Essays about: "steel melt"

Showing result 16 - 20 of 31 essays containing the words steel melt.

  1. 16. Regulation of Nitrogen Content in High Alloyed Stainless Steels during the AOD Process

    University essay from KTH/Materialvetenskap

    Author : Hanna Englund; Henrietta Isaksson; [2019]
    Keywords : ;

    Abstract : As a final step in the argon oxygen decarburisation (AOD) process, argon- and nitrogen gas is blown through the melt. To regulate the nitrogen content in the steel melt during this step a reliable model is needed. READ MORE

  3. 17. Partitioning of Zn and Cr in Basic Oxygen Steelmaking

    University essay from Luleå tekniska universitet/Industriell miljö- och processteknik

    Author : Andreas Persson; [2019]
    Keywords : Partitioning; Cr; Zn; BOS;

    Abstract : Steel is the worlds most used metal and 2016 the produced amount of steel was measured to a total1630 MT where the Blast Furnace (BF) - Basic Oxygen Steelmaking (BOS) process, which is the mostcommon steel process, stands for 75% of the world’s current crude steel production.The BOS process works by blowing oxygen at high velocity through a hot metal bath consisting of hotmetal from the blast furnace mixed with fluxing agents as slag formers and up to 30 weights% scrap. READ MORE

  4. 18. Optimization of Rare Earth Metals (REM) addition in high temperature stainless steel grade 253MA.

    University essay from KTH/Materialvetenskap

    Author : Bharath Vasudev Rangavittal; [2019]
    Keywords : REM addition; non-metallic inclusion; oxidation; austenitic; optimization;

    Abstract : The focus of this thesis work is to optimize rare earth metal (REM) addition in Therma 253MA, an austenitic stainless-steel grade in order to get a good trade-off between oxidation resistance property and the amount of big REM inclusions formed. Big REM inclusions are detrimental to material properties and REM is required to be dissolved in the matrix for improving the oxidation resistance. READ MORE

  5. 19. What If We Tilt the AOD? : Developing a numerical and physical model of a downscaled AOD converter to investigate flow behaviour when applying an inclination.

    University essay from KTH/Materialvetenskap

    Author : Serg Chanouian; [2019]
    Keywords : AOD; inclination angle; penetration depth; mixing time;

    Abstract : In a scrap based stainless steel plant the dominant process for carbon reduction is the Argon oxygen decarburisation process (AOD). The process goes through three steps: decarburisation, reduction and desulphurisation where the main challenge is to oxidise carbon to CO without oxidising the expensive chromium. READ MORE

  6. 20. Characterization of a refractory cement and sensor development for temperature measurements in molten steel

    University essay from Uppsala universitet/Mikrosystemteknik

    Author : Pierre Sandin; [2018]
    Keywords : Refractory castable; high temperature; RTD; resistive temperature detector; steel melt; cement;

    Abstract : In steel manufacturing, temperature control is a critical parameter,as it is extremely important for the steel quality. In general,disposable sensors are regularly immersed in the melt for temperaturemeasurements. There are commercially available sensors for continuoustemperature measurements. READ MORE