Granite yog cov khoom siv feem ntau hauv PCB drilling thiab milling tshuab. Nws lub siab tawv, thermal stability, thiab qis thermal expansion coefficient ua rau nws yog qhov kev xaiv zoo tshaj plaws rau high precision thiab high-speed machining. Lub coefficient ntawm thermal expansion ntawm granite yog ib qho cuab yeej tseem ceeb thaum nws los txog rau precision machining, raws li nws txiav txim siab npaum li cas ntawm cov khoom expands los yog cog lus nrog kev hloov nyob rau hauv kub.
Lub coefficient ntawm thermal expansion (CTE) yog qhov piv ntawm qhov kev hloov ntawm qhov loj ntawm cov khoom rau qhov kub thiab txias. CTE ntawm granite yog qhov tsawg thaum piv rau lwm cov ntaub ntawv xws li hlau, yas, thiab ceramics. CTE ntawm granite feem ntau yog 4.5 x 10-6/degree, uas txhais tau hais tias rau txhua txhua ib-degree Celsius nce nyob rau hauv qhov kub thiab txias, cov khoom nthuav los ntawm 4.5 x 10-6 units.
Qhov qis CTE ntawm granite ua rau nws xaiv cov khoom zoo nkauj rau kev ua haujlwm siab. Thaum raug kub hloov pauv, granite ntsiab lus hauv PCB drilling thiab milling tshuab nthuav dav tsawg. Qhov no txhais tau hais tias qhov seem stability ntawm lub tshuab yog tswj, uas ua rau siab precision thiab raug nyob rau hauv cov txheej txheem machining. Tsis tas li ntawd, granite muaj cov khoom damping zoo heev uas ua kom muaj kev vibration tsawg heev thaum lub tshuab ua haujlwm, ua rau lub tshuab ua kom zoo dua.
Granite qhov qis CTE kuj ua rau nws yog ib qho khoom siv zoo heev rau kev siv nyob rau hauv ib puag ncig tej yam kev mob uas muaj qhov kub thiab txias. Piv txwv li, nyob rau hauv ib cheeb tsam ntawm lub ntiaj teb no nrog rau lub caij ntuj sov variations, kev siv cov granite ntsiab nyob rau hauv PCB drilling thiab milling tshuab xyuas kom meej tias cov khoom siv yog tswj, thiab lub tshuab ua hauj lwm nrog siab repeatability.
Hauv kev xaus, cov coefficient ntawm thermal expansion ntawm granite ntsiab nyob rau hauv PCB drilling thiab milling tshuab yog 4.5 x 10-6/degree . Qhov qis coefficient no ua rau muaj kev nthuav dav / kev sib cog lus ntawm cov khoom, siab precision, thiab raug thaum lub sij hawm machining, thiab zoo heev damping zog uas txo kev vibration. Kev siv cov granite hauv cov tshuab xws li ua kom ntseeg tau tias cov khoom siv tau raug tswj xyuas, thiab lub tshuab ua haujlwm nrog kev rov ua haujlwm siab txawm tias hloov pauv kub.
