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Motoci, sassa na inji, da dai sauransu suna da buƙatu masu yawa akan daidaito da ƙarewar bututun ƙarfe.Masu amfani da madaidaicin bututun ƙarfe ba kawai masu amfani waɗanda ke da babban buƙatu don daidaito da santsi ba.Saboda madaidaicin madaidaicin bututu mai haske yana da girma kuma ana iya kiyaye haƙuri a wayoyi 2--8, yawancin masu amfani da injin za su adana aiki, kayan aiki, da asarar lokaci.Bututun ƙarfe maras sumul ko zagaye karfe ana canza su sannu a hankali zuwa ainihin bututu masu haske.
Daya:Sanin sumul haske bututu m diamita, ƙayyadaddun, bango kauri don iya ɗaukar da matsa lamba lissafi Hanyar (da tensile ƙarfi na daban-daban karfe bututu kayan ne daban-daban)
Matsa lamba = (kaurin bango * 2 * ƙarfe bututun abu mai ƙarfi) / (diamita na waje * coefficient)
Biyu: Sanin sumul bututu m diamita na sumul karfe bututu da lissafi Hanyar kauri a karkashin matsin:
Kaurin bango = (matsi * diamita na waje * coefficient) / (2 * ƙarfin juzu'in bututun ƙarfe)
Na uku: Hanyar bayyana ma'aunin matsi na bututu mai haske mara sumul:
Karfe bututu matsa lamba P <7Mpa coefficient S=8
7
Karfe bututu matsa lamba P> 17.5 coefficient S=4
| Alamar | Matsayin Bayarwa | |||||
| Cold Aiki/Tsauri (y) | Cold Aiki / taushi (r) | Taimakon Danniya (t) | ||||
| Ab≥/Mpa | 5≥(%) | Ab≥/Mpa | 5≥(%) | Ab≥/Mpa | 5≥(%) | |
| 10 | 410 | 6 | 375 | 10 | 335 | 12 |
| 20 | 510 | 5 | 450 | 8 | 430 | 10 |
| 30 | 590 | 4 | 550 | 6 | 520 | 8 |
| 45 | 645 | 4 | 630 | 5 | 610 | 7 |
