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Related Concept Videos

Steel Manufacturing01:26

Steel Manufacturing

392
Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
392
Portland Cement01:21

Portland Cement

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Portland cement is the essential binding ingredient in concrete, made from finely ground materials including lime, iron, silica, and alumina. Lime is derived primarily from limestone, marble, marl, seashells, and clays, which also supply iron and alumina, while silica is sourced from sand, chalk, and bauxite. Contemporary manufacturing of Portland cement is a significant source of carbon dioxide emissions, prompting research into reducing its content in concrete through alternative...
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Types of Cement II01:22

Types of Cement II

100
Portland blast-furnace cement is made by blending Portland cement clinker with granulated blast-furnace slag, which accounts for 25 to 65 percent of the cement's weight. Despite its similarities to ordinary Portland (Type I) cement in terms of fineness and setting times, its early strength is lower, though it achieves comparable strength later on. It's particularly suited for mass concrete structures and marine environments due to its lower heat of hydration and superior sulfate...
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Pozzolans01:21

Pozzolans

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Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is...
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Mass Concreting01:22

Mass Concreting

60
Mass concreting refers to the process of placing large volumes of concrete, such as in gravity dams. The heat generated during the cement hydration process and differential cooling rates within the concrete mass can lead to a temperature gradient, which can result in thermal cracks in the concrete mass.
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Manufacture of Concrete Masonry Units01:27

Manufacture of Concrete Masonry Units

88
The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
These wet blocks are then transported for curing, which can occur in one of two environments: a...
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The Influence of Heat Treatment Parameters on the Microstructure and Hardness of High-Chromium Alloy Steel X46Cr13.

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Updated: Jun 18, 2025

An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature
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Compound Castings for the Coke Industry.

Tomasz Wróbel1

  • 1Department of Foundry Engineering, Silesian University of Technology, 7 Towarowa Street, 44-100 Gliwice, Poland.

Materials (Basel, Switzerland)
|July 27, 2024
PubMed
Summary

This study explores compound casting of high-chromium steel and cast iron, revealing carbon and heat transfer as key to forming strong bonds. The developed technology is suitable for the coke industry.

Area of Science:

  • Materials Science
  • Metallurgy
  • Manufacturing Engineering

Background:

  • Compound castings offer advantages by combining properties of different materials.
  • Joining dissimilar metals like high-chromium steel and cast iron presents bonding challenges.
  • Existing methods may not be optimal for demanding industrial applications.

Purpose of the Study:

  • To investigate the technology of compound castings using X46Cr13 high-chromium steel and EN-GJL-HB 255 grey cast iron.
  • To identify and describe the mechanism of transitional zone formation in the bonding area.
  • To assess the suitability of this technology for the coke industry.

Main Methods:

  • Liquid-solid casting system with a pre-installed monolithic insert.
  • Microstructural analysis of transitional zones.
Keywords:
cast ironcokecompound castingsteel

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  • Mechanical testing and performance evaluation in industrial conditions.

    • Main Results:

    • The formation of a permanent bond is driven by carbon and heat transport from the molten cast iron to the steel insert.
    • A distinct transitional zone is formed at the interface between the two alloys.
    • Compound casting plates successfully operated in real coke plant conditions, validating their performance for coke quenching car lining.

    Conclusions:

    • The developed compound casting technology effectively joins high-chromium steel and grey cast iron.
    • Carbon and heat transfer are critical mechanisms for achieving a strong metallurgical bond.
    • The technology is a viable solution for wear-resistant components in the coke industry.