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Drive mechanism for vertical rolling mills US4124999A (en) * 1977-07-21: 1978-11-14: Koyo Seiko Company Limited: Support assembly for coupling of universal joint GB2028465A (en) * 1978-08-23: 1980-03-05: Sew Eurodrive Gmbh & Co: Centring apparatus for splined drive couplings
Aug 20, 2020· Therefore, the % speed regulation of the motor will be excellent. The Ward Leonard drive is used in steel rolling mills, paper plants, elevators, machine tools. The main advantages of Ward Leonard scheme are: Capable of producing regenerative braking thus delivering electrical energy to the grid. Therefore, the scheme adopts conservation of energy.
Section Rolling Mill. Rolling mills are facilities that carry out a series of processes including rolling the billets, blooms, slab and beam blanks – extracted from the reheating furnace – into the prescribed size and correcting any bending, cutting them into given lengths, .
A universal rolling mill stand with horizontal and vertical rolls, adjustably supported in two parallel roll posts is disclosed. The universal rolling mill stand enables a simple construction and operational process if the horizontal rolls are received, without the help of installation pieces in bearings disposed in the roll posts 3, operator side roll post with the bearings face away from the ...
Gear systems for hot rolling mills For long products, Eisenbeiss offers the full range of gear systems from the entry mill to the finishing mill. Eisenbeiss pinion gears in horizontal or vertical configurations have been designed to operate in extremely tough environments involving mill .
The roughing mill is made up of six independent rolling mill stands, the last four of which incorporate small vertical rolling mills called edgers. Slabs heated in the furnace until they glow bright orange-yellow are rolled through one stand at a time to produce so-called transfer bars suitable for finish rolling. High-pressure water-jet
Apr 13, 2018· We discuss several drive mechanisms for the working stand in periodic cold-rolled pipe mills. This paper focuses on identifying opportunities to increase mill capacity and modernize existing periodic cold-rolled pipe mills. We provide a comparative analysis of a variety of systems for equilibration of the dynamic forces in the working-stand drive mechanism.
corporation production mill. The computer simulation have been used to study chatters and showed the variation of natural frequency with variety of factors viz. friction, rolling speed, tension, reduction and strip width. The stability criterion for rolling mill was derived analytically using the factors causing negative and positive damping [8].
ABB's GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This 'workhorse' for grinding operations combines a robust, service-friendly and fit for purpose design to provide highest throughput, reliability .
The working roll of the rolling mill is driven by a series of drive mechanisms through a motor. The rolling pieces are processed by two opposite rotating rolls under pressure to produce plastic deformation. The 4-hi rolling mill completes this process by working rolls. The work roll includes two kinds of motion: rotating and moving.
Different Properties of 2 Hi Rolling Mill and 4 Hi Rolling Mill . Many friends don't know what a 4 Hi Rolling Mill is. In fact, the 4 hi rolling mill is a combination of two working rolls and two supporting rolls. It is not only the drive mechanism for the backup roll, but also the work roll driven equipment.
A watermill or water mill is a mill that uses hydropower.It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling (grinding), rolling, or hammering.Such processes are needed in the production of many material goods, including flour, lumber, paper, textiles, and many metal products. These watermills may comprise gristmills, sawmills, paper mills ...
1. Vertical Ring Rolling Mill Vertical Ring Rolling Mill, or VRRM for short, being discussed here, was a machine that was developed in Japan some decades ago, and had a ring-forming roll configuration which was different from the one that is seen with the currently-conventional horizontal (radial/axial) type ring rolling mill.
Jun 13, 1978· A drive mechanism for vertical rolling mills, comprising: a drive shaft section comprising an inner shaft and an outer sleeve shaft which are axially slidably fitted together, a universal joint which connects one end of said drive shaft section to the drive side, said universal joint having its fitting yoke fixedly fitted on a drive shaft element,
In a horizontal rolling mill, the rolls of one working stand drive the rolls of the other working stand, which are also driven by a cardan shaft. Commonly used cardan shafts in rolling mills are universal coupling shafts, plum blossom coupling shafts (plum coupling), joint shafts and gear coupling shafts.
The study provides the functional diagram of the developed control system for hydraulic drive of the screw-down mechanisms in the shape-rolling mode. ... horizontal and vertical rolls of universal ...
Collars, couplings, cams, clutches, flywheels, shaft ends, spindles and horizontal or vertical shafting are examples of common hazardous rotating mechanisms. The danger increases when bolts, nicks, abrasions and projecting keys or setscrews are exposed on rotating parts. According to 29 CFR 1910.219 (L), these must be made flush or guarded.
Compared with the ordinary arch-style rolling mill, short stress path rolling mill achieves high precision products by shortening stress loops and improving the rigidity of rolling mill; compact design, small size, lightweight, simplified assembly and reduced a lot of basic work; during the rolling period, the guide and guard device is maintained in the original when the roll ring is replaced.
AC drive up to 14000 A, DC drive up to 30000 A Preet Machines. Wire Rod Block Mills ... Universal Rolling Housing-Less Mill Stands for Section Rolling Mill / Structure Rolling Mill, Horizontal and Vertical Rolling Mill Stands (H/V Type). Wide Range of Gear and Gear Boxes like Pinion Gear Boxes, Reduction Gear Boxes, Reduction cum Pinion Gear ...
The ACS 6000SD drive is a fuse-less drive available for reversing rolling mills. For Mill owners this means higher reliability since the fuses are suffering of thermal ageing, a phenomena where the root cause is the cyclic load of a reversing rolling mill, up to 250 % .
The ZR mill uses ultra-small diameter work rolls to efficiently roll high-hardness materials such as stainless steel, electrical steel strip, and phosphor bronze. To the original high rolling reduction capacity of the mill, we have added the double AS-U (shape control mechanism.
It ultimately combines the mill vertical system structure model, and vertical vibration model of single-stand cold rolling mill is established with coupling those models above. It contributes to the theoretical basis for the study on vibration mechanism analysis and control strategy in the high-speed rolling .
the forward rolling stress in the deformation zone and discussed the vertical vibration mechanism and stability of the cold rolling mills [13]. Nevertheless, the coupling relationship between strip steel vibrations and torsional vibration of main drive system was seldom reported. We .
In this paper, we find the violent vibration of the hot rolling mill is induced by the combination of the screw-down system and the strip, explain how the srew-down-strip combined excitation effects the rolling mill, and introduce an effective method to restrain the vibration. First, two experiments, stripless rolling and turning off the screw-down system, are conducted, the first experiment ...
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