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application of power electronics in rolling mills

application of power electronics in rolling mills

Application of Power Electronics Electrical4U

24/02/2012  Besides power electronics are extensively used in modern traction systems and ships. Industries: Almost all the motors employed in the industries are controlled by power electronic drives, for eg. Rolling mills, textile mills, cement mills, compressors, pumps, fans,

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POWER IN ROLLING - idc-online

Power is applied to the rolling mill by applying Torque to the rolls and by using roll strip tension.The total rolling load is distributed over the arc of contact. However, the total rolling load can be assumed to be concentrated at point along the arc of contact ata distance ‘a’ from the line of centers of the rolls.

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Principles and Applications of Metal Rolling

2.4 Rolling Torque and Power 98 2.4.1 Lever arm method 98 2.4.2 Rolling power calculation 101 3. Rolling Practices 104 3.1 Layout of Stands 105 3.1.1 Single stand 105 3.1.2 Multi stands side by side 105 3.1.3 Looping train 106 3.1.4 Two-stand tandem mill 107 3.1.5 Stepped trains of side by side stands 107 3.1.6 Tandem continuous stands 107 3.1.7 Semi-continuous mill layout 109 3.1.8 Cross ...

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Rolling mills - SlideShare

20/07/2016  4. o Rolling is used mainly to produce sheet of metal o or simple cross sections, such as rail tracks. o a drive (motor) for applying power to the rolls and controlling the speed o rolling mills are one of the most demanding applications for motor drives o Typical motor sizes for modern rolling mills is 600kW to 1200kW 5.

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Technologies and Best Practices in Steel Rolling ...

Reheating furnaces are the major consumers of energy in the form of thermal energy, accounting for about 60–65 per cent of total energy consumption of rolling industries.  The utilities associated with reheating furnaces and rolling mills (compressed air system, process cooling system, etc.) are of conventional type and the efficiency levels were not up to the design mark.

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Energy Management in Small and Medium sized Re-rolling mills

19/06/2017  Electrical load application in the rolling mill demands high precision and high overload ability. It is characterized by quickly changing loads, rapid alternation between driving and braking actions, constant torque in a wide speed range, and large torque steps. High-efficiency drives are the most suitable solutions during rolling of steel.

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Rolling Process: Working, Application, Defects, Type of ...

5. Cluster Rolling Mills: In this type of rolling mill, there are two basic roles that are backed up by two or more rolls which are bigger than those two basic rolls. These backed up rolls give more pressure to the basic rolls to heavily press the strip.

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Industrial Drives and Applications - ElectricalNotesEngine

8 rows  a set of devices to convert electric energy into mechanical energy and to regulate the

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

other applications (cold rolling, back up rolls) have similarities in other components. Therefore I hope this book will be useful in giving a general understanding of especially big components - large cross sections - which might suffer from damage for various reasons.

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Microprocessor-based control of steel rolling mill digital ...

Abstract: Algorithms are presented for the digital control of double-loop DC machine drives used for applications where severe constraints on motor speed and position render conventional constant-torque or power control inadequate, such as in steel rolling mill drives. It is shown that the heavy current demand associated with maximal acceleration control can be reduced by using a form of ...

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Application of AC motors and drives in Steel Industries

stand rolls in a rolling mill. Synchronous motors are used when power requirement is very high and speed of rolling is low. The R0/V0 stand motors of Hot Strip Mill of Rourkela Steel Plant are synchronous motor. These motors are driven by cyclo converter. The capacity of R0 stand motors are 3 MW x 2 Nos, 953 Volt, 1121 Amps, 70 RPM. The capacity of V0 stand motors are 1 MW X 2 Nos at 953 volt ...

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Technical Article Rolling Mills Revamp

Rolling mills represent an extremely demanding application for both bearings and rolls, which must perform under high operating temperatures, loads and speeds. During the rolling process, the roll rotates and, simultaneously, the load is applied through the bearings on the semi-finished strips. One point on the roll neck supports mainly tensile stress with a maximum value σ max, while the ...

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

other applications (cold rolling, back up rolls) have similarities in other components. Therefore I hope this book will be useful in giving a general understanding of especially big components - large cross sections - which might suffer from damage for various reasons.

