Essays about: "rock drill"

Showing result 1 - 5 of 48 essays containing the words rock drill.

1. 1. Method to statistically secure field test results for rock drilling tools

   University essay from Uppsala universitet/Institutionen för materialvetenskap

   Author : Frida Olander; [2023]
   Keywords : Statistics; Probability; Hypothesis test; Linear regression;

   Abstract : The aim of this project is to find a statistical method that describes survival and outcome of a prototype drilling tool from several references and determine how many references are needed for a statistically secure result. The project also answers which variables that affects the outcome. READ MORE

3. 2. Stratigraphy and palaeoenvironment of the early Jurassic volcaniclastic strata at Djupadalsmölla, central Skåne, Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Per Wahlquist; [2023]
   Keywords : volcaniclastic; Djupadalsmölla; CSVP; palynomorphs; early Jurassic; late Pliensbachian; Earth and Environmental Sciences;

   Abstract : From the almost 200 volcanic outcrops in the Central Skåne Volcanic Province (CSVP), only three are of volcaniclastic material. These volcanoclastics, and the transition to the underlying crystalline basement, have been investigated for the first time in a drill core (KBH2) from Djupadalsmölla in order to understand the stra-tigraphy, depositional process, age of deposition, and depositional environment. READ MORE

4. 3. A Petrographic and Paragenetic Characterization of the Ertelien Ni-Cu Deposit (Norway)

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Alena Niarezka; [2023]
   Keywords : Ertelien Ni-Cu deposit; ore geology; enrichment processes; nickel; cobalt; copper; optical microscopy; electron probe micro-analysis; critical metals; Ertelien Ni-Cu fyndighet; malmgeologi; anrikningsprocesser; nickel; kobolt; koppar; optisk mikroskopi; elektronsondsmikroanalys; kritiska metaller;

   Abstract : The escalating demand for metals driven by advancements in renewable energy technologies and hightech products has underscored the significance of understanding and characterizing ore deposits. This study focuses on the Ertelien Ni-Cu deposit in Norway, a region rich in nickel, cobalt, and copper resources—essential components for the transition to a sustainable energy future. READ MORE

5. 4. Electrification of rock drills : An initial study of an electromagnetic percussion concept

   University essay from Linköpings universitet/Fluida och mekatroniska system

   Author : Jakob Smith Siljestrand; Sai Shridhar Chebolu; [2023]
   Keywords : Epiroc; electrification; Hopsan; TLPM; linear motor; rock drill; percussion; electromagnetic; simulation; electric motor; mining; electromagnetism;

   Abstract : The world is looking for greener solutions and so is the mining industry. This quest has led to the question whether it is possible to have a completely electric rock drill. This work carries out an initial exploration of completely electrified percussion. READ MORE

6. 5. 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