Key Steel Manufacturing Technologies by Collaborative Innovation – serie

The book is an authoritative introductory work on electroslag remelting technology for high-quality special steels. It comprises 9 chapters that cover the electroslag remelting technology and propose two innovative process theories. The first is the cleanliness control theory with invariable process parameters, and the second is the homogenization solidification theory of shallow molten pool at ultrafast cooling and optimal melting speeds, both of which were developed by the authors.Based on these two theories, the book introduces relevant fundamental theories for the regulation of composition homogenization, cleanliness, solidification microstructure, and quality control technology for typical steel grades. In particular, it provides detailed information on electroslag remelting equipment and technologies for totally enclosed protective atmosphere, extra-thicksteel slabs, extra-large ingots, solid and hollow ingots.

This book introduces the technologies and processes of solid-phase bonding of layered metal, primarily focusing on four types of layered metal plate: heavy steel plate, stainless steel clad plate, nickel-based alloy clad plate, and titanium/steel clad plate. It investigates and analyzes various factors affecting the microstructure and properties of the bonding interface, including the surface condition of the plate, welding technique, pass reduction, total reduction, vacuum degree, rolling temperature, post-rolling cooling method, annealing temperature, etc. The book provides a comprehensive explanation and refinement of the technologies and mechanisms of vacuum rolling cladding from basic theory, laboratory research to industrial trials and applications. It also explores the application and future prospects of this technology in related fields. This book serves as a valuable reference for university faculty and students, researchers, engineering technicians, and enterprise managers engaged in the foundational and applied research of layered metal cladding processing technology.

This book systematically describes and discusses the influences of alloying elements and atmospheres on the oxidation behaviors of hot-rolled steels. The findings can aid in designing new compositions to improve oxide scale adhesion to steel substrates. The effects of rolling temperatures and deformation reductions on oxide scale integrity are also studied in detail. The book describes technologies for producing pickling-free and easy-pickling steels. The author develops and fine-tunes a numerical simulation for anisothermal oxidation behaviors using classical theories on oxidation kinetics and industrial data. This can accurately predict the evolution of scale thickness during hot rolling and the phase transformation of oxide scale during cooling. Finally, the book discusses processing windows for scale control to comprehensively improve surface quality of plates, hot coils, and wires. This book is suitable for personnel engaged in steel research and development and as a reference for post-graduates in related fields.

This book mainly introduces pioneering technologies in the field of efficient utilization of iron ore, specifically including suspension magnetization roastingtechnology and equipment of complex refractory iron ore, coal-based reduction technology of extremely refractory iron ore, green preparation of super iron concentrate and clean steel base material, energy-saving grinding technology and equipment of new ceramic ball stirring mill, stepped flotation of carbonate-containing hematite and other common key technologies in mineral processing. This book comprehensively elaborates and refines the above-mentioned technologies and equipments from the basic theory, laboratory research, to the semi-industrial test and industrial test level.This book can be read for reference by college teachers and students, researchers, engineering technicians and enterprise administrators in the fields of basic research and applied technology research on the iron ore resource processing.

This book systematically summarizes and condenses the groundbreaking work the author and their research team have done in recent years in the profound reduction of iron ore. In response to the challenges of utilizing certain iron ore resources in China that are difficult to process using conventional beneficiation methods, this book introduces the concept of profound reduction. By employing advanced detection technologies and methods such as software simulation, image analysis, and micro-area composition analysis, the book uncovers key scientific issues in the reduction process. These include the phase transformation, the measurement and control of iron particle size, the migration of phosphorus elements between phases, and the thermodynamic and kinetic mechanisms. It also details the development of a series of new profound reduction technologies and the establishment of a comprehensive theoretical and technical framework for the profound reduction of iron ore. This book is a valuable reference for university faculty and students, researchers, and engineering professionals engaged in fundamental and applied research in mineral processing engineering and metallurgical engineering.

In this book, the formation causes and the control principles of the surface crack defects of micro-alloyed steel slab, such as the transverse corner cracks, longitudinal depressions in the wide-face off-corners, and the hot charging cracks were discussed. On this basis, the key technologies for the slab surface defects control were proposed. The contents of the book included the control technology for the transverse corner crack of conventional and wide and thick slabs of micro-alloyed steel, the control technology for thin slab corner crack of micro-alloyed steel, the control technology for wide-face longitudinal off-corner depression of thick slab, as well as the control technology for hot charging crack of micro-alloyed steel slab. This book can be read for the technical developers and scientific researchers engaged in slab continuous casting production of steel, and can also be used as a reference for teachers and students in colleges and universities of related majors.

This book summarizes the formation of solidification defects in continuous casting strand and the process mechanism of improving central segregation, porosity and shrinkage under solidification end reduction. The behavior rules of shell deformation, crack initiation and propagation, solute transport, shrinkage cavity closure, microstructure refinement and evolution during solidification end reduction process were systematically expounded. It introduces how to realize the accurate, efficient and stable implementation of the solidification end reduction in the production process, and the design and development of key equipment. Finally, taking the specific production lines of Baosteel and Panzhihua Iron and Steel Co., Ltd. as examples, the industrial application and effect of solidification end reduction technology are listed.