US4162624A - Tension control method for a rolling mill,
In the control of the tension of a workpiece which is rolled by a tandem rolling mill, a tension control method for a rolling mill wherein the tension of a workpiece is controlled by a looperless tension control method employing no looper at the threading stage of the top end and at the tail-out stage, and it is controlled by a tension control method employing a looperTension control method for a rolling mill - Hitachi, Ltd.,A tension control method for a rolling mill according to claim 1, characterized in that when the looperless tension control method is to be changed-over to the tension control method with the looper, the former is changed-over to the latter via a region in which both said control methods are simultaneously executed.Tension Control Method For A Rolling Mill,Tension Control Method For A Rolling Mill. FOB Reference Price: Get Latest Price. 2019-2-18Do not attempt this method of measuring tension if there is a drive motor on the unwind or for a rewind with a drive motor.JP2009279638A - Rolling mill and method of controlling,,SOLUTION: A method of controlling the tension of the rolling mill which is provided with winding reels (13a, 13b) for winding the material to be rolled respectively on the inlet side and the outlet side of a hot-rolling mill (21, 22), winds the material around mandrels inside the winding reels and repeatedly rolls the material while applying a,JP2006231395A - Tension control method for tandem hot,,PROBLEM TO BE SOLVED: To provide a tension control method for a tandem hot rolling mill which can perform appropriate tension control even on a thick material such as one to be rough-rolled, when a steel sheet is rolled by the tandem hot rolling mill. SOLUTION: In the method, the roll rotation speed on R4 rolling stand 12 is adjusted so that a tension between R4Tension Control Method For A Rolling Mill,Vertical grinding mill. Ultra fine vertical grinding mill. MTW european grinding mill. MB5X158 pendulum suspension grinding mill. Trapezium mill. T130X super-fine grinding mill
US Patent for Tension control method for a rolling mill,
In the control of the tension of a workpiece which is rolled by a tandem rolling mill, a tension control method for a rolling mill wherein the tension of a workpiece is controlled by a looperless tension control method employing no looper at the threading stage of the top end and at the tail-out stage, and it is controlled by a tension control method employing a looperMethod for controlling tension in a metal rolling mill,,Interstand tension control system and method for tandem rolling mill: 4507946: Method and system for controlling an interstand tension in a continuous rolling mill: 4662202: Low tension cascade mill speed control by current measurement with temperature compensation: 4907433: Apparatus and method for adaptive control of a rolling millJP2963240B2 - Tension control method for tandem rolling,,Tension control method for tandem rolling mill Info, Prior art keywords tension stand rolling stands material Prior art date 1991-07-10 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)tension control method for a rolling mill - muzycznakutno,GAGE CONTROL METHOD AND SYSTEM FOR TANDEM . In accordance with the present invention, a final gage control system and method for a tandem rolling mill are provided wherein final gage is varied by varying tension in the strip material being rolled between the last two stands while the roll force exerted on the strip by the last stand is maintained constant forRolling Mill And Method For Controlling A Rolling Mill,,The invention further relates to a method for controlling a rolling mill, in particular, a col Id strip tandem rolling mill (1), for producing a metal strip (100), wh< rein in a production direction (P) of the metal strip (100), a first st and (220) is controlled as driving stand (220, 260) said driving stand ( (220, 260) achieving a significant increase in the mechanical inlet tension on the,THE MECHANICS OF TENSION CONTROL,occur when tension is not controlled at the unwind station. • It is impossible to rewind rolls from a process without proper tension control at the rewind station. Telescoping, “dished” rolls, wrinkles and even web breaks will occur when tension is not controlled at the rewind station. EXAMPLE OF A “DISHED ROLL”
tension control method for a rolling mill
