Cov txheej txheem kev teeb tsa thiab cov qauv ntawm granite mechanical base.

 

Granite tau ntev los lees paub tias yog cov khoom siv tseem ceeb rau cov hauv paus kho tshuab vim nws cov khoom tshwj xeeb, suav nrog qhov ceev ceev, kev ruaj khov, thiab kev tiv taus kev nthuav dav thermal. Kev nkag siab txog cov txheej txheem kev teeb tsa thiab cov qauv cuam tshuam nrog cov hauv paus kho tshuab granite yog qhov tseem ceeb rau cov engineers thiab cov chaw tsim khoom uas vam khom qhov tseeb thiab kev ruaj khov hauv lawv daim ntawv thov.

Ib qho ntawm cov yam ntxwv tseem ceeb ntawm cov khoom siv granite yog nws lub zog compressive, uas feem ntau yog txij li 100 txog 300 MPa. Lub zog compressive siab no ua kom granite tuaj yeem tiv taus cov khoom hnyav yam tsis muaj kev hloov pauv, ua rau nws zoo tagnrho rau kev txhawb nqa cov tshuab hnyav thiab cov khoom siv. Tsis tas li ntawd, granite muaj cov coefficients thermal expansion qis, feem ntau nyob ib puag ncig 5 txog 7 x 10 ^ -6 / ° C, uas txo qis qhov kev hloov pauv ntawm qhov loj me vim qhov kub thiab txias hloov pauv, ua kom muaj kev ua tau zoo tas li hauv ntau qhov chaw.

Qhov tiaj tiaj ntawm qhov chaw yog lwm tus qauv tseem ceeb rau cov khoom siv granite mechanical bases. Qhov kev kam rau siab ntawm qhov tiaj tiaj feem ntau teev nyob rau hauv micrometers, nrog rau cov ntawv thov siab uas xav tau kev kam rau siab li 0.005 hli ib 'meter'. Qib kev raug no yog qhov tseem ceeb rau cov ntawv thov xws li cov tshuab ntsuas kev sib koom tes (CMMs) thiab cov khoom siv kho qhov muag, qhov twg txawm tias qhov kev hloov pauv me me tuaj yeem ua rau muaj qhov yuam kev loj heev.

Ntxiv mus, qhov ceev ntawm granite feem ntau yog txij li 2.63 txog 2.75 g / cm³, uas ua rau nws ruaj khov thiab txo qhov kev co. Cov yam ntxwv no yog qhov tseem ceeb hauv kev txo qhov cuam tshuam ntawm kev co sab nraud, yog li ua kom qhov tseeb ntawm cov cuab yeej rhiab heev uas tau teeb tsa rau ntawm cov hauv paus granite.

Xaus lus, cov txheej txheem kev siv tshuab thiab cov qauv ntawm cov khoom siv granite ua lub luag haujlwm tseem ceeb hauv lawv daim ntawv thov thoob plaws ntau yam lag luam. Los ntawm kev ua raws li cov lus qhia no, cov chaw tsim khoom tuaj yeem ua kom ntseeg tau tias lawv cov khoom siv muaj kev ntseeg siab thiab kev ua tau zoo, thaum kawg ua rau kev ua haujlwm zoo dua thiab kev ua haujlwm raug hauv cov txheej txheem tsim khoom. Raws li thev naus laus zis nce qib, qhov kev thov rau cov khoom siv granite zoo yuav txuas ntxiv loj hlob, qhia txog qhov tseem ceeb ntawm kev nkag siab txog cov qauv kev siv tshuab no.