# rolling mill calculation

### Fundamental concept of metal rollingmtixtl

Fundamental concept of metal rolling 1) The arc of contact between the rolls and the metal is a part of a circle. 2) Example Calculate the rolling load if steel sheet is hot rolled 30 from a 40 mm-thick slab using a 900 mm-diameter roll. The slab is 760 mm wide.

Get Price### Roll force torque lever arm coefficient and strain

Due to the growing importance of width control in strip and plate mills edge rolling is currently an im-portant process in hot rolling mills. Research in edge rolling has been carried out and in the present ar-ticle models for roll force torque and lever arm coefficient are derived using the upper bound method. A simple kinematically admissible deformation zone and velocity field

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Erica Stice is breaking down the jewelry studio rolling mill. Watch to learn how to switch out the rollers grease and maintain it and how this can be a val

Get Price### ROLLING

is 300 mm and the rolls rotate at 100 rpm. Calculate the roll force and the power required. For annealed copper it has a true stress of about 80 Mpa in the unstrained condition and at a true strain of 0.223 true stress is 280 Mpa. FOUR HIGH ROLLING MILL. PROBLEMS AND DEFECTS IN ROLLED PRODUCTS Porosity Cavity Blow Holes occurred in the

Get Price### Steel Rolling Process Modeling and Mill Design Training

Model Training Steel Rolling Process Modeling and Mill Development. View Course Modules Outline. Introduction. This five-day instructor-led course is designed to improve mill related engineers the basic skills on rolling mill parameters calculation for mill

Get Price### torque in rolling mills calculation formula with example

Calculate the dynamic load to the drive wheels by solving the F = m x a formula which is Newton s Second Law of Physics. Substituting stated values F = 3 000 . Chat Online Method of load calculation of electrical drives of rolling . Results of calculations and experimental studies of rolling torque in rolling mill 5000.

Get Price### Basics of Rolling and Rolling MillsIspatGuru

May 30 2013 · Fig 4 Roll configurations in rolling mills. Two-high mill roll configurationThis is the most commonly used rolling mill configuration. In this configuration there are two horizontally mounted rolls. The rolling mill motor drives either both rolls (top and bottom) or only one roll (normally the bottom roll) with the top roll rotating due to the friction between the roll and the

Get Price### POWER IN ROLLINGidc-online

The ratio λ = a/Lp = a/√R.∆t is used to calculate the moment arm a λ =0.5 for hot rolling and 0.45 for cold rolling. The torque is equal to the product of total rolling load and the effective moment arm. Since there are two work rolls Torque Mt = 2P.a Consider two high roll mill as shown in the figure.

Get Price### Method of load calculation of electrical drives of rolling

During manufacturing of heavy strips and plates from difficult-to-form steel grades on sheet and wide-strip rolling mills there is a problem of exact calculation of power parameters of rolling.

Get Price### MANUFACTURING PROCESSESFIT

Various configurations of rolling mills (d) cluster mill Cluster Mill 22 Variousconfigurations of rolling mills (e) tandem rolling mill. Tandem Rolling Mill Rolling mills have several stages where the each stage successively reduces the thickness of the stock until the desired cross section is achieved.

Get Price### The calculation of rolling forceInnoval Technology

The calculation of rolling force. When manufacturing sheet products it s important to understand the rolling force. This is because you need it to set the appropriate roll gap on the mill accounting for the stretch of the stand. The prediction of rolling force can be challenging due to the large number of inter-connected process variables

Get Price### Load Analysis and Driven Power Calculation (4 Roll Bending

The load analysis of rolling machine can be reference data for designing parts of plate rolls. The calculation of the main driven power of the plate roll bending machine is the key reference data for choosing the main motor. The motor power should be chosen properly.

