how meny reduction for 6high roling mill

A Z-Mill or Sendzimir Mill is a machine for rolling steel.Unlike a traditional rolling mill this 20-high cluster mill configuration utilizes cascaded supporting rolls to apply force on the small work rolls in the center. This allows the application of a higher roll pressure without bending the work rolls, which would result in poor metal quality.

Rolling processes 5-1 introduction: Rolling is the process of reducing the thickness or changing the cross section ... (high R) and rough treads (high, μ.) on farm tractors and off-road earthmoving equipment, thus permitting the vehicles to travel ... the cross section in each reduction. Fig. 5.5 5.5 rolling mills:

Rolling mill consisting of four rolls or known as a 4 High rolling mill is used for reducing material to extremely small thicknesses. Through the use of larger backup rolls, the issues of roll deflection can be avoided and smaller work rolls can be used. This reduction in work roll diameter: Reduces overall separating force required for reductions

Z-High® Mills. Sendzimir Z-High® Mills were developed to combine the advantages of the Sendzimir cluster-type rolling mill with those of the 4-High. Revamp Existing Mill. The Z-High® concept permits the revamping of a classical 4-High mill with a system that uses amuch smaller work roll.

May 16, 2016· 3 High Rolling Mill ... Helical Gear Box, Helical Gear Reducer, Helical Reduction Gearbox ... CNC Press Brake for Street Light Steel Poles for Sheet Bending Octagonal Pole High Mast ...

Rolling mills have many functions. They can be used to reduce the thickness of material quite accurately (+/-.0001") or compress the material to create a uniform density throughout the strip or

Non ferrous materials are cold rolled into sheets from hot rolled strips. Four high tandem mills are generally used for aluminium and copper alloys. In order to achieve upto 90% reduction in thickness in cold rolling, a series of rolling mills may be used to share the total reduction.

Oct 08, 2014· In between, there are one or more (normally up to 6 nos.) rolling mill stands for carrying out the cold reduction. Each mill stand has vertically stacked rolls that are powered by huge motors to impart high compressive stresses into the strip. Mill stands can be 2- high, 4-high or six-high. 4-high stands are more widely used since they give ...

Mill Vibration Phenomena during Cold Rolling. All machines vibrate during operation. However, only a few of these vibrations cause problems to the product or the machine itself. Typically, the most damaging vibrations involve a natural resonance of the machine which significantly increases the …

• Consider rolling of a flat plate in a 2-high rolling mill ... Max. reduction in thickness. Prof. Ramesh Singh, Notes by Dr. Singh/ Dr. Colton 47 Cold rolling (below recrystallization point) strain hardening, plane strain – von Mises 1 2 1.15 1.15 + = ⋅ = ...

greater rolling efficiency. 6-High Mills can replace the first stand of Tandem 4-High Mills due to their smaller work rolls. This would result in fewer stands, allowing the Mills to accept thicker hot-rolled strip. However, a 4-High Mill using smaller diameter work rolls may achieve the …

two-high rolling mill (Table 1). 2.3 Construction of the rolling mill To introduce the new rolling mill, as the new mills for four strands had to be laid out in a confined space, all the installations between the existing first intermediate rolling mill and the existing finishing mills were relocated (Figs. 2 …

Rolling Mills - High quality rolling mills from Durston and Pepetools. Models available with or without wire rollers, extension rolls, and gear reduction.

Hot rolling is a metalworking process that occurs above the recrystallization temperature of the material. After the grains deform during processing, they recrystallize, which maintains an equiaxed microstructure and prevents the metal from work hardening. The starting material is usually large pieces of metal, like semi-finished casting products, such as slabs, blooms, and billets.

tion of high-quality rolling products. The term "high-tech rolling" includes all cold rolling technologies where there is a good balance between the technical and eco-nomic advantages. The high development status of our cold rolling mills is only pos-sible because …

Apr 22, 2012· This film takes you through the processes within a hot rolling mill. You'll get to see the different stages all the way from heating to cooling. Filmed at SSAB in Borlänge, ...

HOT STRIP MILL — HIGHEST PERFORMANCE FOR NEW AND EXISTING STEEL MILLS The demand for hot rolled strip is growing in multiple ways. To remain competitive, new and existing mills must meet this challenge in the best possible way. The production of hot strip is a …

Jun 25, 2014· When you choose a rolling mill, it's important to understand the terminology and, most importantly, to determine what you want your rolling mill to do. Terms such as "gear ratio," "gearbox," and "gear reduction" all can sound daunting, but they are terms used to describe the basic function of your mill.

Nov 15, 2018· Four high rolling mills. 5. Cluster rolling mill. 6. Continuous rolling mill. ... In this, we can adjust the size of production and the rate of reduction. In this process, we can make it into reverse direction also and we can arrange different types of grooves sizes at upper and lower rolls by this the various cross-sectional area is achieved.

Thanks to its broad range of cold rolling mills for strip widths from 60 to 2,100 mm, ANDRITZ Metals has been one of the preferred cold rolling technology suppliers for decades. The supply focuses on 2-high rolling mills, high-capacity 4-high reduction rolling mills, and inline skin pass mill stands.

Feb 10, 2012· 6 High Reversible Cold Rolling Mill ... SCHEMATIC DIAGRAM OF 6 HIGH ROLLING MILLS Hydraulic jack Back Up roll Back up rolls Intermediate Pinch rolls Pinch Rolls rolls Pinch rolls Shear Shear Work rolls Uncoiler Uncoiler Recoiler Bottom foundation 2 ... like that generated when making a reduction, the rolls, since they are supported at the roll ...

We are a leading innovator in metal processing equipment, which includes designing, manufacturing and servicing of coil processing equipment, rolling mill equipment, extrusion presses and copper melting equipment.

Jun 04, 2013· Rolling mills are also classified based on the roll configurations. The types of mills based on roll configurations are given below. Two high mills – In this type of mills the rolling stands have two rolls (top and bottom). Three high mills – In these types of mills the rolling stands have three rolls which rotate in one direction.

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Tags Rolling, Rolling Mills; 3-High Rolling Mill. Three-high rolling mills consist of a large back up roll, small work roll, and another large back up roll. The purpose is to have a very minimum amount of reduction. Three-high mills are commonly used for making bearing material for gasoline and diesel engines (see cladding).

Rolling of Metals • Rolling –reducing the thickness or changing the cross-section of a long workpiece by compressive forces applied through a set of rolls • Developed in late 1500s • Accounts for 90% of all metals produced by metal working processes • Often carried out at elevated temperatures first (hot

Due to their excellent features, Sundwig S6-high (supported 6-high) rolling mills are mainly used for cold rolling of a wide range of strip hardnesses, widths, and gauges, either in processing lines as high-capacity reduction mills or offline as reversing reduction mills.