ÜÇ KONİLİ ROTARİ MATKAPLARIN SEÇİMİNDE DİKKAT EDİLECEK ÖNEMLİ PARAMETRELER

Tricone bit is the most common used type of rotary drilling bits in surface mining. Even though IADC is usually used to select these bits, there are many parameters which affect drilling rate and durability of them. Users have tendency to select bits with higher IADC codes, since unqualified productions are becoming widespread in these days. This causes decreasing drilling rates and increasing costs. Firstly, a bit should be produced with right materials and proper metallurgical processes. Design parameters are also important to be appropriate for the formation drilled. In order to increase performance of selected bit, value of working parameters such as feed force and rotary speed should be defined according to formation properties during the operation. Users should consider not only bit cost but also cost of all drilling operation when they select proper bit.