4 hi cold rolling mill pdf free

Hi rolling mill, jindal steel hisar is having 20 hi and 4 hi rolling mills, whereas. Cold rolling mill we fabricate a wide range of cold rolling mill machinery with the aid of advanced technology. Principles of rolling mill pdf felona mining machine. Crm complex6 high reversible cold rolling mill training manual0 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

A basic understanding of the mechanics of rolling mill rolls file. Rigid 20 high cold rolling mill machinery, high precision stainless steel rolling mill. 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. Cold rolling mill machinery,cold rolling mill machinery. These 4high mill rolls are known for its design, robust construction and high efficiency. Hardened temper rolling mill four roller for carbon steel high elasticity. Automatic cold reversible rolling mill 4 hi 650mm agc screw down type.

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. Mc054 demag 4 hi cold rolling mill steelworks equipment. Currently, work roll shifting mill is the most effective mill for strip shape control 12, because it improves the strip crown accuracy and edge phenomenon, as well as permitting schedule free. Rolling mill fundamentals pdf wordpress rolling mill fundamentals pdf forces and geometry relationships in rolling simplified analysis of rolling es from hertzian pressure in 4high cold mill. Pdf failures of rolls occur due to improper manufacturing and operational parameters. Pdf life of rolls in a cold rolling mill in a steel plantoperation. The strip shape standard curve in a tandem cold rolling mill was. 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. Please make sure to add your billing information before the 30day trial expires or you will be downgraded to the free package. We have manufactured more than 200 such rolling mills ranging from 50 mm width to 2000 mm width running successfully all over india and abroad. The 2hi cold rolling mill are used for rolling of sheets, plates and coils of softer metals like aluminum, copper, brass, lead etc. The 4 hi cold rolling mill, one of metal coil cold rolling mill, is made from good quality raw material. Rolling mill article about rolling mill by the free dictionary.

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. Cuttingedge coldrolling mills primetals technologies. This condition often occurs in the rolling of steels and hightemperature alloys. A fourhigh cold rolling mill has four rolls, two small and two large. 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. The 4hi mill rolls are fabricated with the high quality raw material. Cold rolling on a 4 hi reversible mill linkedin slideshare. Email addresses and phone numbers will not be passed on to any other organisation.

Cold rolling mill on sales quality cold rolling mill supplier. In comparison to a 4 high mill stand, the utilization range is wider. Jul 14, 2014 video of a 4hi cold rolling mill with automatic gauge control, commissioned by mnc. For mills that use rollers to crush grain or stone, see roller mill. Failure analysis of work rolls of a thin hot strip mill. 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. You have clicked a page that seems to be very popular. Siemens vai has modelled the rolling process in order to be able to compare the critical rolling parameters and results of 4 high and 6high mill stands in cold rolling tandem mills. This machine provides accurate size and output desired by clients and advanced methods of production which directly reflect in higher productivity and reduce the operational cost significantly.

Review on cold rolling mill roll deformation ijoer. The former is realized by the main drive of the rolling mill and the latter is used to adjust the reduction and control the deformation degree of the rolling piece, which is realized by the rolling mill screwdown device. 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. Chapter 1 presents an overview of the rolling process for unfamiliar readers, with a. That produce high rate of production more than rate of production more than two high roll methods. Smartcrown work roll contour of a 4hi tandem cold rolling. In pass two and three the tapered rolls were switched to manual handling and trials. The performance of a conventional 4 high mill is not satisfactory in these requirements. Strip thickness control of cold rolling mill with roll. Comparison of 4high and 6high millstand technology in cold.

Pdf characteristics of rolling mills with roll shifting. In section 4, architecture and learning algorithm fuzzy neural networkof have been presented. 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. This three high rolling mill used to billet rolling, blooming or finish rolling. The 2 hi cold rolling mill is used for making stripsheets and helps in improving the strength and forming higher tolerance. The six high cold rolling mills is more suitable for carbon steel, stainless steel and special steel coil rolling. The diameter of the 4 high work rolls amounts to approximately 1.

For all the good times in cemef, i say hi to my friends, analaura, carole, ghazza. Other production line pickling line degreasing line temper mill tension leveler temper mill and tension leveler unit slitting unit acid regeneration production. The rolling is done in several passes for traditional several stands and reduction that take place successive roll. Apr 28, 2015 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. 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.

Request pdf smartcrown work roll contour of a 4 hi tandem cold rolling mill the new smartcrown profile and flatness control technology was first adopted in a wide strip tandem cold rolling mill. Also included in our range is our twinstand compact cold mill ccm for capacities of up to 900,000 tpy, depending on your product mix. Aug 23, 2017 sms group cold rolling pickling line tandem cold mill of jsw steel ltd duration. Principles and applications of metal rolling semantic scholar.

The diameter of the 6high work rolls amounts to approximately 1. Automatic 2 hi cold rolling mills, rs 5000000 unit vaid. Pdf there are various reasons by which the damage in the cold. The demand for cold rolled steel continues to grow, and at the same time the requirements for product quality, mill productivity. Multiroll cold mill stands are described using different terms depending on their type and manufacturer. Sms group cold rolling pickling line tandem cold mill of jsw steel ltd duration. Multiroll cold rolling mills are used to process high grade steel strip and nonferrous metal strip. All photos and drawings mentioned are at the back of this book. It is a modern rolling mills and the rolling is done by one pass. We have well equipped manufacturing unit where we manufacture these machines in compliance with industrial standards using modern techniques. In section 5, thickness control with roll eccentricity compensation has been proposed. The 4hi rolling mill completes this process by working rolls. Flatness, actuators, cvc, cluster mill, cold rolling, strip. In section 3, a mathematical model has been driven for singlestand cold rolling mill.

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. Stresses from hertzian pressure in 4high cold mill back up rolls were measured. Effects of rolling parameters on the shape of cold rolled strip. Different types of flatness defects encountered during cold rolling. In order to prevent whipping of the work rolls, they are supported by means of intermediate. Hot rolling is often characterized by a condition called sticking, in which the hot work surface adheres to the rolls over the contact arc. 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. 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. That rolling mill having four horizontal rolls, which two rolls are small diameter and another two rolls are larger.

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 hot rolling mills, premature failure of rolls is a major concern as it adversely affects the mill operation as well as production. Online chat metal forming process pdfrolling forging extrusion. Highcarbon steel, stainless steel, copper alloys, etc. Here, each gauge was zeroed by manual adjustment of a variable.

Agc hydraulic 6 hi cold rolling mill 700mm carbon steel 390m min speed. It is used for rolling down metal to a size that is smaller than its original form. Modern rolling mills, and specially cold tandem mills with high productivity, are equipped with a number of transducers participating in automatic control systems. Partial 8 hi cold rolling mill 6 hi cold rolling mill 20 hi cold rolling mill 4 hi cold rolling mill tandem cold rolling mill cold rolling mill for alloy steel asynchronous rolling mill. This condition often occurs in the rolling of steels and high temperature alloys. Research and development trend of shape control for cold rolling. Design and function of cvc rolls as a flatness actuator in a cold. If you continue browsing the site, you agree to the use of cookies on this website. These rolling mills, extensively used in different industrial units, are preferred for their better functional life and high tensile strength.