Hot Strip Mill Horsepower Calculation Formula

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Rolling (metalworking) - Wikipedia

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 …

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(PDF) MECHANICAL ENGINEERING FORMULAS AND REVIEW MANUAL ...

The API diesel fuel with energy output of 990 kw-hrs. The engine consumed 12.15 kg of fuel per hour with a heating mechanical efficiency of the engine is 92%. Assume a drum of value of 45,130 kJ/kg and 137.4 kg of air at 15.5ºC per hour. fuel contains …

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Google

Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for.

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Camber, The unkind Curve - Welded Tube Pros

section. For hot rolled coil the mill supply upper limit is typically ½" in 20 feet. The second and third strip shape problems are; Edge Wave, deviation vertically from the horizontal plane (a sinusoidal wave) and Center Buckle, deviation of the center section of a strip from the horizontal plane of the strip edges.

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HP Calculation - Practical Machinist

Lets take the previous example of 600feed, 2Radial & .250 Axial it gives. Material Removal Rate = 300 cu.In/min. now per the above mentioned Calculator Req. HP = 300/3, which is 100HP. Now using GWizard with the same parameters .. The MRR =300 and HP = 63 HP.

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The Hot Rolling Process - California Steel

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process.

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Ball Mill Working Principle And Main Parts

Ball Mill Working Principle. To be chosen according to the grinding material, material is composed of a ball mill feed end of the hollow shaft is arranged in the tube body, when the ball mill cylinder rotation time, grinding body due to inertia and centrifugal force, the effects of friction, making it attached to the cylinder liner on the cylinder body away, when taken to the height of a ...

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Water Cooling Flow Control on Hot Strip Mill

Cooling Water Flow Control on a Hot Strip Mill F Several run-out table pumps feed cooling water to the header tank, which supplies the laminar flow cooling tubes on a hot strip mill. Constant water level in the header tank produces a constant pressure at the flow control valves in the laminar flow lines and allows good flow control.

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Roll Pass Designing in Continuous Bar Mills

Roughing mill 28" Roughing mill I1 to C4 Intermediate or stretching mill C5 to C10 Finishing mill 21-Apr-09 Ansar Hussain Rizvi 21-Apr-09 Ansar Hussain Rizvi The purpose of bar rolling is to obtain a long product through changing its shape at each stand.

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Motor loads calculation - Electrical Engineering Centre

How to calculate Motor Loads. Electrical motor loads are calculated from power in kW and full rated load in kW.Following is the formula how to calculate Motor loads. Example : We have 1 unit Induction Motor with 30 horsepower (hp),running with 34.9 amps for amperage load and 460 volts 3 phase and power factor value is 0.75 and motor efficiency ...

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(PDF) Camber and wedge compensation in hot strip rolling

The formula of eq . (7) should be ... Sims, R.B., "The calculation of roll force and torque in hot-rolling mills", ... simulates uneven rolling forces applied in the roughing stages of the hot ...

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Kilowatts to horsepower (hp) conversion calculator

Kilowatts to mechanic / hydraulic horsepower. One mechanic or hydraulic horsepower is equal to 0.745699872 kilowatts: 1 hp (I) = 745.699872 W = 0.745699872 kW. So the power conversion of kilowatts to horsepower is given by: P(hp) = P(kW) / 0.745699872.

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Rolling of steel in Hot Strip Mill – IspatGuru

The output capacity of a compact hot mill is normally in the range of 3.5 million tons per annum, while the high-performance mills can achieve up to approx. 5.5 million tons per annum. High throughput for the HSM asks for a minimum number of passes in the roughing mill which is of particular importance for semi continuous HSM.

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American Wire Gauge Conductor Size Table

the noted resistance and apply Ohms Law to calculate the voltage drop across the conductor. Current (ampacity) Notes: The current ratings shown in the table are for power transmission and have been determined using the rule of 1 amp per 700 circular mils, which is a very conservative rating. For reference, the National Electrical

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Rolling of Metals

•Roll-strip contact length L •Average strip width w –despite the fact that spreading, or an increase in width, may actually occur if edger mills are not used •Average true stress of the strip in the roll gap Y avg •Assumes no friction and thus predicts lower roll force than the actual value •Power per roll (SI units)= pFLN / 60,000 kW

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Electric Motor Torque Calculation Formula & Torque ...

For three phase AC motor torque formula: T = 1.732 x V x I x pf / (2 x pi x N (rpm) / 60) V => Input AC Voltage in volts (line to line voltage) I => Input AC Current in amps. Also while reducing the motor power the torque will be reduced. i.e if you are …

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Understanding tangential cutting force when milling ...

Detailed description of these formulas and supporting illustrations were published in the July 2010 issue of CTE (see "New Mill" by E. Isakov, p. 44). Engagement Factors The engagement factor of a workpiece material (E f ) is a dimensionless coefficient included in formula (2) to correlate tangential cutting force with the ratio of the ...

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Tapping Formulas and Calculations - Guhring, Inc.

