Lub hardness ntawm cov yeeb nkab steel hais txog cov khoom siv muaj peev xwm tiv taus deformation nyob rau hauv sab nraud quab yuam. Lub hardness yog ib qho ntawm cov ntsuas tseem ceeb ntawm cov khoom ua tau zoo.
Hauv kev tsim khoom thiab kev siv cov kav hlau hlau, kev txiav txim siab ntawm lawv lub hardness yog qhov tseem ceeb heev. Lub hardness ntawm cov kav hlau tuaj yeem ntsuas los ntawm ntau yam kev ntaus pob zeb xws li Rockwell, brinell, thiab vickel, thiab vickel, thiab vicken ua ntsuas lub Hoobkas, uas tuaj yeem kho tau raws li xav tau. Cov qauv ntsuas tseem ceeb suav nrog cov hauv qab no:
1. Rockwell Hardness Testing txoj kev
Lub Rockwell Hardness Xeem tau yog tam sim no dav siv cov qauv, ntawm HRC yog thib ob nkaus xwb rau brinell hardness HB hauv cov yeeb nkab txheem. Nws ntsuas qhov tob ntawm indentation thiab tuaj yeem siv los ntsuas cov ntaub ntawv hlau los ntawm cov tawv muag muag tsis tshua muaj zog. Nws yog qhov yooj yim dua li qhov kev sim Brinell.
2. Brinell Hardness Testing txoj kev
Lub Brinell Hardness Ntsuas txoj kev tseem muaj dav siv hauv kev lag luam. Nws yog dav siv nyob rau hauv seamless steel yeeb yam qauv. Lub hardness ntawm cov khoom yog feem ntau qhia los ntawm indentation lub taub. Nws yog kev txawj ntse thiab yooj yim, tab sis nws tsis yog tsim nyog rau kev nyuaj lossis thinner steel kav dej.
3. Vickers Hardness Testing txoj kev
Lub Vickers Hardness Test kuj tseem siv dav. Nws muaj qhov zoo ntawm brinell thiab rockwell kev sim cov txujci, tab sis kov yeej lawv qhov kev tsis zoo. Nws yog qhov haum rau hardness ntsuas ntawm ntau cov ntaub ntawv, tab sis tsis haum rau cov qauv nrog cov kab mob me me. Nws tsis yooj yim xws li lub rockwell kuaj txoj kev thiab tsis tshua siv siv hauv cov qauv hlau yeeb.
Lub Sijhawm Post: Kaum-09-2024