Get Price### Calculator for Rolled Length of Roll of Material

An example of rolled material would be a rolled carpet or a rolled sheet of paper from the paper mill. The length units that can be used are yard feet inch meter centimeter millimeter mil and micron. A mil is equal to one thouh of an inch. Calculator

Get Price### Strip Width Calculation for Tube Mills Pipe Mills and

Strip Width Calculator. Share this page. Print this page . Disclaimer The above information is an estimate only and should be treated as such. Due to different variables on different mills the width(s) calculated are strictly approximate and should be

Get Price### Strip Width Calculation for Tube Mills Pipe Mills and

Strip Width Calculator. Share this page. Print this page . Disclaimer The above information is an estimate only and should be treated as such. Due to different variables on different mills the width(s) calculated are strictly approximate and should be

Get Price### Load Analysis and Driven Power Calculation (Symmetrical 3

Calculation of driving power 3.1 Lower roller drive moment. The lower roller of the plate rolling machine is the driving roller and the driving torque on the lower roller is used to overcome the deformation torque T n1 and the friction torque T n2.. In the process of steel plate rolling the deformation capabilities which stored in AB section of steel plate (see Fig 1a and Fig 2) is

Get Price### Excell Sheet Calculation Torque Speed Power For Rolling Mill

tube mill design calculation force roll gmecrusher. Rolling Mill Speed Calculation roll force torque power during steel rolling mill be a rolled carpet or a rolled sheet of paper from the paper mill.

Get Price### Basics of Rolling and Rolling MillsIspatGuru

May 30 2013 · The rolling mill motor drives either both rolls (top and bottom) or only one roll (normally the bottom roll) with the top roll rotating due to the friction between the roll and the work piece. As per the rolls rotation direction the mill can be either non-reversing (unidirectional) mill or reversing mill.

Get Price### Multi-pass Hot Rolling of SteelsSente Software

Multi-pass Hot Rolling of Steels Multi-pass hot rolling is a general practice in the production of plates. An illustration of a plate mill Fig. 1 is shown below to demonstrate how a series of processes are carried out to produce plates from steel slabs.

Get Price### (PDF) Methodology for Calculation of Rolling Load and

Rolling load calculation 3.1 Properties of Material to be used for Hot Rolling MaterialA36 Mild Steel UTS400 Mpa Yield Strength250 Mpa Elongation20 Carbon0.26 Density7800 kg/m 3 Poisons ratio0.26 Shear Modulus79.3 Gpa Table 1 Effect of Temp on UTS PASSES TEMPARATURE ( ̊C) ULTIMATE TENSILE STRENGTH

Get Price### A Computational Method to Predict Strip Profile in Rolling

Sep 09 2009 · The calculation of roll force and torque in. hot rolling mills. Proc. Instn Mech. Engrs 1954 168(6) 191–200. 2. Orowan E. The calculation of roll pressure in hot and. cold flat rolling. Proc. Hot rolling mill at Eregli Iron and Steel Factory in Turkey. The equipment Slab furnace. Pre-rolling mill. Reversible mill. Seven strip rolling

Get Price### Load Analysis of Rolls in a Rolling Mill A Comparison of

Following are the results of the calculation of the roll load for various passes of the material through the rolling mill on the basis of the output voltage obtained in the strain indicator circuit. III. CALCULATION OF LOAD FROM W.L. ROBERT‟S FORMULA f V c l e Where f Specific rolling force (force per unit width of material) V c

Get Price### ROLLING

is 300 mm and the rolls rotate at 100 rpm. Calculate the roll force and the power required. For annealed copper it has a true stress of about 80 Mpa in the unstrained condition and at a true strain of 0.223 true stress is 280 Mpa. FOUR HIGH ROLLING MILL. PROBLEMS AND DEFECTS IN ROLLED PRODUCTS Porosity Cavity Blow Holes occurred in the

Get Price### A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

In the conventional hot strip mills the minimum strip thickness rolled was (1 5) 2 mm. In thin-slab continuous-cast rolling mills the strip rolled thickness is below 1 mm and the strip caster aims to cast between 2 and 1 mm. In the past it used to take weeks to produce coiled strip from iron ore.

