A cikin dogon lokaci da suka gabata, mun yi amfani da teburin juyawa na ƙasashen waje zuwa na China, amma yayin amfani, saboda sinadaran da ke cikin kayan, fasahar sarrafawa, girman samfurin da sauran abubuwan da suka shafi daidaiton kayan aiki na aunawa a ƙasashe daban-daban, tauri da alaƙar juyawar ƙarfi don kafa tushe da hanyoyin sarrafa bayanai sun bambanta, mun gano cewa akwai babban bambanci tsakanin ƙimar juyawa daban-daban. Bugu da ƙari, babu wani mizani ɗaya, ƙasa daban-daban suna amfani da teburin juyawa daban-daban, wanda ke kawo rudani a cikin ƙimar juyawar ƙarfi da tauri.
Tun daga shekarar 1965, Binciken Kimiyya na Ma'aunin Ƙasa na China da sauran sassa sun kafa ma'aunin taurin Brinell, Rockwell, Vickers da na Rockwell na sama da kuma ƙimar ƙarfi bisa ga adadi mai yawa na gwaje-gwaje da bincike na bincike, don bincika alaƙar da ke tsakanin taurin daban-daban da ƙarfin ƙarfe, ta hanyar tabbatar da samarwa. Sun ƙirƙiri nasu "teburin juyawar ƙarfe mai duhu da ƙarfi" wanda ya dace da jerin ƙarfe 9 kuma ba tare da la'akari da matakin ƙarfe ba. A cikin aikin tabbatarwa, an shiga raka'a sama da 100, an sarrafa jimillar samfura sama da 3,000, kuma an auna bayanai sama da 30,000.
Bayanan tabbatarwa suna rarraba daidai a ɓangarorin biyu na lanƙwasa na juyawa, kuma sakamakon ya yi daidai da rarrabawar al'ada, wato, waɗannan teburin juyawa suna daidai da gaskiya kuma suna samuwa.
An kwatanta waɗannan teburin juyawa a duniya da irin waɗannan teburin juyawa na ƙasashe 10, kuma ƙimar juyawa ta ƙasarmu kusan matsakaici ne na ƙimar juyawa na ƙasashe daban-daban.
Lokacin Saƙo: Maris-26-2024
