Cold rolling mills yogijidigi can be your preferred supplier for cold rolling mills starting from planning, engineering, implementation and modernization of your plant. Development of cluster mill simulator for thin strip and. In order to prevent whipping of the work rolls, they are supported by means of intermediate. Effect of work roll shifting control on edge drop for 6hi. In comparison with their suitability for high rolling speeds of up to 40 ms, they have high load carrying capacity. Used 6 hi reverse cold rolling mill for carbon steel built by japan ihi hitachi containerized ontruck including huge rolls rolls. Longstanding experience as a leading supplier of cold rolling mills as a lifecycle partner for cold rolling mills, primetals technologies offers complete solutions and support packages for cold rolling mills that extend from the initial investment idea, to mill planning, layout, engineering and construction, up to turnkey plant installations and fullscale plant modernizations. A new 6high cold rolling mill hereinafter hc mill has been developed in order to solve these shape problems. 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. Crm complex6 high reversible cold rolling mill training manual0 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Jan 17, 2017 hr coil is feed in payoff in 6hi cold rolling mill. Opting for our efficient plant designs means you can rely on achieving the precise strip reduction and high surface qualities you want. Hi rolling mill, jindal steel hisar is having 20 hi and 4 hi rolling mills, whereas ruchi strips and alloys ltd and national steel. A brief on cold rolling of steel in a 4 hi mill by hussam adeni lubricant specialist 2.
Cold rolling mills archives nidec industrial solutions. They are classified by the type of product that they produce and by their design features. It is able to produce cold strip with a minimum thickness of 0. Edge drop describes the undesired thickness drop in the edge zone of cold rolled strips. At the cr mill it undergoes the following operations. Sendzimir cold rolling mill pdf download absiograv. 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. Rigid 20 high cold rolling mill machinery, high precision stainless steel rolling mill. The 2hi cold rolling mill are used for rolling of sheets, plates and coils of softer metals like aluminum, copper, brass, lead etc.
Agc hydraulic 6 hi cold rolling mill 700mm carbon steel 390m min speed. Cold mills, in a wide range of types and sizes are available. Preset model of bending force for 6high reversing cold rolling mill based on genetic algorithm. Cold rolling mill rolls, rolling mill rolls manufacturer. Then a cvc work roll curve designing scheme was proposed and it was carried out on some cold rolling mill considering the requirement of. The rolls are the main tool for the rolling process and the life of the roll is. Reason for it is the chang ing roll flattening in the transition from. Strip thickness control of cold rolling mill with roll. In the aspect of the shape control means, the researches in the past focus on the roll optimization, mill type selection, process optimization, local. Cold rolling mill on sales quality cold rolling mill supplier. A basic understanding of the mechanics of rolling mill rolls file. Our key technologies, high efficiency pickling tank, fwc side trimmer, 6hi uc mill, hyropf and carrousel tension reel, support production of the latest. Multiroll cold rolling mills are used to process high grade steel strip and nonferrous metal strip. 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, as well as for breakdown rolling in offline applications.
Aluminum 3004 and 5017 alloys mill rolling load design 1,500 u. If you continue browsing the site, you agree to the use of cookies on this website. Apr 09, 2017 in bpsl kolkata, 5000 lpm is maintained for mm wide 6hi rolling mill and 6000 lpm for 1250 mm wide 6hi rolling mill. Cuttingedge coldrolling mills primetals technologies.
Intermediate roll contour of 6hi ucm cold rolling mill. Us8365567b2 rolling mill and rolling method for flat. In nonoriented silicon steel production, the work rolls shifting control is widely applied in 6 high tandem cold mills and the differences of the control characters of different stands have been gradually recognized. Ppt cold rolling oils powerpoint presentation free to. Cold rolling speeds vary but modern mills operate at exit speeds as high as 3000 m per. Axial force analysis and roll contour configuration of four. Apr 12, 2017 yogiji digi sees itself as an authority in cold rolling. After the reduction of the strip in the tandem cold mill and subsequent annealing, the double cold reduction mills. The performance of a conventional 4high mill is not satisfactory in these requirements. In india now a days mostly 20 hi and 4 hi rolling mills are installed in big steel production units.
