Rolls (cold and hot mill rolls) Profile forming machines; Water descaling unit for rolling mill. In its program, Production and Engineering Company ENCE GmbH (ЭНЦЕ ГмбХ) highlights the most significant metallurgical equipment; this equipment complies with the highest international quality standards and may be offered to customers at
Jun 01, 2016· Descaling: Audits of existing hydro-mechanical descaling systems in hot rolling mills as a method to enhance product quality Contribution paper for The Iron & Steel Technology Conference and Exposition 2005, Charlotte N.C., USA 05/2005
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
The Hot Rolling Process California Steel Industries. surfaces of the transfer bar shortly be fore it enters F6 for finish rolling. As with the roughing mill’s descaling system, for some thinner-gauge, wider, and/or stiffer products, the low-pressure header is disabled to conserve heat for rolling.
descaling system. During slab reheating the slab surfaces develop an oxide layer inside the furnace (scale) which, if not removed, will be rolled into the plate surface leading to surface defects and reduced product quality. The rolling in of the scale also increases roll wear with reduced roll life. Therefore
The mechanical design calculations and features of a modern high-pressure descaler systems at Dofasco No. 2 hot mill to effectively remove the types of scale that grow during hot rolling
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.
Benefits Of Descaling System (Why Water De-scaler Required) Improves quality of Rolled Product by preventing fusion of oxidized scale into base material Reduces Rejection by preventing surface defects of parent material Increases life of Pressure Rolls of Rolling Mill and reduces down time for repair &
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.
Sep 08, 2017· Several types of descaling processes are used for removal of scale from the surface of the hot rolled steels. These descaling processes are usually classified into four categories. These are (i) flame cleaning process, (ii) mechanical descaling processes, (iii) hydraulic descaling process, and (iv) chemical descaling processes.
Hot Roll Mill Descaling System Vital-& Hot Roll Mill Descaling System. Billet selection and heating of 08mta hot rolled wire rod mill production line in this hot rolled wire rod mill production line because of the close distance between the continuous casting machine and rolling line the hot billet is used as raw material. Get Price
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.
Jan 21, 2019· Identifying Mill Scale. Mill scale (often known simply as ‘scale’) refers to the thin, flaky texture that forms on the outer surface of hot-rolled iron oxides and metals. It is a by-product of manufacturing hot-rolled metal plates and sheets, occurring as the surface oxidizes during the heating, conditioning and hot rolling processes.
The hot rolling process has been divided into many steps of the process, this article mainly talks about the Descaling. The detail of it as following: Between the Crop Shear and th e first Finishing Mill Stand sits the #2 ScaleBreaker, which is tasked with the final scale removal operation. Sprays above and below the transfer bar blast it with 1,500 psi jets of water to break up the scale that
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.
See how our spray technology improves the steel, aluminum and other metal manufacturing sectors, from iron and steelmaking to hot rolling, cold rolling and more. Spraying Systems Co. supplies products for many critical applications in the essential businesses of health, safety, food, and infrastructure.
Sep 08, 2017· Several types of descaling processes are used for removal of scale from the surface of the hot rolled steels. These descaling processes are usually classified into four categories. These are (i) flame cleaning process, (ii) mechanical descaling processes, (iii) hydraulic descaling process, and (iv) chemical descaling processes.
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.
Running the descaler pump at constant speed wastes energy and water, and heavy maintenance is required on the motor, bypass valves, and the pump. Control system tests in a steel mill using a variable speed pump showed annual electrical savings of 1,320 MWh/year. With an electricity cost of $0.10 per kWh, the savings are $132,000 per year.
