In terms of usage, hot rolling processes more tonnage than any other manufacturing process, and cold rolling processes the most tonnage out of all cold working processes. One stand and two frames are made from fabricated steel plates. In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. Different types of flatness defects encountered during cold rolling. Nov 22, 20 cold rolling using roll coolant emulsion in this crm, cold rolling is done on a mecon weanunited plc controlled 3000 tonsm 4 hi reversible mill. Single stand 4hi cold mill hand of mill right to left material. Cold mills are classified into few categories according to their thickness ranges and speeds. Both results show a bearing life three times longer than that of conventional bearings. Material specification of 2%cr, 3%cr, 5%cr, semihigh speed steel are available. Mecon has been awarded the prestigious national award for technical excellence 2000 for development of 6 hi cold rolling mill in india by department of scientific and industrial research dsir, government of india. Shape, size, surface and safety during their inspection. This is only suitable for mass production work, as lower volumes require a quicker change of set up and they will consume a lot of labour and work.
Automation equipment for an aluminium cold rolling mill. Rolling millxian tengye metallurgical engineering co. These rolling mills, extensively used in different industrial units, are preferred for their better functional life and high tensile strength. Request pdf intermediate roll contour of 6hi ucm cold rolling mill in order to solve the problem of flatness defects and roll spalling caused by rolling thin gauge strip in the 1 500 mm ucm. Strengths and benefits of the 6high cold rolling mill.
Tisco has successfully installed abbs millmate strip. The single stand rolling mill governing equation is a. Cold rolling mill rolls forged roll for cold rolling mills performs as a rolling tool to transform materials under normal room temperature, therefore, it is the most wear and tear spare parts during the rolling process. Failure analysis of work rolls of a thin hot strip mill. The sundwig 20high cold rolling mill for production of the widest stainless steel precision strip as well as widest strip made of highstrength carbon steel, copper. If you continue browsing the site, you agree to the use of cookies on this website. In addition it suggests what mill size is most suitable for given ranges of products so as to ensure reasonable ef. The high speed production achieved by modern cold rolling mills requires reliable and robust thickness sensors. Jan 21, 2018 this video shows the various parts of 4hi cold rolling mill. Cold rolling mill how is cold rolling mill abbreviated.
Rolling mills cold rolling mills metal rolling mills. Stresses from hertzian pressure in 4high cold mill back up rolls were measured years ago, the results were never published, but of high interest also, maybe later. As a controller for a rolling mill thickness control which exploits the. Apply to mill operator, finisher, plant operator and more. A basic understanding of the mechanics of rolling mill rolls file. We have engineered and installed wide range of cold rolling mills, skin pass mills as well as bonding mills. The 4hi mill rolls are fabricated with the high quality raw material. Cold rolling mill rolls, rolling mill rolls manufacturer. Our products sell well not only all over china but also in overseas markets. The reversing cold rolling mill is used mainly for producing coils of normal carbon steel in emerging countries, and is used for producing small lots of variety. Cold rolling improves the surface finish and holds tighter tolerances. In india now a days mostly 20 hi and 4 hi rolling mills are installed in bi g steel produ ction units. The selfadaptive control functions have also been implemented in a new mitsubishi 12high cold rolling mill at avestasheffield, described in section 2.
Iron contains impurities in the form of silicon, phosphorus, sulfur, and manganese. Hot rolling mill hydraulic gap control hgc thickness. Rolling mill all ove r the world have started using this grade getting wide benefits. Video of a 4hi cold rolling mill with automatic gauge control, commissioned by mnc. The new rolling mill consists of a coupled pickling linetandem cold mill pltcm, a continuous annealing line and a galvanizing line. Cold rolling mill intermediate roll applies to high precision 6 hi as well as a few 8 hi mill, named from working location between work roll and backup roll, mainly used to control the shape of strip. Aluminum 3004 and 5017 alloys mill rolling load design 1,500 u. So that the material can be passed through them all in order. This type of rolling mill is mainly used in offline applications for cold rolling of soft and medium strip and for a wide range of strip widths. 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.
According to your specific process requests, buhler redex is the. Modeling, simulation and identification for control of. It consists of a quarto mill stand two working rolls and two backup rolls, coiler and uncolier. Cold rolling on a 4 hi reversible mill linkedin slideshare. In comparison to a 4high mill stand, the utilization range is wider. In section 3, a mathematical model has been driven for singlestand cold rolling mill. Trial usage results of wtf bearings in an actual cold rolling mill 5 6. 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.
Cold rolling mills for steel and nonferrous metals include 1 sheet mills for piece work rolling, 2 wideband sheet mills for reel rolling, 3 strip rolling mills for rolling strips 1 mm to 4 mm thick and 20 to 600 mm wide, the strips then being coiled or reeled, 4 foil rolling mills for rolling bands less than 0. Surface finish cold rolled steels are manufactured with a matte finish obtained by rolling with specially roughened rolls on the cold mill and the temper mill. Rolling mills cold rolling mills metal rolling mills hot rolling mills rolling mill manufacturers india better technologies for brighter tomorrows cold rolling is a process by which the sheet metal or strip stock is introduced between rollers, and then compressed and squeezed. This finish helps to maintain effective lubrication during metal forming and improves the appearance of painted surfaces. Rolling mill article about rolling mill by the free. Dataset showing steel cold rolling process parameters for. Find here online price details of companies selling cold rolling machine. Operation of rolling mills schweitzer rolling technology. The rolling process parameters were gathered from the 6 high rolling mill of the steel cold rolling mill line 1 via the intelligent mechatronics system ims and supervisory control and data scada program for the six milling passes to achieve the target thickness as final output. The main building of the cold rolling plant is arranged nearby the south of the battery limit. Cold rolling mill we fabricate a wide range of cold rolling mill machinery with the aid of advanced technology. Rolling mills metal precision machines buhler redex gmbh 75181 pforzeim germany t.
