Magawo aukadaulo ndi miyezo ya maziko a granite.

 

Granite yakhala ikudziwika kwa nthawi yayitali ngati chinthu chofunika kwambiri pa maziko a makina chifukwa cha makhalidwe ake apadera, kuphatikizapo kukhuthala kwambiri, kulimba, komanso kukana kutentha kwambiri. Kumvetsetsa magawo aukadaulo ndi miyezo yogwirizana ndi maziko a makina a granite ndikofunikira kwambiri kwa mainjiniya ndi opanga omwe amadalira kulondola ndi kulimba pantchito zawo.

Chimodzi mwa zinthu zazikulu zaukadaulo wa maziko a granite ndi mphamvu yake yokakamiza, yomwe nthawi zambiri imakhala pakati pa 100 ndi 300 MPa. Mphamvu yokakamiza kwambiri iyi imatsimikizira kuti granite imatha kupirira katundu wolemera popanda kusintha, zomwe zimapangitsa kuti ikhale yoyenera kuthandizira makina ndi zida zolemera. Kuphatikiza apo, granite imawonetsa ma coefficients otsika a kutentha, nthawi zambiri pafupifupi 5 mpaka 7 x 10^-6 /°C, zomwe zimachepetsa kusintha kwa miyeso chifukwa cha kusinthasintha kwa kutentha, kuonetsetsa kuti magwiridwe antchito nthawi zonse m'malo osiyanasiyana.

Kusalala pamwamba ndi muyezo wina wofunikira kwambiri pa maziko a granite. Kusalala kwa kusalala nthawi zambiri kumatchulidwa mu ma micrometer, ndi ntchito zolondola kwambiri zomwe zimafuna kulekerera kolimba ngati 0.005 mm pa mita imodzi. Mlingo wolondola uwu ndi wofunikira pa ntchito monga makina oyezera ogwirizana (CMMs) ndi zida zowunikira, komwe ngakhale kupotoka pang'ono kungayambitse zolakwika zazikulu pakuyeza.

Komanso, kuchuluka kwa granite nthawi zambiri kumakhala pakati pa 2.63 ndi 2.75 g/cm³, zomwe zimathandiza kuti ikhale yolimba komanso yochepetsera kugwedezeka. Makhalidwe amenewa ndi ofunikira kwambiri pochepetsa kugwedezeka kwa kunja, motero kukulitsa kulondola kwa zida zomvera zomwe zimayikidwa pa maziko a granite.

Pomaliza, magawo aukadaulo ndi miyezo ya maziko amakina a granite amachita gawo lofunikira kwambiri pakugwiritsa ntchito kwawo m'mafakitale osiyanasiyana. Mwa kutsatira izi, opanga amatha kutsimikizira kudalirika ndi magwiridwe antchito a zida zawo, zomwe pamapeto pake zimapangitsa kuti magwiridwe antchito azikhala bwino komanso molondola pakupanga. Pamene ukadaulo ukupita patsogolo, kufunikira kwa maziko apamwamba amakina a granite kudzapitirira kukula, zomwe zikugogomezera kufunika komvetsetsa miyezo iyi yaukadaulo.