Damage Analysis in Rock Rotary Tricones Bit -A Case Study

摘要

Bit is the main component of rotary drill tools because of its replace and repair costs. The direct contact with rock as a hard material leads to produce variety of damages in the bit's surface during the excavation. This paper presents a proper view to the subject of bit's damages in the rotary tricones bit as a prevail tools in large open mines. Observation of bits after drilling expressed that several damages with different features and mechanisms can occur on the different part of bit surface. Furthermore, majority of bits in the rotary tricones bit encountered several modes of damages simultaneously.