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7530250 |
Method for straightening a metal strip and straightening machine
The invention relates to a method for straightening a metal strip ( 1 ) which is guided in the direction of transportation (R) through a straightening machine ( 2 ) and is straightened. In the...
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7444847 |
Method for increasing the process stability, particularly the absolute thickness precision and the installation safety during the hot rolling of steel or nonferrous materials
The invention relates to a method for increasing the process stability, particularly the absolute thickness precision and the installation safety during the hot rolling of steel of nonferrous...
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7333925 |
Manufacturing method and manufacturing apparatus of pipe, thickness deviation information derivation apparatus, and computer program
A complex Fourier transform is performed on measured values of wall thickness at points in a cross section of a pipe in an axial direction, types of thickness deviation are classified, thickness...
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7293440 |
Method of setting/controlling wedge in plate material rolling
A wedge setup/control method for plate material rolling ensures that the work side and drive side are equal in the rolled plate thickness. The wedge setup/control method, which is used in...
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7185520 |
Dynamic thickness correction
The invention relates to a method and a device for correcting the thickness of a metal strip during rolling comprising a roll stand with adjusting elements to regulate the thickness of the strip...
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7093469 |
Manufacturing method and manufacturing apparatus of pipe, thickness deviation information derivation apparatus, and computer program
A complex Fourier transform is performed on measured values of wall thickness at points in a cross section of a pipe in an axial direction, types of thickness deviation are classified, thickness...
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7086260 |
Method and device for controlling the thickness of a rolled product
The invention relates to a method and a device for controlling the final thickness of a rolled product (B) at the outlet of a rolling mill including at least two roll stands ( 1–5 ) operating in...
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7076979 |
Method and device for producing curved lengths of spring band steel
In a method and a device for producing curved lengths of spring band steel in order to produce precisely toleranced, dimensionally stable bending radii, the spring band steel ( 10 ) pass through a...
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7028518 |
Method of producing seamless steel tubes
A method of producing a seamless steel tube to enable it to suppress not only the deviations in wall thickness occurring in the direction of reduction in a mandrel mill but also the derivations in...
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7031797 |
Computer-aided method for determining desired values for controlling elements of profile and surface evenness
Input variables, which describe a metal strip prior to and after the passage of a rolling stand, are fed to a material flow model. The material flow model determines online a rolling force...
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6945083 |
Method of and apparatus for determining the eccentricity of a hollow billet
The eccentricity of a hollow billet is measured at the outlet of an inclined-roll rolling mill by launching an ultrasonic pulse into the billet from a laser of a measuring device and measuring the...
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6856855 |
Method of manufacturing sheet, device and program for controlling sheet thickness, and sheet
A method of controlling the thickness of sheets manufactured by the extrusion of a material from a die having a plurality of thickness adjusting means by repeating, at specified timings, the...
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6839605 |
Apparatus and method for diagnosing faults in hot strip finishing rolling
The present invention relates to an apparatus and method for diagnosing faults in hot strip finishing rolling, which diagnoses thickness faults in hot strip finishing rolling, using preset data and...
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6408222 |
Apparatus and a method for controlling thickness of a strip in a twin roll strip casting device
A strip thickness control method in a twin roll strip casting device having a fixed roll and a horizontally movable roll, the method including the steps of: measuring a movement value Gj(θ) of...
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6305206 |
Reversible rolling method and reversible rolling system
A pass schedule calculation apparatus calculates pass schedule and inputs the schedule to a preset apparatus which is plate thickness control means. The present apparatus controls a draft motor...
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6286348 |
Strip thickness controller for rolling mill
A strip thickness controller for a rolling mill, which is capable of reducing a delivery-side strip thickness deviation due to an eccentricity of a backup roll even in a rolling mill incapable of...
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6263714 |
Periodic gauge deviation compensation system
A control system is provided for a rolling mill that feeds sheet material from an unwind reel to a rewind reel, passing it between a pair of work rolls. The control system includes a speed sensor...
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6240757 |
Process and installation for rolling a metal strip
A process for rolling a metal strip, in particular a steel strip, using a cold-rolling train, which is followed by an annealing section and a temper pass section, the outflow thickness, i.e., the...
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6216504 |
Traveling sheet thickness changing method for cold tandem roller
Set values of a gauge-alteration-in-rolling amount after the next (i+1)-th stand and subsequent stands are modified, using the rolling results obtained when a leading end of a succeeding material...
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6176112 |
Method and device for dynamic adjustment of the roll gap in a roll stand of a mill train having multiple stands
A method of dynamic adjustment of the roll gap in a roll stand of a mill train having multiple stands for rolling a strip, with a strip stock, i.e., a loop, between two roll stands being adjusted...
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6158260 |
Universal roll crossing system
A method for hot rolling and cold rolling metal strip to a finish strip thickness, profile and flatness in a series of rolling mills each having roll bending and roll crossing capabilities to...
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6035684 |
Method of rolling strip, particularly metal strip
A method of rolling strip, particularly metal strip, for example, steel strip, in a rolling train with several roll stands arranged one behind the other, wherein the strip enters each of the roll...
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5970764 |
Roll forming apparatus
A roller die apparatus for supporting pairs of roller dies in predetermined clearances for processing a web workpiece, and for varying the clearances between the dies to accommodate variations in...
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5966682 |
System for calculating an output of a multi-stage forming process
A system for calculating an output of a multi-stage forming process using a model of the forming process with which the output of the forming process is determined as a function of properties of...
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5961899 |
Vibration control apparatus and method for calender rolls and the like
A vibration control apparatus (20) and method for a calender (18) for controlling vibration between two or more rolls (ex. 22, 24) which controls vibration induced thickness variations in a medium...
