4 hi cold rolling mill pdf file

High speed cold rolling mill backup rolls shapedsteel rolling mill cold rolling mill backup rolls hot rolling mill backup rolls oil seal ys features. Alibaba manufacturer directory suppliers, manufacturers. This condition often occurs in the rolling of steels and hightemperature alloys. Stresses from hertzian pressure in 4high cold mill back up rolls were measured. After the first release of this book, i was hoping for more stimulations and proposals for improvements. Four high rolling mill on sales quality cold rolling mill.

Our technologically developed 4 hi cold rolling mills are used for shaping large pieces of metals such as billets, blooms and slabs. 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. Strengths and benefits of the 6 high cold rolling mill. In section 5, thickness control with roll eccentricity compensation has been proposed. Sms group website plants all plants reversing cold mills steel. A rolling mill may be modelled as a number of inertial masses coupled by. Hardened temper rolling mill four roller for carbon steel high elasticity. Automatic cold reversible rolling mill 4 hi 650mm agc screw down type. In order to prevent whipping of the work rolls, they are supported by means of intermediate.

Characteristics of rolling mills with roll shifting article pdf available in iron and steel technology 6512. You benefit from our 20 high mills because they are packed with stateoftheart mechanics, hydraulics, electrics, and automation. 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. Hot rolling is often characterized by a condition called sticking, in which the hot work surface adheres to the rolls over the contact arc. Cold rolling mill for stainless steel 4 hi mill to use hr coils project report manufacturing process cost investment required. The worlds first 4 high continuous hot strip steel rolling mill, which made it possible for width and gauge ratios to be increased from 250. For mills that use rollers to crush grain or stone, see roller mill. What makes the mill so efficient is that you can set the number of passes and the rolling speeds to suit your program.

This three high rolling mill used to billet rolling, blooming or finish rolling. 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. The 2 hi cold rolling mill is used for making stripsheets and helps in improving the strength and forming higher tolerance. The reversing cold rollin g mill is used mainly for producing coils of normal carbon steel in emerging countries, and is used for producing small lots of variet y coils of high grade steel or special steel in advanced countries. The 4hi mill rolls are fabricated with the high quality raw material. Waterbury farrel 2hi4hi combination mills may be converted by the removal or insertion of work rolls. So, the emphasis of field breakthrough is how to effectively control the complex wave defects of four high cold mill from the point of roll configuration curves. The resonant frequencies approach each other is clearly crucial in hot mill design. 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. Due to government environmental protection and deproductivity action, a lot of good machines are stopped, we can find you second hand rolling mills with good condition and. Consider rolling of a flat plate in a 2 high rolling mill. Rigid 20 high cold rolling mill machinery, high precision stainless steel rolling mill.

New rolling method of reversing cold rolling mill steel plantech. Introduction when sheet is entered between a pair of rolls and any kind of force applied to that sheet, like that generated when making a reduction, the rolls, since they are supported at the roll ends, will bend around the sheet. 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. We have engineered and installed wide range of cold rolling mills, skin pass mills as well as bonding 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. Carbon steel 6 hi cold rolling mill, hydraulic pressure down cold rolling machine. These 4high mill rolls are known for its design, robust construction and high efficiency. The rcm is the allrounder among cold rolling mills. In section 4, architecture and learning algorithm fuzzy neural networkof have been presented.

Carbon steel 6 hi cold rolling mill, hydraulic pressure down. Depending on your product mix, we can provide the rcm in tailored design, as e. Oil seal for steel production equipment offices jp jtekt corporation nagoya head office no. It is used for rolling down metal to a size that is smaller than its original form. The rolls between which the cold rolling actually takes lace is called the work roll. That produce high rate of production more than rate of production more than two high roll methods. The ds system is the ideal contactfree way to remove the rolling emulsion from the strip. In the rolling process, elastic deflections of the mill housing, rolls, bearings. Steel coil aluminum coil copper coil your application we also provide high precision cold rolling mill and hot rolling mill you need better cold rolling mill at good price. In comparison to a 4 high mill stand, the utilization range is wider. Comparison of 4high and 6high millstand technology in cold. You have clicked a page that seems to be very popular.

In section 3, a mathematical model has been driven for singlestand cold rolling mill. Although cort was not the first to use grooved rolls, he was the first to. That rolling mill having four horizontal rolls, which two rolls are. Modern rolling practice can be attributed to the pioneering efforts of henry cort of funtley iron mills, near fareham, england. The diameter of the 6high work rolls amounts to approximately 1. The od of the work rolls is between 208 to 225 mm or 145 to 155 mm. Pires et al 2006 2 has applied nonlinear simplex optimization method for cold rolling mill process parameters which reports good results. Shanghai copper, china has successfully installed millmate. 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. The performance of a conventional 4 high mill is not satisfactory in these requirements.

