9H yana nufin taurin kuma 9D yana nufin karkatar da membrane.
Amma babu ainihin 9D, komai yawan finafinan zafin D da aka raba su zuwa curvatures uku: jirgin sama, 2.5D, da 3D.
9H yana nufin taurin, wanda a zahiri yana nufin taurin fensir, ba taurin Mohs ba.Ko da gilashin gilashin na iya wuce wannan taurin, wanda kuma shine gimmick na tallace-tallace.
Taurin ya kasu zuwa:
1. Tsage tauri.An fi amfani dashi don kwatanta matakin laushi da taurin ma'adanai daban-daban.Hanyar ita ce zabar sanda mai ƙarfi ɗaya ƙarshen ɗaya kuma mai laushi a ɗayan, sannan a goge kayan da aka gwada tare da sandar, kuma a tantance laushi da taurin kayan da aka gwada gwargwadon matsayin karce.A cikin magana mai inganci, karce da abubuwa masu wuya ya fi tsayi, kuma tatsuniyoyi da abubuwa masu laushi suka yi guntu.
2. Latsa-cikin taurin.An fi amfani da shi don kayan ƙarfe, hanyar ita ce danna ƙayyadadden mai shiga cikin kayan da aka gwada tare da wani nau'i mai nauyi, kuma kwatanta taurin kayan da aka gwada tare da girman nakasar filastik na gida a saman kayan.
Saboda bambance-bambance na indenenter, kaya da tsawon lokacin kaya, akwai nau'ikan taurin shigar da yawa, galibi Brinell hardness, taurin Rockwell, taurin Vickers da microhardness.
3. Maimaita taurin.An fi amfani da shi don kayan ƙarfe, hanyar ita ce yin ƙaramin guduma na musamman ya faɗo cikin yardar kaina daga wani tsayin tsayi don tasiri samfurin kayan da za a gwada, da amfani da adadin kuzarin da aka adana (sannan kuma a sake shi) ta samfurin yayin tsarin tasiri (ta hanyar dawowar ƙananan guduma).tsalle tsayi ƙaddara) don ƙayyade taurin kayan.
Hanyar gwajin taurin Rockwell ita ce SP na Amurka da Rockwell ya gabatar a cikin 1919, yana shawo kan gazawar da aka ambata a sama na gwajin Brinell.Indenter da aka yi amfani da shi don taurin Rockwell shine mazugi na lu'u-lu'u tare da kusurwar taper na 120 ° ko ƙwallon ƙarfe mai diamita na 1/16 inch (inch 1 daidai da 25.4 mm), kuma ana amfani da zurfin shigar a matsayin tushen calibrating taurin. darajar.
Lokacin aikawa: Nuwamba 18-2022