Cold rolling technology for carbon - ANDRITZ

6-high mill at pre-assembling Full range flatness actuators for all cold rolling mill types (9) Intermediate roll set with grease lubricated roller bearings (10) Strip blow-off system (11) Selective roll multizone cooling and emulsion system (12) Back-up roll change device . 04 05

tandem cold rolling mill - luceconfort.es

Optimization of cold rolling mill process to improve, settings for the tandem cold rolling mills HT Zhu 2005 8 presented paper on Optimization of Cooling Spray Water in Cold Strip Mill to optimize the amount of cooling spray water that can contribute to the shape performance of the final strip products...

Tandem Rolling Process :: Total Materia Article

Further treatment steps include slitting, skin-pass rolling, coiling and packing. Tandem cold rolling mills are named by their stand arrangement and designed as "sheet mills" if they reduce hot band to sheet gauge or "tin mills" if they roll the same incoming material to tinplate stock.

Cold rolling mill technology - EN Pages 1-8 - Flip PDF ...

Cold rolling mill technology - EN was published by claudia.stingl on . ... (S6-high) 350,000 – 850,000 up to 1,500 DiscontinuousDiscontinuous tandem mill 4-high, 6-high, S6-high 1-1.6 mill. up to 1,500 DiscontinuousContinuous tandem mill 4-high, 6-high, S6-high 1.6-2.4 mill. ... Roll cooling systems Selective roll cooling spray ...

Cold Rolling – Process Overview - Matmatch

Modern, efficient cold rolling mills can roll pickled sheets or strips at speeds of up to 4 m/s and tandem mills that are continuously working can produce up to 2.5 million tons of cold rolled steel annually. The advantages of cold rolling. Cold rolled products have the following advantages over hot rolled: greater dimensional accuracy

Rolling Mills: 6 Different Types of Rolling Mills [Images ...

In the rolling process, the job is drawn through a set of rolls due to interface friction, and the compressive forces reduce the thickness of the workpiece or change in its cross-sectional area.. The types of rolls used in rolling mills are depended upon the shape, size and the gap between the rolls and their contour. Because of workability and limitations in …

Steel Mill Products - Pro-Chem-Co

Steel Mill Products. PRO-CHEM-CO's steel mill products are used to pickle, roll, clean, temper, lubricate, and condition cold rolled and galvanized steel. Our ISO-9001 registered facility is located close to the heart of the steel industry and allows for next-day deliveries to most points East of the Mississippi.

METALS Improving quality and cost-efficiency in cold ...

02 Overview tandem cold rolling mill Superimposed strategies and solutions are available for: • Pass scheduling and set-up model • Threading and unthreading • Tension, torque and/or roll force distribution in multi-stand mills • Roll gap stabilization to run wedge strip — 03 Main drives — 04 Gauge control

A set-up model for tandem cold rolling mills | Request PDF

A one-dimensional model presented by Suryanarayana [A set-up model for tandem cold rolling mill, M.Tech. Thesis, IIT, Bombay, 1998] is used to …

Precision Nozzles and Systems for Roll Cooling Solutions ...

Mill Types Roll cooling studies can be performed for the following flat rolling mills: n Steel hot strip mills n Tandem steel cold rolling mills n Reversing steel cold rolling mills n Steel plate rolling mills n Every type of aluminum hot, cold and foil rolling mill n Every type of NF-rolling mill (copper, brass etc.) Lechler scope of supply

Development of Rolling Oil for High Speed Cold Strip Rolling*

No. 2 tandem cold mill at Toyo Kohan Kuda-matsu Plant was reformed to a 5 stand high speed cold tandem mill with a maximum speed of 2 137 mpm in 1975 by adding 2 more stands. Lubrication require-ments are very critical for high speed cold rolling. The viscosity of rolling oil decreases as the temper-

how meny reduction for 6high roling mill

Nominated – Bar and Shape Rolling Division. ... tandem rolling mills with variable roll diameters, 5-high & 6-high rolling mills with intermediate roll ... to project yield improvements from reductions in dimension variance in plate mill operations. ... gage and shape control strategies employed by many hot and cold mills today.

Rolling Mills | CISDI UK

Rolling Mills. Over 50 years of experience in the rolling mill industry has enabled our team to develop innovations which bring hot and cold rolling processes into the 21st century, vastly improving efficiency and leaner production costs. CISDI not only provides rolling equipment which will increase your productivity.

Completion of Cold-Rolling Line Project Continuous ...

This cold-rolling line project included construction for one Pickling Line Tandem Cold Mill (PLTCM), one Continuous Annealing and Processing Line (C.A.P.L.TM), and one Continuous Hot-Dip Galvanizing Line (CGL). Our Group delivered the Continuous Annealing and Processing Line (C.A.P.L.TM)*1.

PROCESS OF ROLLING MILLS

The goal of mill and the roll guide setup is to get the first bar rolled when changing product, on the cooling bed within the tolerance so that it is a saleable product.

High-speed rolling by hybrid-lubrication system in …

High speed rolling technology for thin gauge steel strips is very important for improving the productivity of tandem cold rolling mills. As a matter of fact, production of steel strips is shifting to thinner gauges and higher strength materials with the aim of reducing the weight of steel products from the viewpoint of environmental preservation.

