Taurin Ƙimar Kayan Aikin Tungsten Karfe Ko Alloy Milling Tool

Taurin shine iyawar abu don tsayayya da abubuwa masu wuya suna danna samansa. Yana ɗaya daga cikin mahimman alamun aiki na kayan ƙarfe.

   Gabaɗaya, mafi girman taurin, mafi kyawun juriya na lalacewa. Fihirisar taurin da aka saba amfani da su sune taurin Brinell, taurin Rockwell da taurin Vickers.

Brinell hardness (HB)

Latsa ƙwallon ƙarfe mai taurara na ƙayyadaddun girman (gaba ɗaya 10 mm a diamita) cikin saman kayan tare da wani nau'i (gaba ɗaya 3000 kg), kuma ajiye shi na ɗan lokaci. Bayan saukarwa, rabon kaya zuwa wurin shigarwa shine lambar taurin Brinell (HB), kuma naúrar ita ce kilogram ƙarfi / mm2 (n / mm2).

2. Rockwell hardness (HR)

Lokacin da HB> 450 ko samfurin ya yi ƙanƙanta, ba za a iya amfani da ma'aunin taurin Rockwell maimakon gwajin taurin Brinell ba. Yana da mazugi na lu'u-lu'u mai saman kusurwar digiri 120 ko ƙwallon ƙarfe mai diamita na 1.59 da 3.18 mm. An danna shi a cikin saman kayan a ƙarƙashin wani nauyin kaya, kuma ana ƙididdige taurin kayan daga zurfin ciki. Dangane da taurin kayan gwajin daban-daban, ana iya bayyana shi ta ma'auni daban-daban guda uku:

450 ko samfurin ya yi ƙanƙanta, ba za a iya amfani da ma'aunin taurin Rockwell maimakon gwajin taurin Brinell ba. Yana da mazugi na lu'u-lu'u mai saman kusurwar digiri 120 ko ƙwallon ƙarfe mai diamita na 1.59 da 3.18 mm. An danna shi a cikin saman kayan a ƙarƙashin wani nauyin kaya, kuma ana ƙididdige taurin kayan daga zurfin ciki. Dangane da taurin kayan gwajin daban-daban, ana iya bayyana shi ta ma'auni daban-daban guda uku:

HRA: Ana amfani da taurin da aka samu ta nauyin kilo 60 da mazugi na lu'u-lu'u don kayan da ke da taurin gaske (kamar siminti carbide).

HRB: Taurin da aka samu ta hanyar taurare ƙwallon karfe mai diamita na 1.58 mm da nauyin 100 kg. Ana amfani da shi don kayan da ƙananan tauri.

HRC: Taurin da aka samu ta nauyin kilogiram 150 da mazugi na lu'u-lu'u ana amfani da shi don kayan da ke da tauri mai girma (kamar quenched karfe).

3. Vickers hardness (HV)