Sliding bifurcation of a horizontal–torsional coupled main drive system of rolling mill along with the change of mixed friction coefficient under the conditions of autonomy and non autonomy is studied in this paper Considering the friction between the roller and the strip the torsional vibration of gear pair and the horizontal vibration of the roller the dynamical equation of a horizontal
Chat Online
ment method for various guide modes of vertical ring rolling mill YP Ding et al 7 studied the effect of rolling speed on the mechanical properties and quality of strip Y Kimura and N Fujita8 studied the effect of lubrica tion on the tandem cold rolling mill And a method is proposed to reduce the vibration of rolling mill by con
Chat Online
This paper studies the torsional vibration suppression control problem for the nonlinear rolling mill main drive system with performance constraint requirements and unknown measurement sensitivities Firstly considering the nonlinear friction between the roll gaps a torsional vibration model of the main drive system of rolling mill is established
Chat Online
Mill Drive kW Output Torque Gearbox kNm 0 100 200 300 400 500 600 700 Mill Capacity t/h Mill Drive Power Output Torque Gearbox Mill Capacity Fig 1 Development of mill sizes 1 1 Function of the main gearbox in a vertical roller mill The main gearbox of a vertical roller mill has to perform two major tasks see also Fig 2 1
Chat Online
A hot rolling production line generally consists of several main stands beginning from the heating furnace roughing mill finishing mill laminar cooling to down coil as shown in Figure 1 The heating furnace is usually located at the drive side DS of the production line The drive side is
Chat Online
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
Chat Online
Free Chance Rolling Thanks to the original mill drive configuration 1st stand is individually driven by one motor and 2nd to 4th stands are driven by separate motor various size of rolled materials can be produced from the same roll family of the upper stream mill stands by variable rolling
Chat Online
Vertical rolls are ordinarily not driven on a universal rolling mill Therefore when trying to apply strong pressure to the flange thickness to make H shaped steel etc if the material comes into contact with the vertical roll first it increases the possibility of faulty roll bites
Chat Online
This paper studies the torsional vibration suppression control problem for the nonlinear rolling mill main drive system with performance constraint requirements and unknown measurement sensitivities Firstly considering the nonlinear friction between the roll gaps a torsional vibration model of the main drive system of rolling mill is established
Chat Online
Vertical Rolling Mill Drive In Indonesia Bnm stainless steel pt bina niaga multiusaha 614 followers on linkedin stainless steel cold rolling mill bnm stainless steel is a precision cold rolled stainless steel mill
Chat Online
The three high rolling mill consists of a three high stand with three rollers placed in a single vertical plane The upper and bottom roller rotate in the same direction whereas the middle roller rotates in the opposite direction It is used for rolling of two continuous passes in a rolling sequence without reversing the drive
Chat Online
Vertical mills such as bowl roller grinding ball and ring and roller mills are mainly used for comminuting limestone clinker slag lime gypsum and ores for the building industry and coal in the coal preparation They reduce raw material from a thickness of 30 mm to a very fine grained material The pulverizing of mineral raw materials
Chat Online
The order also includes the integration of the new drive system into the existing basic automation of the medium strip mill The project is scheduled for completion in December 2021 A working group from thyssenkrupp Hohenlimburg and Primetals Technologies comprising hot rolling experts rolling technologists and drive specialists compared
Chat Online
A hot rolling production line generally consists of several main stands beginning from the heating furnace roughing mill finishing mill laminar cooling to down coil as shown in Figure 1 The heating furnace is usually located at the drive side DS of the production line The drive side is
Chat Online
This is of the up drive type consisting of a roll stand mill spindles a vertical gear reducer with pinion stand and a motor The gear reducer and motor are installed on a concrete frame so that they are protected from roll cooling water and mill scale Lifting device is installed under the roll stand to adjust the caliber position to pass level
Chat Online
Optional retrofitting capability of cycloconverter drive control enables plate mill to be operated with DC motor in the event of an emergency SIJ Acroni d o o has engaged Primetals Technologies to replace the existing cycloconverter drive control for the upper and lower motors on the plate mill s roughing stand at the Jesenice production site
Chat Online
The MPS mill also grinds dries calcines and classifies gypsum without any problem all in a single machine for any fineness requested and considering individual requirements The MPS vertical roller millbuilt to last reliable and energy efficientis the optimum
Chat Online
The advantages of the vertical roller mill include a high level of grinding efficiency combined with reduced energy consumption For raw materials and cement clinker the vertical roller mill is an excellent grinding solution because of the relatively lower cost
Chat Online
This apparatus is composed of a vertical rolling mill with the rolls 31 and two pairs of horizontal drive free rolls 33 and 34 disposed on the entry and delivery sides of the vertical rolling mill respectively These drive free rolls 33 and 34 can put some rolling load on the billet 10 owing to the propulsive force of the vertical rolling mill though the drive free rolls are defined as rolls which are not electrically driven
