Zofunikira pakugwirira ntchito kwa magawo a nkhungu
1. Mphamvu ndi kulimba
Chikombole chapamwamba kwambiri ndi zida za zida nthawi zambiri zimagwira ntchito movutikira.Ena nthawi zambiri amakhala ndi vuto lalikulu, zomwe zimapangitsa kuti pakhale fractures.Choncho, nkhungu zolondola ziyenera kukhala ndi mphamvu zambiri komanso zolimba.Ndiko kuteteza zigawo za nkhungu kuti zisawonongeke mwadzidzidzi panthawi yogwira ntchito.Ndipo kulimba kwa nkhungu ndi chida makamaka kumadalira zomwe zili ndi mpweya, kukula kwa tirigu, ndi microstructure ya zinthuzo.
2. Kutopa fracture ntchito
Kuthyoka kwa kutopa kumachitika nthawi zonse pamene ziboliboli za jekeseni wa pulasitiki zikugwira ntchito.Ndi chifukwa cha zotsatira za nthawi yaitali za cyclic stress.Mawonekedwewa akuphatikizapo kukhudzidwa kosiyanasiyana ndi mphamvu yaying'ono, kutambasula, kukhudzana, ndi kupindika kutopa.Ambiri, katundu wa mwambo akamaumba ndi tooling zimadalira zinthu izi.Monga mphamvu zake, kulimba, kuuma, ndi kuphatikizika kwake zomwe zili muzinthuzo.