Tetsu-to-Hagané
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1883-2954
PRINT ISSN: 0021-1575

Tetsu-to-Hagané Vol. 53 (1967), No. 12

  • 随想

    pp. 1379-1380

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up
  • Thermodynamics of Liquid Iron Solutions

    pp. 1381-1392

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up
    x

    Readers Who Read This Article Also Read

    1. Prediction of the Thermodynamic Properties and Phase Diagrams of Silicate Systems–Evaluation of the FeO-MgO-SiO2 System ISIJ International Vol.33(1993), No.1
  • On the Rate of Absorption of Nitrogen in Liquid Iron and Iron Alloys, Containing Carbon, Silicon, Manganese and Chromium

    pp. 1393-1406

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up
    The rates of absorption of nitrogen in liquid iron and liquid iron alloys were measured for inductively melted iron under pure nitrogen at 1600°C.
    The experimental data show a linear correlation, which gives the apparent mass transfer coefficient, k′, when the variable, log [(Cs-Co)/(Cs-C)] is plotted vs F·t/V.
    The experimental values of the apparent mass transfer coefficient obtained for lower oxygen melts are as follows:
    k′=34-35×10-3 cm·sec-1 for 0.005-0.006% O
    k′=27-29×10-3cm·sec-1 for 0.008-0.013% O
    At present, it appears that the transfer of nitrogen across the gas/metal interface is controlled by the transport in the metal. Some models of gas absorption in liquid, such as the film theory, the penetration theory and the surface renewal theory, were taken into account to explain the present results.
    The effects of several alloying elements on the absorption rates were also measured. It is to be noted that carbon, chromium and manganese have practically little influence, silicon, however, has somewhat remarkable influence in the lower concentrations. Namely, mass transfer coefficient increases gradually as silicon increases and reaches the limiting value of 5×10-2 cm·sec-1 at about 2% Si. It seems reasonable to consider that silicon reduces oxygen poison effect which is caused by absorption of dissolved oxygen on the metal surface, even in low oxygen level (0.002% O).
    Transfer of nitrogen from gas into liquid iron may also be chemically controlled when the liquid iron contains some surface active agents. The role of surface active agents such as oxygen and sulphur will be discussed in the next paper.
  • Several Phenomena Taking Place in Remaining Molten Steel in Large Killed Steel Ingots during Solidification Process

    pp. 1406-1424

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up
    Several phenomena which take place in remaining molten steel in large killed steel ingots during solidification process have a great influence on those internal guality. Thus, it is essential in making sound steel ingots, to bring light on this problem.
    In this report, floatation of segregated molten steel and settling phenomenon of crystals was studied to which especial importance have been attached among those phenomena.
    The obtained results are as follows:
    i) During the solidification process of steel ingots, the comparatively fast movement of solutes in remaining molten steel is behaved, and the concentration gradient toward the top is formed in it.
    Such a phenomenon cannot be explained unless it is supposed that the segregated molten steel moves with some mass.
    As a mechanism of floatation, various things are thought. According to the result of authors' model experiment; it was shown that the floatation of segregated molten steel is acted even in static steel bath at velocity or the order of 10-2-10-1cm/sec which is able to explain various phenomena taking place in practical steel ingots.
    ii) It is assumed that the inertia flowing of molten steel taking place in pouring process has a great influence on the movement of solutes in remaining molten steel at the beginning of solidification process.
    iii) The theory that natural convection (thermal convection and solute convection) will take place in remaining molten steel during solidification process has been strongly supported. But it is still unknown how far it will mainly act.
    iv) So far the theory (gravity theory and convection one) that crystal particles are formed in remaining molten steel during solidification process, and that they settle down to form the negative segregation zone (settling crystal zone) is strongly supported. However according to the results of authors' experiments, such a conclusion was obtained that this theory has many problems, and it is rather unreasonable to explain various phenomena taking place during solidification process.
  • Theory of Solidification and Segregation

    pp. 1425-1441

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up
  • Dislocation Theory of Strength of Iron and Steel

    pp. 1442-1458

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up
  • 抄録

    pp. 1459-1463

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

Article Access Ranking

22 May. (Last 30 Days)

  1. Influence of Thermomechanical Treatment on Delayed Fracture Property of Mo-Bearing Medium-Carbon Steel ISIJ International Vol.62(2022), No.2
  2. Comparison of Oxidation Behavior of Various Reactive Elements in Alloys during Electroslag Remelting (ESR) Process: An Overview ISIJ International Advance Publication
  3. Interaction Coefficients of Mo, B, Ni, Ti and Nb with Sn in Molten Fe–18mass%Cr Alloy ISIJ International Vol.62(2022), No.3
  4. Fundamentals of Silico-Ferrite of Calcium and Aluminium (SFCA) and SFCA-I Iron Ore Sinter Bonding Phase Formation: Effects of MgO Source on Phase Formation during Heating ISIJ International Vol.62(2022), No.4
  5. Dissolution Kinetics of Synthetic FeCr2O4 in CaO–MgO–Al2O3–SiO2 Slag ISIJ International Vol.62(2022), No.4
  6. Removal of Inclusions using Swirling Flow in a Single-Strand Tundish ISIJ International Advance Publication
  7. Phenomenological Understanding about Melting Temperature of Multi-Component Oxides Tetsu-to-Hagané Vol.108(2022), No.4
  8. Assessment of Blast Furnace Operational Constraints in the Presence of Hydrogen Injection ISIJ International Advance Publication
  9. Influence of Acicular Ferrite Microstructure on Toughness of Ti-Rare Earth Metal (REM)-Zr Killed Steel Tetsu-to-Hagané Vol.108(2022), No.5
  10. Ironmaking Using Municipal Solid Waste (MSW) as Reducing Agent: A Preliminary Investigation on MSW Decomposition and Ore Reduction Behavior ISIJ International Advance Publication

Search Phrase Ranking

22 May. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. blast furnace permeability
  4. steel
  5. galvannealing
  6. jet impingement
  7. jet impingement + cooling + runout table
  8. nitrogen
  9. refractory
  10. valve spring steel