(1) Riam ntug kev coj: plaub hau ntau dhau los yog qhov loj dua (txiav cov duab); ua me dua (xuas nrig ntaus); flatness tsis zoo. Rov tua los sis hloov tuag.
(2) Tsis muaj ib qho kev qhia: tus pin tus qhia lossis lwm cov cuab yeej muab tso rau qhov tsis muaj kev cuam tshuam, qhov chaw pub rau tsis tau xoob lossis lub koob qhia kev qhia tsis muaj tseeb, thiab phau ntawv qhia tsis tuaj yeem raug kho. Txoj haujlwm nrhav tau hnav thiab lub nyob deb pub dhau lawm.
(3) Txoj kev tuag luv dhau: tus camber loj dua, cov chamfer tsis txaus, thiab daim ntawv tsis tiav.
(4) Tsis muaj qhov raug khiav tawm ntawm lub qhov: nyem los yog raug mob lossis deformed. Tshem lub qhov khiav tawm lossis nce lub qhov khiav tawm thiab qhov tob.
(5) Tsis muaj qhov ejection: tsis zoo rau lub cev, khoov caj dab tsis, muaj qhov tsis zoo, sab sauv tuag rub, thiab lub ncauj tsis pub ncua.
. Hloov kho lub zog elastic lossis hloov txoj haujlwm lossis tus lej pins; tus pin yog npog luv luv kom phim.
(7) Cov khoom siv qhia tsis zoo: Lub sijhawm ntev ntawm cov phaj coj tsis yog loj dua los yog cov lus qhia sib cais yog qhov loj heev, los yog cov pwm thiab cov khoom noj khoom haus yog seej lossis qhov deb ntawm cov pwm thiab qhov chaw pub noj kom ntev dhau.
(8) Kev rhuav tshem ntawm cov seem: qee qhov khoov tsis tuaj yeem tso cai rau cov khoom sib tshooj, thiab yuav tsum tso tawm txhua zaus, lossis cov tawv nqaij tsis zoo tuaj yeem kov yeej los ntawm siab ncoo lossis txiab.
(9) Dabtsi yog khoov deformation: nyem qhov khoom ntawm qhov khoov siab; qhov sib luag ntawm qhov yog deformed los ntawm lub zog tensile, thiab lub zog tsis ncaj ncaj khoov à qhov khoob khoob khoob tsis ntev ntev.
(10) Punching shear deformation: cov khoom tsis tiaj, qhov loj me lossis eccentricity yog asymmetric.
(11) Kev cuam tshuam deformation: Cov khoom tawg tawm thiab cov cua nrawm zog lossis lub zog poob thiab poob cuam tshuam rau deformation.
(12) Floating nti extrusion: cov txheej txheem sib txawv ntawm cov khoom pov tseg ntab los yog cov ntuag zoo ntawm cov nplais tuag lossis lub cev txawv teb chaws.
(13) Cov khoom tsis zoo: Khoom siv dav lossis tuab, cov khoom siv tsis raug lossis cov khoom tawv, yuav ua rau lub cev tsis xws luag.
(14) Kev tsim tsis zoo: kev ua haujlwm tsis zoo hauv tshuab hluav taws xob thiab kev teeb tsa qhov chaw tsis zoo yog qhov nyuaj rau kov yeej tshwj tsis yog tus qauv hloov pauv.
