THE INFLUENCE OF THE CHEMICAL COMPOSITION OF MATERIALS OF DRILLING BITS ON THE MAIN CAUSES OF THEIR DESTRUCTION
DOI:
https://doi.org/10.34185/1991-7848.itmm.2023.01.008Keywords:
types of failure, fracture toughness, wear resistance, strength criterion, brittle fracture, three cone drill bitsAbstract
Three-layer drill bits work under increased loads and wear, which can cause their rapid failure. The complex design of the drills is also the reason for the difficulty of controlling their overall strength. The analysis of the types of destruction, together with the analysis of the chemical composition of steels, can provide answers to many questions about the durability of drill bits under different operating conditions. Differences in the chemical composition of steels, deviations in the technological process of straightening, non-compliance with drilling technology can cause the failure of drill bits in the short term of their operation. These changes were controlled by the DI strength criterion with a further possible solution of this problem.
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