Essays about: "drill rods"

Found 2 essays containing the words drill rods.

1. 1. Influence of Surface Carbon Content on the Wear of Threaded Connections in Rock Drilling Steels

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Andreas Hälsing; [2023]
   Keywords : carbon content; wear performance; carburized steel; dry contact interface; threaded connections; drill rods; samples; shot peening; production process; twin-disc wear tester; RPM; operating conditions; wear rate; surface topography; hardness; optical analysis; light optical microscopy; scanning electron microscopy; surface carbon content; microstructural changes; frictional heat; contact pressure; wear mechanisms; plastic deformation; adhesive scratching; material removal; delamination;

   Abstract : This thesis work was conducted at Luleå University of Technology in collaboration with Sandvik Rock Tools. The aim of the work was to determine the influence of carbon content on the wear performance in carburized steel in the dry contact interface of threaded connections between drill rods. READ MORE

3. 2. Identifying Important Features to Minimize Hole Deviation in Percussive Drilling

   University essay from KTH/Maskinkonstruktion (Inst.)

   Author : Ketan Dhananjay Deshpande; [2021]
   Keywords : Bending; Buckled profile; Drilling; Hole deviation; Mathematical model; Böjning; Buckled profil; Borrning; Hålavvikelse; Matematisk modell;

   Abstract : Hole deviation is one of the most significant problems in drilling applications. Deviated holes result in inefficient blasting and have severe economic impacts due to increased equipment consumption. Conversely, straighter holes help in increasing production scales and reduce operational costs. READ MORE