Get Price

Drive selection for rolling mills - Russula

20/05/2010  Besides the cost of replacement of power cables, and new motor mounting modifications; many times it is necessary to replace the gearboxes. Rolling mill DC motors are best at low speed, high torque applications, while AC motors typically need to run above 800rpm to be cost effective. Also the case for higher efficiency of AC motors is many times negated by the wasteful braking methods of

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SOLUTIONS FOR COLD ROLLING MILLS - Spray

SOLUTIONS FOR COLD ROLLING MILLS D1 SECTION TABLE OF CONTENTS. SPRAY TECHNOLOGY FOR ALL THE PROCESSES IN YOUR COLD ROLLING MILL COLD ROLLING MILLS INTRODUCTION No matter what you need to wash, rinse, lubricate, cool or dry, Spraying Systems Co. has the ideal nozzle for your application. We offer hydraulic and air atomizing nozzles in a thousands

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Types Of Rolling Process In Manufacturing Industry

The rolling process is done both hot and cold, which is accomplished in rolling mills. A rolling mill is a complex machine having two or more supporting rollers, working rollers, drive motor, roll stands, working rollers, coupling gear, flywheel, etc. According to the requirement of the process and technical issues, these rolling machines are available in different shapes and sizes. Each ...

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Rolling Mills: 6 Different Types of Rolling Mills [Images ...

30/09/2020  In the rolling process, the job is drawn through a set of rolls due to interface friction, and the compressive forces reduce the thickness of the workpiece or change in its cross-sectional area.. The types of rolls used in rolling mills are depended upon the shape, size and the gap between the rolls and their contour. Because of workability and limitations in equipment, rolling is done in the ...

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Everything you need to know about rolling process ...

05/06/2020  This is achieved in two ways; hot and cold rolling. in an application, the hot rolling processes are more tonnage than any other manufacturing process, and cold rolling processes are the most tonnage of all cold working processes. The pairs of rolls are held on a roll stands, which are group together into roll mills that easily process metal ...

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Introduction to Power Electronic Converters Electrical4U

24/02/2012  Power electronics converters mainly comprise of solid-state switches, such as Power MOSFET, Power BJT, IGBT, Thyristors etc., and lossless components, namely inductors and capacitors. Inductors and capacitors are ideally suited for use in power converters as the power loss in these components are zero as compared to resistances.. Resistances lead to a loss of power, and thus a

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

other applications (cold rolling, back up rolls) have similarities in other components. Therefore I hope this book will be useful in giving a general understanding of especially big components - large cross sections - which might suffer from damage for various reasons.

Get Price

Microprocessor-based control of steel rolling mill digital ...

Abstract: Algorithms are presented for the digital control of double-loop DC machine drives used for applications where severe constraints on motor speed and position render conventional constant-torque or power control inadequate, such as in steel rolling mill drives. It is shown that the heavy current demand associated with maximal acceleration control can be reduced by using a form of ...

Get Price

Technical Article Rolling Mills Revamp

Rolling mills represent an extremely demanding application for both bearings and rolls, which must perform under high operating temperatures, loads and speeds. During the rolling process, the roll rotates and, simultaneously, the load is applied through the bearings on the semi-finished strips. One point on the roll neck supports mainly tensile stress with a maximum value σ max, while the ...

Get Price

Drive selection for rolling mills - Russula

20/05/2010  Besides the cost of replacement of power cables, and new motor mounting modifications; many times it is necessary to replace the gearboxes. Rolling mill DC motors are best at low speed, high torque applications, while AC motors typically need to run above 800rpm to be cost effective. Also the case for higher efficiency of AC motors is many times negated by the wasteful braking methods of

Get Price

Types Of Rolling Process In Manufacturing Industry

The rolling process is done both hot and cold, which is accomplished in rolling mills. A rolling mill is a complex machine having two or more supporting rollers, working rollers, drive motor, roll stands, working rollers, coupling gear, flywheel, etc. According to the requirement of the process and technical issues, these rolling machines are available in different shapes and sizes. Each ...

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Research and application of approximate rectangular ...

24/02/2021  Research and application of approximate rectangular section control technology in hot strip mills ... widely used in the manufacture of equipment such as power, electronics, and military industries. Silicon steel strip products have excellent magnetic properties, high-precision shape and size, and high-quality surface, and are used in the core parts manufacture of products such as inverter ...

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Rolling Mills: 6 Different Types of Rolling Mills [Images ...

30/09/2020  In the rolling process, the job is drawn through a set of rolls due to interface friction, and the compressive forces reduce the thickness of the workpiece or change in its cross-sectional area.. The types of rolls used in rolling mills are depended upon the shape, size and the gap between the rolls and their contour. Because of workability and limitations in equipment, rolling is done in the ...

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Rolling of Metals: Process and Principles (With Diagram)

The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled ...