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5934129 |
System to control the surface profile of the back-up rolls in four high rolling stands and relative back-up roll
System to control the surface profile of the back-up rolls in four-high rolling stands (11) to produce flat products (14), the four-high rolling stand (11) comprising working rolls (12) and back-up...
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5927117 |
Methods to measure and control strip shape in rolling
A method to measure strip shape in rolling and a method of using the measuring method to control the same are provided in present invention, which can dramatically simplify the computation during...
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5875663 |
Rolling method and rolling mill of strip for reducing edge drop
It is possible, in a rolling method of a strip shifting one-side-tapered work rolls in the axial direction and causing the upper and the lower work rolls to cross each other, to appropriately set a...
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5860304 |
Strip crown measuring method and control method for continuous rolling machines
In the continuous rolling mills, the strip crown and the strip flatness of a strip can be controlled to any desired value. In the strip crown measuring method, the strip crown of the first stage...
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5816144 |
Precision roll stand
A precision roll stand includes a roll housing absorbing the rolling forces. In the roll housing rolls constituting a roll pair with their roll chocks are mounted so as to be rotatable and mutually...
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5771724 |
Method and apparatus for an anticipatory thickness control in foil rolling
A method and an apparatus for an anticipatory thickness control in foil rolling by using characteristic lines stored in a process control computer of the individual manipulated variables (for...
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5761066 |
Device for regulating the thickness of rolling stock
A device is provided for regulating the thickness of rolling stock in a roller stand. The device includes a control device that controls the roller adjustment of the roller stand as a function of...
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5758535 |
Method of producing corrugated fins
A method of producing corrugated fins employing a fin mill machine (12) for forming strip stock (14) into corrugated fins (16) to form heat exchanger fins or the like. A fin mill machine (12) that...
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5651281 |
Method and apparatus for rolling rolled strips
A method for rolling rolled strips 3, 4 in a hot strip rolling mill 6, comprises at least two roll stands 6, 7, with horizontally adjustable top and bottom work rolls 10, 11. Each work roll is...
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5647237 |
Process for suppressing the influence of roll eccentricities
In a previous process, the influence of roll eccentricities on the output thickness of the rolled material in a roll stand is suppressed by simulating the output signal of an oscillator and...
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5619880 |
Device for controlling the rotational speed of the rolls of a rolling mill
The rotational speed of the rolls of a rolling mill is controlled such that the loops of rolled material between two roll stands have a constant height. The last roll stand in the direction of...
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5609053 |
Constant reduction multi-stand hot rolling mill set-up method
This invention relates to a method and apparatus for improving rolling mill efficiency by providing modified fixed setup parameters according to the class of the material being rolled through the...
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5600982 |
Method for suppressing the influence of roll eccentricities on the control of the rolled product thickness in a roll stand
In the control of the rolled product thickness in a roll stand, to suppress the influence of roll eccentricities, it is known to provide a dead zone which is insensitive to signal fluctuations...
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5520037 |
Roll stand adjusting method
Rolling schedule computing method for adjusting the desired roll force and desired roll gap of a roll stand, in which before rolling a strip (1) of a prescribed quality from an expected material...
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5502992 |
Regulation system in the manufacture of hot rolled strips by means of a multi-stand hot rolling mill
The invention relates to control in the manufacture of hot strip by means of a multi-stand hot-strip rolling mill, especially a wide-strip rolling mill, which has a higher-order process control...
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5461894 |
Control system for a hot and/or cold rolling process
A feedback control of a hot and/or cold rolling process by means of a process control system, which executes a predetermined rolling program containing the initial and final dimensions, material...
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5341663 |
Automatic process control and noise suppression
A method for automatically controlling a nominal property value of a material in the process of making the material, The method includes the steps of providing a feedback model of the process and...
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5255548 |
Method for roller levelling of heavy plate
A method of levelling metal plate in a leveller having at least three vertically opposed sets of driven and backed-up upper and lower work rolls mounted in at least three upper roll frames and a...
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5101650 |
Tandem mill feed forward gage control with speed ratio error compensation
A method for controlling metal strip thickness in a multi-stand rolling mill is provided which employs feed forward control to adjust the main drive armature current at the upstream mill stand when...
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5086399 |
Method and apparatus for setting-up rolling mill roll gaps
In setting roll gaps of a rolling mill having stands arranged in tandem, the resistance to deformation of a workpiece in each of the stands is calculated on the basis of a cumulative strain in each...
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5077997 |
Method for compensating irregularities caused by roll eccentricities
A method and an arrangement for regulating the thickness of rolled strip utilizing the gauge meter method and for compensating irregularities caused by roll eccentricities, wherein the size of the...
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5054302 |
Hardness compensated thickness control method for wet skin-pass rolled sheet
A wet skin-pass rolling method for rolling a steel sheet by a mill while adjusting the hardness of said steel sheet through control of the rolling reduction. The method comprises determining an...
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4998427 |
Method for rolling on-gauge head and tail ends of a workpiece
A method for making delivery gauge corrections at low mill speeds during threading and tailing out of a workpiece by varying the interstand tension of the workpiece. The tension between the last...
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4936132 |
Continuous hot rolling process for making thin steel strip
This invention provides a continuous hot rolling process for making thin strip in which it is possible to roll strips at high rolling speeds required to keep a finisher delivery temperature equal...
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4912954 |
Method of rolling strip in a rolling mill and a control system therefor
In the rolling of a metal strip in a rolling mill which has a rolling mill train of one or more roll stands, before the metal strip enters the rolling mill train the roll stand are each given a...
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