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Control of Strip Tension in a Rolling Mill Based on ...

In the metals industry, tandem hot strip rolling mills are used for rolling out thick semi- nished products, e.g., slabs, to thinner at products. The product, which is often referred to as strip, is clamped in each mill stand of the rolling mill train (cf. Fig. 1). As longitudinal tensile stresses in .

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Sensor systems for process optimisation in rolling mills ...

Speed measurement in rolling mills for thickness control 51 70 265 160 83 75 150 210 50 11 115 70 240 270 50 60 500 54 300 20 ASCOspeed in stainless steel protective housing Picture: Wieland Werke AG Technical Data ASCOspeed synchronised version 2 devices ASP5500-300-A-I-S-D-E Measuring distance 300 ±15mm Measuring range up to max. 3000m/min ...

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I2S Uses CompactRIO to Optimize PLC Automation in Steel ...

To optimize the efficiency of our rolling mills, we needed a custom measurement device with accurate analog I/O along with advanced processing to convert the signal from the sensor to an accurate metal thickness. Unfortunately, the PLCs used to automate the rolling mills did not provide the high-speed analog I/O and processing required.

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rolling mill speed calculation formula

rolling mill speed calculation formula - wildpeppersf. Measurement of the forward slip in cold strip rolling using a high,- rolling mill speed calculation formula,The forward slip in strip rolling was defined as the relative difference between the roll surface speed and strip exit speed, [7] developed a new diagnosis method for roll eccentricity of a hot rolling mill under the effect of ...

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Roll Pass Design – IspatGuru

Jun 18, 2014· Calculations of rolling power needed and loads on mechanical equipment. The calculations of load, torque and power is done based on Sims formula from billet/bloom to finishing dimension as a function of geometry, steel grade, temperature and tension. The calculation of temperature is a function of power, dimension and heat transfer co efficient.

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(PDF) A Calculation Procedure and Optimization for Pass ...

The calculation process was programed and applied in the control system of one 1450 mm cold tandem mill successfully, the prediction results was in good agreement with the actual measured ones ...

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The Hot Rolling Process - California Steel Industries

finishing mills, which will roll the steel in tandem with one another. The workhorse roughing mill has 135" wide rolls for rolling 'broadside' (as the first roughing mill is commonly called) to make a slab wider. A 5,000 hp motor drives 42"-diameter work-rolls through 28:1 .

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Calculate Speed Of Roll Mining Mill

Rolling mill speed calculation formula pdf. rolling mill speed calculation formula 2 plays an important role in calculating the rolling.shapes are calculated. Six pass designs used in Swedish mills are analysed. The thesis also includes high-speed rolling of. Calculate those costs.mill roll speeds are usually given in feetminute we.

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Brushed DC electric motor - Speed - calculator - fx Solver

Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications. The speed equation of speed of a DC motor is shown here. Related formulas

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Deformation Processing - Rolling

– Calculate roll separation force ("rolling force") and torque – Processing Limits – Calculate 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

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Bearing Speed Limits & Calculation | American Roller Bearing

To determine the limiting speed, Nlim, of any bearing, find the Ndm value for the specific bearing type in Table II below. Any operating speed that is within 80% of the limit should be scrutinized further. Calculate the bearing's Pitch Diameter (dm) from this formula: The limiting speed, Nlim, in RPM is simply calculated: Example Calculation

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Rolling, Metal | Article about Rolling, Metal by The Free ...

In practical calculations, n 3 is taken as 1 in hot rolling and n 2 is taken as 1 in cold rolling. For carbon steels, the mean specific force is in the range 100–300 newtons per m 2 (10–30 kilograms-force per mm 2 ) in hot rolling and in the range 800–1,500 newtons per m 2 (80–150 kilograms-force per mm 2 ) in cold rolling.

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Channel Weight Calculator / ismc channel weight ...

Stainless Steel 300 Series Weight Calculate Formula: SS303, SS304, 304L, 308, 309, 309L, 310, 316, 316L, 321: Stainless Steel 400 Series Weight Calculate Formula: SS 400, SS410, Stainless Steel 446 Weight Calculate Formula: SS 446: MS(Mild Steel) Weight Calculate Formula: Mild Steel / MS: Copper Weight Calculate Formula: Copper : Cast Iron ...

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Koyo NTHA-2448 Cylindrical Roller Thrust Bearing, Open ...

Koyo NTHA-2448 Cylindrical Roller Thrust Bearing, Open, Steel Cage, Inch, 1-1/2" ID, 3" OD, 13/16" Width, 5700rpm Maximum Rotational Speed by Koyo Price:

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DMS OptiMill, rolling process calculator - Fives in Steel

DMS OptiMill™ offers first class assistance in mill production and pass schedule operation. The pass schedule view gives access to the main parameters, such as tension, speed, rolling force, mill power, tension reel power, mill torque, neutral coefficient, etc. and guides the operator to make the most efficient operating decisions.

