Essays about: "Rock drilling"

Showing result 1 - 5 of 53 essays containing the words Rock drilling.

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. 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

4. 3. Hydrogeological and economic analysis of a groundwater-based water supply system in rural Nepal

   University essay from Lunds universitet/Väg- och vattenbyggnad (CI); Lunds universitet/Teknisk geologi

   Author : Hamon Hedayatnasab; [2023]
   Keywords : Technology and Engineering;

   Abstract : Access to safe drinking water and sanitation is a given standard and considered as basic human rights in urban areas and industrialized countries. However, 40 % of the world's population living in rural areas in developing countries lack access to safe drinking water. READ MORE

5. 4. Cost to serve: The Interrelationships between costs in the Supply Chain of companies within the hard metal rock drilling and metal cutting tools industry

   University essay from Göteborgs universitet/Graduate School

   Author : Derick Okodi; Måns Riesser; [2022-08-04]
   Keywords : Supply Chain Management; Open-book Accounting; Outsourcing; Supplier-manufacturer Collaboration; Cost to Serve;

   Abstract : The globalised market has introduced consumers to a variety of affordable products with a wide range of desired attributes from competitors who are strategically located in areas with affordable labour, expertise, and raw materials. This has encouraged firms to circumvent competition through outsourcing. READ MORE

6. 5. Paleomagnetic and Thermomagnetic Studies on Rock Samples from COSC - 1 Drilling Project

   University essay from Uppsala universitet/Geofysik

   Author : Wanyi Li; [2022]
   Keywords : Scandinavian Caledonides; remanent magnetization; AF demagnetization; temperature dependent magnetic susceptibility; Skandinaviska Kaledoniderna; remanent magnetism; växelfältsavmagnetisering; temperaturberoende av magnetisk susceptibilitet;

   Abstract : The COSC-1 borehole located in the Lower Seve nappe of the Central Scandinavian Caledonides is intended to study the tectonic evolution of the Paleozoic orogen. The drilling project reached a depth of 2495.8m and obtained samples from different lithologal units of mica schist, amphibolite, gneiss, and mylonitic gneisses. READ MORE