roll mill descaling system

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Descaling device and method - SMS Schloemann-Siemag ...

Descaling device and method. A descaling device for slabs or strips in hot rolling mills includes nozzles fed by a pressurized water piston pump for directing water jets against the slab or strip for removing scale adhering to the surface of the slab or strip. At least one additional pressurized water piston pump is provided, wherein the piston ...

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Steel Mills - DynaIndustrial

The pinch roll housing resembles a typical roll mill housing. This particular pinch roll stand was made more complicated by the fact that it included a top and bottom descale system. The descale components were designed to prevent water wash out of the aprons, structure, and rolls while maintaining proper off-sets for efficiency.

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Efficient and effective descaling in the Steel industry

Within the hot rolling mill, descaling equipment is placed before the mill or after the mill stand and it takes the low pressure water from the plant water supply, creates high pressure water, which is sprayed onto the surface of the hot steel to remove the scale. ... all of which needs to be accommodated by the high pressure pumping system.

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Mechanical Processes for Descaling of Steel – IspatGuru

Mechanical descaling processes (Fig 1) normally include processing by (i) reverse bending deformation, (ii) shot-blasting, and (iii) combination of reverse bending and shot blasting. These processes are normally used for the removal of scale from the steel rods in the steel rod drawing industry. Fig 1 Mechanical descaling processes.

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METINVEST :: Products and quality :: Production process

Descaling (INOXIHP) After exiting from the reheating furnace, slabs move through descaling station for water scale removal under pressure of 220 bars. Quarto reversing rolling mill (DANIELI) Slabs are then rolled by a quarto reversing mill where they pass forth and back between the rolls in order to reduce the thickness.

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Descaler Pump Energy Savings | TMEIC

Descaling System Layout. The control system allows the bypass valve to be activated at lower pump speed and pressure. During mill delays the pump speed can be reduced, and during a roll change the pump can be stopped.

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Products › Flat › Hot Strip Mills Modern rolling mills ...

The Hot Strip Mill represents the most productive solution for flat rolled products. It provides the highest level of productivity together with a large product mix and outstanding quality. Yearly productivity of Hot Strip Mills can vary from 2 to 6 Mtpy, …

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Abstract - Konstantin Zajtsev - The control system for ...

So far there is a need to develop a descaling system with customizable, automatic regulation and control as a separate water jet parameters and their relation to empirical data, the surface quality of rolled products at the outlet of the mill.

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More surface quality in rolling and forging plants

individual components for descaling systems as well as complete descaling units for the removal of primary and secondary scale. The equipment is designed according to the latest state of the art in descaling technology using Lechler descaling software. Numerous rolling mills throughout the world have benefited from the reliability

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Current News of Primetals Technologies | Primetals ...

Hot Rolling Long. Bar Mill; Rod Mill Equipment; Section Mill; Endless Rolling; Efficient Heating System; Hot Rolling Flat. Hot Strip Mill; Plate Mill; Steckel Mill; Plate-Steckel Mill; Endless Rolling Mill; Cold Rolling. Tandem Cold Mill; Coupled Pickling Line & Tandem Cold Mill; Reversing Cold Mill; Skin-Pass Mill; Special Steel Mill; Non ...

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(PDF) Optimization of descaling nozzles in a hot strip mill

Thin-slab casting and rolling mills require higher water pressures in the hydromechanical descaling section than conventional hot strip rolling mills. ...

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Steel Mill, Rebar Rolling Mill Machinery | Hot Steel ...

The roughing mill is made up of Multiple independent rolling mill stands, Billets heated in the furnace until they glow bright orange-yellow are rolled through one stand at a time to produce transfer bars suitable for finish rolling. High-pressure water-jet nozzles clean the oxidized iron, or scale, from the surface along the way.

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Hydraulic Descaling

The descaling system must be able to deal with all types of mill scales depending upon furnace environment and type of steel in process. ... Descaling In Hot rolling Mills. Scale is formed during hot rolling of ferrous metals resulting in a high wear rate of the rolls and subsequently deterioration of the quality of final rolled product. In the ...

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animation of hot rolling mill

Steel Mill Rebar Rolling Mill Machinery. Critical to Rolling Mill is its reheat furnace Billets and Ingots are stacked on the Hot charging area of the plant with the help of overhead cranes Billets placed parallel to each other on the CI lines in the furnace are continuously pushed inside the Reheating furnace with the help of mechanical or Hydraulic pusher depending on the quantity.

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High-capacity tension scale breaker | Primetals Technologies

Tension leveler with high-stiffness leveler frame and roll cassettes. Excellent elongation for effective descaling and strip-shape correction. Increases pickling speed and efficiency to enable effective production of higher steel grades such as AHSS. Available in several bridle roll-drive system configurations with wide range of tension capacities.

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Cut of OPEX—Sophisticated Technical Solutions for Hot ...

A conventional work roll spray cooling system installed in a 7 stand finishing mill is mostly operating with a system pressure of 7 to 12 bar. The water usage is approximately 7000 m 3 per hour. The operational costs for energy and water use as well as for the spare parts for nozzles and valves are challenging.

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Case Study: Steel Mill Reduces Downtime, Improves ...

installed on the system and raises an alarm if the pressure drops or cannot be maintained, so preventative measures can be taken. This has eliminated downtime from rolls freezing up. The mill was also experiencing work roll damage and subsequent downtime in the roughing mill due to coolant flow problems. The roll

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SMS group : NLMK Dansteel, Denmark

This revamp represents one of the largest investments in a European heavy-plate rolling mill in recent years. Central to the upgrade was installation of the modern 4.2-m heavy-plate mill stand with CVC ® plus technology, work-roll bending system, and hydraulic adjusting system. That replaced the company's more than 50-year-old 3.6-m mill stand.

