This work describes the production of geological drill rods through electromagnetic induction thermal treatment of tubes. The research aims at determining, through metalography, mechanical tests and field tests, the ideal induction hardening and tempering parameters, to produce drill rods with qualities similar to the ones available in the international market. The determination of the induction hardening and tempering parameters of SAE-1045 steel tubes, for the production of geological drill rods, was capable of producing hardness profiles with low fluctuations in values, ranging from a maximum value of 45HRc close to the extremity, to minimum values close to 35HRc at the end of the treated region.
Electromagnetic induction; geological drill rods; thermal treatment
