Granite cov tshuab sib xyaw yog siv dav hauv qhov tseeb ntawm kev sib xyaw nrog rau lawv qhov kev ruaj khov ruaj khov thiab hnav tsis kam. Txhawm rau kom ntseeg tau kev ua tau zoo thiab kev ncua sij hawm, cov cheebtsam no yuav tsum ua kom tau raws ntau cov qauv txheej txheem. Hauv qab no yog cov ntsiab lus ntawm cov kev xav tau tseem ceeb:
1. Kuas Tsim Tsim Kom Muaj Siab rau high- precision qib
Rau qib 000 thiab qib 00 granite cov khoom sib xyaw, nws feem ntau pom zoo kom tsis txhob suav nrog cov leeg nqa kom tsis txhob cuam tshuam dab tsi.
2. Kev kho dua tshiab tsis txaus ntseeg ntawm tsis-}} ua haujlwm sib luag
Cov me me lossis dents nyob ntawm tsis -} Cov chaw ua haujlwm yuav raug kho, muab lawv tsis cuam tshuam rau lawv.
3. Cov Khoom Siv Tshwj Xeeb
Granite qhov chaw yuav tsum yog tsim los ntawm nplua - nplej, siab {{}}} cov ntaub ntawv me xws li Gabbro, dej hiav txwv, lossis cov xim av. Cov ntaub ntawv uas siv tau yuav tsum ua tau raws li cov qauv hauv qab no:
Cov ntsiab lus: tsawg dua lossis sib npaug rau 5%
Elastic Modulus: ntau dua lossis sib npaug zos rau 0.6 × 10⁴ kg / cm
Dej nqus dej: tsawg dua los yog sib npaug rau 0.25%
Lub Hardness Ntshiab:> 70 hs
4. Nto Roughnence Yuav Tsum Tau
Ua Haujlwm Roughness (RA): 0.32 - 0.63 μm
Sab saum npoo roughness: tsawg dua los yog sib npaug rau 10 μm
5. Florness kam kam
Lub tiaj tiaj ntawm cov haujlwm ua haujlwm yuav tsum ua kom haum raws qib raws li txhais tau nyob rau hauv cov txheej txheem muaj feem xyuam (xa mus rau rooj 1 hauv cov ntaub ntawv cov txheej txheem).
6. Kev txiav txim siab zam
Cov sab chaw yuav tsum sib txuas rau qhov chaw ua haujlwm raws li Qib 12 tus qauv tau teev nyob hauv GB / T1184.
Cov sab uas nyob ib sab yuav tsum tau ua raws li cov tib txoj kev ntsuas qib.
7. Nto yoj strongiation
Thaum kuaj xyuas cov flatness siv cov kab pheeb ces kaum lossis kev sib chaws, cov cua sib txawv, cov cua sib txawv raws li cov kev txwv ua haujlwm (saib cov lus 2).
8. Load {- bearing muaj peev xwm thiab deflection
Qhov chaw nruab nrab ntawm cov granite tivthaiv nto yuav tsum tau txhawb nqa cov khoom siv tsis pub dhau hauv cov ntau txhais. Qhov siab tshaj plaws uas tau tso cai deflection nyob rau hauv rated loads tau teev nyob rau hauv Table 3 ntawm tus qauv.
9. Nto Qhov Txwv Nrov
Cov khoom ua haujlwm yuav tsum muaj qhov tsis xws luag uas yuav cuam tshuam tsis zoo tsos lossis kev ua tau zoo, suav nrog:
Xuab zeb qhov
CUA npuas
Cov kab nrib pleb lossis kev suav nrog
Shrinkage kab noj hniav
Khawb, dents, lossis xeb cim
10. Threated Qhov thiab Grooves
Rau qib 0 thiab qib 1, txhua cov xov threaded lossis grooves qhov yuav tsum tau rov qab ua si thiab tsis prottrude saum toj no qhov chaw ua haujlwm.