Lub tshuab txiav iav yog cov cuab yeej tshwj xeeb tsim los txiav iav; nws tsis yog ib qho riam phom, yog li nws cov txheej txheem tsis koom nrog 'txiav' hauv qhov kev xav ib txwm muaj. Hloov chaw, nws ua tib zoo siv lub nkig ntawm iav - uas tawg raws cov kab tsis muaj zog es tsis muaj zog tiv thaiv - los tsim kom muaj qhov tawg zoo heev ntawm cov iav. Qhov no tawg yog ces coj mus rau propagate nyob rau hauv lub xav tau kev taw qhia, yog li ua tiav ib tug huv so nyob rau hauv lub khob.
1.Qhov kev ua haujlwm tseem ceeb ntawm lub iav cutter: inducing brittle fracture.
Cov iav yog cov khoom siv nkig nrog kev ua haujlwm tsis zoo ntawm atomic thiab tsis muaj ductility. Nws qhov tsis zoo nyob rau hauv qhov tseeb tias ib zaug ib feeb tawg cov ntaub ntawv ntawm nws qhov chaw, nws yuav nthuav tawm sai heev nyob rau hauv sab nraud quab yuam. Kev ua haujlwm ntawm lub tshuab txiav iav yog siv cov khoom hnyav dua li iav los nias qhov khawb zoo heev rau hauv iav nto; Hauv qab ntawm qhov khawb no yog qhov ntse heev, tsim kom muaj kev ntxhov siab loj heev.
Thaum peb siv lub zog khoov rau lub khob raws li qhov khawb no, qhov kev ntxhov siab tseem ceeb ntawm lub hauv paus ntawm khawb. Cov kab nrib pleb ces nthuav tawm sai sai thiab huv si raws txoj hauv kev ntawm kev ntxhov siab ntau tshaj plaws - uas yog, khawb -zoo li rub qhib zip, thaum kawg faib lub khob hauv ob.
2.Qhov zais ntawm iav cutter hniav: hardness yog qhov tseem ceeb.
Lub hauv paus ntawm lub iav cutter nyob hauv nws cov hniav; cov khoom siv ntawm cov hniav txiav txim siab seb nws puas tuaj yeem tawm lub cim rau ntawm iav tawv.
Pob zeb diamond hniav muaj qhov siab tshaj plaws Mohs hardness ntsuam xyuas ntawm 10. Lawv muab qhov zoo tshaj plaws hardness, zoo heev txiav precision thiab ib tug ntev kev pab cuam lub neej, tab sis kuj yog cov kim tshaj plaws. Lawv feem ntau yog siv rau kev tshaj lij lossis siab - txiav txiav.
Carbide hniav, feem ntau ua los ntawm tungsten carbide, muaj Mohs hardness ntawm 8.5-9. Lawv muab cov txiaj ntsig zoo rau cov nyiaj thiab hnav zoo heev - tiv taus, ua rau lawv yog hom siv dav tshaj plaws niaj hnub no. Lawv tsim nyog rau kev siv hauv tsev niaj hnub thiab kev siv engineering.
Txawm hais tias pob zeb diamond los yog carbide hniav, lub hauv paus ntsiab lus tseem zoo ib yam: cov hniav yuav tsum nyuaj tshaj lub iav los tsim ib qho khawb ntawm nws qhov chaw.
