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Peddolla Prachethan Kumar, Yogish Sooryanarayan Rao, Sagar Chandra Barman, Gururaj Hosabettu, Sekhar Vadarevu, and Madhu Ranjan:
Influence of operational parameters on the performance of the Corex reduction shaft
Corex, reduction shaft, reduction gas flow, reduction gas temperature, pressure drop, gas distribution, resistance to gas flow
Smelting reduction (SR) processes were developed with the objective of eliminating the need for coke, since the good quality coking coal reserves are limited and depleting fast. The SR processes operate with coal to meet the thermal and reducing requirements. Corex is one of such SR processes which emerged as a commercially viable iron making technology. It consists of two reactors: the reduction shaft and the melter-gasifier. The reduced iron bearing material from the reduction shaft is charged into the
| STEEL GRIPS 8 (2010) p. Process technolgy 94/98 |
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Gerri H. Tappe:
New developments in welding technology, profound base to enhance chances
GMA welding, submerged arc welding, cutting, welding power sources, torches, automation, robots, gases, electron beam, laser-beam welding and cutting devices, protection equipment, welding workplace equipment, non-destructive and destructive testing, knowledge exchange
Good mood dominated the 17th International Essen Welding Fair, thus delighting the 1015 exhibitors. Before the beginning of the exhibition which started on September 14th under the clouds of the worldwide economic crisis, many firms were still uncertain whether this year’s involvement would pay off. However, the number of visitors on the second and third days of the fair was already slightly above those of the preceding event in 2005. Upon completion, the organizer was able to announce around 6,0000
| STEEL GRIPS 7 (2009) No. 6, p. 415/19 |
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First commercial ITmk3 plant begins production
First commercial ITmk3 plant begins production
Jan 20, 2010
The world's first commercial plant using the ITmk3 Process began production of iron nuggets in Hoyt Lakes, Minnesota, USA.
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Stéphane Graff and Franz-Josef Lenze:
Simulating the hot stamping process of high-strength 22MnB5: From hot stamping to crash-simulations
Hot stamped components; material characterisation, simulation of hot forming process and crash behaviour; experimental results ...
Going through several aspects of the virtual design chain of hot stamped components, the necessary and often critical points and problems related to the material characterisation and to the simulation of the hot forming process and of the crash behaviour are discussed. Then, the experimental results and simulations of hot stamping laboratory tests on two different geometries are shown and analysed in terms of thinning, temperature distribution, microstructure development and final hardness.
| STEEL GRIPS 7 (2009) No. 1, p. 28/32 |
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Franz-Josef Lenze, Sascha Sikora, Janko Banik, Oliver Straube:
Hot forming - new potentials for innovative manufacturing
Hot forming, process parameter, part analysis, partial austenitizing, thermal imaging
Hot forming has established itself as an important manufacturing technology for body-in-white (BIW) parts. The main advantage is the ultra-high strength of the parts combined with excellent accuracy after the forming step. Hence, adequate process control is indispensable to ensure appropriate part properties. Thermal imaging represents a suitable implement for process monitoring and the understanding of the various parameters influencing temperature behaviour. This device supplies qualitative indications of the thermal conditions with part or tool, especially for R&D activities. Further
| STEEL GRIPS 7 (2009) No. 6, p. 428/32 |
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D. Satish Kumar, Sundaresan S., Vasa S. N. Murthy, Prabhat K. Ghorui, and Madhu Ranjan:
Pretreatment of hot metal
Hot metal pretreatment, desiliconisation, dephosphorisation
In present times, the products of most of the iron making units are characterised by high silicon and phosphorus contents, due to poor raw material characteristics. Removal of these impurities increases the processing time at the converter and ladle treatment. Additionally, increasingly stringent quality requirements have heightened the demand for steels with very low levels of impurities, such as phosphorus, sulfur, hydrogen, nitrogen, oxygen, and of non-metallic inclusions. To improve hot metal characteristics, several attempts to pretreat the hot metal
| STEEL GRIPS 7 (2009) No. 2, p. 107/13 |
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JFE Steel to blow in No.3 blast furnace at West Japan Works (Kurashiki)
Dec 24, 2009
JFE Steel Corporation’s No.3 blast furnace at the company’s West Japan Works (Kurashiki), will be blown in for a fourth campaign beginning in mid-February 2010.
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