Sökning: "Elektroslaggomsmältning ESR"

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  1. 1. Nitrogen Without Oxygen : The effect of ferroalloys added after vacuum treatment on cleanliness of nitrogen-alloyed tool steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Leo Nilsson Hultén; [2021]
    Nyckelord :Tool steel; Electro-Slag Remelting ESR; Nitrogen Alloying; Ferroalloys; Nonmetallic Inclusions NMI; Verktygsstål; Elektroslaggomsmältning ESR; Kvävelegering; Ferrolegeringar; Ickemetalliska Inneslutningar NMI;

    Sammanfattning : Nitrogen-alloyed tool steel is made at Uddeholms AB by adding high-nitrogen ferroalloy after vacuum degassing where introduced impurities are hard to remove. In this thesis two types of high-nitrogen ferrochromium are compared, a solid version and a powder cored wire. LÄS MER