Xim granite thiab kev xaiv cov pob zeb rau cov khoom siv precision industrial.

Hauv kev tsim kho thiab kev lag luam, granite siv dav vim nws qhov nyuaj, qhov ceev, tiv taus kua qaub thiab alkali, thiab tiv taus huab cua. Cov hauv qab no yog kev tshuaj xyuas ntxaws ntxaws rau koj txog seb cov xim ntawm granite puas cuam tshuam rau nws qhov ceev thiab yuav ua li cas xaiv granite ruaj khov dua hauv kev lag luam ntawm cov khoom siv precision.
Kev sib raug zoo ntawm cov xim thiab qhov ceev ntawm granite
Granite feem ntau yog ua los ntawm cov zaub mov xws li quartz, feldspar thiab mica, thiab nws cov xim nyob ntawm seb nws muaj hom thiab ntau npaum li cas. Los ntawm qhov pom ntawm qhov ceev, muaj qee qhov kev sib txuas ntawm xim thiab qhov ceev, tab sis nws tsis yog kev sib raug zoo ncaj qha.

 

Qhov sib txawv ntawm cov khoom siv hauv cov zaub mov: Xim daj granite, xws li greyish-dawb thiab nqaij-liab, feem ntau nplua nuj nyob rau hauv quartz thiab feldspar. Ob lub minerals no muaj qhov ceev ceev thiab ruaj khov. Qhov ceev ntawm quartz yog txij li 2.6 txog 2.7g / cm³, thaum feldspar yog txij li 2.5 txog 2.8g / cm³ nyob ntawm hom. Qhov muaj ntau ntawm cov minerals no ua rau muaj kev nce siab hauv qhov ceev ntawm cov granite xim sib dua. Granite tsaus nti, xws li dub thiab ntsuab, feem ntau muaj cov hlau thiab magnesium ntau nrog rau cov minerals tsaus nti xws li amphibole thiab biotite. Qhov ceev ntawm amphibole yog kwv yees li 3.0-3.4g / cm³, thiab biotite yog kwv yees li 2.7-3.1g / cm³. Txawm li cas los xij, thaum granite tsaus nti muaj ntau cov hlau hnyav (xws li hlau thiab manganese), nws qhov ceev yuav nce ntxiv.

 

Qib ntawm kev siv lead ua thiab kev cuam tshuam ntawm cov qauv: Xim qee zaum tuaj yeem qhia txog qhov sib txawv ntawm qib kev siv lead ua thiab cov qauv ntawm granite. Granite nrog qib siab ntawm kev siv lead ua thiab cov qauv ntom ntom muaj xim sib xws thiab ruaj khov, thiab nws qhov ceev kuj siab heev. Qhov no yog vim tias cov khoom me me tau teeb tsa ze thiab muaj qhov loj loj ib chav tsev. Granite nrog kev siv lead ua tsis zoo thiab cov qauv xoob yuav muaj cov xim tsis sib xws thiab tsis sib xws, ntau qhov khoob sab hauv, thiab qhov ceev qis.
Kev xaiv granite hauv thaj chaw ntawm cov khoom siv precision industrial
Hauv kev lag luam ntawm cov khoom siv precision industrial, qhov yuav tsum tau ua kom ruaj khov rau granite yog siab heev. Feem ntau, cov granite tsim nyog raug xaiv los ntawm kev xav txog ntau yam:

Cov khoom siv thiab cov qauv ntawm cov pob zeb: Granite uas muaj cov ntsiab lus siab thiab sib npaug ntawm quartz thiab feldspar yog qhov zoo dua. Hom granite no muaj cov qauv sab hauv ruaj khov, uas tuaj yeem txo qhov deformation los ntawm kev hloov pauv ntawm kev ntxhov siab sab hauv thiab ua kom cov khoom siv ua haujlwm ruaj khov mus sij hawm ntev. Lub caij no, granite nrog qib siab ntawm crystallization, cov khoom me me thiab sib npaug, thiab cov qauv ntom yog qhov kev xaiv zoo dua. Thaum siv mus sij hawm ntev thiab siv zog, nws tuaj yeem tswj tau qhov tseeb zoo dua thiab txo qhov cuam tshuam ntawm nws tus kheej cov qauv hloov pauv rau qhov tseeb ntawm cov khoom siv.

Cov ntsuas kev ua tau zoo ntawm lub cev: Granite yuav tsum muaj qhov nqus dej tsawg, feem ntau tsawg dua 0.5%, kom tiv thaiv cov teeb meem xws li kev nthuav dav thiab kev txo qis zog los ntawm kev nqus dej, uas yuav cuam tshuam rau qhov tseeb ntawm cov khoom siv. Tus coefficient ntawm thermal expansion yuav tsum qis. Qhov zoo tshaj plaws, nws yuav tsum tsawg dua 8 × 10⁻⁶ / ℃ kom txo cov kev hloov pauv ntawm qhov loj me los ntawm kev hloov pauv kub. Tsis tas li ntawd, lub zog compressive yuav tsum siab, feem ntau ntau dua 150MPa, kom ntseeg tau tias nws tuaj yeem tiv taus ntau yam zog thaum lub sijhawm ua haujlwm ntawm cov khoom siv.
Cov hom granite uas pom zoo: Jinan Green Granite, Indian Black, South African Black thiab lwm yam granite dub, uas feem ntau yog xim tsaus nti, ntom ntom, muaj cov coefficient qis ntawm thermal expansion thiab zoo hnav tsis kam, thiab tsim nyog rau cov hauv paus ntawm cov khoom siv tshuaj xyuas qhov muag nrog cov kev xav tau siab heev rau kev ua kom raug thiab ruaj khov. Sesame dawb granite, nrog rau xim sib dua, cov khoom siv hauv av sib xws, thiab qhov nyuaj thiab lub zog siab, yog siv dav hauv cov khoom siv hluav taws xob thiab tuaj yeem ua tau raws li qhov xav tau ntawm kev ua haujlwm siab thiab kev ua haujlwm ruaj khov ntev ntawm cov khoom siv.

Xaus lus, txawm hais tias muaj qee qhov kev sib raug zoo ntawm cov xim thiab qhov ceev ntawm granite, thaum xaiv granite hauv thaj chaw ntawm cov khoom siv precision industrial, nws yog qhov tsim nyog los xav txog ntau yam xws li cov khoom siv hauv av, cov qauv, thiab cov khoom siv lub cev kom ntseeg tau tias muaj qhov tseeb siab thiab ruaj khov ntawm cov khoom siv.