Steel Science Portal

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

Grid List Abstracts

ONLINE ISSN: 1883-2954
PRINT ISSN: 0021-1575

Tetsu-to-Hagané Vol. 53 (1967), No. 8

  • 鉄鋼の研究における材料試験の役割

    両角 不二雄

    pp. 971-972

    Bookmark

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

    Log in / Sign Up

  • Consideration on Decarburization Reaction in an Oxygen Converter and Possibility of the Computing Control on its Basis

    Takehiko FUJII, Taiji ARAKI, Katsukiyo MARUKAWA

    pp. 973-982

    Bookmark

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

    Log in / Sign Up

    Abstract

    Considerations and analyses were done on the mechanism of decarburization reaction in the oxygen steelmaking process by the data obtained from the laboratory work, the open hearth furnace, and the oxygen converter.
    Authors found that the blowing time of an oxygen converter could be specified into the three periods according to the characteristics of decarburization reaction which takes place in the vessel. Authors connected it with a control system for the converter practice, and named it “Decarburization Model System.”
    As the result of many trials, authors pointed out a possibility of computing control of bath carbon and temperature in this direction.

  • Dissolution of Steel Cylinder into Liquid Fe-C Alloy

    Mineo KOSAKA, Susumu MINOWA

    pp. 983-997

    Bookmark

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

    Log in / Sign Up

    Abstract

    Dissolution of solid steel cylinder into molten Fe-C alloy was investigated at the temperature from 1300°C to 1500°C.
    In this paper, the viscosity and the density of the melt and the diffusion coefficient of carbon were estimated from the literatures at the solid-liquid interface i. e. at the liquidus concentration of carbon, CL.
    Nondimensional correlation for the mass-transfer was analysed using above estimated physical properties and diffusion coeff.
    Correlation for the rotated or static cylinder was obtained as follows:
    JD= (k/U)(Sc) 2/3=0⋅064 (Re) -0.25
    102<Re<104: rotated cylinder
    Sh=0⋅11 (Gr.m×Sc) 1/3
    109<Gr·m × Sc<1011: static cylinder
    Utilizing the nondimensional correlation of a model test by benzoic acid-water system, the unknown ratesof stirring of molten Fe-C alloy melted by some laboratorial H. F. furnace could be roughly estimated from the rates of dissolution of steel cylinder.

  • On the Variations of the Components in the Inclusion

    Yasushi KOJIMA, Kokichi SANO

    pp. 997-1006

    Bookmark

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

    Log in / Sign Up

    Abstract

    After the equilibrium between molten iron and the systems FeO-MnO-SiO2 and FeO-MnO-CrO-SiO2 was established in the silica crucible at 1650°C, the temperature was lowered rapidly to 1550°C and this temperature maintained till the equilibrium was attained again. The variations of the concentration of the components in the liquid iron and slag were measured. The results obtained are summarized as follows:
    1) MnO and FeO were reduced in the system FeO-MnO-SiO2 slag by the excess silicon due to the lowering temperature at more than 0⋅18%, manganese in the liquid iron. The relation between reduction ratio of MnO and the concentration of silica was estimated. Up to 0⋅18% manganese, this excess silicon, however, was not sufficient to deoxidize, MnO was not reduced in this case.
    2) FeO, MnO and CrO were reduced in the system FeO-MnO-CrO-SiO2 slag by the excess silicon same as the system FeO-MnO-SiO2 in the case of 5%Cr. But in cases of 9% and 14% Cr, the reduction of these oxides did not occur. It was considered that the new phase was formed at the boundary of both phases.
    3) It was anticipated from the experimental results obtained above that the equilibrium between inclusion and molten iron was established fast. The mechanism of the formation of oxide inclusions composed of FeO-MnO-SiO2 system were examined experimentally by addition of deoxidizers. The results showed that if the processes of formation of oxide inclusions composed of FeO-MnO-SiO2 system were examined experimentally by addition of deoxidizers. The results showed that if the processes of formation of inclusions could be known, based on the equilibrium data, the components of inclusion could be evaluated from the concentration of dissolved elements in the liquid iron.

  • Effect of Impurities on the Secondary Recrystallization in Silicon Iron

    Takashi MATSUOKA

    pp. 1007-1023

    Bookmark

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

    Log in / Sign Up

    Abstract

    An investigation has been made on the effects of impurities on the development of (110)[001] secondary recrystallization texture in silicon iron. While dispersed inclusions, TiC, VN, NbC, and A1N, were observed to have the ability to promote secondary recrystallization, BN and ZrC, have not. Necessary amounts of impurity elements were found to be 0.04% Ti, 0.07% V, and 0.02% Nb, respectively. The solubility products [%M][%C] or [%M][%N](M: impurity element) of effective inclusions were estimated to be from 10-3 to 10-5 at the secondary recrystallization temperature. Inclusions of the order of 0.1 micron in size were observed to be dispersed more densely than 1012 particles/cm3 in final gauge strips in which secondary recrystallization occurred appreciably.

  • Crystal Structures of Nonmetallic Inclusion in Iron and Steel, and its Homologue

    Kiichi NARITA

    pp. 1024-1055

    Bookmark

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

    Log in / Sign Up

    Recommended Articles: 表面処理・その他 [ View more ]

    x

    Readers Who Read This Article Also Read

    1. 表面処理・その他 Tetsu-to-Hagané Vol.52(1966), No.11
    2. Kinetic Study of the Decarburization of Liquid Iron Tetsu-to-Hagané Vol.52(1966), No.12
    3. II 連続鋳造の凝固について Tetsu-to-Hagané Vol.56(1970), No.4

  • Review of Steam Ejector for Vacuum Degassing Process

    Yoshio OKU

    pp. 1056-1069

    Bookmark

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

    Log in / Sign Up

  • 抄録

    pp. 1070-1074

    Bookmark

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

    Log in / Sign Up
  • © 1967 The Iron and Steel Institute of Japan

Article Access Ranking

21 Aug. (Last 30 Days)

  1. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  2. Formation Mechanism of Oxide Inclusions in Cr–Mn–Ni Stainless Steel ISIJ International Advance Publication
  3. Shrinkage Distribution of Sintering Bed Evaluated by X-ray CT Observation ISIJ International Advance Publication
  4. Understanding the Structure and Structural Effects on the Properties of Blast Furnace Slag (BFS) ISIJ International Vol.59(2019), No.7
  5. Influence of Shape of Cohesive Zone on Gas Flow and Permeability in the Blast Furnace Analyzed by DEM-CFD Model ISIJ International Vol.55(2015), No.6
  6. Observation of Deadman Samples in a Dissected Blast Furnace Hearth ISIJ International Advance Publication
  7. Analysis of the Coke Particle Size Distribution and Porosity of Deadman Based on Blast Furnace Hearth Dissection ISIJ International Advance Publication
  8. Numerical Investigation of Effect of Casting Speed on Flow Characteristics of Molten Steel in Multistrand Tundish ISIJ International Vol.59(2019), No.7
  9. Applicability of Time-Gated Raman Spectroscopy in the Characterisation of Calcium-Aluminate Inclusions ISIJ International Advance Publication
  10. Coke Microstructure and Graphitization Across the Hearth Deadman Regions in a Commercial Blast Furnace ISIJ International Advance Publication

Search Phrase Ranking

21 Aug. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. mold
  5. continuous casting
  6. flatness control
  7. steelmaking
  8. jats
  9. oxygen coordination number of fe ions
  10. steel