نتایج جستجو برای: ordinary steel
تعداد نتایج: 130370 فیلتر نتایج به سال:
Axially moving strips are frequently encountered in industry for various applications. On the one hand, accurate models of transverse displacements of strips are desired for plant design and safety or reliability reasons. On the other hand, the models may serve as a basis for model-based controller and observer design. For the latter also, the complexity of the models should be as low as possib...
Steel has remained the most crucial of all structural materials. However, the steel production processes have changed over the years. Currently, due to the tendency of eliminating high energy consuming technologies, in both the international and domestic steel industry, liquid steel is manufactured in two basic aggregates: oxygen-blown converters and electric arc furnaces 1 . The development of...
This article presents the temperature and emissivity estimation of metals around their melting points using different techniques, which are based on deterministic (ordinary least squares) Bayesian approaches. Linear non-linear models examined. The experimental data consist radiative fluxes at six wavelengths, collected by a pyrometer. apparatus is dedicated to characterization physical properti...
• Introduction • Steel Composition and Mechanical Properties • Welding of Steel • Microstructure of NUCu-OSM Steel • Estimate of Atmospheric Corrosion Resistance of NUCu-OSM Steel • Summary • Acknowledgment • References • Appendix 1. Monotonic Tensile Stress-Strain Curves for NUCu-OSM Steel • Appendix 2. Steel Compositions and Concentration Ranges in Data Bases Used for Atmospheric Corrosion Ra...
An increasing number of industrial applications need superstrength steels. It is known that refined grains and nanoscale precipitates can increase strength. The hardest martensitic steel reported to date is C0.8 steel, whose nanohardness can reach 11.9 GPa through incremental interstitial solid solution strengthening. Here we report a nanograined (NG) steel dispersed with nanoscale precipitates...
Gh. H. Popescu, E. Nicolăescu, Dimitrie Cantemir Christian University, Bucharest; E. Nica, Bucharest University of Economic Studies; G. Lăzăroiu, Spiru Haret University, Bucharest, Romania The theory that we shall seek to elaborate here puts considerable emphasis on technological features of China’s steel production, its emergence as the world’s most significant steel producer and main manufact...
At present, the scattered and closed steel logistics resource should be integrated. Reasonable benefit allocation mechanism is the prerequisite for steel logistics resources integration. Based on previous studies on steel logistics resource integration, this paper proposes an important problem in steel logistics resources integration: benefit distribution. First, this paper gives the classifica...
The corrosion of steel reinforcement in an aging highway infrastructure is a major problem currently facing the transportation engineering community, in particular bridge engineers. In the United States, maintenance and replacement costs are measured in billions of dollars. Further, the use of deicing salts has resulted in steady deterioration of bridge decks due to corrosion. These concerns ha...
This investigation compared four conventional vehicle armour materials for performance under blast loading. The parameters measured were resistance to deformation, mechanical toughness and metallurgical microstructure. It was found that two of these, the M steel and A steel, showed the least deformation and M steel showed better shock energy absorption. B steel had high toughness but showed sig...
The structural behavior fire-resistant steel is essential; fire-resistant steel is proven to have higher strength at elevated temperature than that of conventional steel. Also, the requirement of fire protection in the fire-resisting steel can be relaxed as compared with conventional steel structures. However, the design criteria for the application of the fire-resisting steel in steel columns ...
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