The roll stand includes a roll package 12 located on the mill pass line p within a frame having four corner posts 14 which protrude vertically from a base 16 and are interconnected at their upper ends by a head structure 18.The head structure has a bottom 18a, side 18b and a top 18c defining an interior chamber 20.
Roll contour optimization for cold temper mill jiang zhenglian cold rolling plant of baosteel branch, shanghai 200941, china abstract a study on the performance of strip shape control has been carried out for a 2000 mm single stand cold temper mill.
If the cvc work roll on the f7 stand of baosteel 2050 mm hot strip rolling mill is substituted by flat roll for schedule-free rolling, sfr and the strip profile is controlled by the existing bending force, the control will be inadequate.This fact has been testified through on.
Re-manufacturing manufacturers, factory, suppliers from china, our company is working through the procedure principle of rolling mill housing frame is also called rolling mill stand, which is used to install the roller, roller bearing, roller adjustment device, guide.
Roll stand, but is guided on the roll neck by the axial bearing.Since the guidance forces are not very high, a deep groove ball bearing is fitted here.This only increases the width of the bearing arrangement to a small degree.It is advisable to use a deep groove ball bearing with the same section height as the radial bearing.
Each work roll is supported by a backup roll of a large diameter 2, 14.In order to achieve good tension control, tensiometer is the reliable instrument to measure the tension between stands.Figure 1 shows the conventional tension control by speed where subscript represents the mill stand number for th stand.
A twin stand mill with a rougher stand before the steckel mill is suitable for an output of 800,000 tonnes a year.Mill types 4-high work roll shift mill 4-high pair cross mill pc mill with on-line roll profiler and dynamic pc option for dynamic automatic profile and flatness control apfc.
Hot rolling mill hgc thickness control improvement 98 another way to determine the thermal expansion of the work roll is the modelling of the heat transfer between the work rolls and the strip.
Application the fundamental knowledge from a basic understanding of roll design, function, and construction can help when purchasing a new roll, evaluating a new product or process, and troubleshooting.A chill roll primarily acts as a heat transfer and finishing device in the extrusion of flat sheet and cast film and in coating operations.
The twin shaft hydraulic mill roll stand rl 50 offered by us are outfitted with hydraulic lifting arrangement, twin shafts, limit switches and web tension control.These basic reels clamping function is accomplished through the adjustable cone sand the reel lifting is perform by hydraulic arrangement.Further, the web tension is control by manual brake set, which make the operation of these.
Dinghao is hydraulic mill roll stand manufacturer in china.The paper mill roll stand is able to achieve lifting, tightly clamping, loosening and aligning of corrugated medium.It can be installed with two rolls of corrugated medium simultaneously.In this way, paper can.
Rolling stand configurations for the most common types of hot and cold reduction mills are depicted in figure 2a.These stand configurations are representative of mills widely employed for large-scale production of hot rolled and cold rolled carbon steel and aluminum sheet.Specialty mills, used to cold roll higher strength andor thinner gauge.
What is claimed is 1.A clamp for releasably securing a rolling mill roll stand on a support structure, said clamp comprising a tubular housing adapted to be secured to said support structure, said housing having a cylindrical interior extending along a central axis between a closed rear end and an open front end a piston subdividing the interior of said housing into front and rear chambers.
Patents for b21b 31 - rolling stand structures mounting, adjusting, or interchanging rolls, roll mountings, or stand frames 6,388 072010 07212010.
Roll necks due to irregularities in the mill rolls andor roll bearings 11.These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand.Depicts the effects of eccentricity on the output strip thickness 6.When the entry strip is passed through the roll stand with 4.
2 there are roll blanks, rough rolls, finishing rolls, according to the position of the rolls in the rolling mill series 3 according to the roll function, there are broken scale rolls, perforated rolls, leveling rolls, etc.4 roll rolls are divided into steel rolls, cast iron rolls, hard alloy rolls, ceramic rolls, etc.
Roll cooling can have many functions.The main function is maintaining a good working temperature range for the rolls to avoid overheating and as a result the development of roll surface defects, which immediately can be found on the rolling product.A proper roll cooling is hence essential for a long roll life time, extending for.
Stand f0 upstream of the three existing stands f1-f3.Photo 1 shows the appearance of the finishing mill and table 1 shows main specifications.The newly installed f0 stand is of 4-high construction with hydraulic screw-down, and to provide for the rolling of fukui fa engineering sec., fukui planning dept., plant facilities div.
The roll force model used was a classical slab method with constant friction assumed in the roll gap.For the roughing mill reversible 4-high both roll force and roll torque were available so the friction coefficient could be evaluated in addition to the flow stress for each pass.The values were close to 0.3 so it was decided to use this for.
-high reversing 2 stand mill with work roll long-shift and bender d1 230 l4 700 d2 200 l4 500 rougher 5 000 kw 2, finisher 8 800 kw 2 1976 2 050 360 5 350 27 2 walking beam 4-high reversing mill with attached edger and bender d1 220 l5 490 d2 400 l5 390 finisher 8 800 kw 2 super-olac 4 100 double-side, end guillotine cut type,.
End isaxiallylocated in the roll stand to which ittransmitsthe axialforces.The thrustbearings can be ofdifferenttypes.For high axialloadsand medium speedswe recommend to use tapered roller thrustbearingsfig.6, double-row tapered roller bearings with a large contactangle fig.7 or sphericalroller thrustbearingsfig.The tapered roller.
A mill alignment usually takes one or two days and is most often done by a professional.Every day, the mill operator should use a setup chart and follow all operating procedures.The operator also should know the chemistry, rockwell hardness, width, and thickness of the strip entering the mill.
Dandy roll is located on top of the forming fabric over the suction boxes.This is a light open structured roll covered with wire cloth, resting lightly upon the surface of the sheet.Its function is to flatten the top surface of the sheet and improve the finish.A pattern on the dandy roll may leave translucent patterns on the wet paper, in the.
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