What are the machines necessary for a stainless steel cold. Triplerow support roller in a multiroll cold rolling stand. The mill also has sendzimir flexible shaft backing assemblies fsba with narrow saddle pitch, and also segmented idler roll sir to maximize mill profile adjustability. It allows the application of a higher roll pressure without bending the work rolls, which would result in poor metal quality. In thinslab continuouscast rolling mills the strip rolled thickness is below 1 mm and the strip caster aims to cast between 2 and 1 mm. Find used or surplus rolling mills, sendzimir, waterburyfarrel, skoda directory of 70000 listings by 1200 suppliers. Zmill, sendzimir mill, cluster rolling mill waterbury. Find sendzimir, dms, and demag for sale on machinio. Several more shapemeters are on order, and most will be in operation by the end of this year.
Find sendzimir, demag, hitachi, mino, continental, loewy, and nash for sale on machinio. Hot rolling is a metalworking process that occurs above the recrystallization temperature of the material. They usually start with strip previously cold rolled on a mill of the first group and 1 meter or less in. In section 3, a mathematical model has been driven for singlestand cold rolling mill. Steel rolling technology handbook 2nd revised edition author. Pdf edgedrop control behavior for silicon strip cold rolling with. Our precision cold rolling mills have name brand recognition worldwide for gauge accuracy, flatness of strip shape, and ultrathin gauge. The sendzimir manual is based on the reallife experiences of our top mill technicians. In the past it used to take weeks to produce coiled strip from iron ore.
Shape control in sendzimir mills using both crown and intermediate roll actuators. We would like to introduce ourselves as one of the leading manufacturers and exporter of wide range of forged hardened steel. The quality of fag and ina backup rollers is ensured by means of high precision machining and sophisticated measurement methods. Buy, sell and rebuild secondhand steel mill equipment worldwide. Strip thickness control of cold rolling mill with roll. Cold rolling mill rolls, rolls for cold rolling mills. Steel rolling technology handbook 2nd revised edition. Three stage age for tandem cold mill feedforward agc for tandem cold mill flowstress feedforward agc noninteractive agc. Our precision cold rolling mills have name brand recognition worldwide for gauge. Combining with boundary conditions, the state vectors in both ends can be solved. Combining the finite element model and the analysis of the. With the processline zhigh mill, whether in single or multiple stands, no upstream equipment is required other than superficial surface cleaning brushes and like equipment. Rolling mills, sendzimir national machinery exchange. Sendzimir, 1985 introduction at the beginning of 1985, the steel and nonferrous industries found themselves in a bind they were faced with low consumption, shrinking markets, higher costs, increased quality demands, and lower prices.
Sendzimir rolling mill technology and machine design over 60 years of experience in hot and cold rolling mills for carbon, stainless steel, and nonferrous rolling mills. Article pdf available in metals open access metallurgy journal. This allows the application of a higher roll pressure without bending the work rolls, which would result in poor metal quality. First delivery of drive shafts for coldstrip mills.
Moreover, cold rolling is the key process for the thin strip edgedrop control, and a sendzimir mill is one of the most popular cold rolling mills for silicon strips. Sendzimir zhigh mills were developed to combine the advantages of the. Advances in cold rolling technology sendzimir zhigh cold rolling mills in the 1980s michael g. The 20 high rolling mill from andritz sundwig is mainly used for cold rolling of metal strip to thinnest final gages and wide range of strip width. In section 4, architecture and learning algorithm fuzzy neural networkof have been presented. Pdf edgedrop control behavior for silicon strip cold. The starting material is usually large pieces of metal, like semifinished casting products, such as slabs, blooms, and billets. The videohistory documents the story of a new approach to the rolling process of steel technology transfer and consumer demand for a new product. We provide the infrared spot m210 thermometer, suitable for a wide temperature range, for this application. Here, each gauge was zeroed by manual adjustment of a variable.
