Lub hardness ntawm cov yeeb nkab steel yog hais txog cov khoom muaj peev xwm tiv thaiv deformation nyob rau hauv sab nraud quab yuam. Lub hardness yog ib qho ntawm cov cim tseem ceeb ntawm cov khoom siv.
Hauv kev tsim thiab siv cov yeeb nkab steel, kev txiav txim siab ntawm lawv cov hardness yog qhov tseem ceeb heev. Lub hardness ntawm cov kav hlau tuaj yeem ntsuas los ntawm ntau yam hardness testers xws li Rockwell, Brinell, thiab Vickers tsim los ntawm Laizhou Laihua Testing Instrument Factory, uas tuaj yeem hloov kho raws li xav tau. Cov kev ntsuas tseem ceeb suav nrog cov hauv qab no:
1. Rockwell hardness test method
Rockwell hardness test tam sim no yog txoj kev siv dav tshaj plaws, cov HRC tsuas yog thib ob rau Brinell hardness HB hauv cov qauv steel yeeb nkab. Nws ntsuas qhov tob ntawm qhov indentation thiab tuaj yeem siv los ntsuas cov ntaub ntawv hlau los ntawm cov mos mos mus rau qhov nyuaj heev. Nws yog qhov yooj yim dua li Brinell xeem txoj kev.
2. Brinell hardness test method
Brinell hardness test method kuj tau siv dav hauv kev lag luam. Nws yog dav siv nyob rau hauv seamless steel yeeb nkab qauv. Lub hardness ntawm cov khoom yog feem ntau qhia los ntawm indentation txoj kab uas hla. Nws yog intuitive thiab yooj yim, tab sis nws tsis muaj feem xyuam rau cov kav hlau uas nyuaj los yog thinner.
3. Vickers hardness test method
Vickers hardness test kuj tau siv dav. Nws muaj qhov zoo tseem ceeb ntawm Brinell thiab Rockwell txoj kev sim, tab sis kov yeej lawv qhov tsis zoo. Nws yog tsim rau hardness kuaj ntawm ntau yam ntaub ntawv, tab sis tsis haum rau cov qauv nrog me me diameters. Nws tsis yooj yim npaum li Rockwell xeem txoj kev thiab tsis tshua muaj siv nyob rau hauv steel yeeb nkab qauv.
Post lub sij hawm: Oct-09-2024