If you continue browsing the site, you agree to the use of cookies on this website. Of discontinuous cold mills pushpull pickling line and cold reversing mill for indonesia client. There are many cases in which a shearing machine for dividing a strip is installed on the delivery side of the mill, and also a strip press is disposed on the entry. The diameter of the 4 high work rolls amounts to approximately 1. 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. 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. Four high temper mill nonreversible direction left to right manufacturer waterbury farrel usa yom 1978 model serial number 50305 mill motor power 373 kw controls ge siltrol plus cold rolled strip crs coil weight max. Click the checkout button below or continue adding machines to the cart. 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. Characteristics and lineup of ihis nonferrous metal rolling mills. As well as steel mills, ihi also supplies nonferrous metal rolling mills for aluminum and. It has capability to treat wide range of strip widths. Mainly used for rolling low carbon steels, its also a great solution for advanced grades such as silicon steels.

Most steel mills have rolling mill divisions that convert the semi finished casting. Processes are different in nature and in output also. Small 4 high cold rolling mill in operation i2s youtube. Sunrise mill, surabaya, indonesia scope of supply puchpull pickling line, extendable to 600. 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. Main pulpit of tandem cold rolling line, ternium, mexico. The most common configuration is the single reversing mill. Proceedings of the asme 2014 international manufacturing science and engineering conference collocated with the jsme 2014 international conference on materials and processing and the 42nd north american manufacturing research conference. Tcms operate under high load conditions for high strength steels. We have worked on countless projects all over the world. Agc hydraulic 6 hi cold rolling mill 700mm carbon steel 390m min speed. The diameter of the 4high work rolls amounts to approximately 1.

Used 1250 mm 6 hi cold rolling mill 87 views posted on 20170105 09. In metalworking, rolling is a metal forming process in which metal stock is passed through one. Salem steel plant salem 20hi sendzimir mill complete replacement of analog drive controllers by digital drive controllers and mill automation system 2000 6. In india now a days mostly 20 hi and 4 hi rolling mills are installed in bi g steel produ ction units. A new 6high cold rolling mill hereinafter hc mill has been developed in order to solve these shape problems. 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 on a 4 hi reversible mill linkedin slideshare. Lets say you have a sheet of metal originally 18 thick and wish to reduce the thickness to 116. Chapter 4 surface finish and friction in cold metal rolling. With this new design, mills were able to produce 15 times more output per day than with a hammer.

And, if you want to produce small to medium batch sizes, this mill type is a highly efficient option. Various mill designs are offered that include 6 high ucms universal crown control mill, zr mills and 12 high cold rolling mills with smalldiameter work rolls for the efficient rolling of materials of high hardness. This permits great versatility of rolling capability on the same mill. Review on cold rolling mill roll deformation ijoer. Andritz metals portfolio of mill stand types for cold rolling. Thyristor converters for 160 kw pusher drives for preheating furnace. A basic understanding of the mechanics of rolling mill rolls file. Report on best available techniques bat in the german. Rolled steel equipment stainless steel sheets, cold rolled.

Report includes feasibility report, profitability analysis, raw materials, break even points, formulations and formula and much more. Cuttingedge coldrolling mills primetals technologies. 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. We have well equipped manufacturing unit where we manufacture these machines in compliance with industrial standards using modern techniques.

Cold rolling mill sale steel cold rolling mill machines. Twenty rolls reversible sendzimir cold rolling mill payoff max. Multiroll cold mill stands are described using different terms depending on their type and manufacturer. Optimization of cold rolling mill process to improve. Dec 11, 2008 small 4 high cold rolling mill in operation.

Rolling mill pdf stresses from hertzian pressure in 4 high cold mill back up rolls were measured. In 1783, a patent was issued to henry cort for his use of grooved rolls for rolling iron bars. Cold rolling mill facility for steel coil and sheet. Automatic 2 hi cold rolling mills, rs 5000000 unit, vaid. Typical uses for coldrolled steel include metal furniture, desks, filing cabinets, tables. Cambering of four high cold mill with the view of reducing. The homogeneous thickness and high surface quality is maintained at 6 hi reversing mill with the help of afc and agc systems. You benefit from our 20high mills because they are packed with stateoftheart mechanics, hydraulics, electrics, and automation. Multiroll cold rolling mills are used to process high grade steel strip and nonferrous metal strip. Pdf characteristics of rolling mills with roll shifting.