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2013SUMMER TRAINING REPORT10th June to 25th July, 2013[pic 1][JINDAL STAINLESS LIMITED, HISAR]VIJAY MAKKEDCONTENTSACKNOWLEDGEMENTABOUT JSL, HISARPROCESS AT JSL, HISARPRODUCTSSMS DIVISIONHOT ROLLING DIVISIONCOLD ROLLING DIVISION      ACKNOWLEDGEMENTFirst of all, I would like to express my heartfelt gratitude to Shri Rajiv Rajvanshi for recommending me for this internship. I would like to thank Mr. Abhishek Sharma for his help throughout the period. To Mr. Varun for being my mentor and explaining the complete process involved in the SMS as well as Hot Rolling Division. I would also acknowledge the efforts of Mr. Manak Garg and his Team for providing with the required study materials as well as helping me grasp the mechanical concept behind the equipment installed.

ABOUT JSL HISARJindal Stainless is India’s largest producer of stainless steel in 200, 300, 400 and duplex grades. A leader and a name synonymous with enterprise, excellence and success, it is innovative, versatile, strong and unrelenting both in its thoughts and its operations. The Hisar plant is India’s fully integrated stainless steel plant with a capacity of 800,000 tons per annum. The product range includes Slabs & Blooms, Hot Rolled Coils, Strips, Plates and Cold Rolled Coils. It is also the world’s largest producer of stainless steel strips for razor blades and also of coin blanks.PROCESS @ JSL, (OVERVIEW)[pic 2]Steel was first melted in an ultra-high powered Electric Arc Furnace with co-jet facility. For refining, it utilized top and bottom blown Argon-Oxygen Decarburization (AOD) Converter. It was interesting to see the refining of molten steel in the Ladle-Refining furnace in which the Ladle used to carry molten metal is used with a cap having three electrodes which carry the current required to refine the melt.In addition, I also saw the Vacuum-Oxygen Decarburizing (VOD) unit which is employed for achieving very low contents of Carbon, Hydrogen and Nitrogen and other gaseous impurities. De-oxidation was carried out by high speed multiple wire-injection units and refined steel is continuously cast in slab and bloom caster. Cast slabs were grit-blasted/ground using constant power grinding machine. Hot rolling of slabs was then carried out in a Steckel mill provided with Walking Beam Reheating furnace, Roughing Stand and Twin Steckel Stands. Blooms were hot rolled in a 5-stand Semi-continuous Hot Strip Mill. Hot Rolled coils were annealed & pickled in Annealing-Pickling lines having scale breaker, shot blasting unit, Electrolytic Sulphuric Acid and Mixed Acid bath. Annealed and Pickled coils were cold rolled in Sendzimer cold rolling mills. Annealing & Pickling of cold rolled coils was carried out utilizing Neutral Electrolytic Salt Bath (a Neolyte Solution was used) followed by Electrolytic Nitric Acid and Mixed Acid Baths. There was provision of online/offline Skin Pass Mills and Tension Leveler to produce different quality of products. Other facilities like Bright Annealing units in cracked ammonia atmosphere and Strip Grinding line were also there to produce desired surface finishes. PRODUCTS                                 [pic 3]

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