hot roll mill flow chart
Production flow chart 2 What Can be Detected? Defects stem from a variety of causes such as poor billet quality, worn rolling mill parts, and process malfunctions Detectable defect types are many and include shells, cracks, pinholes, scabs, inclusions, laps and overlaps (Figure 2), as well as repetitive defects ECNDT 2006 We183 1The Hot Mill rolls slabs weighing up to 30 tons between 30” and 74” Steel slab 8 to 9 inches thick and up to 36 feet long is rolled into strip as thin as 1/16 inches and up to a halfmile in lengthThe Hot Rolling Process California Steel
PROCESS FLOW CHART The basic raw material is medium carbon & high carbon hot rolled coils The coils are slitted on slitting machine for obtaining the required width of hot rolled strips After slitting these hot rolled strips are acidly pickled through the continuous pickling line for removal of scale The Pickled coils are cold rolledRoll productivity is growing for many reasons, perhaps we can talk about a 5% increase (Roll consumption today for long products is down from 10 15 kg/t to 1 4 kg/t; for flat products from 4 6 kg/t to 1 2 kg/t; with strip casting roll consumptiA BASIC UNDERSTANDING OF THE MECHANICS OF
Roll torque can be estimated from the rolling force Torque is equal to force multiplied by the radius at which the force acts We can assume that the roll force is acting perpendicular to the strip at a radius equal to one half of the projected arc lengt h of contact For each roll, the torque is: T = FL/2 Roll power is given by:STEEL MAKING HOT WORKING COLD WORKING wwwacciaierievalbruna stainless steels production e rg o f l a i d ra r o f ms o o Bl s l l mi g n i l l ro r o f ms o o Bl Highqualityisourstandard ® STAINLESS STEEL LONG PRODUCTS Complete process flow Chart Remelted Ingot Stock Billets Stock Stock Hot rolling in coils MuffleSTAINLESS STEEL LONG PRODUCTS Complete process
This type of testing materials is the most suitable when the data are to be used to analyse largestrain processes, such as a slab would experience during its journey through a hot strip mill, while it is being reduced from a thickness of about 300 mm to a final thickness of about 1–2 mm Finite strains of 400–500% can be obtained easily, allowing the simulation of the complete history of hot rolling, including the phenomena at the roughing millThe Hot Strip Mill represents the most productive solution for flat rolled products It provides the highest level of productivity together with a large product mix and outstanding quality Yearly productivity of Hot Strip Mills can vary from 2 to 6 Mtpy, depending on the configuration that is selectedProducts › Flat › Hot Strip Mills Modern rolling mills
In the roll bite the strip gains heat from friction between strip and roll and by the deformation of the metal It loses heat by contact with the roll and it is this heat which must be dissipated by the roll coolant Figure 2shows model ed temperature distributions in a roll around its circumference during hot rolling of The roll steelhotstrip mills, has increased the requirements for precise massflow and thickness control As an initial step to meet these demands, Primetals Technologies has developed a new control concept for rolling ultrathin hotrolled strip in the finishing mill of an ESP line Referred to as “ultrathin rolling control,” the systemFEATURING ROLLING AND PROCESSING Primetals
The Hot Strip Mill represents the most productive solution for flat rolled products It provides the highest level of productivity together with a large product mix and outstanding quality Yearly productivity of Hot Strip Mills can vary from 2 to 6 Mtpy, depending on the configuration that is selectedSTEEL MAKING HOT WORKING COLD WORKING wwwacciaierievalbruna stainless steels production e rg o f l a i d ra r o f ms o o Bl s l l mi g n i l l ro r o f ms o o Bl Highqualityisourstandard ® STAINLESS STEEL LONG PRODUCTS Complete process flow Chart Remelted Ingot Stock Billets Stock Stock Hot rolling in coils MuffleSTAINLESS STEEL LONG PRODUCTS Complete process
G Engberg, L Karlsson, in Fundamentals of Metallurgy, 2005 1151 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 4high) both roll force1 Hot rolling and rolling defects: 11 Front and back tensions: We have seen that the rolling load is dependent on roll diameter, higher the roll dia, higher the roll force Similarly, smaller reductions requires lower roll force In order to reduce the roll force, we can reduce roll1 Hot rolling and rolling defects: 11 Front and back
Hot rolling begins with heating the billet or blooms to a high temperature of around 1100 degrees Celsius The temperature is of particular importance Hot rolling and hot extruding drawing involves working above the recrystallization point of the steel The mill passes therolling mill, dedicated roll cooling systems are required to fulfill the required functions Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method toGENERAL ASPECTS OF ROLL COOLING FOR HOT &
To minimize roll wear, roll cooling water must be applied as close to the point where the rolling stock leaves the roll Typical pressures of cooling water are 2 kg/sq cm to 5 kg/sq cm at a flowThe widest range of hot rolled products, with thickness up to 254 mm, width up to 2050 mm and coil weight up to 36 mt The widest Hot Strip Mill in India, capable of rolling up to 2150 mm A rare product portfolio, perfect for line pipe applications, with the capability to produce X70 grade up to 20mm thickness Ultralow carbon for IF & IFHSJSW Hot Rolled Products
Flat Product Rolling Millsand Strip Processing Lines The reliable and innovative partner for design and construction of advanced hot and cold rolling plants, and processing lines 9/27 Vision History Milestones Business units Manufacturing and EngineeringHot Rolled Coil Futures historical prices: closing price, open, high, low, change and %change of the Hot Rolled Coil Futures for the selected range of datesHot Rolled Coil Futures Historical Prices Investing
STEEL MAKING HOT WORKING COLD WORKING wwwacciaierievalbruna stainless steels production e rg o f l a i d ra r o f ms o o Bl s l l mi g n i l l ro r o f ms o o Bl Highqualityisourstandard ® STAINLESS STEEL LONG PRODUCTS Complete process flow Chart Remelted Ingot Stock Billets Stock Stock Hot rolling in coils Mufflerolling mill, dedicated roll cooling systems are required to fulfill the required functions Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method toGENERAL ASPECTS OF ROLL COOLING FOR HOT & COLD
Hot rolling begins with heating the billet or blooms to a high temperature of around 1100 degrees Celsius The temperature is of particular importance Hot rolling and hot extruding drawing involves working above the recrystallization point of the steel The mill passes therollrolling mills appropriate for high precision rolling as the new rolling mill was selected 22 Outline and features of PFB rolling mill As the new rolling mill, two stands of the threeroll rolling mill were selected (Fig 1) The major feature of the threeroll rolling mill is its ability to suppress the variations of dimension between theTechnical Report UDC 621 771 25 Progress of Bar and
Flex Mill® Steelmaking Equipment for Hot Rolled One of the most energyefficient steelmaking facilities in the world 165ton EAF with a taptotap time of less than 38 minutes Ability to direct charge EAF with up to 100% scrap substitute material, HBI, DRI, etc Only North American millFlat Product Rolling Millsand Strip Processing Lines The reliable and innovative partner for design and construction of advanced hot and cold rolling plants, and processing lines 9/27 Vision History Milestones Business units Manufacturing and EngineeringDanieli Wean United Flat Product Rolling Mills and
Round Bars Spec Diameter, in Diameter Tol Hot Roll Steel Round Bar A36 Hot Rolled Up to 03125, incl +/ 0005" Hot Roll Steel Round Bar A522A flow chart is a representation of sequence of operations in a processing plant or in a process For example, if we want to prepare dried vegetables, the sequence of operations will be sorting, washing, peeling, slicing and then drying either under sun or in a mechanical dryer ButPROCESS FLOW CHARTS AND PLANT LAYOUT FLOW
The widest range of hot rolled products, with thickness up to 254 mm, width up to 2050 mm and coil weight up to 36 mt The widest Hot Strip Mill in India, capable of rolling up to 2150 mm A rare product portfolio, perfect for line pipe applications, with the capability to produce X70 grade up to 20mm thickness Ultralow carbon for IF & IFHSSteel process flowlines 1 STEEL PROCESSING FLOW LINES 2 The tlowlines in this booklet are designed to give viewers a graphic impression of how steel is processed The drawings are not to scale or all inclusive, but they offer teachers,Steel process flowlines SlideShare
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