ingot is moved to the rolling mill where it is rolled into one of three intermediate shapes called blooms billets or slabs as shown in figure 5 2 e 2 Cross sectional Fig 5 2 52 Flat rolling and its analysis Flat rolling is illustrated in Figures 5 1 It involves Non electrical prime movers can be used to drive the dc generator of the Ward Leonard drive For example in diesel electric locomotives and ship propulsion drives the generator is driven by a diesel engine or a gas turbine Examples of applications are rolling
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Whether the ABB drives are used on paper machines coa ters calendars or winders mills can expect fast startups and high reliability ABB uses its in depth knowledge of the pa permaking process to deliver drives that integrate easily with other mill automationFig1 Block diagram of a cycloconverter There are other newer forms of cycloconversion such as ac ac matrix converters and high These converters however are not popular yet Some applications of cycloconverters are • Cement mill drives • Rolling mill
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Academiaedu is a platform for academics to share research papersPaper machine drives system ABB s Paper Machine Drive System PMC800 gives papermakers increased performance greater energy savings and improved product quality Whether the ABB drives are used on paper machines coaters calendars or winders mills
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323 Rolling of plates 122 324 Rolling of bars and rods 126 325 Rolling heavy sections 137 326 Rolling of non ferrous metals and alloys 143 327 Cold rolling of sheet strip and foil 146 4 Rolling Equipment and Systems 168 41 Mill Stand ComponentsThe 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
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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 In this rolling mill there are two rolls used Two High Reversing Mill In this type of mill the rollers are both adjustable In these mills rotation of that two rolls is made in two different directions In this operation the metal is passed between two rollers that rotate
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Chapter 1 — PREFACE / INTRODUCTION 1 1 PREFACE / INTRODUCTION Rolls are tools used in rolling mills to reduce the cross section of metal stock The weight of rolls may vary from a few kilograms up to 250 tonn Under rolling conditions the contactGear drives deliver power to indus trial equipment such as bulk material conveyors mixers pumps and paper mills The reliability that translates into greater uptime and profitability begins by specifying and selecting the proper drives for these critical applications
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Examples plants CD player disk drive mechanics aircraft or missile car suspension engine rolling mill high rise building XY stage on stepper machine for IC Some other applications where Cycloconverters can be used are cement mill drives ship propulsion drives Rolling mills and mine winders washing machines water pumps and used in industries as well If any further more queries on this topic or on the
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In rolling mill drives often 200 300 of the base speed is used The mechanical strength of the rotor limits the maximum speed of the motor Fig 1 SPWM carrier sine input 2 level PWM outputAt the rolling stage a hydraulic actuator is used to create a roll compressive force that compresses the steel strip The rolling torque created by a motor drive helps control the rolling speed Using SimMechanics Simscape and SimHydraulics we can model the mechanical electrical and hydraulic elements of the roller respectively without having to derive the equations
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Non electrical prime movers can be used to drive the dc generator of the Ward Leonard drive For example in diesel electric locomotives and ship propulsion drives the generator is driven by a diesel engine or a gas turbine Examples of applications are rollingThe mill used either steel or porcelain rollers Between the years and the Hungarian milling industry upgraded and expanded the use of stone mills combined with roller mills in a process known as Hungarian high milling
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Gear drives deliver power to indus trial equipment such as bulk material conveyors mixers pumps and paper mills The reliability that translates into greater uptime and profitability begins by specifying and selecting the proper drives for these critical applicationsThe rolling mill shown can be converted to a powered machine by mounting an electric motor into the base and constructing an appropriate power train for it A variation on a rolling mill called a beading machine is used by sheet metal workers to form sheet stock
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ingot is moved to the rolling mill where it is rolled into one of three intermediate shapes called blooms billets or slabs as shown in figure 5 2 e 2 Cross sectional Fig 5 2 52 Flat rolling and its analysis Flat rolling is illustrated in Figures 5 1 It involves Examples plants CD player disk drive mechanics aircraft or missile car suspension engine rolling mill high rise building XY stage on stepper machine for IC
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Casey s mechanical inventory consists of various lines mills mill stands furnaces pumps rolls etc CASEY EQUIPMENT CORPORATION 275 KAPPA DRIVE Fig1 Block diagram of a cycloconverter There are other newer forms of cycloconversion such as ac ac matrix converters and high These converters however are not popular yet Some applications of cycloconverters are • Cement mill drives • Rolling mill
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Gear drives deliver power to indus trial equipment such as bulk material conveyors mixers pumps and paper mills The reliability that translates into greater uptime and profitability begins by specifying and selecting the proper drives for these critical applicationswhen used on actual machine continuous hot rolling mill 161 Sealed type bearing doesn’t require greasing and effectively improves the environment no grease leaking Double row tapered roller bearings 161 Uses pin type cage to maximize rated load and further
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