Chat Online
Torsional vibration of drive shafts rolls and vertical vibration of rolling mill housings due to impact rolling loads should be considered because they can shorten the lives of rolling mill components Moreover these dynamic loads can affect the quality and physical properties of the strip This thesis contains the simulation of different vibration modes in a hot Roughing mill which consists
Chat Online
Gearbox for Leveler SV 3796 130kw Gearbox for screwing up down a acrew shaft of a Section Mill BD Mill ZM10043A 600kw Gearbox for vertical mill drive of wire rod rolling rough stands HSF 750 90kw Gearbox for driving pallets of a sinter plant QHH042S 630kw
Chat Online
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 Fig
Chat Online
Sliding bifurcation of a horizontal–torsional coupled main drive system of rolling mill along with the change of mixed friction coefficient under the conditions of autonomy and non autonomy is studied in this paper Considering the friction between the roller and the strip the torsional vibration of gear pair and the horizontal vibration of the roller the dynamical equation of a horizontal
Chat Online
Vertical mills such as bowl roller grinding ball and ring and roller mills are mainly used for comminuting limestone clinker slag lime gypsum and ores for the building industry and coal in the coal preparation They reduce raw material from a thickness of 30 mm to a very fine grained material
Chat Online
Characteristics of Rolling in a Continuous Billet Mill with Drive free Vertical Rolls Hiroshi Shikano 1 Yoshiaki Kusaba 1 Chihiro Hayashi 1 1 Research and Development Division Sumitomo Metal Industries Ltd Released 2007/05/31 received 1990/10/15 accepted 1991/02/22
Chat Online
Welcome to Radicon Drive Systems Inc Radicon is one of the world s leading manufacturers of gearing and drive technology With over 60 years of experience Radicon is a market leader in the design and manufacture of geared motors industrial reducers screw jacks and couplings
Chat Online
Vertical edgers are rolling mill stands and are either attached to a horizontal stand or they are free standing Both work the edges during the rolling process that is a vertical edger for rolling slabs rolls works the side of the slab Contact Casey Equipment for a quote on used vertical edgers
Chat Online
Characteristics of Rolling in a Continuous Billet Mill with Drive free Vertical Rolls Hiroshi Shikano 1 Yoshiaki Kusaba 1 Chihiro Hayashi 1 1 Research and Development Division Sumitomo Metal Industries Ltd Released 2007/05/31 received 1990/10/15 accepted 1991/02/22
Chat Online
Roughing Intermediate Rolling Mill Area Equipment Short Stress Mill Rough Middle Rolling Mill Pre Finishing Mill Area Equipment Pre Finishing Mill Transmission Box Vertical Loop 320 Cantilever Mill Finishing Rolling Mill Area Equipment Finishing Mill Group Speed Increasing Gear Box Module Block Mill RSM Module Mill Pinch Rolls
Chat Online
Optional retrofitting capability of cycloconverter drive control enables plate mill to be operated with DC motor in the event of an emergency SIJ Acroni d o o has engaged Primetals Technologies to replace the existing cycloconverter drive control for the upper and lower motors on the plate mill s roughing stand at the Jesenice production site
Chat Online
The MPS mill also grinds dries calcines and classifies gypsum without any problem all in a single machine for any fineness requested and considering individual requirements The MPS vertical roller millbuilt to last reliable and energy efficientis the optimum solution when it comes to performing several process steps in one unit
Chat Online
This allows the horizontal mill to remove material along the length of a workpiece or even functioning as a planer finishing the entire surface When coupled with a rotary table the horizontal mill is nearly as versatile as a vertical mill Compared to vertical milling machines horizontal mills are capable of performing heavier and deeper cuts
Chat Online
EFCFlexible Coupling EFC 01 to EFC 17 70 to 27060 Nm 0 007 to 2 835 kW per RPM FCFlexible Coupling FC 630 to FC 1600 32000 to 430000 N m 3 35 to 44 77 kW as per RPM FBCFlexible Brake Drum Coupling
Chat Online
Drive trains of vertical roller mills are usually equipped with heavy duty gearboxes with a horizontal input shaft and a vertical output shaft Increasing mill sizes bring the existing gearbox concepts to their limits however This and the demand for higher reliability and lower costs has forced gearbox manufactures to develop new gearbox concepts In this article an innovative new gearbox concept that meets all the demands of the latest mill
Chat Online
Rolling bearings in the world s largest vertical roller mill MVR 6700 C 6 The largest vertical mill in the world producing in Barroso Brazil 000A86E4 Gebr Pfeiffer is one of the technology leaders in the field of cement grinding and hard milling Vertical roller mills are used to grind cement raw material cement clinker blast furnace
Chat Online
Vertical roller mill has become the first choice for the cement industry raw material grinding it is estimated there are more than 600 sets of production Large vertical mill capacity has reached 600t h the transmission power of 5000KW In the early 1990s cement grinding mill stand areas has progressed there are many large mill production
Chat Online
Rolling mill equipment components assemblies include hot leveler cassette assemblies uncoilers roller tables entry shears feed roll assemblies pinch roll assemblies and cooling beds for hot strip rolling mills skin pass mills and tandem mills
Chat Online