Sökning: "REM clusters"

Hittade 2 avhandlingar innehållade orden REM clusters.

  1. 1. A study of micro-particles in the dust and melt at different stages of iron and steelmaking

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Muhammad Nabeel; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Particle size distribution; ironmaking; iron ore pellets; dust generation; mechanical wear; friction; reduction; REM clusters; Electrolytic extraction; cluster size distribution; growth mechanism; collisions; statistical analysis.; Materials Science and Engineering; Teknisk materialvetenskap; Metallurgical process science; Metallurgisk processvetenskap;

    Sammanfattning : The dust particles generated due to mechanical wear of iron ore pellets and clusters formed in molten stainless steel alloyed with rare earth metals (REM) are considered in this study. Firstly, the influence of the characteristics of iron ore pellets, applied load on a pellet bed and partial reduction of the pellets on the size distribution of the generated dust was investigated. LÄS MER

  2. 2. Three Dimensional Determinations of Inclusions in Ferroalloys and Steel Samples

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Yanyan Bi; KTH.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Three dimensional; Ferroalloy; Inclusion; Spinel inclusion; T hermodynamic calculation; REM clusters; Formation mechanism; Statistical analysis; Maximum size;

    Sammanfattning : As the requirements on material properties increase, there has been a demand on an additional knowledge on the effect of impurities in the ferroalloyson the steel cleanness. Thus, the number, morphology, size and composition of inclusions in sixdifferent ferroalloys (FeTi, FeNb, FeSi,SiMn, LC and HC FeCr) were investigatedin this study. LÄS MER