A Steckel mill, also known as a reversible finishing mill, [citation needed] is similar to a reversing rolling mill except two coilers are used to feed the material through the mill. One coiler is on the entrance side and the other on the exit side. The coilers pull the material through the mill, therefore the process is more similar to drawing than rolling.
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 tons of plates are produced ...
4-High reversing mill with attached edger and bender D1 220 L5 490 D2 400 L5 390 Finisher : 8 800 kW 2 Super-OLAC 4 100 Double-side, ... in plate rolling. At its 3 plate mills, JFE Steel has con-structed a plate thickness control system comprising high-response AGC (hydraulic automatic gauge control), ...
5. Cluster Rolling Mills: In this type of rolling mill, there are two basic roles that are backed up by two or more rolls which are bigger than those two basic rolls. These backed up rolls give more pressure to the basic rolls to heavily press the strip.
What are reversing mill plates? In comparison to material found on coils which are a continuous cast and a continuous roll, reversing mill plates are first cast into slabs, the slabs are then re-heated and re-rolled, generally on a set of four roles, back and forth until the plate is down to the required thickness, size and tolerances.
USA (Steckel/Plate rolling mill) 42 Maghreb Steel, Morocco (2.8 m) 44 Plant layouts 46. S MIE AG Heavy-plate mills 6 POSCO 5.5 m heavy-plate mill ... Four-high reversing roughing stand with edger (entry end) - Hydraulic adjustment systems - Roll force 120 MN Four-high reversing finishing stand
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Problem 3: A reversing mill is a two-high rolling mill in which the direction of rotation of the rolls can be reversed to allow the work to pass through from either side. A series of cold rolling operations are to be used to reduce the thickness of a metal plate from 50 mm to 20 mm in a reversing mill. Roll diameter = 600 mm, and coefficient of friction between rolls and work = 0.15.
The reversing cold rolling mill is the all-rounder among the cold rolling mills: Here, thin strips, thick strips, soft grades, high-strength and ultra-high-strength strips can be rolled in succession on one and the same plant. The RCM is mainly used for low carbon steels, but is also a good solution for modern grades such as silicon steels.
Some of the earliest literature on rolling mills can be traced back to the Swedish engineer Christopher Polhem in his Patriotista Testamente of 1761, where he mentions rolling mills for both plate and bar iron. He also explains how rolling mills can save on time and labor because a rolling mill can produce 10 to 20 or more bars at the same time.
For the successful plate producer, the mill is more than the rolling stand(s) at its core. Ancillary processes, in cooling and levelling in particular, are vital to quality, and control of the process is the key to efficient asset utilization.
In heavy plate rolling, the heated plates are plastically deformed by rolling mills. For this task, reversing four-high mill stands consisting of two work-rolls and two backup-rolls are often used. The plate is deformed between the two work-rolls in several rolling passes. The high rolling forces during the deformation cause the work-rolls to ...
Jul 18, 2014· East China MetalContinuous hot steel strip rollingTechnology and machineryTurnkey Supplier
Each heavy-plate mill features its own individual layout. That depends on the product mix, the product geometries, and the installation site. Common to all mills are the main process sections: reheating furnaces, mill area with one or two reversing 4-high stands, plate cooling and hot plate leveler, cooling beds, shearing line, finishing line, heavy plate line, and heat treatment line.
Jun 20, 2014· Cold Rolling MillSteel strip .Copper strip .Aluminum StripInput Thickness 2-6mmProduct Thickness :0.05--2mmStrip width :300--1650mm4 roller mill,HC mill,20ro...
Steel plate is produced on a reverse plate mill, which is typically only around 60m in length. The steel slab enters a single reverse rolling mill, and passes back and forth through the mill until it reaches the desired thickness. From this point, the plate is repeatedly heated and then cooled using water (quenched) and air (tempered).
New Rolling Method of Reversing Cold Rolling. A reversing cold rolling mill has been suffering from such drawbacks as unrolled portions necessarily produced in head and tail ends reduce yield, and time consuming works including removing of coils, threading of the strip and holding of the strip with the tension reel, which result in decreasing productivity.
4-Hi Mills Intermediate & Finishing Mills. The versatile Waterbury Farrel 4-Hi Mill can be deployed as both a non-reversing mill for intermediate rolling and as a reversing mill for finish rolling. Smaller work rolls allow for more efficient material reduction.
Aluminum Rolling Mills Temperature Control in the Hot Rolling Mill. Aluminum sheet and plate products are used for a wide range of applications, including can stock, brazing, automotive and aerospace. These industries demand exacting tolerances and precise mechanical properties, particularly for new, technically challenging high-strength alloys.
In plate rolling, reversing roughing mills are commonly used as a first processing step after casting. They are typically equipped with edger rolls for width reduction. During a rolling pass, lateral asymmetries like temperature gradients or thickness inhomogeneities can cause two major problems. The plate may rotate in the rolling gap and thus ...
In the main, the technology was developed for 'reversing' plate mills and later the principles were extended to other types of rolling mill such as coiled plate or 'Steckel' mills where rolling is more of a continuous process and interpass times shorter, allowing less time for recovery processes in the austenite to take place.
The Spartan plate mill is a quarto universal reversing mill, with automatic gauge control, capable of producing up to 200,000 tonnes per year. Before the finished steel plate is shipped to the customer, it goes through the following manufacturing process. Raw Material, Steel Slab.
Accurate temperature measurements are essential to ensure the steel maintains its uniform temperature and associated metallurgical properties.
Nov 21, 2015· Reversing rolling mill; Transverse rolling mill – Uses circular wedge rolls. The heated bar is cropped to length and fed in transversely between rolls. Rolls revolve in one direction in the mill. Shaped rolling or section rolling mill – Shaped rolling mills are bar mill, merchant mill, wire rod mill, structural mill, beam mill, and rail mill.
A two-stand reversing cold mill can deliver capacities between 300,000 t/a of thin-gauge products or 1,000,000 t/a and more of thicker-gauge products. Main benefits of Primetals Technologies' reversing cold mills. High production capacity and yield. Flexible, low-cost rolling of a wide range of products, especially for small order lots.
Reversing mills for strip (1 + 1) Main data. Production of strip and plate; Width: up to 3 m ... Mill stand actuators for close plate and strip tolerances. ... Modernization of rolling mills - Electrical and automation systems.
AdvantagesofAluminum Thepropertiesofaluminummakeitoneofthe mostadvantageousandversatilematerialsin usetoday.Aluminumis: Lightweight—Aluminumanditsalloys weigh ...
The place where all the equipment for metal rolling manufacture is set up is called a rolling mill. Rolling mills often vary in the type, number, and position of rolls. Rolling mill arrangements commonly used in manufacturing industry today include the two high mill, the two high reversing mill, the three high mill, the four high mill, the ...