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torque on a mill stand

A SURVEY OF THE LOOPER-TENSION CONTROL

2011-7-20  tween the last stand and a down coiler is often caused. This can cause tension fluctuations at the finishing mill inter–stand. All these disturbances influence the strip tension and looper angle control performance, thus affect-ing strip thickness, width, flatness and mass flow.-LHC l CRCC Vf Looper C.C w l ref, ref q Main ASR Looper

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Understanding CNC Torque vs Horsepower Destiny Tool

Torque Efficiency Our end mills can have up to 3 rake faces in the cutting edge of the tool. As the tool enters the cut and takes the first 3 to 5 revolutions (and remember you can be running up to 18,000 Revolutions Per Minute) there is a tremendous amount of

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(PDF) Advanced Control Techniques for Rolling Mills

An important condition to guarantee for a high product quality is the equalization of the motor torque acting on the two work rolls. By means of the gap control of a mill stand

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Industrial & Manufacturing Torque Measurement

2020-3-27  Bethlehem Steel, Sparrows Point, MD Plant engineers had deduced that sporadic torque overloads on a rolling stand in the hot strip mill were causing breakdowns of the expensive drive system. What the engineers didn't know was why. Was it a function of the width or...

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Method of equalizing the torque on a drive of a pilger

1992-5-15  What is claimed is: 1. A method of equalizing the torque on a crank drive of a roll stand having a crank shaft operating under an external load, having reciprocating components moved linearly back and forth by the action of the crank drive of a Pilger rolling mill, the components having kinematic parameters and masses, comprising the steps of:

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machines-07-00076-v4.pdf machines Article Dynamic

2. Statement of Problem References [19, 20] describe limiting the dynamic torque by capturing the fed metal when the electric drive is accelerated (pre-acceleration) to ensure preliminary angular play closure. Figure 2 shows a simplified functional chart of the electric drives powering the reversing-stand rolls in Mill 5000, which uses this principle [21].

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Dynamic Torque Limitation Principle in the Main Line of a

2019-12-18  of the elastic torque that the shaft is exposed to when the play is closed. 3. Analysis of Elastic Torque Components when Choosing Play According to the scheme in Figure1a, the drive of Mill 5000 stand rolls is a custom one. A roll line does not have any elements, the weight whereof is comparable to weights of rotating parts of an engine and a

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Influence of a Gap in a Mill Stand’s Drive Line on the

Abstract The elastic torque in a section of the drive line with a gap is determined for a mill stand, in the case of variable external rolling torque. A correction factor is introduced to take account of the gap.

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Dynamic Torque Limitation Principle in the Main Line of a

2021-8-2  Stand roll line, Mill 5000 (a), spindle connection and angular gap closure detailed (b). Figure 1b shows why shock occurs when closing the play δ [15]. Rotating spindle heads collide

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Dynamic Torque Limitation Principle in the Main Line of a

2019-12-6  View 0 peer reviews of Dynamic Torque Limitation Principle in the Main Line of a Mill Stand: Explanation and Rationale for Use on Publons Download Web of Science™ My Research Assistant : Bring the power of the Web of Science to your mobile device, wherever inspiration strikes.

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Constraining the dynamic torque of a Rolling mill stand

We herein consider issues of limiting the dynamic loads in the electromechanical systems of horizontal rolls in the stand of a plate mill. It is shown that shock loads mainly occur during gripping due to gaps in spindle connections; the size of the gap depends on how worn-out those spindles are. We analyze a method of limiting such dynamic loads that consists in gripping workpieces while

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Case Study: High Torque Gear Coupling for Steel Mill

2019-6-29  Case Study: High Torque Gear Coupling for Steel Mill Roughing Stand. A major steel manufacturer needed a large replacement gear coupling as part of an upgrade for a roughing stand drive at one of its U.S. mills. Positioned on the low-speed, high-torque

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High Torque Gear Coupling for Steel Mill Roughing Stand

2021-3-11  roughing stand drive at one of its U.S. mills. Positioned on the low-speed, high-torque shaft between the gearbox and pinion drive, the gear coupling rotates at approximately 10 RPM. The goal was to ensure that the new coupling was capable of transmitting the new, higher torques. The mill contacted several coupling manufacturers,

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Industrial & Manufacturing Torque Measurement

2020-3-27  Bethlehem Steel, Sparrows Point, MD Plant engineers had deduced that sporadic torque overloads on a rolling stand in the hot strip mill were causing breakdowns of the expensive drive system. What the engineers didn't know was why. Was it a function of the width or...

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Implementation of telemetrie on-line monitoring system

2017-10-19  The paper defines the main causes of impermissible dynamic loads in the shaft assemblies of a horizontal plate mill stand. It substantiates the development and commercialization of a stationary telemetry system for continuous control of the torque of the shaft assemblies at the 5,000 mm mill stand at Magnitogorsk Iron and Steel Works, OJSC. The authors determine the main system functions and

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machines-07-00076-v4.pdf machines Article Dynamic

2. Statement of Problem References [19, 20] describe limiting the dynamic torque by capturing the fed metal when the electric drive is accelerated (pre-acceleration) to ensure preliminary angular play closure. Figure 2 shows a simplified functional chart of the electric drives powering the reversing-stand rolls in Mill 5000, which uses this principle [21].

