Kodi Zolemba Pamitu ya Bolt Zimatanthauza Chiyani?

Gawo lodziwika bwino la bawuti lomwe likupezeka pano ndi giredi ya metric yokhazikitsidwa ndi ISO, yomwe imakhala ndi manambala awiri olekanitsidwa ndi kadontho ndipo nthawi zambiri amalembedwa pamwamba kapena mbali ya mutu wa bawuti kapena nati. Zodziwika kwambiri ndi 8.8, 10.9 ndi 12.9.

Chulukitsani nambala isanafike pa decimal point ndi 100 kuti mupereke mphamvu yocheperako ya bawuti. Nambala pambuyo pa mfundo ya decimal yochulukitsidwa ndi 10 imapereka mphamvu yokwanira yokolola poyerekeza ndi mphamvu yocheperako. Mwachitsanzo, mphamvu yamakokedwe ya giredi 8.8 ndi pafupifupi 800MPa, ndipo mphamvu zokolola zimakhala pafupifupi 800 * 80% = 640MPa. Mwinanso mwawonapo ma logo awiri pansipa.

Ichi ndi chizindikiro cha ma bolts osapanga dzimbiri kapena mtedza, A2 amayimira304 chitsulo chosapanga dzimbirindipo A4 imayimira 316 chitsulo chosapanga dzimbiri. Nambala yotsatirayi ikuyimira mphamvu yamphamvu ndipo idzasiyana malinga ndi mphamvu ya bawuti. Mwachitsanzo, 70 amatanthauza kuti mphamvu yamakokedwe ndi yofanana ndi 700MPa zitsulo zosapanga dzimbiri. Zitsulo zonse zosapanga dzimbiri zili ndi kukana kwa dzimbiri, 316 ndi yabwino kuposa 304, ndipo ndi yoyenera malo okhala ndi zofunikira zapamwamba.

Mungakhalebe ndi mafunso, chifukwa chiyani palibe zizindikiro pamitu ina ya bawuti? Izi nthawi zambiri zimatanthawuza kuti mlingo wa ntchito wa bawuti ndi wotsika kwambiri, monga mlingo 4.8 kapena mlingo 5.8, umene nthawi zambiri sudziwika.

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