Results 81 to 90 of about 3,295 (275)

Recycling‐Induced Copper Contamination of a 42CrMo4 Quench and Tempering Steel—Scaling and Susceptibility to Hot Shortness

open access: yessteel research international, EarlyView.
In this study, the susceptibility to copper‐induced hot shortness of the alloy 42CrMo4 is investigated by different hot tensile tests, as well as by a detailed analysis of the formed oxidation products. While an enrichment of metallic copper and a penetration of the grain boundaries are observed, no critical reduction of the tensile test properties can
Alexander Gramlich   +6 more
wiley   +1 more source

Chemical and electrochemical pathways to low-carbon iron and steel

open access: yesnpj Materials Sustainability
Currently, the iron and steel industry is responsible for 7% of global CO2 emissions. In this review, we summarize the operational principles of current emissions-intensive steelmaking technologies and review emerging low- and zero-carbon technologies ...
Kerry Rippy, Robert T. Bell, Noemi Leick
doaj   +1 more source

Multi-Objective Constrained Optimization Model and Molten Iron Allocation Application Based on Hybrid Archimedes Optimization Algorithm

open access: yesMathematics
The challenge of distributing molten iron involves the optimal allocation of blast furnace output to various steelmaking furnaces, considering the blast furnace’s production capacity and the steelmaking converter’s consumption capacity.
Huijuan Hu, Shichao Shi, He Xu
doaj   +1 more source

Belmont Furnace

open access: yes, 1920
Reproduction of a photograph depicting Belmont Furnace in Belmont County, Ohio from the opposite bank of the Ohio River, ca. 1900 - 1935. Belmont furnace was constructed in 1857.

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Alteration of Phase Transformation Behavior and Prior Austenite Grain Structure Due to Elevated Tramp Element Concentrations in a Hypoeutectoid Steel

open access: yessteel research international, EarlyView.
The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler   +7 more
wiley   +1 more source

Pine Grove Furnace Ruins

open access: yes, 1920
Reproduction of a photograph depicting a group of picnickers at the ruins of Pine Grove Furnace in Lawrence County, Ohio, ca. 1905. Pine Grove Furnace was built in 1828. Wilbur Stout, former chemist at the Columbus Iron and Steel Company and Ohio's state

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Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

open access: yessteel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt   +6 more
wiley   +1 more source

Characteristics of High-Temperature Torrefied Wood Pellets for Use in a Blast Furnace Injection System

open access: yesEnergies
As the iron and steel industry needs to cut its CO2 emissions drastically, much effort has been put into establishing new—less greenhouse-gas-intensive—production lines fueled by hydrogen and electricity.
Richard Deutsch   +4 more
doaj   +1 more source

Using Thermodynamics and Microstructure to Mitigate Overfitting in Pellet Reduction Models

open access: yessteel research international, EarlyView.
A in time and space discretized, thermodynamically sound model for direct reduction of iron oxide pellets is described. The number of fitting parameters is drastically reduced compared to existing models. Nevertheless, fitting kinetic parameters based on conversion degree data alone leads to overfitting, which can be mitigated by correlating the ...
Ömer K. Büyükuslu   +4 more
wiley   +1 more source

Numerical analysis-based evaluation of combustion and gasification characteristics of pulverized coal and coke in the raceway region

open access: yesFuel Processing Technology
Steelmaking is essential to modern society but remains a major CO₂ emitter. To mitigate this, technologies like hydrogen-based steelmaking and alternative reducing agents are being explored.
Hiroki Umetsu   +8 more
doaj   +1 more source

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