Our hot roll mill descaling system

Billet descaling - YouTube


Sep 11, 2015· Descaling is the process of removing iron oxide scale layers from the hot steel surface by the means of high pressure water jets arranged in a so-called descaling box (or 'mill …

descalingforhotrollingmill


descalingforhotrollingmill hot roll mill descaling system Hot Roll Mill Descaling System ISD Dunaferr Hot rollingThe base material demand Hot Roll Mill Descaling System of the Hot Rolling Mill is met by own produced and by . Get Price. Advancement in Understanding of Descalability during High .

Assuring quality and reliability in the steel industry ...


The steel industry is one of the biggest and most important industries worldwide. It has always been a major driving force of the economy. Its products are indispensable, for example, in metal processing, automotive manufacturing, mechanical engineering and in the construction industry.

Descaling | Lechler


Jun 01, 2016· Regarding hot rolling of steel, the quality of the rolled metal surfaces depends to a large extent on effective descaling. In order to avoid surface damage, iron oxide scale layers are therefore removed from the hot steel surface by high-pressure water spraying prior to the actual hot rolling process.

Descaling of steel in hot rolling mills - ifm electronic


Exposure of the iron to the oxygen in the air results in oxide scales forming on the surface. This will affect the appearance and properties of the steel. In the production of high-quality hot rolled products it is therefore imperative to remove these impurities from the metal surface. Descalers ensure a high surface quality in hot rolling mills.

Mill Saves US$80,000 and Improves ... - Spraying Systems Co.


Mill Saves US$80,000 and Improves Operations with New Descaling Nozzles Problem: A fully integrated Midwestern steel mill manufactures hot-rolled, cold-rolled and coated-sheet products. Like all steel producers, the mill needs to remove the scale formed on the …

US5661884A - Offset high-pressure water descaling system ...


The present invention provides a descaling system for hot strip or plate mills. The descaling system includes upper and lower spray headers which are offset from each other along the pass line. Each spray header is adapted to direct a high-pressure water spray on the metal product to descale the upper or lower surface thereof. The upper and lower spray headers are offset at a distance greater ...

12--3D-Evaluation Method for Descaling Capability of Hot ...


Descaling is a key process of hot rolling, especially when a good surface quality of the hot rolled products is demanded. Many studies have been made on the descaling technique of the hot strip mill (HSM) process (1-3). The key descaling parameters include the facility, the descaling performance and the descaling conditions (Figure 1).

Rolling of steel in Hot Strip Mill – IspatGuru


Dec 03, 2015· Descaling of heated slab is a must in the hot strip mill for attaining good surface quality of the hot rolled strip. Descaler operation need to be optimize in order to ensure maximum scale removal and hence enhanced cleaning at minimum cooling of the heated slab.

Macro Defects in Steel - Rolling Defects


Primary scales due to poor descaling - Hot rolled products - Rolling defects RIS mark - Rolling defects Red scale - Hot rolled flat steel products - Rolling defects Reference chart for the evaluation of macroetch specimens - Cold rolling defects Ridge-buckle defect - Rolling defects Ridges - Cold rolled uncoated sheet - Rolling defects

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


Hydromechanical descaling of hot-rolled products has recently been decisively improved. A newly developed spray nozzle, and the targeted adjustment of spraying parameters, enable spray pressure ...

hot roll mill descaling system - artgeneration.co.za


The control system for descaling hot-rolled sheet mill ... Preparing steel for painting (descaling) Descaling hot rolled steel is very important, because the heat scale does not provide a very good adhesive surface for the coating. You are only missing one thing. A …

How to chemically remove Mill Scale - hot rolled steel ...


Jun 19, 2015· Quick little video showing the results of using Muriatic Acid to remove mill scale and rust from hot rolled steel.

Billet descaling - YouTube


Sep 11, 2015· Descaling is the process of removing iron oxide scale layers from the hot steel surface by the means of high pressure water jets arranged in a so-called descaling box (or 'mill descaler ...

removing sclae from hot rolled steel - Miller Welding ...


