Results 91 to 100 of about 200,542 (260)

Characterization of Nonmetallic Inclusions in Ce‐Containing Steels at the Submicroscopic Level

steel research international, EarlyView.
Accurate detection of nonmetallic inclusions (NMIs) is crucial for ensuring high standards in steel cleanness and properties. Optimized automated SEM/EDS measurements are required for evaluating Ce‐containing NMIs. This study enhances the characterization of submicroscopic NMI in Ce‐alloyed ultralow‐carbon, high‐manganese, and electrical steels ...
Kathrin Thiele, Robert Musi
wiley   +1 more source

Prospects of Eliminating Fluorspar Consumption in a Sustainable Argon‐Oxygen‐Decarburization Process

steel research international, EarlyView.
This study aims at identifying pathways for eliminating fluorspar consumption in the argon‐oxygen‐decarburization (AOD) process. Thermodynamic calculations suggest the feasibility of completely replacing fluorspar with alternative fluxes such as Al2O3, Na2O, K2O, and Li2O of suitable amounts.
Yu‐Chiao Lu, Fredrik Engström, Jyrki Pitkälä, Mikael Ersson   +3 more
wiley   +1 more source

A Critical Review on Nitrogen Control in the Scrap‐Based Electric Arc Furnace Steelmaking Route to Produce Low‐Nitrogen Steels

steel research international, EarlyView.
In primary electric arc furnace (EAF) steelmaking, carbon boiling removes nitrogen from liquid steel and sustains slag foaming. In 100% scrap‐ or hydrogen direct reduced iron (HDRI)‐based EAF steelmaking, carbon boiling is absent; therefore, carbonaceous material and oxygen injection into the slag is needed to maintain foaming and avoid nitrogen ...
Zushu Li, Lei Guo, Jintao Gao, Yuri Korobeinikov   +3 more
wiley   +1 more source

Effect of Refining Slag Basicity on the Molten Steel Cleanliness of GCr15SiMn Bearing Steel

Teshugang
This article studies the effect of different refining slag basicity on the cleanliness of GCr15SiMn bearing steel by combining laboratory slag-steel equilibrium experiments and theoretical calculations.
Zhang Guolei, Guo Yunfei, Qiu Mian, Chen Gang, Cheng Guoguang, Zhang Tao   +5 more
doaj  

Effect of Fluxing Agent B2O3 on Melting Temperature of CaO-Based Refining Slag

Teshugang, 2009
Effects of B2O3 on melting temperature of two CaO-based refining slag series with low basicity [ ( CaO)/ (SiO2)=3 ~4] and high basicity [ (CaO)/(SiO2)= 5 〜7. 5 ] have been studied. Results indicate that B2O3is more available than Al2O3and CaF2to decrease
王宏明, 倪冬生, 赵湖, 李桂荣, 李波   +4 more
doaj  

On The Diffusivity of Boron in Slag During Silicon Refining

Journal of Sustainable Metallurgy
AbstractSlag treatment is one of the pyrometallurgical routes to refine and remove impurities (such as boron) from silicon. Many studies have demonstrated that the rate-controlling step in the process is the mass transfer of boron (B) in the slag phase. Hence, information regarding the B diffusivity is vital.
A. D. P. Putera, K. Avarmaa, H. T. B. M. Petrus, G. A. Brooks, M. A. Rhamdhani   +4 more
openaire   +1 more source

Atomic‐Scale Insights Into Tramp Element Segregation and Mechanical Performance of a Low‐Carbon Steel

steel research international, EarlyView.
Despite increased hardness, elevated tramp element concentrations in a ferritic‐pearlitic low‐carbon steel lead to enhanced toughness accompanied by a more homogeneous and finer ferritic microstructure. Atom probe tomography reveals pronounced segregation of some tramp elements at grain boundaries and ferrite–cementite interfaces, together with ...
Lukas Hatzenbichler, Maximilian Graf, Phillip Haslberger, Daniel Marian Ogris, Matthew Galler, Oleksandr Glushko, Ronald Schnitzer   +6 more
wiley   +1 more source

Hybrid Temperature Modeling for the Ruhrstahl–Heraeus Process: Coupling a Data‐Driven Approach With a Physics‐Based Process Model

steel research international, EarlyView.
A hybrid framework combining a mechanistic tanks‐in‐series model, thermodynamic data, and statistical learning methods was developed for continuous temperature prediction during RH vacuum treatment. The framework accounts for temperature changes caused by alloy additions, O2 blowing via top lance, and heat losses to the surroundings. Validation against
Daniel Kavić, Michael Bernhard, Hannes Prousch, Roman Rössler, Christian Bernhard   +4 more
wiley   +1 more source

Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review

Safety Science and Technology, EarlyView.
This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou, Erlei Su, Huanchun Liu, Xiangjun Chen, Lin Wang, Haidong Chen, Lin Li   +6 more
wiley   +1 more source

Influence of Refining Slag on Oxygen Content and Inclusions in Bearing Steel

Teshugang, 2008
The infuence of ingredient of refining slag(47～64CaO,13～23SiO215～25Al2O35～10MgO,0~ 8CaF2CaO/SiO2=2.0~4.5) on oxygen content and inclusions in 0.95C-1.50Cr CCr15 bearing steel has been tested and studied by MoSi2electrical resistance furnace with MgO ...
阮小江, 姜周华, 龚伟, 李阳, 李京社   +4 more
doaj