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Showing result 16 - 20 of 34 essays matching the above criteria.

  1. 16. Self Lubricating Components

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Filip Selenius Larsson; Simon Tidén; Niklas Levin Bjärnlid; Daniéla Quist; Tim Melin; [2017]
    Keywords : self lubricating; solid lubricant; high speed steel; powder metallurgy; friction; wear; molybdenum disulfide; tungsten disulfide; hexagonal boron nitride; soft metals; copper;

    Abstract : The tribological and mechanical properties are of great importance for a material’s lifetime, since it is highly dependent on these two factors. The purpose of this report was to examine suitable solid lubricants for Erasteel, a company that manufactures hot isostatic pressed high speed steels, that will enhance the tribological properties of their steels without worsening the mechanical properties. READ MORE

  3. 17. Alternative welding methods for nitrogen alloyed steel

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Anders Bertilsson; [2017]
    Keywords : Nitrogen alloyed tool steel; Uddeholm Vanax SuperClean; solid-state welding; direct-drive friction welding; friction stir welding; microstructure; Vickers microhardness testing; retained austenite measurement by X-ray diffraction; Kvävelegerat verktygsstål; Uddeholm Vanax SuperClean; trycksvetsning; friktionssvetsning; friktionsomrörningssvetsning; mikrostruktur; Vickers mikrohårdhetsmätning; restaustenitmätning med röntgendiffraktion;

    Abstract : This project explores the feasibility of the solid-state welding method direct-drive friction welding to be used as a joining method for the nitrogen alloyed steel Uddeholm Vanax SuperClean, produced via processes based on powder metallurgy. Vanax SuperClean cannot be welded using fusion welding methods where the base material melts, due to nitrogen escaping the material, resulting in inferior quality welds. READ MORE

  4. 18. Property Optimization of PM-gearing

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Marcus Söderberg Jansson; Oskar Lundkvist; [2017]
    Keywords : Gear; Powder Metallurgy; Property optimization; Egenskapsoptimering; Kugghjul; Pulvermetallurgi;

    Abstract : The purpose of this bachelor thesis is to design and optimize a powder metal gear through FEM-analyzes. The moment of inertia and weight of the gear shall be reduced at the same time as the demands on tension and bending stiffness are met. READ MORE

  5. 19. Optimization of the pressing process of triangular shaped cutting tool inserts

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Mauro Milani; [2016]
    Keywords : Powder metallurgy; Design of experiments; Cutting tool inserts; Cemented carbide;

    Abstract : Pressing of metallic powders is a manufacturing process widely investigated in the research field and in the industry. This thesis project is focused on optimizing the pressing process of cemented carbide powder utilized for the production of triangular shaped cutting tool inserts. READ MORE

  6. 20. Parameter study of a muffle furnace performance on powder heating using numerical multiphysics simulation with COMSOL

    University essay from KTH/Materialvetenskap

    Author : Emil Stålnacke; [2015]
    Keywords : muffle furnace; syngas; biomass; natural gas; parameter study; comsol; powder metallurgy; heat transfer;

    Abstract : The muffle furnace main purpose is to anneal the rough sponge iron powder transported through it, which is done by burning natural gas. Heat is absorbed by the muffle and is transferred to the bed of sponge iron powder. READ MORE