Deg roughness yog ib qho tseem ceeb parameter thaum nws los txiav txim qhov zoo ntawm ib tug nto. Ra (roughness nruab nrab) yog ib qho kev siv feem ntau uas ntsuas qhov nruab nrab qhov sib txawv ntawm qhov chaw los ntawm txoj kab nruab nrab. Txawm hais tias nws yuav zoo li qhov qis dua tus nqi Ra, qhov zoo dua ntawm qhov chaw, qhov tseeb yog qhov kev xaiv ntawm qhov tsim nyog ntawm qhov roughness nyob ntawm qhov kev thov ntawm qhov chaw.
Piv txwv li, ib qho chaw nrog Ra tus nqi tsawg dua 0.1 μm tej zaum yuav haum rau cov ntawv thov uas yuav tsum tau muaj qhov tseeb thiab raug, xws li hauv kev lag luam aerospace lossis hauv cov khoom siv kho mob. Ntawm qhov tod tes, qhov chaw nrog Ra qhov tseem ceeb ntawm 1-3 μm tej zaum yuav tsim nyog rau cov ntawv thov uas yuav tsum tau muaj qee qhov kev ntxhib los mos los pab txhawb kev ua kom zoo dua qub, xws li hauv kev lag luam tsheb lossis hauv kev pleev xim thiab txheej txheej.
Yog li ntawd, xaiv qhov tsim nyog Ra tus nqi rau ib qho chaw nyob ntawm qhov kev xav tau tshwj xeeb ntawm daim ntawv thov. Tus nqi siab dua Ra yuav tsim nyog rau qee daim ntawv thov thaum tus nqi qis dua yuav tsim nyog rau lwm tus.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov roughness ntawm qhov chaw tsis yog tib qho kev ntsuas uas cuam tshuam rau qhov zoo ntawm qhov chaw. Lwm yam tsis xws li waviness, flatness, thiab daim ntawv yuav tsum tau muab rau hauv kev txiav txim siab thaum ntsuas qhov zoo ntawm qhov chaw.
Hauv cov ntsiab lus, kev xaiv ntawm qhov tsim nyog roughness nyob ntawm qhov kev thov ntawm qhov chaw. Ra qhov tseem ceeb ib leeg yuav tsum tsis txhob siv los ua cov txheej txheem rau kev ntsuas qhov zoo. Los ntawm kev xav txog cov kev cai tshwj xeeb ntawm daim ntawv thov, peb tuaj yeem xaiv qhov tsim nyog ntawm qhov roughness uas yuav pab peb ua tiav cov txiaj ntsig xav tau.
Thaum koj tsis txaus siab txog kev xaiv Ra qhov tseem ceeb, kev sab laj nrog pab pawg kws tshaj lij engineers yog qhov kev xaiv txuag lub sijhawm.
Txawm hais tias nws yog qhov kev xaiv ntawm tus nqi deg roughness, lossis lwm yam teeb meem tsim khoom, peb tuaj yeem muab kev pabcuam kev pabcuam rau koj.
