This research focuses on the diffusion patterns of the adjacent generations of technology and its relation to the time that elapses between them (intergeneration time). The authors analyze 45 new technologies in 15 industries and find that the adoption curves systematically vary across generations from 2 years for dynamic random-access memory (DRAM) chips to more than 30 years for steelmaking. ...

This paper describes the adsorption of two organic (acetic and citric) acids on the blast furnace sludge, a representative by-product of the steelmaking industry. By PIXE, XRD, BET and SEM methods, it was shown that blast furnace sludge is a complex heterogeneous material with a specific surface area of s = 31.46 m g, composed mainly of amorphous phase (w = 76.2 %), calcite (w = 9.9 %), magneti...

Y. Xu, H. J. Wu, F. Yue, Engineering Research Institute, University of Science and Technology Beijing, Beijing, China Z. R. HUO, No. 2 Steelmaking Plant, Shanxi Taigang Stainless Steel Co. Ltd., Taiyuan, China This paper focuses on physical modeling of oscillation effect. Two new similarity criterions, π1 = fl / v and π2 = A / l, characterizing the effect of frequency and amplitude respectively...

These days, limited energy resources, and also the cost of investment in new and renewable energy is very costly and uneconomical. In the industrial sector, especially energy-intensive industries such as steel, finding appropriate solutions to update the technology, production and reduce energy consumption in this sector is very important. The main aim of this study is the identification an...

These days, limited energy resources, and also the cost of investment in new and renewable energy is very costly and uneconomical. In the industrial sector, especially energy-intensive industries such as steel, finding appropriate solutions to update the technology, production and reduce energy consumption in this sector is very important. The main aim of this study is the identification an...

In this work the effects of controlled rolling parameters and adding of Niobium have been studied. In this order two steel grades with and without Niobium are planed and after steelmaking and continuous casting, rolling process are done. Then, laboratory investigations such as microstructure, mechanical properties and grain size analysis were performed Tensile and Charpy impact tests specimens ...

This paper focuses on the implications of learning processes for technological capability accumulation and performance improvement. These relations are evaluated through a single case study in the steelmaking unit of Companhia Siderúrgica Nacional (1997-2001). Recently developed frameworks in literature on technological capability accumulation and learning processes have been used, but adapted ...