Essays about: "Rock Drill"

Showing result 21 - 25 of 48 essays containing the words Rock Drill.

  1. 21. Petrophysic of the Host-rock to the Ore in the Lovisa Mine, Bergslagen

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Oscar Gilljam Päärt; [2019]
    Keywords : Petrophysics; density; magnetic volume susceptibility; natural remanent magnetization; Bergslagen; lithology; Petrofysik; densitet; magnetisk susceptibilitet; naturlig magnetisk remanens; Bergslagen; lithologi;

    Abstract : The Bergslagen region has three base-metal mines operating today, and one of them is the Lovisa mine, which host a Zn-Pb-Ag deposit. The Lovisa mine is located in the Guldsmedshyttan area north of Lindesberg. READ MORE

  3. 22. New Impact test method for rock drill inserts

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Erik Borg; [2018]
    Keywords : Cemented Carbide; Impact test; Rock drilling;

    Abstract : This work has been performed at the Applied Materials ScienceDivision at The Ångström Laboratory in collaboration with SandvikMining AB. The project is part of the joint research programmeCoFree.In this work, the problem of finding an impact test method forcemented carbide rock drill inserts is considered. READ MORE

  4. 23. Binder Migration in Double Pressed Drill Bit Inserts

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Author : Axel Bjerke; [2018]
    Keywords : Physics and Astronomy;

    Abstract : It is possible to produce functionally graded cemented carbides on a large scale by double pressing. Being able to predict the binder migration in WC-Co cemented carbides during the sintering is essential to the design of such cemented carbides. The cobalt content is one of the main factors determining the hardness gradient. READ MORE

  5. 24. Evaluation of a Programmable Hydraulic Valve for Drill Rig Applications

    University essay from Linköpings universitet/Fluida och mekatroniska system

    Author : Jonathan de Brun Mangs; Mikael Tillquist; [2018]
    Keywords : Hydraulic valve; CAN; Drill rig; Rock drill; Blast hole drilling; Time delays; Ziegler-Nichols; PI-control;

    Abstract : The increase of intelligent systems can be seen in every industry. Integrated sensors and processors are used with internal control systems to create better performance for mobile hydraulic applications. The report describes how an evaluation was made to see if the productivity of a drill rig could be increased. READ MORE

  6. 25. Wear and degradation of Co, Fe and Ni-based cemented carbides against sandstone and granite

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Felix Jacobson; [2018]
    Keywords : Cemented carbide; mining; drilling; granite; sandstone; mine water; wear; degradation; tribology; tribochemical; cobalt; nickel; iron;

    Abstract : This diploma work is performed at Sandvik Mining and Rock Technology, Rock Tools division, a world-leading mining equipment manufacturer. The aim is to study the wear of cemented carbide rock drill inserts worn against granite and sandstone countersurfaces, with focus on the impact of binder phase composition and flushing agent chemistry. READ MORE