The slab is rolled in roughing mill 5 or 7 times repeatedly to reach the minimum thickness requirement of around 30 mm. The roughing mill also contains edger rolls which are used to roll the edge of slab and center it. The hot strip mill can be either a high performance mill or a compact mill.
ادامه مطلبG. 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 …
ادامه مطلبHot Rolling is employed for rolling of steel slabs to hot strips in hot strip mills. Like any other hot rolling operations, rolling of hot strip is also a plastic deformation of the material of the slab caused by compressive force applied through a set of rolls. The cross section of the slab is reduced by the hot rolling process.
ادامه مطلب•Roll Force: F= LwY avg •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
ادامه مطلبrolling mill Width of plate w is large ... Using slab analysis we can derive roll pressure distributions for the entry and exit zones as: h 0 and h b are the same thing 2tan1 ff RR H hh
ادامه مطلبHot rolling. This process stretches a slab into a strip. The slab is reheated to approximately 1250°C and rolled in hot conditions. The resultant strip steel is wound into a roll like toilet paper (hot coil). Chains for lifting; Toughrollers; Conveyor chains for conveying semi-finished products
ادامه مطلب4 x Rolling mill Rolling material:non-ferrous metals and alloys Width of a basis 270-280 mm Width of of the cladding components: 295-300 mm 3 Metal: 270-280 mm Thickness initial strip basis (steel) 6-7,5 mm Cladding components: 0,35-0,45 mm 3 Metal: 3,2-3,8 mm Speed rolling till 3 m/sec cladding 0,3-0,6 m/sec Mass of a roll 3 t.
ادامه مطلبThe material requirements of copper and copper alloys, including brass, bronze, and ever more new materials, are what determines the design of a cold rolling mill. It depends on your product mix and its required capacity whether the best solution is a tandem non-reversing or a reversing cold mill. SMS group offers you CVC ® plus 4-high, CVC ...
ادامه مطلبThe ASP 6-high can be made in any number of configurations. ASP has converted standard 4-high rolling mills to 6-high rolling mills to improve strip surface, flatness, gauge accuracy, increased reductions, reduced roll cost, reduced grinding cost, and faster roll changes.
ادامه مطلبUsed to roll both ferrous and non-ferrous metals, the Z-Mill is designed to make heavy reductions at high speeds. The 20-Hi roll cluster contains 12 rolls and eight backing bearing assemblies. A rigid, compact mill housing eliminates deflection of work rolls and produces a uniformly close gauge tolerance strip.
ادامه مطلبFour-high mill Small-diameter rolls (less strength & rigidity) are supported by larger-diameter backup rolls Cluster mill or Sendzimir mill Each of the work rolls is supported by two backing rolls. 7. •Use a series of rolling mill and each set is called a stand. •The strip will be moving at different velocities at each stage in the mill.
ادامه مطلب8-Hi Strip Rolling Mill Introduction Parameters Features Inquiry Introduction 8-Hi Strip Rolling Mill is driven by support roller, deviated from the work roll bearing roll center installation. So that the reduction of the diameter of the work rolls is not …
ادامه مطلب58 Used 480mm steel strip Hot rolling mill. Raw material Product specifications Motor power: 2Hi roughing mill 4000KW Medium rolling vertical rolling mill 800KW ZP1 2Hi rolling mill 2500KW ZP2 2Hi rolling mill 2500KW JL1 vertical finishing mill 250KW...
ادامه مطلبCold Rolling Mill; Thickness Control; Roll Eccentricity; Fuzzy Neural Network; Eccentricity Compensation 1. Introduction Rolling strip is widely used for automobile manufactur-ing, food packaging, electric appliances, ma-chinery, light industry, instruments, communications, mil-itary affairs and other fields [1]. The design of a control-
ادامه مطلبBrowse an excellent selection of used steel strip hot rolling mill available at Alibaba. Top quality, and numerous used steel strip hot rolling mill …
ادامه مطلب1997 SMS Hot Plate Rolling Mill. Manufacturer: Demag This line has the capacity of producing 2,000,000 Tons/Year. Hot Rolling Mill for Steel plates, was constructed in 1997 and has gone through several upgrade. The last major upgrade was done in 2013 at a cost of...
ادامه مطلب1997 SMS Hot Plate Rolling Mill. Manufacturer: Demag This line has the capacity of producing 2,000,000 Tons/Year. Hot Rolling Mill for Steel plates, was …
ادامه مطلبare used principallyin blooming mills, heavy-plate millsand hot strip mills, i.e. applicationsinvolving considerable axialforcmbined with low to medium speeds. During operation onlyone roller row is purelyaxiallyloaded. The other row isnotloaded. To make sure that the bearing kinematicsisnot impaired, the cupsofthe double-row tapered roller ...
ادامه مطلب58 Used 480mm steel strip Hot rolling mill. Used 480mm steel strip Hot rolling mill.It was made in 2010 and shut down in 2019.It was online now.The written time is December 28,2020. If you want to quote or further information on this product, please fill out the form below.
ادامه مطلبUsed 15.5" United 4-Hi Cold Rolling Mill for Steel: RM-450. Manufacturer: United 15" cold mill for steel / very nice mill !!! Manufacturer - United Engineering / new 1950's - Upgrades in 1995 = revamped, new thyristor drives, new hydraulic screwdowns, and new AGC Status - …
ادامه مطلبMcMillan Conroy Machinery specialises in the sale of used metal processing machinery. We sell individual machines like ROLLING MILLS,SLITTING LINES,COILHANDLING EQUIPMENT, from UK and European Industries. We sell complete second hand factories producing brass and copper strip,from scrap copper to finished strip.
ادامه مطلبTwo-High: Generally, a 2-HI mill is used for hot or cold breakdown and finishing of bar, sheet or strip. A wide range of sizes with separating force capacities from 10,000 lbs. (4.53 MT) to over 3,000,000 lbs. (1360 MT) are available. Three-High: A 3-HI mill is an economic milling solution for the breakdown of rod and ingot. Four-High: A 4-HI mill may be used for finish rolling of …
ادامه مطلبmills. Contradictory to the currently used on-line model, the new model takes the work roll flattening and back-up rolls contact area into consideration. Also the influence of strip- and work roll grades is included. The model enables increased rolled strip length and prolonged lifetime of the rolls, because of improved process control.
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