Cold rolling mill rolls our cold rolling mills rolls are widely used in cold rolling mills engaed in metal processing and for deforming various metals by passing them through rollers cold rolling mill rolls at a temperature below its recrystallization temperature. Those are widely used in myriad industries across the globe. Pdf a 20hi cluster mill is simply a precision mill used to roll ultrathin andor. The selfadaptive control functions have also been implemented in a new mitsubishi 12high cold rolling mill at avestasheffield, described in section 2. The mill on which the research has been carried out is a sendzimir rolling mill zr23b19 situated at. Cold rolling of stainless steels and application to the actual mill fumio fudanoki jun araki shuichi inoue kazuhiro yanai abstract the model the rolling oil transudation model by whom the decrease of the surface defect and smoothing the surface of the stainless steel cold rolling was formed were constructed by applying channel jacking. The special feature in a 20 high mill is the relation between work roll diameter and barrel length. Sendzimir planetary mills single planetary mills the kruppplatzer planetary mill. The z mill uses cascaded supporting rolls instead of using a single pair of rolls to apply force on the small work rolls in the center.
Pdf shape control in sendzimir mills using both crown. Robust shape control in a sendzimir coldrolling steel mill. In india now a days mostly 20 hi and 4 hi rolling mills are installed in bi g steel produ ction units. Most steel mills have rolling mill divisions that convert the semifinished casting. Product quality and low scrap rates are supported during this highpressure rolling process by accurate noncontact temperature measurements. In the conventional hot strip mills the minimum strip thickness rolled was 1,5 2 mm.
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. Highperformance product series for steel production. Home 49 sendzimir cold reversing mill zr 22 49 sendzimir cold reversing mill zr 22 rolling mills cluster rolling mill description model zr 22 max coil width. In close partnership with the customer, we therefore continually design, test and develop to productionready status new bearings optimally suited to this application. Thus very hard and elastic materials can be rolled. Extensive experience in the area has led to the perfecting of these hydraulicallyloaded, gaugecontrolled mills for a variety of applications. Effects of rolling parameters on the shape of cold rolled strip. Figure 2 shows the upper cluster of a typical sendzimir cluster mill. Find sendzimir, demag, hitachi, bliss, mino, continental, davy mckee, loewy, nash, and spidem for sale on machinio. Not only is the thickness of the material made uniform, but the internal structure is made homogeneous at a microscopic level, and the surface of the roll is transferred to the material to provide a polished finish. A zmill or sendzimir mill is a machine for rolling steel. Numerical analysis of strip edge drop for sendzimir mill.
Developed sealed cylindrical roller bearings for sendzimir mills. After the grains deform during processing, they recrystallize, which maintains an equiaxed microstructure and prevents the metal from work hardening. Highperformance product series for steel productionrolling. Sendzimir mill z mill cold rolling steel ametek land. Figure 19 252 element model results for 20high sendzimir cluster mill. Sendzimir 20 high mill and sendzimir zhigh mill bring these advanced technologies to modern manufacturing facilities. The shape control problem for a sendzimir 20roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness. Machinery international corp, north branford, ct 2034840400. In metalworking, rolling is a metal forming process in which metal stock is passed through one.
Zmill 20hi cluster type mill the waterbury farrel sendzimir rolling mill is the final answer to the need for highly precise, closetolerance rolled products. Open type backing roll bearings for sendzimir cold strip mill 10. Rolling mill technology and machine design sendzimir. Cold rolling in the cold rolling process, a hotrolled coil is made thinner by passing it between two rolls at room temperature. However, for years, it has been effectively utilized in order to increase bot. Sendzimirs zhigh mill is the only design capable of reducing incoming stainless steel hot band to coldroll gauges in a single pass in a process line. Specializing in hot and cold rolling mills for producing flat and long products. The second group of stainless mills could be classified as true strip mills. Hot rolling cold rolling steel making tandem sendzimir mills continuous annealingpickling line sendzimir mill ultrathin strip precision rolling mill finishing mill steckel mill roughing mill bright annealing line cold rolled stainless steel strip hotrolled stainless steel strip ultrathin stainless steel strip vod continuous casting machine. For a quote or more information on the items shown, check the box at the start of the line and fill in your contact information at the bottom of the screen. Zhengzhou hengzhong heavy machinery manufacturing co. Mill operators will benefit from reading this manual.
Predictive functionnal control of a sendzimir cold rolling. This sendzimir mill zr 1925 12hi rolling mill for stainless steel is now in storage. Edgedrop control behavior for silicon strip cold rolling. A cluster type configuration of 20 rolls enables to use smaller size work rolls, that allow high reduction rolling of hard metals and the production of.