SMS DEMAG Hot Strip Mills 10 The drum-type shear installed between the roughing and finishing mills of a hot strip mill crops the trans-fer bar at its head and tail. In special applications, the drum-type shear also serves to divide transfer bars and finished plates. Based on the experience gained from more than 60 drum-type shears built so far,
Apparatus for descaling substantially flat surfaces of hot rolled stock US5517842A (en) * 1994-08-02: 1996-05-21: Danieli United, Inc. Roll and strip cooling system for rolling mills US5661884A (en) * 1996-02-20: 1997-09-02: Tippins Incorporated: Offset high-pressure water descaling system
Rolling conditions in hot strip mills and their influence on the Introduction. in hot strip mills, slabs of 1 50 to 250 mm thick are rolled to strip 1.5 to 12 mm . from descaling and roll cooling systems work on the strip surface. Almost The primary aim of roll cooling systems is cooling the work rolls
hot roll mill descaling system maherfoundationorg. DescalingHot rollinglechler-forsunki stops the undesired flow of low pressure water onto the rolled surface when the descaling system descaling box (or mill Hot . Efficient and effective descaling in the Steel industry. Within the hot rolling mill, descaling equipment is placed before the
The temperature of the hot melt is reduced by means of a chilled roll. The melt is cooled down very quickly, with possible flow rates of up to 100 kg/h. After cooling, the product is reduced to flakes by means of a kibbler. The subsequent milling procedure can be done on line by directly adding a hammer mill or a conical mill.
The hot rolling process has been divided into many steps of the process, this article mainly talks about the Descaling. The detail of it as following: Between the Crop Shear and th e first Finishing Mill Stand sits the #2 ScaleBreaker, which is tasked with the final scale removal operation. Sprays above and below the transfer bar blast it with 1,500 psi jets of water to break up the scale that
See how our spray technology improves the steel, aluminum and other metal manufacturing sectors, from iron and steelmaking to hot rolling, cold rolling and more. Spraying Systems Co. supplies products for many critical applications in the essential businesses of health, safety, food, and infrastructure.
The control system for descaling hot-rolled sheet mill. Contents. Introduction. 1. Overview and analysis the current approach to automating the process of descaling. 1.1 General information about the process of descaling. 1.2 Investigation of the device and the functioning of the system descaling.
hot roll mill descaling system maherfoundationorg. DescalingHot rollinglechler-forsunki stops the undesired flow of low pressure water onto the rolled surface when the descaling system descaling box (or mill Hot . Efficient and effective descaling in the Steel industry. Within the hot rolling mill, descaling equipment is placed before the
Rolling conditions in hot strip mills and their influence on the Introduction. in hot strip mills, slabs of 1 50 to 250 mm thick are rolled to strip 1.5 to 12 mm . from descaling and roll cooling systems work on the strip surface. Almost The primary aim of roll cooling systems is cooling the work rolls
Apparatus for descaling substantially flat surfaces of hot rolled stock US5517842A (en) * 1994-08-02: 1996-05-21: Danieli United, Inc. Roll and strip cooling system for rolling mills US5661884A (en) * 1996-02-20: 1997-09-02: Tippins Incorporated: Offset high-pressure water descaling system
AUDITS OF EXISTING HYDRO MECHANICAL DESCALING SYSTEMS IN HOT ROLLING MILLS AS A METHOD TO ENHANCE PRODUCT QUALITY Jürgen W. Frick Lechler GmbH 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.
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).
Running the descaler pump at constant speed wastes energy and water, and heavy maintenance is required on the motor, bypass valves, and the pump. Control system tests in a steel mill using a variable speed pump showed annual electrical savings of 1,320 MWh/year. With an electricity cost of $0.10 per kWh, the savings are $132,000 per year.
The temperature of the hot melt is reduced by means of a chilled roll. The melt is cooled down very quickly, with possible flow rates of up to 100 kg/h. After cooling, the product is reduced to flakes by means of a kibbler. The subsequent milling procedure can be done on line by directly adding a hammer mill or a conical mill.
Nov 28, 2017· Preparing steel for painting (descaling) A discussion started in 1998 but continuing through 2017. 1998. Q. I have started a small (Me!) company making steel furniture and other items (park benches, tables, etc.). I usually finish with a primer, then Rustoleum. Most of the items are made from hot roll, and some involve smithing.
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
Descaling centers on the explanation of the variations of descaling and descaling systems, understanding descaling forces and the principles of descaling designs. This will allow operators to concentrate their efforts in relation to scale growth control, eliminate rolled-in scale, and further enhance the surface quality produced on hot strip
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