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Development of Cluster Mill Simulator for Thin Strip and ...

deflection of cluster rolling mills; a 4-high mill, a 6Hi X type mill and a 10Hi X type mill. Figure 1 shows the mills used for calculation. The rolling mills have the backup rolls (BUR), intermediate rolls (IMR) and work rolls (WR) of the same size and the same materials. These components are positioned symmetrically to the Y = 0 plane and

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What's the difference between hot and cold rolling mills?

According to the calculation formula of rolling force, the formula for calculating rolling force is derived from the decoupling of rolling force and rolling radius of flat state. On this basis, the influence of mechanical structure vibration of cold rolling mill is further considered, and the equation of non-linear vertical vibration system ...

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Rolling Mill - Nucor Steel Gallatin

Rolling mill computer systems calculate setpoints for rolling using extremely complex mathematical models and send signals to engage the descale sprays and to bring the mill roll stands to speed and set the roll gaps. The rolling mill has six stands, numbered F1 - F6 from south to north. Before rolling, the slabs are 55mm or 65mm thick.

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Improvement of Accuracy for Gauge and ... - Nippon Steel

When the strip thickness at the mill entry is H1, its entry speed is V1, the strip speed at the mill exit V2is equal to the speed V2refto realize a target elongation eref, and the strip thickness at the mill exit H2refis equal to a target exit thickness H2, then equations (1) hold true according to the law of constant mass flow. H1V1= H2 refVref

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The Hot Rolling Process - California Steel Industries

finishing mills, which will roll the steel in tandem with one another. The workhorse roughing mill has 135" wide rolls for rolling 'broadside' (as the first roughing mill is commonly called) to make a slab wider. A 5,000 hp motor drives 42"-diameter work-rolls through 28:1 .

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HOT RE-ROLLING STEEL MILLS ANNUAL CAPACITY .

(a) a high speed mill means a mill which produces hot re-rolled products at a speed of 8.5 metres per second or more and a low speed mill means a mill which produces hot re-rolled products a speed less than 8.5 metres per second. (b) nominal centre distance is the pinion centre distance of the pinion stand connecting the last rolling

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Technical Review UDC 621 . 771 : 621 . 783 : 621 . 892 ...

To solve these problems, on the basis of the mill deformation calculation model for crown control (to be explained in the following Sub-section 3.2), Nippon Steel developed a high-accuracy calculation model for mill stretch 15), and this model was applied to actual rolling in the form of absolute gauge-meter AGC. With this technology, it

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Bearing Speed Limits & Calculation | American Roller Bearing

To determine the limiting speed, Nlim, of any bearing, find the Ndm value for the specific bearing type in Table II below. Any operating speed that is within 80% of the limit should be scrutinized further. Calculate the bearing's Pitch Diameter (dm) from this formula: The limiting speed, Nlim, in RPM is simply calculated: Example Calculation

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excell sheet calculation torque speed power for rolling mill

torque ball mill calculation ball mill. excell sheet calculation torque speed power for rolling mill . excell sheet calculation torque speed power for rolling mill . Get Price Work Power and TorqueMarine Diesel The SI units are simpler to calculate Power (Watts) = Torque (Nm) RPM 2p/60 So if the reading on the spring balance was Get Price

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Rolling Mill - an overview | ScienceDirect Topics

A precision rolling mill, built in 2003, with 140 mm roll diameter of the Prymetall company was used for the experiments. During the rolling of the OF-Cu bars the rolling force was measured. There were no forward and backward tensions applied on the copper bars and rolling speed was reduced to a minimum of about 0.75 m/min.

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Rolling Mill - an overview | ScienceDirect Topics

A precision rolling mill, built in 2003, with 140 mm roll diameter of the Prymetall company was used for the experiments. During the rolling of the OF-Cu bars the rolling force was measured. There were no forward and backward tensions applied on the copper bars and rolling speed was reduced to a minimum of about 0.75 m/min.

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Formula for 'Spread' in Hot Flat Rolling -, L. G. M ...

A modified formula has also been devised to take into account not only the geometrical variables but also changes in rolling temperature, steel composition, roll and bar surface condition, and speed of rolling (strain rate). ... and speed of rolling (strain rate). References (1) Ekelund, S. 1953 Steel, vol. 93, August, p. 8. ... 'Calculation ...

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PROCESS OF ROLLING MILLS

Feb 25, 2016· Calculation of roll force is important because calculation of torque and power in a rolling mill is based on calculation of roll force. ... bar speed through the mill. As the rolls wear and the ...

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Laser Systems for Automation and Quality Control in Steel ...

The high scanning speed and the high repetition rate of these laser gauges make this system the ideal choice for todays high speed mill trains. Advantages: High scanning speed: no errors due to vibrations of the object · High scan rate: suitable for highest rolling speeds of up to 150 m/s · Air knives with independent

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Formula for 'Spread' in Hot Flat Rolling -, L. G. M ...

A modified formula has also been devised to take into account not only the geometrical variables but also changes in rolling temperature, steel composition, roll and bar surface condition, and speed of rolling (strain rate). ... and speed of rolling (strain rate). References (1) Ekelund, S. 1953 Steel, vol. 93, August, p. 8. ... 'Calculation ...

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