1 - 1 / 1 1 |
1. Change of the properties of steel material of the roller cone bit due to the influence of the drilling operational parameters and rock properties Jurij Šporin, Tilen Balaško, Primož Mrvar, Blaž Janc, Željko Vukelić, 2020, original scientific article Keywords: drilling, roller cone bit, mechanism of drill bit wear, carbide coating, HV hardness, high temperature |