Sökning: "Post weld heat treatment"

Hittade 4 uppsatser innehållade orden Post weld heat treatment.

  1. 1. Modeling of Precipitation by Structural Phase-Field Crystal Method

    Master-uppsats, Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

    Författare :Jacob Holmberg-Kasa; [2021]
    Nyckelord :strain-age cracking; SAC; structural phase-field crystal; XPFC; nickel-based alloys; precipitation;

    Sammanfattning : Nickel-based alloys are used in components such gas turbines within the aerospace industry and electric power generation due to its high tensile, rapture and creep strength. Increasing the efficiency of gas turbines are crucial to reduce emissions within the aerospace industry and increasing power gain for electric power generation. LÄS MER

  3. 2. Manufacturing of Welded Rings : Evaluation of Post-Weld Operations

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Jim Andersson; [2019]
    Nyckelord :FBW; flash butt welding; low alloy steel; metallurgy;

    Sammanfattning : Pipe and ring blanks can be produced in several different ways. Today's focus on environmental effects motivates companies to develop processes that are as efficient as possible in their production. Ringsvets AB is a company that produces pipe and ring blanks from a flat stock by rolling and welding the piece to make it stay in its desired form. LÄS MER

  4. 3. Residual stresses in Ti-6Al-4V from low energy laser repair welding

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Peter Ericson; [2018]
    Nyckelord :Micro laser welding; Low energy welding; Ti-6Al-4V; Ti64; Residual stress; Response Surface Methodology; Repair welding; Welding simulation; Mikrolasersvetsning; Lågenergetisk svetsning; Lågenergisvets; Ti-6Al-4V; Ti64; Restspänningar; Response Surface Methodology; Reparationssvets; Svetssimulering;

    Sammanfattning : Millimeterstora och svårupptäckta defekter kan uppstå internt i stora och komplexa gjutgods av Ti-6Al-4V, ibland går dessa oupptäckta tills detaljen genomgått mekanisk bearbetning och en stor kostnad redan har gått in i den. Dessa defekter och andra industriella olyckshändelser leder till ett behov av additiva reparationsmetoder där den för tillfället rådande metoden är TIG-svetsning. LÄS MER

  5. 4. Effects of different heat treatments on hardness of Grade 91 steel

    Kandidat-uppsats, Karlstads universitet/Avdelningen för maskin- och materialteknik

    Författare :Jonas Ohlsson; [2014]
    Nyckelord :Grade 91; Post weld heat treatment; Heat treatment cycles; Hardness;

    Sammanfattning : CCI Valve Technology AB is a company located in Säffle, Sweden, that manufactures and installs bypass valves. Due to requirements outside normal standards on the valve's hardness values, some measurements have had difficulties meeting such requirements. During this thesis work, tests were carried out to determine how to overcome the difficulties. LÄS MER