Sökning: "stellite"

Hittade 3 uppsatser innehållade ordet stellite.

  1. 1. Material analysis for a rotating inlet valve : Sliding contact in an oil-free super-critical steam environment

    Uppsats för yrkesexamina på avancerad nivå, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :Johan Samuelsson; [2022]
    Nyckelord :Mechanical carbon; graphite; carbon graphite; zirconia; steam engine; steam; tribology; friction; wear; stellite; nitronic 60; antimony; carbon; Ni-resist cast iron; waste heat recovery; rotating inlet valve; valve; Mekaniskt kol; gafit; ångmotor; ånga; tribologi; friktion; nötning; gjutjärn; roterande inloppsventil; ventil;

    Sammanfattning : In this thesis, the aim is to study possible tribo-materials for a rotating inlet valve and to find a suitable material combination for the contact. The valve is part of a modern oil-free and high temperature steam engine. Systematic material selection together with tribological tests and wear analyses are performed. LÄS MER

  3. 2. Investigation of wear behavior of different sliding bearing materials in an alkaline environment

    Master-uppsats,

    Författare :Martina Ottosson; [2018]
    Nyckelord :wear; tribology; alkaline; sliding bearing;

    Sammanfattning : In sliding bearing wear is a very common problem and can be affected by several factors. The wear in a bearing can lead to total failure of the component and lower the lifetime. In a sliding bearing used in a machine in the pulp and paper industry large wear has been detected, but no clear evidence of what the wear depends on. LÄS MER

  4. 3. Kartläggning av ventiler innehållande Stellite i reaktornära vattensystem på Forsmark 2

    M1-uppsats, Högskolan i Gävle/Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

    Författare :Daniel Ohlsson; [2017]
    Nyckelord :Boiling Water Reactor; BWR; Stellite; Forsmark; Cobalt; Cobalt-59; Kokvattenreaktor; BWR; Stellite; Forsmark; kobolt; kobolt-59; kobolt-60; korrosion; dosrat; strålning;

    Sammanfattning : In the process of a boiling water reactor, high-levels of waste and radiation occur, where almost all the dose per person of the radiation in Forsmark are due to the radioactive iso-tope cobalt-60. The reason is that the stable isotope cobalt-59 is converted to the radioac-tive isotope cobalt-60 due to neutron irradiation in the reactor. LÄS MER