Technical Info. （Rolling Mill Flat Products） Steel. New Rolling Method of Reversing Cold Rolling. A reversing cold rolling mill has been suffering from such drawbacks as unrolled portions necessarily produced in head and tail ends reduce yield, and time consuming works including removing of coils, threading of the strip and holding of the strip with the tension reel,Basics of Web Tension Control Summary,Methods of Control (Speed Control) ( ) 1 2 1 1 2 2 1 V EA V -V V V =T ⎟⎟+ ⎠ ⎞ ⎜⎜ ⎝ ⎛ R T 1 T 2 V 1 V 2 T 2 = Rewind tension V 2 = Rewind velocity Where: T 1 = Tension in the previous tension zone V 1 = Nip roll velocity E = Elasticity of the material ADeformation Processing - Rolling,Flat Rolling Analysis Results – without front and back tension p p µp µp σ σ x x + dσ x Stresses on Slab in Entry Zone Stresses on Slab in Exit Zone p p µp µp σ σ x x + dσ x Using slab analysis we can derive roll pressure distributions for the entry and exit zones as: h 0 and h b are the same thing 2tan1 ff RR H hh − φ = ()0 0 2,tension control method for a rolling mill - muzycznakutno,GAGE CONTROL METHOD AND SYSTEM FOR TANDEM . In accordance with the present invention, a final gage control system and method for a tandem rolling mill are provided wherein final gage is varied by varying tension in the strip material being rolled between the last two stands while the roll force exerted on the strip by the last stand is maintained constant fortension control method for a rolling mill,Rolling mill speed calculation formula pdf. rolling mill speed calculation formula pdf Empirical Sealed clean bearings for rolling mill roll neck Todays demands on productivity and quality in hot rolling mills for rod and wire require. The Rolling simulation program for calculating the empty gap unloaded stand.Method of controlling inter-stand tension in rolling mills,There is disclosed a method of controlling inter-stand tension in rolling mills in which a tension measuring device is provided on each stand. The tension measuring device comprises a pair of load sensing devices provided respectively at the entry and delivery sides of the roll stand. Difference between outputs from the pair of load sensing devices is used as an output value of
Method and system for controlling an interstand tension in,
In a method and a system for controlling an interstand tension in a continuous rolling mill having a looper provided between a pair of successive rolling stands and driven by a looper drive motor, a correction to the speed target value for the looper drive motor is determined in accordance with the deviation of a detected looper operating angle from an angle target value,The Study of Continuous Rolling Mill Inter-stand Tension,,rolling mill using different system for tension inferential control. The finished studies prove that size alignment is provided with the tension control system affecting speed of the further stands.Technological control for cold rolling processes,Tension feed-forward control The tension feed-forward control responds to entry thickness deviations and applies a suitable adjust-ment to the coiler torque in order to consider the in-teractions between roll gap and tension. Important sensors in a cold rolling mill Laser speed sensor Thickness gauge ABB Stressometer ABB Strip scanner1. Hot rolling and rolling defects: 1.1 Front and back,,Reducing the roll gap increases the roll pressure to p3. Gage control in multiple rolling mills is achieved through measurement of strip thickness using x-ray gage and adjusting the strip tension using feedback control system. 1.8 Rolling defects: Mill spring is a defect in which the rolled sheet is thicker than the required thickness because,Modeling and Control of Multi Stage Rolling Mill Process,,01-09-2016· Modeling and Control of Multi Stage Rolling Mill Process. Sheet Rolling Mill processes involve progressive thickness reduction of continuous sheet metal in multiple stages. Some of the control variables of interest are exit thickness, throughput and the tension in the sheet as it passes from one stage to the other.Basics of Web Tension Control Summary,Methods of Control (Speed Control) ( ) 1 2 1 1 2 2 1 V EA V -V V V =T ⎟⎟+ ⎠ ⎞ ⎜⎜ ⎝ ⎛ R T 1 T 2 V 1 V 2 T 2 = Rewind tension V 2 = Rewind velocity Where: T 1 = Tension in the previous tension zone V 1 = Nip roll velocity E = Elasticity of the material A
Deformation Processing - Rolling
Flat Rolling Analysis Results – without front and back tension p p µp µp σ σ x x + dσ x Stresses on Slab in Entry Zone Stresses on Slab in Exit Zone p p µp µp σ σ x x + dσ x Using slab analysis we can derive roll pressure distributions for the entry and exit zones as: h 0 and h b are the same thing 2tan1 ff RR H hh − φ = ()0 0 2,,,,,,