132 Technical Tapping Formulas and Calculations ! " ! # $% & & & $ % # ...

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3 Ways to Calculate Torque - wikiHow

Multiply the distance, force, and sine to find the torque. The full formula for torque when you have angled force is. τ = r × F × s i n θ {displaystyle tau =rtimes Ftimes sintheta } . The result is expressed in newton-meters (N∙m). For example, suppose you have a radial vector 10 meters long.

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mill load pressure calculation

Jan 1 2003 Successful hot roll design is dominated by the calculations of some important 3 3 4 Mill load 21 mill motor and the whole process of roll pass design to determine the pressure distribution at the roll and workpiece . Read more

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Strip Thickness Control of Cold Rolling Mill with Roll ...

been developed for hot or cold mill processes. The Brit-ish Iron and SteelResearch Association (B1SRA) AGC method based on the gaug meter principle and the feede forward AGC method using the delivery time of the strip have been widely utilized in steel rolling mills [3]. Strip products thickness precision is an important quality parameter.

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Wallace Racing - Automotive Calculators

Drag Racing Calculators,Calculators to find 1/4 mile ET and MPH, CID,Piston Speed,gear ratio,carburetor size,margin of victory,Engine calculator, Calculates relative horsepower, air density, density altitude, virtual temperature, actual air pressure, vapor pressure and dyno correction factor and more.

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Deep Drawing Force Calculator - CustomPart.Net

Deep Drawing Force Calculator. Calculate the required force to deep draw a piece of sheet metal based on the drawing ratio, sheet thickness, and the ultimate tensile strength of the material. The drawing ratio is a measure of the severity of the drawing operation and is the ratio of the initial blank diameter to the punch diameter.

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Roll pass design in continuous bar mills

Important Formula to Calculate arc Area 23. Important Formula to Calculate arc Area where: C - is the central angle in DEGREES R - is the radius of the circle of which the segment is a part. 24. Flow Chart to Design Pass For Maximum Elongation 25. Important formula to calculate nominal Weight of bar Diameter x Diameter Weight = 162.163

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Steam Calculators: Steam Turbine Calculator

Calculation Details Step 1: Determine Inlet Properties Using the Steam Property Calculator, properties are determined using Inlet Pressure and the selected second parameter (Temperature, Specific Enthalpy, Specific Entropy, or Quality).

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Required Water Pump Horsepower Calculator

Required Water Pump Horsepower. Use this form to estimate the brake horsepower required. Brake horsepower is the power out of the drive motor, and the power into the water pump and is how most pumps and drive motors are specified. Also calculate the total power requirements (energy use rate).

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AHeatTransferTextbook

by an oven, toaster, or hot water heater is an order of magnitude beyond our capacity.The energy consumed by an automobile can easily be three orders of magnitude greater.If all the people in the United States worked continuously like galley slaves, they could barely equal the power output of even a single city power plant.

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Basics of Web Tension Control Summary

Hot brakes & web breaks. • Rewind Applications If taper tension is required. • Point - to - Point Constant torque on a constant radius equals constant tension. do go–Nto – Good You get what you get, based on roll build T= TQ R Constant 7 TQ rpm SW = × T= TQ R Constant – Good T= TQ R Constant Constant Constant HP is constant Manual ...

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Amazon: Mr. Gasket Hot Rod Calc Street and Strip ...

About Calculated Industries The Hot Rod Calc Road and Strip Performance Calculator is manufactured by Calculated Industries, and distributed by Mr. Gasket a division of Prestolite Performance. Founded in 1978, Calculated Industries (CI) is the country's leading manufacturer and marketer of specialty calculators and digital measuring tools.

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A simplified method to calculate the rolling force in hot ...

It is well known that there are sharp peaks (friction hills) in the specific roll pressure curves predicted by Sims formula and Цeликoв formula which result in large errors for hot rolling. In this paper, a new specific roll pressure formula is derived from the Navier-Stokes equation (N-S equation) by the hydrodynamics method (HM) with assumptions that strip …

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Glossary of Forest Engineering Terms | Forest Operations ...

Drawbar horsepower Tractor's flywheel horsepower, minus friction and slippage losses in the drive mechanism and the tracks or tires (22). Draw shear Carrier-mounted, single-action, anvil shear used in mechanized cutting operations. Blade is drawn through the tree, toward the carrier (9). Dray Sled used for yarding logs (24). Drum See winch ...

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(PDF) Methodology for Calculation of Rolling Load and ...

Rolling load calculation: 3.1 Properties of Material to be used for Hot Rolling: Material – A36 Mild Steel UTS – 400 Mpa Yield Strength – 250 Mpa Elongation – 20% Carbon – 0.26 Density – 7800 kg/m^3 Poisons ratio – 0.26 Shear Modulus – 79.3 Gpa Table 1: Effect of Temp on UTS PASSES TEMPARATURE ( ̊C) ULTIMATE TENSILE STRENGTH ...

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Hot Strip Mill - an overview | ScienceDirect Topics

G. Engberg, L. Karlsson, in Fundamentals of Metallurgy, 2005 11.5.1 Hot rolling. Mill data from the hot strip mill has been used to calculate the mean flow stress in each pass, assuming the material to be elastic – ideally plastic. The roll force model used was a classical slab method with constant friction assumed in the roll gap. For the roughing mill (reversible 4-high) both roll …

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POWER IN ROLLING

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.