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Schäfer & Urbach

Scale formationduring hot rolling is affected by the temperature, steel grade, surrounding atmosphere and the exposure time. This paper gives the basics in descaling technology and their application in slab casting lines, heavy plate mills and hot strip mills. There are two kinds of scale relevant in casting plants and rolling mills:

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Metallurgical Equipment | Tvisha Engineering & Consultancy

Flat Product Cold Rolling Mill, Cobble Gaurd/Prboard/Entry Guide Coil Car. Flat Product Hot Rolling Mill, Stripper Plate / Roll Cooling Headers/ Descaling System. Long Product Hot Rolling Mill, Bar/ Wire Rod / Profiles. Long Product Steel Making Plant EAF / LF / CCM. Spares For Hot & Cold Rolling Mills, Roll chocks / CCM Mould / Roller Guides.

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Descaling Valve - HPE

Descaling Valve. To supply high pressure water for the descaling of rolling mill products in the steelworks industry. The valve has the characteristic in that it first fills the descaler manifold before it fully opens to eliminate water hammer in a partially empty descaler system, which occurs during the waiting period.

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HOT ROLLING - FLAT PRODUCTS | Primetals Technologies

The Plate-Steckel Mill is a highly specialized hybrid, capable of rolling wide structural steel products in both flat plate and coil form, and at very long lengths through the use of coiler furnaces. There are few examples and even fewer truly successful project references, with Primetals Technologies prominent as a proven supplier.

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US6119323A - Apparatus for the descaling of rolled metal ...

B21B1/08 — Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle ...

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Rolling Mill - Çemtaş

Descaling Unit-2 It is a secondary scale cleaning unit within the rolling process. After the roughing mill, the secondary scale layer (iron-oxide) formed on surface of the rolled material is cleaned with water spray of minimum 100 bar water pressure in 3 different zones located before and inside the continuous rolling mill.

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DESCALING TECHNOLOGY - SMSgroup

during the heating-up and rolling processes is a decisive prerequisite for the production of strip or sheet with a perfect surface finish. With more than 140 descaling units installed in hot strip mills, heavy plate mills, CSP® plants and Steckel mills, SMS Siemag is the global leader in descaling technology. In order to provide steel

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Roller Technologies - Osborn

For descaling strip surfaces after hot and cold mill processes, our brush rollers have been setting standards ... Roll Coating Control in Hot and Cold Rolling Mills Roll Cleaning and Scratching • very precise brushing control ... entire system. Roll …

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SOLUTIONS FOR HOT ROLLING MILLS

SOLUTIONS FOR HOT ROLLING MILLS DESCALING ... header and system design, cooling calculations, specialized testing and more. We have a decades-long, proven track record ... HOT ROLLING MILLS TABLE OF CONTENTS C9 G48G114 C9 G52 G118 C10 C10 C10 C4 G18 G84 C4 G18 G84 C4 G18 G84 C5 G18 G84 C5 G19 G85 C6 G41 G107 C6 G43 G109

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Energy-Efficient Cooling and Hydraulic Descaling Systems ...

The cooling system for the rolls of thick-wall rolling mills was optimized and modified for Voestalpine Stahl (Austria), U.S. Steel Kosice, Ltd. (Slovakia), and STEEL (Korea). A collector prototype for hydraulic descaling is currently tested on a P1500 Steckel rolling mill in Liberty Ostrava a.s.

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Roll Cooling | Lechler

Roll cooling: General aspects of roll cooling for hot & cold rolling mills Professional report from SEAISI Quarterly Journal (SQJ) 2014, 43, 2; 49-56 – 12/2016 Hubertus Wenig Read now (pdf, 1 ) Roll cooling: Fundamentals of roll cooling and control of flatness at primary cold reduction Contribution paper – 12/2016

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CHINA STEEL

The plate mill is mainly equipped with the walking-beam continuous reheating furnaces, high-pressure descaling box, 4-high reversing rolling mill with hydraulic AGC system, γ-ray thickness gage, 24m-long on- line accelerated cooling system, 3600-tonleveler, rolling-disc type cooling bed, on-line automatic ultrasonic testing system, and normalizing furnace.1 million …

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BRING OUT THE BEST

rolling mills of the metallurgical industry. BRING OUT THE BEST is our guiding principle. We support you from the initial idea up to the after-sales service, to get together the maximum out of your system. BRING OUT THE BEST. DESCALING SYSTEMS Valves and systems for descaling of long & flat products. ROLL COOLING SYSTEMS

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Descaling | Lechler

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. Working pressure range from 80 to 450 bar.

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Performance Modules – a convenient way to modernize hot ...

Performance Modules related to hot rolling mills are e.g. camber free rolling, modular laminar strip cooling system, new edge masking and intelligent components. The Performance Modules treated in the paper are presented according to material flow as follows: (1) Newly designed slab and strip descaling systems equipped with frequency

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Home - Engineering Commodity And Services

Descaling System For Hot Rolling Mill. Descaling Pump. Centrifugal Blower. CNG Compressor. Composite Rolls. Boiler Feed Pump. BB-Series Centrifugal Pump. BackUp Rolls. 4 Roll Mills. Vertically Suspended Pumps. Multi-Stage Centrifugal Pumps. Non Roll Products. Rolling Mill Rolls.

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An effective descaling system for hot rolling

An effective descaling system can be evaluated by comparison of the equivalent stress on the interface with the adhesive strength of the scale. The calculation of …

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Descaler Pump Energy Savings | TMEIC

Descaling System Layout The control system allows the bypass valve to be activated at lower pump speed and pressure. During mill delays the pump speed can be reduced, and during a roll change the pump can be stopped.

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