siv tsis sib xws.