Carbon steel 6 hi cold rolling mill, hydraulic pressure down. Thus, it was desired to develop a new type of mill which is capable of controlling the rolled strip shape even with changes in rolling conditions. Tandem mills coiltocoil, continuous, with pickling line. Single stand cold reversing mills 4hi, 6hi, 8hi, 20hi cluster. A rolling simulator for the cluster mill, especially the 6hi x and 10hi x type mills besides the conventional 4high mill, has been developed for evaluation of rolling thin strips and foils.
The aluminium cold rolling mill can process the aluminium coil in thickness of 610mm from casters and hot rolling. Ideal for breakdown, run down, tempering and skin pass operations. Included here are reversing t and,c o iu e m lk p cluster stands. In metalworking, rolling is a metal forming process in which metal stock is passed through one. Suitable for hot or cold rolling of ferrous and nonferrous metals. In section 4, architecture and learning algorithm fuzzy neural networkof have been presented. Development of cluster mill simulator for thin strip and foil. According to the number of rolls the rolling mill can be designed as 20 hi, 12hi, 8 hi, 6 hi, 4 hi and 2 hi rolling mills. Hot rolled coil that are cleaned at the pickling line hrp, is being processed at the cold rolling mill total 700,000 tons annual capacity to reduce the thickness to desired values. Automatic 2 hi cold rolling mills, rs 5000000 unit, vaid. This machine provides accurate size and output desired by clients and advanced methods of production which directly reflect in higher productivity and. For cold rolling mills sms siemag supplies cold rolling mills for almost all products and capacities. We have manufactured more than 200 such rolling mills ranging from 50 mm width to 2000 mm width running successfully all. The diameter of the 4high work rolls amounts to approximately 1.
Davy mckee manufacturer davymckee new 1989 type of mill. The six high cold rolling mills is more suitable for carbon steel, stainless steel and special steel coil rolling. Bright band formation on the top of the surface during rolling. 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 sixhigh cold rolling mill is more suitable for carbon steel, stainless steel and special steel coil rolling. Cold rolling of steel strips the raw material for cold rolling is typically a hot rolled coil hrc.
You benefit from our 20high mills because they are packed with stateoftheart mechanics, hydraulics, electrics, and automation. Strengths and benefits of the 6high cold rolling mill. Cold rolling on a 4 hi reversible mill linkedin slideshare. Dancut danieli knives for long product rolling mills rolling mills. Introduction generally, the products produced in hot rolling mills and cold 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. Amazing fastest homemade wood lathe machines working skills extreme wood cutting machines easy duration. Skinpass mill and tension leveler eiji mukae jp steel plantech co. In section 3, a mathematical model has been driven for singlestand cold rolling mill. This phenomenon causes severe damage for the mill machine and strip quality fig. Ghaziabad is having 6 hi rolling mill, jindal steel hisar is having 20 hi and 4 hi rolling mills.
We can also provide total engineering, including auxiliary equipment such as utility facilities, inspection lines and roll shops. We have engineered and installed wide range of cold rolling mills, skin pass mills as well as bonding mills. Scribd is the worlds largest social reading and publishing site. Mill has all the capability and capacity to produce cold rolled sheet of practically table top flatness. The combined pickling linetandem cold mill is a prime example of the newly developed hightech mills and is designed as endless mill for an annual capacity of 1. No band pattern mark on the surface of the rolls work rolls, is visible, after withdrawal from mill. Single stand 4 hi cold mill hand of mill right to left material. Most steel mills have rolling mill divisions that convert the semifinished casting products. Video of a 4hi cold rolling mill with automatic gauge control, commissioned by mnc. With 2%cr, 3%cr, 5%cr material series, we have greatly improved our products both in terms of quality and diversification.
