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To improve hotsteelstrip rolling mill operations trial attempts at work roll surface lubrication have been made by various investigators throughout the world during the last decade Some European tests are briefly described Most of the investigations have been somewhat inconclusive possibly because they were not undertaken with sufficient
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work roll of stand F2 in the hot strip mill at ArcelorMittal Dunkerque Fig 4 Twelve nozzles were used to lubricate the work roll at a nozzle to top of roll distance of about 120mm The prototype oil lubrication header was installed above the conventional emulsion header and roll cooling header With this con
Learn MoreHot strip mills began to apply the roll lubrication technology Past studies reveal that roll lubrication can reduce the mill separating forcetorque5 and the tertiary scale thickness6 For a 4high hot rolling mill roll lubrication occurs in two zones ie the contact zone between the work roll and backup roll and the deforming
Learn MoreAug 20 2002nbsp018332Hot roll lubrication has been known about for a long time and the latest research has demonstrated the advantage and value of this method to mill owners and their customers The key lies in the commitment and professional approach by all concerned parties to make this method work Increasing the Competitiveness of Hot Rolling
Learn Moretechnical collaboration delivers insight on steel mill technical collaboration delivers insight on backup roll lubrication in the reversing hot Get Price hot rolling mill centralised lubrication systems a cooling section to cool the hot strips to reeling temperature and a reeling system used to wind the hot roller mill tables Get Price
Learn MoreThe application of oil lubrication in hot strip rolling has many advantages for the process i e reduced roll force reduced energy consumption better strip surface quality and reduced roll wear On the other hand oil lubrication may also induce severe disturbances for several control loops in a tandem hot rolling mill which can reduce
Learn MoreAug 23 2019nbsp018332Rolling mills requirements for lubrication Grease lubrication such as the input ramp of the furnace in the hot strip mill the pusher the discharger the stand the stand the mill ramp the mill work the motor bearing the mill press the universal joint shaft Grease with bracket cutting machine looper guide output ramp tumbling machine coiler washing machine turning machine
Learn MorePerformance of the Grease in Roughing Stand at Hot Strip Mill The grease was tried out for lubrication of Work Roll Bearings of 4 stands of Roughing Mill R2 to R5 at Hot Strip Mill Period of Trial 83 days Observations Grease was tested for its pumpability with
Learn MoreDOI 101002srin199605524 Corpus ID 137913072 Developments of work roll bite lubrication at SSAB tunnplat AB hot strip mill inproceedingsLagergren1996DevelopmentsOW titleDevelopments of work roll bite lubrication at SSAB tunnplat AB hot strip mill
Learn MoreSome aspects on lubrication and roll wear in rolling mills strip grades were used The obtained model is tested successfully in two other hot strip mills Contradictory to the currently used online model the new model takes the work roll flattening and backup rolls contact area into consideration Also the influence of strip and work roll grades is included
Learn MoreP Kucsera et al Hot Rolling Mill HGC Thickness Control Improvement 98 Another way to determine the thermal expansion of the work roll is the modelling of the heat transfer between the work rolls and the strip This depends on the roll speed strip thickness the properties of the strip roll gap contact time and cooling parameters
Learn MoreImprovement of the work roll performance on the 2050 mm hot strip mill at Iscor Vanderbijlpark Volume 98 Issue 3 G Walmag R J Skoczynski J P Breyer
Learn MoreMay 30 2013nbsp018332Roll changing device This is a special device designed to attach to the neck of the roll to be removed or inserted into the rolling mills Mill protection devices These are to ensure that the forces applied to the roll chocks are not of such a magnitude to fracture the roll necks or damage the housing Roll cooling and lubrication systems
Learn MoreOur finishing mill stands are equipped with CVC 174 plus the worlds most successful technology package for strip profile contour and flatness control This explains why more than 450 hot mill stands worldwide operate with CVC 174 plus technology today Heres what this technology can do for you The system combines axial work roll shifting with special CVC 174 grinding a work roll bending
Learn MoreWork rolls in the hot strip mill withstand extreme service conditions especially when electrical steels are rolled resulting in severe roll wear and fatigue Highspeed steel HSS work rolls and rolling lubrication are applied to the mill to improve roll wear and fatigue Tests show that HSS work rolls manifest good performance in wear fatigue and oxidation resistance during electrical
Learn MoreIt has been reported that appropriate lubrication can improve the work roll life by 2040 model was used to assess the thermal performance of high speed steel work rolls in a hot strip mill
Learn MoreTo integrate a new roll gap lubrication system into an existing hot strip mill is a challenge problem A lubrication expert system was developed and embedded into finish rolling setup system The reference value setup by expert system is downloaded to roll bite lubrication PLC via finish mill PLC to open oil spraying valve and regulate the oil concentration
Learn Morestrip grades were used The obtained model is tested successfully in two other hot strip mills Contradictory to the currently used online model the new model takes the work roll flattening and backup rolls contact area into consideration Also the influence of strip and work roll grades is included
Learn Morebetter lubrication roll protection and low power consumption the use of hot rolling oil is ever increasing in hot strip structural and rail mills at least partially at few stands of the mill The requirement and application of different plants were quite different Hence one oil may not be suitable for
Learn MoreThe experiments of cold rolling lubrication technology for St12 strip steel with 4 cold rolling lubricant samples A B C and D were carried out in a 4High reversing cold rolling mill
Learn MoreThe Hot Strip Mill HSM at Siderar is a continuous mill composed by 3 roughing stands R2R3R4 and 6 stands like finishing group F5 F6 F7 F8 F9 F10 In this mill the stand R4 can be considered as the first stand of the finishing mill even if it does not work in
Learn MoreApr 01 2015nbsp018332In hot rolling mills premature failure of rolls is a major concern as it adversely affects the mill operation as well as production Analysis of failed roll materials and actual rolling conditions in service are therefore necessary to understand the roll failure mechanism and thereby improve the wear resistance and extend the service life of rolls
Learn MoreLubrication 18 Lubrication of roll neck bearings 18 are used mainly in blooming mills heavy plate mills and hot strip mills where considerable axial forces occur in combination with low to moderate speeds During The work rolls in fourhigh strip mills and the rolls in twohigh
Learn MoreSKINPASS MILLS FOR HOT STRIP Skinpassed hot strip has many advantages Skin Work roll bending Lowquantity lubrication LQL is a lubrication concept for skinpass mills which is also suitable for utilization in the final millstand of a tandem mill In this system
Learn MoreApplication Hot strip mill work roll Service period 1 486 h Without any maintenance or regreasing Bearing appearance Good no flaking and slight wear Grease penetration Water content in grease About 280 New 300 About 1 Before cleaning of grease Outer
Learn MoreOct 29 2015nbsp018332With the increasing demand on higher strip quality the profile and flatness of hot rolling strips have become subjects of concern particularly for compact strip product CSP hot strip mills Based on the roll contour control model and rolling process a comprehensive shape control technology is proposed and applied to CSP hot strip mill of Lianyuan steel which includes optimization and
Learn MoreSMS SIEMAG Hot Strip Mills 2 ADAPTING existing hot strip mills to presentday market requirements Owing to their size and high investment volume hot strip mills have an extremely long life Almost 40 of the 140 conventional hot strip mills currently in operation all over the world were built between 1960 and 1970 At that time these mills
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