Compared with the four-high mill equipment, the offset eight-high mill equipment has the following characteristics: (1) Unique structure of partial eight-high rolling mill. The unique structure of the partial eight-high mill is that the work roll has a side support system and the installation position is off the center line of the back-up roll ...

ment is the 2-high, but there are complex designs using twenty or more rolls in a single stand. The most common arrangement is the 4-high design and consists of two work …

As shown in Fig. 3, the UCM 6-high cold rolling mill is based on the ordinary 4-high cold rolling mill with the addition of an intermediate roll that can shift laterally between the work roll and the backup roll.Through the hydraulic roll bending system, applying a variable bending force to the end of the work roll or intermediate roll instantaneously changes …

Parameters for low friction coefficient has been studied and total number is calculated where the friction coefficient goes below the range and causes the fracture. 1.2 Work …

A 3D elastic-plastic finite element method (FEM) model of cold strip rolling for 6-high continuous variable. crown (CVC) control rolling mill was developed. This model considers the boundary conditions such as. accurate CVC curves, total rolling forces, total bending forces and roll shifting values. The rolling force.

The high-speed steel roll material used in this investigation has the following composition: C 1.96 wt%, Cr 4.85 wt%, Mo 4.47 wt%, W 3.4 wt%, V 4.00 wt%, Mn 1.26 …

The performance of a conventional 4-High mill is not satisfactory in these requirements. A new 6-High cold rolling mill (hereinafter HC-MILL) has been developed in order to solve these shape problems. The HC-MILL for steel rolling was put into a practical operation at Nippon Steel Corporation at Yahata Works (now, Nippon Steel & Sumitomo …

STEEL SLABS. Sheet hot rolling mills begin with a continuously cast steel slab. Slab Dimensions. Thickness. Width. Length 8" through to 10" 33" through to 60" 354" maximum (1000 PIW @ 10" thick) Slabs must be free of surface defects. Slabs must be properly …

The typical configuration of a four high rolling mill comprises four rolls: two work rolls (WRs) in contact with the strip to deform it and two backup rolls (BURs) …

The diameter of roll barrel is 350 1800mm. The material of back-up roll includes 60CrMo 9Cr2Mo 86CrMoV7 70Cr3Mo 5Cr5NiMoV etc. Get Price; 4 Hi Mill Workroll Material CompositionThe versatile Waterbury Farrel 4-Hi Mill can be deployed as both a non-reversing mill for intermediate rolling and as a reversing mill for finish rolling.

In this paper, the stress analysis of roll chock made of gray cast iron, CA6NM, CF8, EN8, and Fe-410 materials has been used for FEA analysis using a FEA software, and from the results, it has been concluded that the chock made of CA6NM material produced 50.01% lesser deformation and 2.96% less equivalent stresses than …

4 hi mill workroll material composition. 4 hi mill workroll material composition An important feature of HiCrS is that the mill is not required to adjust special water cooling conditions In the rolling process these rolls can form oxide film to improve surface quality of the rolled material These rolls are suitable for both Hi roughing and front stand of 4 Hi …

Generally, semi-steel, high-chromium steel, high-speed steel are chosen. The work rolls rolling mill roll before finishing rolling mill (F1-4): The work rolls in the front …

A core product of Union Electric Åkers Thousands of Hot Strip Mill Work Rolls come off of our production lines each year, making Union Electric Åkers one of the world's largest roll manufacturers of Hot Strip Mill Work Rolls. All our Hot Strip Mill Work Rolls are made using the vertical centrifugal casting method, ensuring high in-service integrity and …

Specifications of the laboratory mill. 1 Jd Roll dimension (mm) Backuproll Workroll c400X350l ip80 X350l Distance between cylinders (mm) Backuproll Workroll 560 680, Maximumroll separating force (tf) l20 2. Simulation Model 2. 1. Outline of the Model Thespeciflcations of a 4-Hi mill of laboratory scale used in this study are shown in Table …

Finishing Mill terdiri dari 6 pasang Roll Stand yang masing masing terdiri 4 roll; 2 workroll dan 2 backroll; workroll bekerja melakukan reduksi pada baja lembaran dan backup roll bekerja mendukung workroll untuk memberikan tenaga (force).

The characteristics of various materials for rolls and roll load have been shown in Table 1 and 2. Table 1 The structural properties of mild steel material Table 2 Roll load with material Forces acting 4 High Mill and forces acting on 4 High Mill with intermediate roll are shown in figure 4 and 5 respectively.

In order to study the hot Compact Strip Production (CSP), four-high mill vibration characteristics, and vibration suppression method, the roller system structure stability was analyzed and calculated at first in the paper. And then, the mill stand gap was measured at field and its influence on roll transverse vibration was analyzed. The drum …

4-high Cold Rolling Mills. DANIELI FRÖHLING's 4-High Mills are used throughout the Ferrous and Non-Ferrous Metals Industries. They are in operation for heavy gauge breakdown rolling, intermediate and thin strip finish rolling, as well as for cladding and temper rolling. Single stand Reversing Mills are the most flexible type of application ...

continuously variable crown (CVC) mill, 4-high SmartCrown mill, 4-high edge drop and crown compact (ECC) mill, 6-high HC mill, have been developed and applied to the production of cold-rolled strip. Currently, the 6-high reversing cold rolling mill is widely used because of its less investment but effective and powerful ability to control shape ...

Web11012020 4 hi mill workroll material composition saluteindia Dec 10, 2015 Rolling mill Rolls and Roll Shop Rolls are the main and very costly consumables in a rolling mill They are used to roll steel in the rolling mill and their performance depend on many factors which include the materials used and the loads to which they are subjected to ...

Introduction. Four-high mills are mainly used for rolling foils, sheets and plates and account for a large percentage of all mills. The speed of contemporary four-high mills has reached 1800–2200. m/min to meet demands for rolling of foils and sheets.. However, frequent burning of end-thrust bearings in the work-roll assembly can disrupt …

A special feature of Sundwig S6-high rolling mills are the side-supported work rolls. The patented Sundwig S6-high side support stabilizes the work rolls in this type of mill stand using mechanical, hydraulic lateral support equipment, thus preventing lateral excursion of these rolls. The diameter of the S6-high work rolls is only approximately ...

roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely …

Q. Zhu, "A study of oxidation and wear on high speed steel roll material", Thesis University of Wollongong, 2012 5 H-H. Kim & al. "Oxidation Behaviour of High Speed Steels in Dry and Wet ...

It is to some extent self-lubricating due to the free graphite which is an advantage where thrust collars arc used to resist end thrust during rolling. A typical analysis of the roll material is carbon – 2.5 % to 3 %, silicon – 0.5 % to 1 %, manganese – 0.4 % to 0.8 %, phosphorus – 0.5 % max, and sulphur – 0.1 % max.

The problem of failure of Rolling mill housing was there in industry, which can be efficiently solved by using CAE. The present work involves the design optimization of work roll chock and backup Roll chock in cold rolling mill, to control the failure of choke in the cold rolling mill for retain the material cost and longer life of the roll chock.

This study addresses high-fidelity work-roll diameter deviation transfer in the cold rolling of stainless steel, aluminum, and copper. Parametric studies are performed on a 4-high mill to examine the influences of roll diameter, reduction, strip width, and material on the transfer of high-fidelity work roll diameter deviations.

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The desired hardness is achieved by changing the carbide to graphite balance with the help of the chemical composition. The presence of flake graphite makes the material resistant to fire cracking, spalling/chip-off …