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The Calculation of Roll Force and Torque in Hot Rolling Mills

2021-7-9  Abstract. Equations are derived for the normal roll pressure, specific roll load and torque in hot rolling mills, using the condition for plastic deformation in rolling derived by Orowan, together with von Kármán's equation of equilibrium. Although applying strictly to the rolling of ideal plastic-rigid materials, these equations may be

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(PDF) Control Scheme Using Forward Slip for a Multistand

Implementation of the new forward slip model for the control of a 7-stand hot strip tandem rolling mill shows significant improvement in roll speed set-up accuracy. Parameter based on torque

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Failure analysis of rolling mill stand coupling

2014-11-1  The roughing mill is one of the most loaded parts of the steel plant; it consists of two reversing 3-high mill stands with ten passes, eight in first stand and two in second, Fig. 1.The failures of the rolls with grooves on the 1.stand of the 3-high-roughing mill stand occurred four times, Refs.

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Tool Accessories Atlas Copco

2021-8-12  STAND ALONE SYSTEM The TPS is a stand alone system that works together with Power Focus, Ten-sor DL/DS Drive D312/D31, Micro Torque controllers and EBL RE driver. A pneumatic license and air tool package is available to make the TPS work with RE controlled air tools. OPTIONS All options are activated by a license code. The license code is

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A BASIC UNDERSTANDING OF THE MECHANICS OF

2003-10-15  by design limits for maximum separation force, torque, Hertzian pressure etc, but these criteria are valid only under so called “normal rolling conditions” and even these change continuously with progressive wear in the contact zone. Besides “normal rolling conditions” a stable, theoretical assumption mills experience many different

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TORQUE-TENSION REFERENCE GUIDE Fastenal

TORQUE-TENSION REFERENCE GUIDE Printed in U.S.A. • Supply Part Number: 9702365 • AS 06/14 Torque Poster For additional technical information, contact Fastenal Engineering at [email protected] Nominal Dia. (in.) Threads per inch 307A ASTM A307 Grade A SAE J429 Grade 5 SAE J429 Grade 8 F N L G 9 FNL Grade 9 Clamp Load (Lbs.) Tightening

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How to Obtain Rolling Torque? Metals Metallurgy

2021-8-16  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.

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METRIC BOLT TORQUE TABLE Applifast

2021-1-25  Torque applifast Steel Grade SAE 5 SAE 8 Socket Head Cap Screws Property Class 8.8 10.9 12.9 Socket Head Cap Screw Torque in Pound Foot or (Pound Inch) Torque in Newton Meter Nm Lubed means cleaned, dry bolts, lubricated with standard medium viscosity machine oil. Lubricate all contact areas of the bolts and washers.

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Dynamic torque variation in the drive of a large slabbing mill

1982-10-1  Characteristics of the rolling mill The measurements were performed on a slabbing mill composed of a hori- zontal stand of 1150 mm dia. and a vertical stand of 900 mm dia. (Fig. 2). The two pairs of rolls had individual drives. In the case of one vertical stand the torque was mea- sured in one spindle only, on account of the great

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Torque Limiters altramotion

Metal Producer Multi-Stand Roughing Mills Torque Limiters. Coilers & Down Coilers. Clutches & Brakes. AquaMakks Water Cooled Clutch Brakes. Dry Running Multi-Disc Clutches KMK. Emergency brakes type OOSA & OSA. Emergency brakes type SHD. Emergency brakes type TH/THC.

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Constraining the dynamic torque of a Rolling mill stand

We herein consider issues of limiting the dynamic loads in the electromechanical systems of horizontal rolls in the stand of a plate mill. It is shown that shock loads mainly occur during gripping due to gaps in spindle connections; the size of the gap depends on how worn-out those spindles are. We analyze a method of limiting such dynamic loads that consists in gripping workpieces while

get price

Power and torque analysis from an engine to a grinding mill

Power and torque analysis from an engine to a grinding mill Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Power and torque analysis from an engine to a grinding mill, quarry, aggregate, and different kinds of minerals.

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Case Studies Binsfeld

2020-3-31  Bethlehem Steel, Sparrows Point, MD Plant engineers had deduced that sporadic torque overloads on a rolling stand in the hot strip mill were causing breakdowns of the expensive drive system. What the engineers didn't know was why. Was it a function of the width or...

get price

Case Study: High Torque Gear Coupling for Steel Mill

2019-6-29  Case Study: High Torque Gear Coupling for Steel Mill Roughing Stand. A major steel manufacturer needed a large replacement gear coupling as part of an upgrade for a roughing stand drive at one of its U.S. mills. Positioned on the low-speed, high-torque shaft between the gearbox and pinion drive, the gear coupling rotates at approximately 10 RPM.

get price

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