Lub hardness ntawm lub workpiece tom qab rhuab los ntawm cov khoom siv ntau zaus

1. Knoop hardness: Feem ntau, tus nqi no feem ntau yog siv hauv kev ua, uas yog qhov hardness ntsuas raws li tus nqi zoo.

2. Leeb hardness: qhia los ntawm HL, qhov cuam tshuam lub cev nrog qee qhov zoo ntawm tungsten carbide pob lub taub hau yog siv los cuam tshuam rau saum npoo ntawm daim ntawv xeem nyob rau hauv cov nyhuv ntawm ib tug tej yam quab yuam, thiab ces rebound.

3. Webster hardness: ib qho nyuaj steel indenter ntawm ib tug tej yam duab yog nias rau hauv lub nto ntawm tus qauv nyob rau hauv cov nyhuv ntawm tus qauv caij nplooj ntoos hlav test force, thiab hardness ntawm cov khoom yog txiav txim los ntawm lub indentation qhov tob ntawm lub indenter. Feem ntau, Webster hardness unit yog: 0.01mm indentation tob.

4. Shore hardness: ib tug specification piav txog hardness ntawm cov ntaub ntawv, hu ua: HS.

5. Brinell hardness: feem ntau siv thaum cov khoom yog mos, xws li cov hlau tsis muaj hlau, hlau, thiab lwm yam.

6. Rockwell hardness: siv nyob rau hauv cov ntaub ntawv uas muaj zog dua hardness, xws li hardness tom qab tshav kub kev kho mob ntawm high zaus quenching khoom. Qhov no yog nyob ntawm qhov tob ntawm indentation yas deformation los txiav txim siab tus nqi hardness lub hom phiaj.

1. Vickers hardness: Piv nrog Brinell thiab Rockwell hardness test, qhov ntsuas ntsuas ntawm Vickers hardness test yog qhov dav.