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SOLUTIONS FOR COLD ROLLING MILLS - Spray

SOLUTIONS FOR COLD ROLLING MILLS D1 SECTION TABLE OF CONTENTS. SPRAY TECHNOLOGY FOR ALL THE PROCESSES IN YOUR COLD ROLLING MILL COLD ROLLING MILLS INTRODUCTION No matter what you need to wash, rinse, lubricate, cool or dry, Spraying Systems Co. has the ideal nozzle for your application. We offer hydraulic and air atomizing nozzles in a thousands

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EASY TO DRIVE MEDIUM VOLTAGE ... - Power Electronics

Power Generation and Water applications. Outdoor equipment is a challenge that has been overcome by Power Electronics’ Solar Division, and the best engineering practices have been migrated to the XMV660 OUTDOOR by featuring the unit with: Totally sealed electronics protected from dust and moisture. Conformal coating on electronic board shields PCBs from aggressive atmospheres.

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Microprocessor-based control of steel rolling mill digital ...

Abstract: Algorithms are presented for the digital control of double-loop DC machine drives used for applications where severe constraints on motor speed and position render conventional constant-torque or power control inadequate, such as in steel rolling mill drives. It is shown that the heavy current demand associated with maximal acceleration control can be reduced by using a form of ...

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Industrial Drives and Applications - EEENotes2U

1.Power Electronics and Its applications ... Rolling mill drives, cement mill drives, paper mill dries and textile mill drives. HOW TO SCORE GOOD MARKS IN VTU EXAMS: FOLLOW G.K DUBEY TEXTBOOK, The University question papers set by following the same book, For Unit-8, Follow the following material and also just check previous questions and solutions from following material links

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Electronic overspeed switch EGS 41 ensures safe rolling ...

Applications; Electronic overspeed switch EGS 41 ensures safe rolling mill operations; Electronic overspeed switch EGS 41 ensures safe rolling mill operations . Back . Safely-Limited Speed (SLS) during maintenance and setup procedures; Adhering to provisions in the Machinery Directive relating to the protection of persons; Straightforward implementation with certified EGS 41 (SIL 2 / PL d ...

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rolling operation or roll mill its types and application ...

25/11/2016  tandem rolling mill or continuous rolling mill: tandem rolling mill process. It is a modern rolling mills and the rolling is done by one pass. The rolling is done in several passes for traditional several stands and reduction that take place successive roll. The number of stands like as 2 to 18. Those are either hot or cold rolling mill types.

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SOLUTIONS FOR COLD ROLLING MILLS - Spray

SOLUTIONS FOR COLD ROLLING MILLS D1 SECTION TABLE OF CONTENTS. SPRAY TECHNOLOGY FOR ALL THE PROCESSES IN YOUR COLD ROLLING MILL COLD ROLLING MILLS INTRODUCTION No matter what you need to wash, rinse, lubricate, cool or dry, Spraying Systems Co. has the ideal nozzle for your application. We offer hydraulic and air atomizing nozzles in a thousands

Get Price

Rolling processes - Al-Mustansiriya University

Steelmaking provides the most common application of rolling operations. Figure (5-2) illustrates the sequence of steps in a steel rolling mill to show the variety of products made. Similar steps occur in other basic metal industries. The work starts out as a cast steel ingot that has just solidified. While it is still hot, the ingot is placed in a furnace where it remains for many hours until ...

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Highest performing Hot Strip Mills Primetals Technologies

Application. The working area of Power Cooling is not only dedicated to thick strips (> 18mm) with high cooling rates. Due to the extended control of water flow and therefor control of heat flux it is also used for strips with a critical combination of thickness-speed ratio and required cooling rates and for standard steel grades, e.g. using the Power Cooling in laminar mode. The combination ...

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Metal Rolling - Manufacturing Process

In a metal rolling process, rolls, stands, bearings, housing, motors, and other mechanical equipment are all a necessary part of the manufacturing operation. The place where all the equipment for metal rolling manufacture is set up is called a rolling mill. Rolling mills often vary in

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Everything you need to know about rolling process ...

05/06/2020  This is achieved in two ways; hot and cold rolling. in an application, the hot rolling processes are more tonnage than any other manufacturing process, and cold rolling processes are the most tonnage of all cold working processes. The pairs of rolls are held on a roll stands, which are group together into roll mills that easily process metal ...

Get Price

Rolling Mills - Pepetools

Rolling Mills. Pepetools engineered a unique housing that maximizes durability and increases strength, all while decreasing overall mass. Thanks to a new generation of precision machining, Pepetools "ULTRA" Series rolling mills are stronger than ever. Standard on each mill is a high performance 4:1 reduction gear box, turned with a high ...

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