Dec 11, 2006· the mill scale you are refering to (on hot rolled) is is basically oxide and slag stuck to the surface. it's there because the steel was rolled to shape at high temperatures. cold rolled is formed at much lower temps (below temps that accelerate oxidiation) and so is pretty clean.

The Hot Rolling Process - California Steel Industries


In part because further descaling is not particularly practical once finish rolling begins, the #2 Scale Breaker is the last opportunity to remove oxidation before the finished hot-rolled strip is coiled. Typically, the descaling system in the Hot Strip Mill is very effective at removing primary (from the furnace) and secondary (regrown

HOT ROLLED STEEL - POSCO


With six plants producing hot-rolled steel and one high-mill plant in Pohang and Gwangyang, POSCO manufactures 9.8 million tons hot-rolled steel products per year. Some of the hot-rolled coils produced at our hot-rolling plants are sold as finished products while others

Roll Cooling | Lechler


As a result, efficient cooling of the rolls as well as the surrounding roll area is essential for the forming process in order to ensure stable roll temperatures and effective heat conversion or removal. The aim is thus to provide a uniform homogeneous cooling across the roll …

DESCALING TECHNOLOGY - SMSgroup


S MIE AG Hot Flat Rolling Mills 2 SMS Siemag does not treat descaling as an isolated measure but as an integral part of the process chain from continuous casting through hot and cold rolling up to final strip processing. Strips with an excellent surface quality can be produced only if well-tuned measures are taken in all process steps.

Offset high-pressure water descaling system - Tippins ...


Sep 02, 1997· The present invention provides a descaling system for hot strip or plate mills. The descaling system includes upper and lower spray headers which are offset from each other along the pass line. Each spray header is adapted to direct a high-pressure water spray on the metal product to descale the upper or lower surface thereof.

AUDITS OF EXISTING HYDRO MECHANICAL DESCALING …


AUDITS OF EXISTING HYDRO MECHANICAL DESCALING SYSTEMS IN HOT ROLLING MILLS AS A METHOD TO ENHANCE PRODUCT QUALITY Jürgen W. Frick Lechler D-72555 Metzingen / Germany E-mail : [email protected] Abstract : Over the life span of a rolling mill the requirements in terms of product quality and the range of steel grades may change significantly.

Roller Conveyor Blast Machines, Steel Blasting - Wheelabrator


The production of hot rolled strip is achieved in-line: annealing, cooling, mechanical descaling and pickling are combined in integrated processing lines. Wheelabrator shot blast systems are available for narrow, medium and wide strip and are well proven in this field of application.

Water descaling unit for rolling mill - ENCE


Rolls (cold and hot mill rolls) Profile forming machines; Water descaling unit for rolling mill. In its program, Production and Engineering Company ENCE (ЭНЦЕ ГмбХ) highlights the most significant metallurgical equipment; this equipment complies with the highest international quality standards and may be offered to customers at ...

Rolling Mill Process - RMT Tools


The intensely hot Billet is placed on a roller table which carries it into the roughing mill. Descaling. ... Slitting systems. ... type and Garret type coilers are used for obtaining a compact coil of Hot rolled bars rolled upto size of 12 mm .The hot rolled condition of the compact coil makes it suitable for direct cold working with high ...

ENDLESS ROLLING MILL - Primetals Technologies


ENDLESS ROLLING MILL — ADVANCED SOLUTIONS FROM THE MARKET PIONEERS The concept of endless hot rolling was introduced to meet the increasing demands for hot-rolled steel sheet using a cost-effective process compared to the conventional batch-type process.

Descaling Spray Applications | Lechler USA


Regarding hot rolling of steel, the quality of the rolled metal surfaces depends to a large extent on effective descaling. In order to avoid surface damage, iron oxide scale layers are therefore removed from the hot steel surface by high-pressure water spraying prior to the actual hot rolling process.

Pickling (metal) - Wikipedia


Pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, rust or scale from ferrous metals, copper, precious metals and aluminum alloys. A solution called pickle liquor, which usually contains acid, is used to remove the surface impurities.It is commonly used to descale or clean steel in various steelmaking processes.


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