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2 edition of Low-sulfur pressure vessels steels by the electroslag and electric-arc-furnace processes found in the catalog.

Low-sulfur pressure vessels steels by the electroslag and electric-arc-furnace processes

R. H. Nafziger

Low-sulfur pressure vessels steels by the electroslag and electric-arc-furnace processes

by R. H. Nafziger

  • 292 Want to read
  • 18 Currently reading

Published by Dept. of the Interior, Bureau of Mines in [Washington] .
Written in English

    Subjects:
  • Pressure vessels.,
  • Steel -- Electrometallurgy.

  • Edition Notes

    Bibliography: p. 33-34.

    Statementby R. H. Nafziger and P. E. Sanker.
    SeriesReport of investigations - Bureau of Mines ; 8385, Report of investigations (United States. Bureau of Mines) -- 8385.
    ContributionsSanker, P. E., United States. Bureau of Mines.
    The Physical Object
    Pagination34 p. :
    Number of Pages34
    ID Numbers
    Open LibraryOL17798022M

    To produce a ton of steel in an electric arc furnace requires approximately kilowatt-hours per short ton or about kWh per metric tonne; the theoretical minimum amount of energy required to melt a tonne of scrap steel is kWh (melting point °C/ °F). Low alloy weldable (pressure vessel) steels will need preheating to avoid hydrogen cracking, and may be prone to reheat cracking if they contain vanadium with molybdenum. Engineering steels (medium to high carbon, with or without alloying elements) have a high risk of hydrogen cracking; liquation cracking is likely, as is solidification.

    Mar 16,  · Steel Making: Lecture stainless steel Production by Electric Arc Furnace alone 1. MY: Steel Making Processes Lecture No: 18, 10 Feb What is Stainless Steel? • Stainless steel is the name given to a group of corrosion resistant and high temperature steels. This refers to the engineering and alloy steel used for building structure, including the weldability of high-strength alloy structural steel, alloy steel, railway alloy steel, geological drilling alloy steel, pressure vessel alloy steel, high manganese steel, etc. This kind of steel .

    The electric arc furnace is the most important scrap recycling process. In the developed world, % steel scrap is the most common charge. The situation is not the same in the emerging countries, where scrap is not always available in the required amount; alternative materials like DRI, HBI, pig iron, and hot metal take part in the ashleyllanes.com by: Figure Overview of integrated works process routes ~" *" ”, 7 Figure Typical integrated works materials flowchart 8 Figure Sinter plant showing main emission points 11 Figure Typical blast furnace 15 Figure Electric arc furnace steel making process


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Low-sulfur pressure vessels steels by the electroslag and electric-arc-furnace processes by R. H. Nafziger Download PDF EPUB FB2

Get this from a library. Low-sulfur pressure vessels steels by the electroslag and electric-arc-furnace processes. [R H Nafziger; P E Sanker; United States. Bureau of Mines.]. Bureau of Mines research has shown that very low-sulfur pressure vessel steels with improved mechanical properties can be prepared by two melting processes.

Four pressure vessel steels having sulfur contents ranging from to wt-pct, were produced by the electric-arc furnace or by the electroslag processes.

Low-sulfur pressure vessel steels by the electroslag and electric-arc-furnace processes /Author: R. Nafziger and P. Sanker. Bureau of Mines research shows that very low-sulfur pressure vessel steels with improved mechanical properties can be prepared by two melting processes.

Four pressure vessel steels having sulfur contents ranging from to wt %, were produced by the electric-arc furnace or by the electro-slag processes. Refining steels produced in Electric Arc Furnace Desulphurization is based on the use of elements with higher affinity to sulfur than iron, such as Mn, Ca, Ba, Mg and Lanthanide.

Resulting sulphides are not soluble in steel and are absorbed by the slag. EFFECTIVE STEEL PRODUCTION IN THE ELECTRIC ARC FURNACE Solutions from REINHAUSEN for process safety in steel production.

STABLE AND EFFICIENT PRODUCTION IN THE ELECTRIC ARC FURNACE. Running an electric arc furnace represents a challenge for the smelting works' power supply. The electric arc voltage has to be regulated ideally to avoid grid.

