Sustainable Steel
…can be re-rolled for reuse. Rebar for construction are often produced in this way. Steel shipping containers are also being reused and converted into stores, site offices and even site…
Read MoreColdry technology for low rank coal drying
…extrusion. Extrusion – Extrusion is carried out of the coal slurry to produce pellets of optimal dimension for subsequent drying. Drying – Drying is carried out to evaporate the mobilized…
Read MoreBlast Furnace Tap Hole and Tapping of the Furnace
…simultaneously until the end of the tapping. The time elapsed from the start of the tapping until slag enters the runner is called the slag delay. Simultaneous – This pattern…
Read MoreMetal Forming and Metal Working Processes
…forward extrusion, (ii) indirect or backward extrusion, (iii) impact extrusion, and (iv) hydrostatic extrusion. Fig 13 shows direct and indirect extrusion and idealized ram displacement load curves. Fig 13 Direct…
Read MoreNormalizing Process for Steels
…the grain structure and to eliminate coarse grained microstructure got in previous working operations such as rolling and forging etc., (ii) to modify and improve cast dendritic microstructure and reduce…
Read MoreAnnealing of Steels
…the soft products of transformation are suppressed and the harder constituents i.e., bainite and martensite, are formed. These latter micro-structures are undesirable in the annealed structure. Fig 1 shows representative…
Read MoreMeasuring Instruments
in tension because of improper handling, over loading of the instrument, improper calibration, or faulty instruments. Instrumental errors are inherent in measuring instruments, because of their mechanical structure. Instrumental errors…
Read MoreX-Ray Fluorescence (XRF) Spectrometer
…fraction of the scattered tube spectrum reaches the detector and is present in the measured spectrum. In some cases, the tube lines of the spectrum interfere with lines coming from…
Read MoreIron Ore Pellets
…open pores. The reduction gas can quickly penetrate through these pores into the pellet core and simultaneously attack the structure in several places. The structural change begins very early at…
Read MoreDevelopments of Steelmaking Processes
called tool steel. The crucible process continued to be used for specialty steels, but is obsolete today. Another form of crucible steel was developed in 1837 by the Russian engineer,…
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