Transversal and Longitudinal Crack from Down-the-hole Bit
A Down-The-Hole (DTH) bit, also known as a hammer bit, is a specialized drilling tool used in DTH hammer drilling. It is attached to the bottom end of the drill string and is responsible for the actual rock penetration during the drilling process. The DTH bit is designed to withstand the percussive forces and impacts generated by the hammer mechanism.
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The DTH Bit is crucial to drilling operations. The Drill Bit directly impacts on varying rocks, which sets the highest demands on the drill bit's quality. To prevent breakage or crack, the material should have strong fracture toughness, fatigue strength, and fracture strength. DTH Drill Bits should be tailored to withstand the most demanding drilling conditions. Multiple head shapes and button types can be designed for various projects and rocks. Operation-related considerations such as Increase feed force, Increase lubrication, etc
The following table is the cause analysis and remedial measures for Down-the-Hole Bit Transversal and Longitudinal Crack:
