The hot metal is converted into steel through a steelmaking process called the LD process Flat Products: The steel is cast into slabs, which are then rolled into hot rolled coils in the Hot Strip Mill & Thin Slab Caster Some of the hot rolled coils are further rolled into cold rolled and galvanisedcoils in the Cold Rolling Mill Long Products:
Feb 25, 2019· The vibration demolding of the crystallizer leads to slab thickness deviation in continuous casting process Therefore, in this paper, the dynamic model of the hot strip rolling mill vibration resulting from entry thickness deviation is proposed and its dynamic characteristics are studied First, the dynamic model of vertical vibration in the hot strip rolling mill is established based on .
OVERVIEW OF THE STEELMAKING PROCESS Pellets Sinter Limestone Coke Iron Ore Coal Scrap Blast furnace (Ironmaking) Converter (Steelmaking) Ladle (Refining) Blast Furnace Steelmaking Coal/Natural Gas Plate Hot-rolled bars Rods Tube rounds Rails Slab Billet Bloom Hot-rolled and cold-rolled strip (Coils) Structural shapes
PROCESS FLOW CHART Process Flow Chart- Hot Strip Mill APPLICATION AREA OF THE CANDIDATE GREASE The Slabs from Slabbing Mill and Continuous Casting Shop are fed into the Rehearing Furnace from one end and are discharged from ,
Slab Yards Slabs produced are stored in two slab yards Two slab marking machines installed Slabs sent to Plate Mill and Hot Strip Mill 20 SMS MATERIAL FLOW CHART 21 WASTE MANAGEMENT AND POLLUTION CONTROL-SMS • CO gas produced in the process is collected in a gas holder It is further used as fuel in different units
Cold Rolled Steel Strip is produced, as the term suggests by the further rolling of strip produced by the hot strip mills Prior to cold rolling, the mill scale has to be removed, normally by the Pickling Process which uses mechanical manipulation (around small diameter rolls) and acid to dissolve the surface scale
The Pickling Process CSI’s pickling line started up in late 1994, and typically processes two out of every three coils produced at the Hot Mill Its primary function is to remove the thin layer of oxidized iron, or scale, that forms on the surface of the steel at the temperatures employed during hot rolling
2 Integrated Steel Mill Instruction 21 Production Flow Chart, Products Note: FHS product mix in Phase I includes Billet, Hot-Roll Coil, Hot-Rolled Coil (Non-skinpass), Wire Rod and Bar in Coil 22 Major Equipment in Phase I Process Equipment Specification Quantity Iron Making Blast Furnace 34,350 m 2 Sinter Machine 5×100 m 2
An Effective Inter Stand Cooling in Hot Strip Mill Daniel Hajduk ITA Ltd, Martinska 6, 709 00 Ostrava, Czech Republic tel: +420 596 625 136, fax: +420 596 615 710, e-mail: [email protected]
Secondary scale on hot strip and the impact on wear is another issue Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later K H Schröder July 2003 K H Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS
from the rolls, the process is called simple rolling 12 Hot and Cold Rolling Processes From metallurgical point of view, rolling process can be classified under two broad categories, namely (i) hot rolling and (ii) cold rolling 121 Hot rolling In hot rolling the material is rolled at a temperature higher than its recrystallization temperature
•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 •Power per roll (SI units)= pFLN / 60,000 kW
Variety combined with performance Whether you deal with copper, brass, bronze, or any other copper alloys - our hot rolling mills are first choice for a whole range of materials and dimensions Equally important reasons for choosing our plants are their high productivity and strip quality in terms of flatness and thickness toleranc
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The coils are either sold as hot rolled strip or processed further into cold rolled and coated products, such as hot dip galvanised, electro-galvanised and pre-painted sheet, and tinplate Hot Strip Mill Hot rolled coils ranging between 15mm to 23mm in thickness and widths of 750 to 1850mm through four furnaces, a 2-stand roughing mill, a 7-
(7a) Hot Rolled Coil (9) Cold Formed Sections (7b) Pickled Hot Rolled Coil (3) Organic Coated Flats (2) Electrogalvanized (1) Hot-dip Galvanized L O P T S Q R U V From Hot Strip Mill (6) Finished Cold Rolled Coil Annealing and Tempering Cold Rolling Pickling Tinplating ECCS Electrogalvanising Hot-dip Galvanising Organic Coating Cold Formed .
