Muaj ntau yam cuam tshuam rau kev puas tsuaj toughness ntawm cov hniav ncig. Kev nkag siab txog cov xwm txheej no tso cai rau kev xaiv cov hniav kom raug thiab ruaj khov dua.
1.Substrate muaj pes tsawg leeg
Cov khoom ntawm cov hniav ncaj qha txiav txim siab txog qib ntawm pob txha toughness. High-Speed steel (HSS) muaj qhov toughness zoo, ua rau nws tsim nyog rau tej yam kev mob uas muaj loads siab thiab muaj kev cuam tshuam, thiab nws yog ib qho kev xaiv rau siab - siv zog.
2. Kev kho cua sov txheej txheem
Kev kho cua sov ncaj qha optimizes cov qauv sab hauv ntawm cov hniav. Txheem quenching + tempering tuaj yeem txhim kho qhov tawv thiab tawv, ua rau cov hniav tawg ntau dua - tiv taus thiab tsis tshua muaj kev tawg.
3.Hloov qauv tsim
Cov hniav nrog nyias npoo thiab lub kaum ntse ntse tsim yog cov ntse dua tab sis kuj nkig; cov hniav nrog tuab ntoo khaub lig- ntu thiab arc hloov pauv muaj zog tiv thaiv tawg. Notches thiab stress concentration ntsiab lus nyob rau hauv cov qauv yuav txo tau puas toughness.