Technological control for cold rolling processes

Multi-roll mills Two-stand mills DCR mills Tandem mills Temper mills Foil mills Superimposed strategies and solutions are avail-able for: Pass scheduling and Set-up model Threading and unthreading Tension, torque and/or roll force distribu-tion in multi-stand mills Roll gap stabilization to run wedge strip Entry Thickn. Entry Thickness Deviation

GENERAL ASPECTS OF ROLL COOLING FOR HOT & COLD …

In cold rolling applications roll cooling always goes along with lubricating of the roll gap, when using water-based emulsions or dispersions and rolling oil. The so-called selective roll cooling is applied mainly for cold rolling mills to control the asymmetrical flatness deviations the …

Plate-out efficiency related to oil-in-water emulsions ...

Oil-in-water emulsions are generally used in tandem cold rolling mills as lubricants, as they provide good lubricity and cooling performance. Lubricants are supplied by either a recirculation system or a direct application system. The dynamic concentration and the plate-out are known as the two main lubrication mechanisms, respectively, used in the two …

The Hot Rolling Process - California Steel

finishing mills, which will roll the steel in tandem with one another. The workhorse roughing mill has 135" wide rolls for rolling 'broadside' (as the first roughing mill is commonly called) to make a slab wider. A 5,000 hp motor drives 42"-diameter work-rolls through 28:1 gears to reduce the slab's thickness by as much as 2-½".

Comprehensive revamp of PAO Severstal's tandem mill by SMS ...

PAO Severstal had awarded SMS group the order to revamp the four-stand tandem cold mill "1700" at the Cherepovets works in Northwest Russia. The objective of the project was to increase the capacity of the mill, expand the product range and improve the product quality. ... by effective roll and interstand cooling. Automatic work roll changing ...

Comprehensive Optimization Control Technology of Rolling ...

tion and cooling. The advantage of recirculation systems includes low oil consumptions, which are preferably applied to tandem cold rolling mills. In direct application systems, high-concentration and low-flow emulsions are supplied to the strip surface for lubrication at the upstream of the roll

Enhanced Speed Measurement for AGC-Mass Flow

in Tandem Cold Rolling Mills. It enables tighter control of thickness by providing faster and more accurate control of the roll gap. Utilizing Mass Flow AGC control techniques permit operations to achieve specified thick-ness requirements over a greater percentage of the coil length, thus greatly improving the final yield.

Blair Strip Steel | New Castle, PA

BLAIR's mill operations include Big George and Little Tom, state-of-the-art cold rolling tandem mills, capable of rolling strip in thicknesses .031" thru .700" (.80 mm – 18.0 mm) with precision tolerances in widths up to 21 1/2 inches (546 mm). Blair uses both Ebner Hydrogen and Tenova HNX annealing facilities.

Effect of work roll shifting control on edge drop for 6-hi ...

For tandem cold mills with work roll shifting, the roll contours of different stands are usually identical to facilitate roll scheduling. For a 1500 6-high mill to be researched, the curve parameters H arc, L arc, H l, and L l were set to 400 μm, 155 mm, 0 mm, and 0 mm. The work roll shift is given by L use.. Cooperative control strategy by shifting work rolls of several …

Lubrication Control Technology in Tandem Cold-Rolling Mills

Lubrication is one of the most important factors for improving the productivity of tandem cold rolling mills, as improved lubricity makes it possible to increase the rolling speed of thin steel ...

US20070175255A1 - Method of and rolling mill stand for ...

A method of and a rolling mill stand for cold rolling of a metallic rolling stock ( 1 ), in particular rolling strip ( 1 b ) with nozzles for gaseous or liquid treatment media, with which the rolling stock ( 1 ) is displaced under a processing temperature through a roll gap ( 40 ) of a roll pair of upper working roll ( 2 ) and lower working roll ( 3 ) to undergo plastic deformation, and which ...

Long-term improvements,short-term roi — Metals Magazine

MQL was successfully installed and tested on two different industrial tandem cold-rolling mills in Europe (Figure 2). Both customers confirmed the industrial reliability and effectiveness of this new lubrication technology as demonstrated by significant improvements of strip surface cleanliness and roll-force reductions.

Fundamentals of Roll Cooling and Control of Flatness at ...

roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely exceeding 160 oC depending on product. Roll Bite temperatures in slower heavily drafted stands can peak in the region of 300oC, diminishing with the

Shape and Gauge Control of Strip in a Cold Rolling Mill ...

Comprehensive control of the surface roughness and shape of a two stand cold reversing mill is achieved by the optimization of the process parameters, such as rolling force and tension. The rolling force, strip elongation rate, and tension of rolling mill are optimized to achieve comprehensive control of the surface quality and shape of the strip.

Company News

Classification of Cold Rolling Mill Faults. When the cold rolling mill is in operation, it will inevitably have various faults because of some factors. We call it the fault of the cold rolling mill. If we only look at the extent of the impact, the cold rolling mill can be divided into the following situations in terms of faults. MORE

Rolling of Steel in a Modern Long Product Rolling Mill ...

The final dimensional quality of the rolled product is determined by the rolling stands within the finishing mill. The dimensional accuracy in the final product depends on many factors including the initial stock dimensions, roll pass sequence, temperature, microstructure, roll surface quality, roll and stand stiffness and the stock/roll friction condition.

Cold rolling on a 4 hi reversible mill - SlideShare

6. Cold rolling - using Roll Coolant - emulsion In this CRM, Cold rolling is done on a Mecon Weanunited PLC controlled 3000 tons/m 4 Hi reversible mill. As the name suggests the 4 Hi mill employs 4 rolls, two these are the work rolls and the other two are the backup rolls.