Uses seal to enable use of special bearing lubricating oil. Review on cold rolling mill roll deformation ijoer. Cold rolling mills 2hi, 4hi, 6hi, 12hi, 20hi 31 ads. Pdf preset model of bending force for 6high reversing. For backup roll bearings of special multistage rolling mills for backup roll bearings of special multistage rolling mills. 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. Strip faults, due to rolling mill vibration the integrated control process is made to analyse the vibrations which are produced on the work roll chocks and backup roll chocks. Mar 21, 2020 controlling the profile and edge drop in the cold rolling process is crucial especially in applications involving silicon steel. Cold mill tcm,crm steel plantech proposes a cuttingedge tandem cold mill 4hi 6hi according to the customers needs. Whats important to you are not only high flexibility and product quality, but also sustained, costeffective operation of your plants. In section 5, thickness control with roll eccentricity compensation has been proposed.
Sms group offers various cold roll mill technologies for copper, steel and aluminum like tandem cold mill, 18 hs mill, reversing mill, skin pass mill, single stand cold mill. Report on best available techniques bat in the german. Rolling mills cold rolling mills metal rolling mills. Operator controls mill operation of the comprehensively modernized tandem cold mill. Used 1250mm 12hi reversible cold rolling mill,1set of single stand cold rolling mill and 2 sets of double stands cold rolling mill. This book discusses as well the different types of rolls for various rolling mills, including blooming, plate, sheet, sheet bar, small section, heavy product, skin passing, and cold rolling mills. Presentation of cold rolling free download as powerpoint presentation. Carbon steel 6 hi cold rolling mill, hydraulic pressure down cold rolling machine. Crm complex6 high reversible cold rolling mill training manual0. Report on best available techniques bat in the german ferrous metals processing industry final draft deutschfranzosisches institut fur umweltforschung dfiu frenchgerman institute for environmental research university of karlsruhe th o. Automatic cold reversible rolling mill 4 hi 650mm agc screw down type. We are a leading distributor of mill rolls to the north american steel mill industry, with significant share of the long bar market. In comparison to a 4high mill stand, the utilization range is wider.
Mill width 1250 mm mill speed 1200 mpm client aarti rolling mills ltd. In the finishing sections of such lines with rolling speeds of up to 100 ms and higher, rolling is carried out. Multiroll cold mill stands are described using different terms depending on their type and manufacturer. 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. Forged steel rolls were also improved for cold rolling to give higher hardness penetration after heat treatment by increasing the content of alloying elements. Feb 10, 2012 crm complex6 high reversible cold rolling mill training manual0 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. They cover a range of products from carbon steels, silicon steels, tinplate, stainless steels, to copper. Rolling oil emulsion management linkedin slideshare. The evaluation includes roll deflection, pressure of rolls in contact, roll exit thickness distribution, and so on. Our experts in electrical, automation, technological, and. 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. Research and development trend of shape control for cold rolling. Nigeria this is the complete video of the 1200 mpm speed 1250 mm wide 6hi cold rolling mill commissioned by yogiji digi in march 2017 at aarti rolling. In india now a days mostly 20 hi and 4 hi rolling mills are installed in bi g steel produ ction units.
Yogiji digi sees itself as an authority in cold rolling. That explains why we design our cold rolling mills to be just as versatile. The 2 hi cold rolling mill is used for making stripsheets and helps in improving the strength and forming higher tolerance. The proceed materials can be offered to produce sheet, strip, can, ps sheet, foil and precision raw material for further processing. The evaluation includes roll deflection, pressure of rolls in contact, roll exit thickness distribution, and so. Cluster type cold rolling mill us4270377a en 19780519. Rev1 recent development of skinpass mill and tension leve. Band is prominently visible after high speed 500 mpm 3. It was producted in 2006,and it is closed down in 2015. In order to analyze the influence of technical parameters on work roll axial force of fourhigh continuous variable crown cvc mill, the deformation analyzing model with top roll system and strip was established based on influence function method. The homogeneous thickness and high surface quality is maintained at 6 hi reversing mill with the help of afc and agc systems.