Cov tshuaj tua hluavtaws kho, peb kuj hu rau lub hau ntswj. Cov ntsia hlau yog muab faib ua hlau thiab stainless hlau screws. Hlau yog feem ntau nyuab dua yog tias nws xav tau kev nyuab dua. Txhua tus neeg yuav tsum tau tawv. Tab sis stainless hlau screws tsis tshua muaj yuav tsum tau hardened. Vim hais tias nws hardness txaus, nws yog ib qho nyuaj txaus. Cov hluav taws xob kub txoj hauv kev rau hlau yog piav qhia nram qab no.
Ua ntej, kev kho cua sov txoj kev kho: hom kev kho kom sov sov tau xaiv tau raws li qhov khoom thiab lub hom phiaj.
Ntxeev thiab tempered hlau: kub kub tempering tom qab quenching (500-650 ° C)
Caij nplooj ntoos hlav hlau: nruab nrab kub ntxhov tom qab quenching (420-520 ° C)
Carburized hlau: quenching tom qab carburizing thiab tom qab ntawd kub tsis txias (150-250 ° C)