The innovative team born from this combination offers the market know-how, equipment, engineering and turnkey plants for high-tech hot-strip and plate mills, cold mills and finishing lines for strip and light-gauge strip, for both ferrous and non-ferrous metals, as well as a full range of strip processing lin
Apr 29, 2016· 3D animation - Highest performance for new and existing steel mills
CSI’s Hot Strip Mill includes six finishing mills, which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature, between 1500° to 1650°F, specified to reach certain mechanical properti
Thehot strip mill at Stelco Steel's LakeErie Works (LEW)is represented schematically in Fig 5 Fur-ther details ofthis mill are provided in Ref 15) The time for each step in the process wascalculated from the data supplied by Stelco regarding the dimensions of the mill andthe rolling speeds Anexample the is l distribution >No .
Jan 15, 2019· Hot Strip Mill Process Flow Chart 41 Fresh Cold Rolling Mill Process Flow Chart Hot Strip Mill Process Flow Chart has a variety pictures that amalgamated to find out the most recent pictures of Hot Strip Mill Process Flow Chart here, and as well as you can get the pictures through our best hot strip mill process flow chart collectionHot Strip Mill Process Flow Chart pictures in here ,
Process automation for hot strip rolling mills 14 Level 3-production planning systems 18 , Classic high-performance hot strip mills with sever- , (Continuous Flow Chart) used in a PLC programming environment FBD function block diagram
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 coiling up the lengthened steel sheet for transport to the next process
Process Optimization for Hot Strip Mill* By Toncho KOINO V * * and Junji KIHARA* * * Synopsis In order to search for suitable technological schedule of hot strip mill, , flowchart of the optimization of the operation condi-tions of HSM is shown in Fig 1 2 Control Variables Control variables in this approach are slab dis- charge temperature .
Rolling is the process of reducing the thickness or changing the cross section of a long workpiece by compressive forces applied through a set of rolls, as shown in figure (5-1) Fig (5-1) Most rolling is carried out by hot working, called hot rolling, owing to the large amount of deformation required Hot-rolled metal is generally free of .
Hot Strip Mill Hot rolled coils ranging between 15mm to 23mm in thickness and widths of 750 to 1950mm through 4 furnaces, 2 roughing mills, 7- Stand finishing mill and 3 coilers Slabs are reheated to 1240 ˚C and reduced in the Roughing Mills from 240mm to ±32mm thick, which is then processed through the Finishing stands and then coiled
In the finishing mill, steel strip is rolled from thick slabs through pairs of rollers housed in a continuous train of seven roll stands As the strip is rolled, unwanted lateral movement, known as strip tracking, can cause the strip to collide with the edge of the mill
STEEL MAKING HOT WORKING COLD WORKING acciaierie-valbruna - 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 Muffle furnaces .
Compact Strip Production (CSP), or in conventional hot-strip mills, has increased the requirements for precise mass-flow and thickness control As an initial step to meet these demands, Primetals Technologies has developed a new control concept for rolling ultra-thin hot-rolled strip in the finishing mill of an ESP line
Advanced Process and Quality Control in Hot Rolling Mills Using Eddy Current Inspection Autor: SVEN KLING Speaker: Markus WITTE PRÜFTECHNIK NDT Ismaning, Germany +49 89 99 616 152 [email protected] Abstract Eddy current testing is a common method for the surface inspection of semi-finished products
We have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site surveys, sample analysis, program design, installation, commissioning and maintenance guidance.