Vibration analysis of a sendzimir cold rolling mill and. Cylindrical roller bearings for multiroll mill backup rolls. Improved shape control performance of a sendzimir mill using wavelet radial basis function network and fuzzy logic actuator jeon hyun park, jong shik kim, and seong ik han proceedings of the institution of mechanical engineers, part c. In this article, the authors investigate the dynamic behaviour of a sendzimir mill. Our innovative staff of engineers and designers have considerable depth of experience in solving some of our customers most perplexing problems. In addition, the sendzimir mill is a reversing mill, with shape. You have clicked a page that seems to be very popular. Congratulations on choosing a durston rolling mill that will give you many years of troublefree.
Pdf shape control systems for sendzimir steel mills researchgate. The roll gap pressure distribution and the acting force between rolls s and o, rolls o and i, rolls o and j, rolls. Highperformance product series for steel productionrolling. This mill configuration is often used for heightstrength and stainless steel. Pdf this paper presents the implemtation of a predictive functional controller for the sendzimir 20high cold rolling mill. The sendzmir mill casey has for sale is a very heavy duty fast sendzimir mill, z mill, cluster mill, and is capable of holding very close tolerances. A sendzimir mill is a mill with small diameter work rolls, each backed up by two rolls of larger diameter which are in turn jointly backed up by a cluster of three rolls. Numerical analysis of strip edge drop for sendzimir mill article in journal of materials processing technology 208.
The improvment after each new selftuning function is seen as jumps in the performance curve above. A static model of a sendzimir mill for use in shape. Materials and the technology of manufacturing rolls for. A numerical simulator developed in the matlabsimulink. As is known, sendzimir coldrolling mills feature several roll arrangements, a typical one of which is the 1234 arrangement illustrated in fig. The subject of this thesis is the static model of the sendzimir cold rolling mill, which is a 1234 type cluster mill.
Extensive experience in the area has led to the perfecting of these hydraulicallyloaded, gaugecontrolled mills for a variety of applications. Keywords sendzimir steel mills, predictive functional control, shape. The other major new facilities coming up at the salem steel plant include electric arc furnace, ladle furnace, aod convertor, slab caster and a new sendzimir mill. Analysis of roll gap pressure in sendzimir mill by fem. The upgrading of the mill was done in steps during about 3 years. A cluster type configuration of 20 rolls enables to use smaller size work rolls, that allow high reduction rolling of. A 20high sendzimir mill is widely used in cold rolling. Sendzimir mill article about sendzimir mill by the free.
A copy of the license is included in the section entitled gnu free documentation license. Numerical analysis of strip edge drop for sendzimir mill. Sendzimir cold rolling mill pdf download absiograv. So the people may desire to oppress some of their number. Improved shape control performance of a sendzimir mill.
Contact casey equipment for a quote on used sendzimir millsz mills for sale. Sejal is in charge of the engineering, delivery and commissioning of sendzimir mills invented by dr. Force model and elastic deformation analysis of 20high. Sendzimir mill, z mill, and cluster mills are one in the same. Robust shape control in a sendzimir coldrolling steel mill.
Figure 2 shows the upper cluster of a typical sendzimir cluster mill. Both static and dynamic models of the mill are required for the control system design. Buy, sell and rebuild secondhand steel mill equipment worldwide. Degtyarev metal science and heat treatment volume 18, pages 563 565 1976cite this article. The cluster mills consist of two working rolls with small diameter and four or more backup roll with larger diameter. Rolling metalworking wikipedia, the free the discovery of the rolling mill in europe maybe attributed to leonardo da vinci in his drawings.
Open type backing roll bearings for sendzimir cold strip mill 10. Developed fourrow tapered roller bearings for hotstrip mill work rolls. Pdf predictive functionnal control of a sendzimir cold rolling mill. The deformation of rolls within the roll system as a whole is analyzed without pinpointing upon each roll and impact on the rolling process. Factbox 1 abb and rolling mills footnote 1 a pass is one deformation step consisting of the.
Developed threerow cylindrical roller bearings with cage for sendzimir mills. The zmill is designed to make heavy reductions at high speeds and used to roll both ferrous and nonferrous metals. Edgedrop control behavior for silicon strip cold rolling. Figure 19 252 element model results for 20high sendzimir cluster mill 59. The shape control problem for a sendzimir 20roll cold rolling steel mill is characterised by operation. They have better gauge accuracy, better shape, and reduced edge drop.
Highperformance product series for steel production. The mechanical model of the work roll, first intermediate roll, second intermediate driven roll, and second intermediate idler roll was proposed and the contact force of each roll was calculated in. The object of shape control is to adjust the mill so that the rolled strip is free from internal stresses. This is brief introduction of cold rolling mill sendzimir mill.
Developed tapered roller bearings for hotstrip mill backup rolls. Surface coating process where the workpiece is dipped into a bath of zinc and aluminum to form a surface. Zmill, sendzimir mill, cluster rolling mill waterbury. The number of back up rolls high as 20 or more depends upon the support heeded for the working roll. A complete dynamic analysis of the cluster mill layout has seldom been proposed in the literature. Developed sealed cylindrical roller bearings for sendzimir mills. Sendzimir 20 high mill and sendzimir zhigh mill bring these advanced technologies to modern manufacturing facilities. Sendzimir mill rolls are generally used for rolling of stainless steel and nonferrous grades worldwide. Those with basic or premium exposure get their logo placed here for 6 months when contributing with impartial facts. Very hard and elastic materials can also be rolled by zmill. Permission is granted to copy, distribute andor modify this document under the terms of the gnu free documentation license, version 1. The annual flood data for clear creek are given below for the years 19481960 in a descending order. 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.
Alibaba manufacturer directory suppliers, manufacturers. A static model of a sendzimir mill for use in shape control. The resulting overall mill dynamics are therefore given by. Free gold maps of the united states and other parts of the world, by county. The bearings which are used for multiroll mill backup rolls are attached to the rolls on. Improved agc control using adaptive technique in cold rolling mill pdf agc control for hi cold rolling mill,high mitsubishi cold rolling mill and an old sendzimir mill the improvements with self adaptive control methods compared to conventional agc control can be judge to at least % more strip within tolerances and 5075% smaller. Specializing in hot and cold rolling mills for producing flat and long products. Rolling mill technology and machine design sendzimir.
At such high speed, it is very necessary that the material of sendzimir mill rolls is clean and free from inclusions and defects. Pdf this paper presents the implemtation of a predictive functional controller for the sendzimir 20high. Materials and the technology of manufacturing rolls for the sendzimir mill. A basic understanding of the mechanics of rolling mill rolls file. The acting force on the roll system of sendzimir mill was analyzed using 3d fem. Introduction that is, the majority, or those who get themselves to be accepted as the majority. Sendzimir mill rolls operate at a speed ranging from 500 mpm to mpm. Pdf deals with the problem of shape or flatness control for.106 461 1079 1403 448 1097 517 58 181 1141 928 1004 455 664 181 469 1165 864 1028 917 541 912 469 1139 69 234 429 564 408 715 319 1011 1046 1027 1412 860 87 1067 897 1165 1120 90 1195 1292 1245