Single stand 4 hi cold mill hand of mill right to left material. The history of the sundwig 20high rolling mill begins in the first half of the last century, when sundwig developed a multiroll cold rolling mill in 1930. With 2%cr, 3%cr, 5%cr material series, we have greatly improved our products both in terms of quality and diversification. Strip scanner systems in their two 5stand tandem cold rolling mills tcm. The new generation of the pilger rolling mill used for the physical modelling of the tube cold rolling. Mecon has been a pioneer in the field of consultancy, design, engineering, manufacturing and supply of rolling mills and processing lines. Life of rolls in a cold rolling mill in a steel plant. We have over 15 years experience in producing cold rolling mills and possess large machining center and advanced metallurgical and mechanical equipment. The 2 hi cold rolling mill is a kind of portable type. Optimization of a cold rolling mill thermo fisher scientific. Life of rolls in a cold rolling mill in a steel plant operation versus manufacture a. The rest of this section gives a summary of roll materials and indicates how to estimate the loads which the rolls must withstand.
Cold rolling using roll coolant emulsion in this crm, cold rolling is done on a mecon weanunited plc controlled 3000 tonsm 4 hi reversible mill. In section 4, architecture and learning algorithm fuzzy neural networkof have been presented. Dataset showing steel cold rolling process parameters for a 6. We can also provide total engineering, including auxiliary equipment such as utility facilities, inspection lines and roll shops. The rolling mill mainly consists of roller, rolling mill house, bearing package, bearing, workbench, rolling guide, rail chair, roller adjustment device, top roll balance device and roller change device, driving device, cooling bed, finishing facilities with cold shear, bundling system with bar counter and wire tying machines etc. 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 51. Increasing demands on the quality of rolling mill products have led to great efforts to improve the con trol and automation systems of the rolling process. Practically the all defects in cold rolling inspected before dispatching the material to the customer at skin pass mill. This type of rolling mill is mainly used in offline applications for cold rolling of soft and medium strip and for a wide range. Electrical room of pl, electrical room of rolling mill incl. Just a few years later, the first alligatortype 20high rolling mill was built, followed in 1958 by the first 20high rolling mill in sundwig four column sfc design. Backed by our extensive experience, we devote much at our focus on process optimization for cold rolling mills. Long life bearings for steel rolling mills wtf bearings.
Amongst specific scrips, isl ended the week gaining 3. The number 2 rolls on this cold rolling mill are made of chilled material. Numerical analysis of intermediate roll shiftinginduced rigidity. Due to different numbers of rollers, the metal coil cold rolling mill is divided into 2 hi, 4 hi, 6 hi, and 12 hi agc. Modeling, simulation and identification for control of tandem. New rolling method of reversing cold rolling mill steel plantech. Rolling is classified according to the temperature of the metal rolled. Davy mckee manufacturer davymckee new 1989 type of mill.
Modeling, simulation and identification for control of tandem cold metal rolling this work aims at showing the deduction of a model, tailored for control, for a tandem cold metal rolling of 5stands, the dynamic simulation of this process and results with application of simf8, a new subspace identification. Jul 14, 2014 video of a 4hi cold rolling mill with automatic gauge control, commissioned by mnc. China cold rolling mill manufacturer, rolling mill, 4high. These machines surpass strict quality tests, thus high performance and optimum functionality are assured. Cold rolling mill intermediate rollcold rolling mill. Cold rolling mill machinery,cold rolling mill machinery. In this types of rolling mill, it includes of a number of nonreversing twohigh rolling mills provide one after other. The diameter of the 6high work rolls amounts to approximately 1. For over three decades mecon has designed, engineered, supplied and commissioned many hot and cold mills ranging medium to large capacities. Strip thickness control of cold rolling mill with roll. Cold rolled steels can be joined using accepted welding practices. Request pdf intermediate roll contour of 6 hi ucm cold rolling mill in order to solve the problem of flatness defects and roll spalling caused by rolling thin gauge strip in the 1 500 mm ucm. Cold mill tcm,crm steel plantech proposes a cuttingedge tandem cold mill 4hi6hi according to the customers needs. Get info of suppliers, manufacturers, exporters, traders of cold rolling machine for buying in india.
The present investigation devises a flatness control strategy for a five. Roll stands, holding pairs of rolls, are grouped together into rolling mills that can quickly process metal, typically steel, into products such as structural steel ibeams. Crm complex6 high reversible cold rolling mill training manual0 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Intermediate roll contour of 6hi ucm cold rolling mill. For the cold rolling mill customers who use for the first time, this is perhaps the most confusing issues.
A method to determinate the thickness control parameters in cold. The 2hi cold rolling mill is a kind of portable type. Rolling mill article about rolling mill by the free dictionary. Outline of reversing cold rolling mill and rolling method as illustrated in figure 1, a reversing cold rolling mill is structured mainly of a mill proper, a winding machine payoff ree l, an entry winding machine tension reel and a deliverywinding machine tension reel.
The cold rolling mill supplied by primetals technologies to tangshan iron and steel group co. In hot rolling mills, premature failure of rolls is a major concern as it adversely affects the mill operation as well as production. Type 2 hi nonreversing cold rolling mill size 16 x 24 wide age 1950s with updates coil i. Cold rolling mill intermediate roll applies to high precision 6hi as well as a few 8hi mill, named from working location between work roll and backup roll, mainly used to control the shape of strip.