PRIMARY DESCALING TECHNOLOGICAL PACKAGE FOR …

TYPICAL SPECIFICATION FOR A PRIMARY DESCALER UNIT • System pressure = 200 bar • Header pressure = 180 bar • Descaling speed = 1m/sec • Top header height adjustment range of 350mm enabling nozzle height to remain constant for a given slab / ingot thickness • High impact force across full width of plate • Side spray for Ingot Descaling The disposition of the stainless …

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The effect of scaling on interfacial friction in hot rolling of …

Three types of iron oxide phases make up the scale on the steel surface. These are, with increasing oxygen content, wüstite, FeO, magnetite, Fe 3 O 4 and haematite, Fe 2 O 3.Usually a scale with all three types of oxide phases is present on the steel surface with wüstite being closest to the steel matrix, followed by the intermediate magnetite layer and the …

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Scale development on steel during hot strip rolling

The paper presents a new method to describe and to predict the development of scale during metal forming processes, especially hot strip rolling processes.

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A review of planning and scheduling methods for hot rolling …

Modern steel production centers on the hot rolling mill as a key component. Scheduling for hot rolling mills is a challenging problem that has fascinated optimization researchers and practitioners ...

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Model for prediction of strip temperature in hot strip steel mill

Proper functioning of set-up models in a hot strip steel mill requires reliable prediction of strip temperature. Temperature prediction is particularly important for accurate calculation of rolling force because of strong dependence of yield stress and strip microstructure on temperature.

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Microsoft Word

Proceedings of 10th thIRF International Conference, Chennai, India, 08 June 2014, ISBN: 978-93-8 83 ENERGY CONSERVATION OPPORTUNITY IN A STEEL ROLLING MILL (HSL) BY USING VARIABLE FREQUENCY DRIVE IN DESCALER UNIT 1PAVITRA, 2G. SUCHITRA 1IVsem M.Tech Power and Energy System, EEE dept, BEC, Bagalkot 2Professor, Power and …

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AUDITS OF EXISTING HYDRO MECHANICAL DESCALING …

3 In most cases experience has shown that any existing documented data is not usually reliable since changes and modifications may have been made over the life span of a machine.

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Sheet metal descaling system for hot rolling mill …

We have created an entire descaling plant for a customer steel mill, an international leader in sheet metal manufacturing. The descaling system has a fundamental function inside a hot rolling mill plant: it eliminates the slag or the …

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Modelling descaling during hot rolling of steel

A Computer model was developed to study the stresses that develop within the oxide formed on the Surface of reheated steel slabs. The model considers that the crust grows during reheating ...

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[PDF] OF EXISTING HYDRO MECHANICAL DESCALING …

Over the life span of a rolling mill the requirements in terms of product quality and the range of steel grades may change significantly. In particular the capability ...

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De-scaling Systems

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Pickling of Hot Rolled Strip of Carbon Steel in Pickling Lines

Acids other than HCl or H2SO4 have been used to remove rust and scale from carbon steel. Citric acid, oxalic acid, formic acid, hydrofluoric acid, fluoboric acid, and phosphoric acid are all capable of removing mill scale from steel, but the rates of removal are generally not regarded as useful or economical for most commercial applications, especially continuous …

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Automated energy and resource saving scale descaling …

Download Citation | On Jan 1, 2020, G.G. Grabovsky and others published Automated energy and resource saving scale descaling system for hot rolling mill | Find, read and cite all the research...

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(PDF) Hot rolling mill hydraulic gap control (HGC) thickness …

In this article the AGC (Automated Gauge Control) system, of a hot rolling mill is analyzed and different methods are described to improve its performance.

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Hot Billet De-scaling – Nutech

Hot billet descaling is a crucial process in steel manufacturing aimed at removing scale and surface oxides from freshly cast or reheated billets.

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Automated energy and resource saving scale descaling …

Semantic Scholar extracted view of "Automated energy and resource saving scale descaling system for hot rolling mill" by G. Grabovsky et al.

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Cold Rolling Mill Automation System

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3D-Evaluation Method for Descaling Capability of Hot …

In this paper, we have developed an erosion testing procedure to esti-mate the impact force for a nozzle under specific spray conditions. In addition, the concept of this method can also be …

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Descaling

Hydro-mechanical descaling process. In hydro-mechanical descaling processes the jets are formed by special descaling nozzles which are arranged on spray headers in a so called descaling box (or mill descalers) through which the product (slab, strip, billet, bloom, beam blanket, etc.) travels.

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Microsoft Word

Establishing and benchmarking existing operational and performance data to see where the de-scaling system stands with the existing equipment. Diagnosis of the cause of specific …

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Descaling in Hot-Rolling Mills

In hot rolling mills, descaling equipment ensures high surface quality. During descaling, the material surfaces are sprayed with water under high pressure to blast off and completely remove the scale. The working pressure …

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Hot rolling mills

For over a century, successive generations of Designers, Engineers, and Technicians have built an outstanding know-how in designing, manufacturing and commissioning state-of-the-art Rolling Mills.