Get Price### The Calculation of Roll Force and Torque in Hot Rolling Mills

Jun 01 1954 · The Calculation of Roll Force and Torque in Hot Rolling Mills R. B. Sims B.Sc. Proceedings of the Institution of Mechanical Engineers 1954 168 1

Get Price### Deformation ProcessingRolling

– Calculate roll separation force ("rolling force") and torqueProcessing LimitsCalculate rolling power. Prof. Ramesh Singh Notes by Dr. Singh/ Dr. Colton 13 Flat Rolling Analysis • Consider rolling of a flat plate in a 2-high rolling mill

Get Price### POWER IN ROLLINGidc-online

The ratio λ = a/Lp = a/√R.∆t is used to calculate the moment arm a λ =0.5 for hot rolling and 0.45 for cold rolling. The torque is equal to the product of total rolling load and the effective moment arm. Since there are two work rolls Torque Mt = 2P.a Consider two high roll mill as shown in the figure.

Get Price### Method of load calculation of electrical drives of rolling

During manufacturing of heavy strips and plates from difficult-to-form steel grades on sheet and wide-strip rolling mills there is a problem of exact calculation of power parameters of rolling.

Get Price### Rolling Millan overview ScienceDirect Topics

A tandem cold rolling mill usually consists of three to five stands of rollers each of which reduces the strip thickness by about 20 to 40 so that

Get Price### Load Analysis of Rolls in a Rolling Mill A Comparison of

Following are the results of the calculation of the roll load for various passes of the material through the rolling mill on the basis of the output voltage obtained in the strain indicator circuit. III. CALCULATION OF LOAD FROM W.L. ROBERT‟S FORMULA f V c l e Where f Specific rolling force (force per unit width of material) V c

Get Price### Rod Mill Design Calculations

EF1Dry Grindingfor the same range of work dry grinding requires 1.3 times as much power as wet grinding. EF2Open Circuit Grindingwhen grinding in open circuit ball mills the amount of extra power required compared to closed circuit ball milling is a function of the degree of control required on the product produced. The inefficiency factors for open circuit

Get Price### POWER IN ROLLINGidc-online

The ratio λ = a/Lp = a/√R.∆t is used to calculate the moment arm a λ =0.5 for hot rolling and 0.45 for cold rolling. The torque is equal to the product of total rolling load and the effective moment arm. Since there are two work rolls Torque Mt = 2P.a Consider two high roll mill as shown in the figure.

Get Price### Rolling (metalworking)Wikipedia

Modern rolling practice can be attributed to the pioneering efforts of Henry Cort of Funtley Iron Mills near Fareham in Hampshire England 1783 a patent was issued to Henry Cort for his use of grooved rolls for rolling iron bars. With this new design mills were able to produce 15 times more output per day than with a hammer. Although Cort was not the first to use grooved

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Stockpile Calculator . The "Smalis Stockpile Calculator" is simple to use requires no research on materials and yet provides the pertinent information regarding all aspects of the stockpile. Simply enter the material to be conveyed and the length of the conveyor that is being considered.

Get Price### Load Analysis of Rolls in a Rolling Mill A Comparison of

Following are the results of the calculation of the roll load for various passes of the material through the rolling mill on the basis of the output voltage obtained in the strain indicator circuit. III. CALCULATION OF LOAD FROM W.L. ROBERT‟S FORMULA f V c l e Where f Specific rolling force (force per unit width of material) V c

Get Price### How to Obtain Rolling Torque Metals Metallurgy

The working roll diameter is 500 mm. Determine the rolling load on the rolling stand if the co-efficient of friction is 0.07. Also determine the rolling torque. Solution Example 2 A billet of area of section 150 mm x 150 mm is rolled to 120 height in a rolling mill with 600 mm roll diameter at a temperature of 1100 °C at 3m/sec.

Get Price### 03 rolling of metalsSlideShare

Aug 26 2014 · Example for cold strip mill process. nzsteel.nz In batches of 9 coils cold rolled steel is annealed to reduce work hardening The 6 roll configuration enables this high speed mill to produce steel of high quality with consistent shape and flatness Cold rolling mill Coils are transferred to and from the annealing furnace The combination

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