Hardness test method ntawm kev tiv thaiv npog ntawm linear sliding unit
Yuav ua li cas txhawm rau txheeb xyuas qhov nyuaj ntawm kev tiv thaiv npog ntawm linear sliding unit
Cov khoom ntawm kev tiv thaiv npog ntawm linear zawv zawg chav tsev ncaj qha cuam tshuam rau kev ua haujlwm zoo, thiab tus nqi hardness yog qhov tseem ceeb Performance index uas txiav txim siab qhov kev ua ntawm casting.
1. Brinell hardness: Mainly used to determine the hardness of castings, forgings, non-ferrous metal parts, hot-rolled blanks and annealed parts, and the measurement range is ≯ HB450.
2. Rockwell hardness: HRA is mainly used for high-hardness specimens to determine the hardness of materials and surface hardness above HRC67, such as cemented carbide, nitrided steel, etc., and the measurement range is HRA>70. HRC feem ntau yog siv los txiav txim siab qhov hardness ntawm steel qhov chaw (xws li carbon steel, cuab yeej steel, alloy steel, thiab lwm yam) tom qab quenching los yog tempering, thiab qhov ntsuas ntau yog HRC2067.
3. Vickers hardness: siv los txiav txim qhov hardness ntawm nyias qhov chaw thiab qhia rail guards, thiab kuj yuav siv tau los txiav txim qhov hardness ntawm nto hardening tshuab cuab yeej castings xws li carburizing, cyanidation, thiab nitriding.