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CFD Analysis on a High Pressure Pump for Descaling in the …

The exposure of iron to oxygen in the air results in the formation of oxide scales on the steel surface. Therefore, it is very important to descale the steel to ensure a high surface quality in hot rolling mills. The descaler consists of several spray headers with nozzles that direct jets of water diagonally at the surface and typically operate at very high pressures of up to 400 bar. The …

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Steel rolling mill achieves target reduced operational …

Steel Rolling Mill Achieves Target of Reduced Operational Costs via Cooling System Upgrade Mel Magallon 1, David B. Durocher 2 1ArcelorMittal 250 US-12, Burns Harbor, IN USA 46304 Phone: 219-787-3503

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Characterization of hot rolled scales-root cause identification …

Hot rolled steel strips are produced by rolling of steel slabs of 210 mm thickness at 1150–1200 °C through roughing and finishing mills of a hot strip mill to a thickness of 1.6–6 mm.During hot rolling, some adherent oxides, known as scales, is formed on the strip surface in the reheating furnace prior to hot rolling due to high temperature oxidation.

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Pumps for descaling systemsin steel making

Hot rolling therefore involves the formation of mill scale (ferric oxide 2Fe 2 O 3), that has to be removed before the process is finished. In this step, which is referred to as "spray …

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Layout of the hot rolling process in strip steel production.

Hot rolling is a vital industrial process in the production of metals or metallic alloys like steel, Aluminum etc. Steel being an extensively used product in automobile, aerospace, shipping ...

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Descaling | Our applications

Hydro-mechanical descaling process. In hydro-mechanical descaling processes the jets are formed by special descaling nozzles which are arranged on spray headers in a so called descaling box (or mill descalers) through which the product (slab, strip, billet, bloom, beam blanket, etc.) travels.

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Hot strip mill for steel

The X-Roll® hot strip mill from SMS group is an all-round talent in hot strip production. It is the proper solution for ultra-thin gauges up to thick gauges for all steel grades incl. LC, ULC, high strength grades, API grades.

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(PDF) OPTIMAL HYDRAULIC DESCALING

PDF | Hydraulic descaling is an inherent part of the hot rolling process but can sometimes also be applied in the heat treatment process, continuous... | Find, read and cite all the research you ...

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Cooling Water Management in Steel Hot Rolling Mills

Cooling Water Management in Steel Hot Rolling Mills . G. Panagiotoulias, V. Paraskevopoulou, M.J.Scoullos . Laboratory of Environmental Chemistry, Faculty of Chemistry, National and Kapodistrian University of Athens,

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Steel rolling mill project with steel surface cleaning

Descaling process is very important in steel rolling mill factory to get the best surface treatment.

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Rolling of Steel Plates in a Plate Rolling Mill – IspatGuru

Fig 3 Technological processes of plate rolling mill. Normalizing rolling consist of normal rolling with heat treatment consisting of heating the plate to austenitization (higher than Ac3, around 900 deg C) temperature and then cooling in air.

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Descaling | Our applications

Lechler descaling nozzles are well-known under the brand name SCALEMASTER and offer the optimum conditions for high product quality, low maintenance costs and low roll …

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Hot rolling mill process & hot rolled steel sections

Hot rolling is an industrial process for re-working principally steels but also stainless steels. Steelworks melt the material. To make it transportable, the melted steel cools down in different shapes. The process of hot rolling sections. These shapes can be either blooms, billets or slabs.

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Hot Rolling Spray Solutions | Spraying Systems Co.

Optimizing Spray Technology for Hot Rolling Optimal steel quality depends on optimal spray technology. Spraying Systems Co. offers a wide range of superior nozzles and headers for descaling and cooling — along with local steel experts to assist you with product selection, cooling calculations, specialized testing and more.

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Tribology in Hot Rolling of Metal | SpringerLink

'Tribology in Hot Rolling of Metal' published in 'Encyclopedia of Tribology' Example. During the rolling of de-scaled steel strip under non-lubricated rolling conditions with an 84-in. and seven-stand hot strip mill, it was noticed that the coefficient of friction ranged from 0.46 at the first stand to 0.31 at the fifth stand.

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PAPER

JOCHEN MUNZ 1 Co-authors: Jong Yeon Hwang 2, Sang Hyeon Lee 2, Young Ju Ko 2, Jürgen Frick 1 DESCALING SYSTEM OPTIMISATION IN A COMPACT ENDLESS CAST AND ROLLING MILL CEM® Abstract After the commissioning of the original thin slab mill of POSCO Gwangyang in

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How to Remove Mill Scale: Industrial Coatings

As far as heavy duty industrial coatings go, mill scale can be a stubborn one to remove. A common byproduct of metalworking, especially in industries dealing with hot rolled steel, the presence of mill scale on the …

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Descaling in Hot-Rolling Mills

STAUFF pipe and tube clamps are used to ensure that these impressive quantities of water are safely guided through pipelines. In addition to clamps of the Heavy Series according to DIN 3015 (Part 2), which are …

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