Modelling of the Protective Gas Electro Slag Remelting Process and Its Validation 5 Table 1 Process data of the experimental ESR In the steady state the pool profile should be stable. The profile itself can be reconstructed by the dendritic structure, because the preferred main direction of the dendrites is against the heat flow.

Impact of electro slag remelting on 14 steel properties. metallurgical slag in electroslag remelting ashleyllanes.com Iron and. The properties of dust generated electric arc furnace. Melting, Remelting, and Casting for Clean Steel. low-sulfur metal).

Regrettably, the addition of Mg gen- steel shell as the pressure vessel for counter-gravity casting of.

Electric arc furnace (EAFs) are widely used in steelmaking and in smelting of nonferrous metals. The EAF is the central process of the so-called mini-mills, which produce steel mainly from scrap. Electroslag remelting is a method of smelting by using the resistance heat generated by the current passing through the slag as the heat source,The main purpose is to purify the metal and obtain uniform and dense ashleyllanes.com electroslag remelting steel has high purity, low sulfur content, less non-metallic inclusions, smooth surface, clean, uniform and dense steel ingot, uniform microstructure and.

Project Fact Sheet NITROGEN CONTROL IN ELECTRIC ARC FURNACE STEEL- MAKING BY DIRECT REDUCED IRON FINES INJECTION NEW TECHNOLOGY MAY REDUCE OPERATING COSTS AND INCREASE PRODUCTIVITY IN BAR AND FLAT-ROLLED PRODUCTS FOR THE STEEL INDUSTRY Nitrogen, even in small quantities, is detrimental to the quality of steel.

Hence, Rohde et al. () have investigated the use of electric arc furnace (EAF) steel slag as base material for low-volume roads. The results of their study led to the conclusion that the use.

Electroslag & Electric Arc Furnace Processes Demand for pressure vessel steels for use in power generation and energy transport applications is increasing in the United States. Coupled with the increased demand is the requirement for higher quality steels that are better able to withstand temperature extremes and mechanical stresses, and that.

One important method for achieving higher quality pressure vessel steels is to decrease the sulfur content. Low sulfur levels decrease inclusions, and therefore minimize lamellar tearing susceptibility, improve notch toughness, improve other mechanical properties, decrease surface cracking, and improve hot forgeability.

Three advanced steel-melting processes - low-sulfur vacuum silicon deoxidation, electroslag remelting, and vacuum carbon deoxidation (VCD) - were applied to produce three CrMoV (ASTM A, Class 8) steel forgings for steam turbine application. The effect of frequencies of AC power supply on the quality of the electroslag-melted ingot is studied.

The results show that with a decrease in the frequency, electromagnetic force becomes more violent, and the temperature in the slag bath becomes more homogeneous, and therefore, the depth of molten metal pool is decreased; electrochemical reactions occur with the decrease in the frequency Cited by: Melting practices have also improved over the past 55 years.

There have been dramatic advances in the processing of steels. The commercialization of many processes has led to considerably cleaner, and more notch-tough, materials. Among the primary steel melting processes are the electric arc furnace and the basic oxygen ashleyllanes.com by: 2.

The following conclusions can be drawn from the study: (1) the submerged-arc strip welding process can be used successfully to clad Cr–lMo steel with L and stainless steels and defect-free deposits can be obtained, (2) in the as welded condition, the microstructural constituents of HAZ, fusion line, and overlay are bainite and.

@article{osti_, title = {Current forgings and their properties for steam generator of nuclear plant}, author = {Tsukada, Hisashi and Suzuki, Komei and Kusuhashi, Mikio and Sato, Ikuo}, abstractNote = {Current steel forgings for steam generator (SG) of PWR plant are reviewed in the aspect of design and material improvement.

The following three items are introduced. Carbide precipitation can reduce the impact strength of Type steel to a moderate extent at very low tempera- tures, but Types L, L and low- carbon Type .The processing history of both of these steels is documented.

The ESR steel was commercially heat treated, and the EF steel was laboratory heat treated. Typical microstructures and cleanliness comparisons are shown. The ESR and EF steel were heat treated to Cited by: 1.Stone & Steel Buster is the leading technology for breaking any type of skulls from; blast furnace, refining, reduction and casting processes.

Focus is to break the skulls as early as possible. There will be less need for expensive balling processes, no need for expensive transporting of the skulls, less wear of handling equipment and less need.