cold roll mill process

SMS group offers various cold roll mill technologies for copper, steel and aluminum like tandem cold mill, 18 HS mill, reversing mill, skin pass mill, single stand cold mill…

The function of the aluminum rolling mill is to roll the original aluminum into a Cast-rolled alloy strip suitable for cold rolling. The molten aluminum must be supplied continuously. The melt of aluminum alloy must be clean and have the same chemical composition, …

As opposed to hot rolling, cold rolling occurs with the metal below its temperature of recrystallisation. This is still only half the truth. The whole process starts out like hot rolling to give the initial shape without much resistance. After that, the metal is left to cool at room temperature. The half-products are then fed to cold reduction ...

the hot rolling mill is coiled for transport to the cold mill which might be on the same site or elsewhere. Cold mills, in a wide range of types and sizes are available; some are single stand, others 3 stand and some 5 stand (Figures 1301.02.03 and 1301.02.04). Cold rolling speeds vary but modern mills operate at exit speeds as high as 3000 m per

NOTE: Hot-rolling and cold-rolling should not be mistaken for different grades of steel. Steels of different grades can be produced as hot-rolled or cold-rolled. HOT-ROLLED STEEL. Hot-rolling refers to a mill process in which you roll the steel at a temperature above its recrystallization temperature; a heat that typically exceeds 1000° F.

Tandem cold rolling process is a nonlinear complex system with external and internal uncertainties and significant disturbances. The improvement in the quality of the final output depends on the control strategy of centerline thickness and interstand tension. This paper focuses on interstand tension control problem in 5-stand tandem cold rolling mills.

Types of cold mill: a) Reversing, b) Non-reversing c) Tandem strip rolling mill [3] Choosing the correct type of cold mill depends on the exact range of products that is desired to be produced. Cold mills are classified into few categories according to their thickness ranges and speeds. To determine the

The cluster mills consist of two working rolls with small diameter and four or more backup roll with larger diameter. The number of back- up rolls high as 20 or more depends upon the support heeded for the working roll. It cluster mill is used for cold rolling process. Application of rolling process:

Full continuous hot rolling mill Reverse cold strip mill Continuous annealing-pickling line (AP line) Vacuum annealing furnace Tube welding line Titanium sponge Rutile ore Titanium sponge Compaction Compacts Manufacture of electrodes VAR (Vacuum arc remelting) Ingots Ingot Breakdown forging

Cold rolling reduction is an important factor that affects drawability of IF steel. It has been observed that increasing cold rolling reduction increases the r m value, at least up to 90% [34].This effect has been shown in Fig. 5.14.Perhaps the most important parameters in the production of a strong {111} recrystallization texture are the annealing temperature and the time of holding [35].

In the process of Rolling the most significant aspect is the generation of heat through friction and deformation in the roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55 o C – 70 o C with strip

Nov 30, 2018· Rolling is a process that is followed in most metal making activities. Material is passed through a stock of rollers in order to maintain a level shape and thickness. Generally, there are two types of rolling, i.e., hot rolling and cold rolling. No matter what type of rolling, a mills roll makes the metal crafting process easier and hassle-free.

Dec 30, 2018· Cold rolling is a process by which the sheet metal or strip stock is introduced between rollers and then compressed and squeezed. The amount of strain introduced determines the hardness and other ...

Nov 09, 2016· 9 • Four-high or cluster mills are used. (Al, Cu alloys) • Cold rolling cannot reduce the thickness of a workpiece as much as hot rolling in a single pass. • This process increases strength upto 20% via strain hardening.

Rolling processes 5-1 introduction: Rolling is the process of reducing the thickness or changing the cross section of a long workpiece by compressive forces applied through a set of rolls, as shown in figure (5-1). Fig. (5-1) Most rolling is carried out by hot working, called hot rolling, owing to the large amount of deformation required.

This makes cold rolling a more labor intensive and expensive process than hot rolling. Cold rolling can also reduce the grain size of the metal resulting in Hall-Petch Hardening. Both hot rolling and cold rolling are used to create sheet metal. However, cold rolling produces thinner sheets.

Tandem cold rolling mills can be basically split into two groups; sheet mills if they reduce hot band to sheet gauge or tin mills if they roll the same incoming material to tinplate stock. Key advantages of the tandem rolling process include cost reduction and good improvements in productivity especially when integrated with a continuous ...

There are two major types of rolling mills, and one is hot rolling mills and second is the cold rolling mills. Let's see how the operation of hot rolling mills works. Knowing the process will allow you to find the right rolling mill rolls manufacturer easily. Steel rolling is the process of reducing the cross-section of large ingots or plates ...

The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

If the strip is rolled after heating the strip above the re-crystallization temperature then it is termed as Hot rolled and if that done in room temperature then it is termed as the Cold rolled. Rolling is a process that is widely used and has very high production.

Steel rolled in two-stand reversing cold mills is suitable for a wide range of applications, offering the best possible performance in terms of quality and productivity. A two-stand reversing cold mill can deliver capacities between 300,000 t/a of thin-gauge products …

Cold rolling involves a similar process to hot rolling, however the steel is subjected to further processing. After being rolled, the steel is cooled at room temperature in cold reduction mills. After the steel has cooled, it is subjected to annealing and/or tempers rolling, in order to provide a wide range of surface finishes and more accurate ...

Sep 11, 2014· Cold Rolled Steel. Cold rolled steel is essentially hot rolled steel that has had further processing. The steel is processed further in cold reduction mills, where the material is cooled (at room temperature) followed by annealing and/or tempers rolling. This process will produce steel with closer dimensional tolerances and a wider range of ...

Nov 12, 2013· description of the cold rolling process is presented. In Section 3, a mathematical model has been driven for sin-gle-stand cold rolling mill. In Section 4, architecture and learning algorithm Fuzzy Neural Networkof have been presented. In Section 5, thickness control with roll ec-centricity compensation has been proposed. In Section 6,

rolling mill, dedicated roll cooling systems are required to fulfill the required functions. Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method to control the flatness of the strip in cold rolling mills.