Siderite ore is a typical and widely available refractory iron ore. In consideration of the growing demand for iron ores and the increasing pressure to reduce emissions in the steel industry, a green‐technology‐based utilization of siderite ore as an electric arc furnace (EAF) burden by applying carburization roasting and magnetic separation processes is proposed. Under optimized conditions, an electric

The non‐reactive CaO‐Al2O3 based mold flux system has been proposed to avoid the reaction problems during the casting process of advanced high strength steels, when conventional CaO‐SiO2 based mold flux system has been applied. However, new problems like low consumption and insufficient lubrication have been introduced during the industrials of CaO‐Al2O3 based mold fluxes, which is closely associated

In this paper, an improved thermal‐mechanical coupled analysis is used to increase the calculation efficiency of detailed Laser Melting Deposition (LMD) process. By optimizing the loading process of laser heat source and lumping several deposited layers into an equivalent numerical layer, the efficiency is significantly improved. The calculation time can be saved by 85% when lumping six layers. Compared

The mechanical properties after tempering and intercritical annealing of medium manganese steels with 4wt.‐% Mn for forging applications are presented. After forging with subsequent air cooling, heat treatments were performed, specifically tempering from 250∘C and 450∘C and intercritical annealing between 600∘C and 675∘C. Tensile properties, Charpy V‐notch impact toughness and hardness were determined

Duplex stainless steels (DSS) have a two‐phase microstructure of ferrite and austenite which results in a high strength combined with high ductility and good corrosion resistance. However, when DSS are heated to an inappropriate temperature range, e.g. during welding, the brittle sigma phase forms which deteriorates the mechanical properties. In the present work, a heat treatment is performed to intentionally

2101 duplex stainless steel with low Ni content is developed to replace austenitic stainless steel in many corrosive environments. In this work, we study the effects of Ce addition on the microstructure and corrosion resistance of 2101 duplex stainless steel. The electrochemical corrosion behavior of 2101 duplex stainless steel with Ce contents of 0 wt%, 0.005 wt%, and 0.020 wt% is studied in 3.5 wt%

Hot crack formation in continuously cast steel is significantly influenced by the mechanical properties of the solid shell near its solidus temperature. A new method to study the high temperature mechanical behavior of the solidifying steel shell is introduced in the present work. In this method, an apparatus was designed utilizing an electric cylinder that is controlled by a servo‐motor to apply a

We demonstrate the establishment of data‐driven prediction and explanation models for three essential process variables in ironmaking blast furnace processes, namely hot metal temperature, silicon concentration and cooling capacity. Aside a reliable prediction quality of the models with sufficient prediction horizon, an additional main goal has been to establish interpretable and revealing models,