mill roll gap calculation

  • SATO Kazuyuki : Manager, Machinery Engineering

    2021-5-11 · roll gap calculation using the value measured by the load measuring device as the actual value. For this reason, it is necessary to make a roll elastic deformation model that also considers the roll contact deformation in the kiss rolling regions. At the same timeHot Rolling Mill Hydraulic Gap Control (HGC) thickness,2015-11-4 · thickness, roll gap, and rolling force can be expressed by spring equation Eq. (1): M F h S 0 0 (1) where S 0 is unloaded roll gap; F 0 is rolling force; M is the mill stiffness or mill modulus. The strip thickness reference has to be created first during the lock-on process by

  • A BASIC UNDERSTANDING OF THE MECHANICS OF

    2003-10-15 · Roll productivity is growing for many reasons, perhaps we can talk about a 5% increase. (Roll consumption today for long products is down from 10 15 kg/t to 1 4 kg/t; for flat products from 4 6 kg/t to 1 2 kg/t; with strip casting roll consumpti.Rolling Mill an overview ScienceDirect Topics,This function also contains mathematical models which calculate the optimum rolling set-ups for the mill (e.g. gap, speed, force, temperatures). The next lower level of control, level 1, is the basic automation which controls the basic sequences and automation functions of the individual equipment in the hot mill.

  • PROCESS OF ROLLING MILLS

    2016-2-25 · If a mill rolls 80 % of the calendar year, that is 365 x 24 x 0.80 = 7008 hours. If the mill rolls 800,000 tons per year, it runs at an average production rate of 114.16 tons/hour. If the.Understanding Rolling Process in Long Product ,2015-11-27 · If a mill rolls 80 % of the calendar year, that is 365 x 24 x 0.80 = 7008 hours. If the mill rolls 800,000 tons per year, it runs at an average production rate of 114.16 tons/hour. If the utilization can be improved by 1 %, the available rolling hours is 365 x 24 x 0.81 = 7096.6, creating 87.6 extra rolling hours.

  • Designing of Hot Strip Rolling Mill Control System

    2016-8-5 · The first stage, when the strip head left out of the last finishing mill and signal is 1, the speeds of the hot run out table and the pinch roll are greater than the speed of the strip out of the last finishing mill, the speed of mandrel is greater than the speed of pinch roll. Therefore the speed given of the hot run out table, pinch roll andMILLING CONTROL & OPTIMISATION Mintek,2012-2-7 · stockpile, the varying size and hardness of the mill feed material affects the residence time in the mill and the power drawn. When the load becomes critically high, the feed needs to be cut in order to “grind the mill out”. This dramatic change in mass flow and particle size is passed to the downstream processes, causing

  • SATO Kazuyuki : Manager, Machinery Engineering

    2021-5-11 · roll gap calculation using the value measured by the load measuring device as the actual value. For this reason, it is necessary to make a roll elastic deformation model that also considers the roll contact deformation in the kiss rolling regions. At the same timeA flying gauge change model in tandem cold strip mill,2008-8-11 · Roll gap calculation formula : (6) S = h + S 0 − P − P 0 M where S is the roll gap, S 0 the reference value of roll gap, h the setup exit strip thickness of the stand, P 0 the reference value of rolling force, M the mill elastic modulus and P the rolling force which can be described by the Bland–Ford–Hill model (Jiang et al., 2003): (7

  • An Online Rolling Model for Plate Mill Using Parallel

    A new online rolling model of the draft schedule setup for a plate mill has been developed. This model comprises plate temperature, rolling force function and flow stress calculations and their coupling for the roll separating force estimation. The roll separating force calculation is also used when the work roll gap control is madeCalculation and Analysis of Force in roll System of 20,2013-9-1 · The calculation of force for a roll system has significant effects on cold rolled thin strip gauge adjustment of a 20-high Sendzimir mill. According to the rolling parameters and rolling plans of a ZR-22BS-42 Sendzimir mill in a silicon steel factory, the contact force and the resultant force of each roll in the roll

  • Strip Thickness Control of Cold Rolling Mill with Roll

    2013-11-12 · trolling the roll gap position is such that produces the desired output thickness [6]. Roll eccentricities are caused by axial deviations between the roll barrel and the roll necks due to irregularities in the mill rolls and/or roll bearings [11]. These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand.MILLING CONTROL & OPTIMISATION Mintek,2012-2-7 · Also, the mill load varied in the range of 125 to 165 tons. These disturbances propagated throughout the milling circuit and even to the flotation circuit. The Millstar Power Optimiser gave the following benefits: • Mill feed cuts were prevented, resulting in a stable mill loading. • No huge power dips occurred, since any sign of the mill

  • Coupled Vibration Characteristics Analysis of Hot

    2021-6-19 · F f2 and F f3 are the frictions on the mill stand. e 1 is the gap between the work roll bearing seat and the mill stand. x i, y i, and are horizontal, vertical, and torsional displacements. The equivalent horizontal stiffness K 23x is calculated by where is the roll flattening. Hertz indicated that the roll flattening can be evaluated asDesigning of Hot Strip Rolling Mill Control System,2016-8-5 · mandrel is greater than the speed of pinch roll. Therefore the speed given of the hot run out table, pinch roll and mandrel is the speed of the last finishing mill plus a certain lead rate, the lead rate is given in man-machine in-terface through the console. The second stage, when the strip tail through the last finishing mill and signal from

  • Rolling Mill an overview ScienceDirect Topics

    2.1 Experimental set up. A Hille-100 rolling mill with rolls of 225 mm diameter and 254 mm length, driven by a variable speed DC motor of 75 horse power, was used. The maximum rolling force, torque and speed are 1500kN, 13kN-m and 70 rpm respectively. The sensor roll Designing of Hot Strip Rolling Mill Control System,trol, both transformed under certain conditions, as shown in Figure 2.The former and later stages are speed control. The first stage, when the strip head left out of the last finishing mill and signal is 1, the speeds of the hot run out table and the pinch roll are greater than the speed of the strip out of the last finishing mill, the speed of mandrel is greater than the speed of pinch roll.

  • SATO Kazuyuki : Manager, Machinery Engineering

    2021-5-11 · roll gap calculation using the value measured by the load measuring device as the actual value. For this reason, it is necessary to make a roll elastic deformation model that also considers the roll contact deformation in the kiss rolling regions. At the same timeHigh Response Control System and Diagnosis System for,2021-5-11 · the calculation for variable mill modulus control, the calculation for roll gap and the detection of timing for impact drop compensation). This has already been practically applied to and demonstrated on several machines. 2.3 VMPC programming When a CPU was

  • dimension C-4-2 Contact measurement of the roll gap

    Roll gap control between mill rolls of steel plate rolling machine will seriously affect the quality of rolling. In this example, two GS-6830 linear gauge sensors and DG-2310 2ch-input digital gauge counter with sum difference calculation function enable to obtain the roll gap Method and apparatus for setting-up rolling mill roll ,The set-up of a finishing mill includes estimating the rolling force P i CAL and calculating the roll gap S i of each of the mill stands on the basis of the roll force estimation, where i=1, 2. . .,n, with which gaps and speeds, etc., of the mill stands are set-up in an actual plant.

  • Strip Thickness Control of Cold Rolling Mill with Roll

    2013-11-12 · trolling the roll gap position is such that produces the desired output thickness [6]. Roll eccentricities are caused by axial deviations between the roll barrel and the roll necks due to irregularities in the mill rolls and/or roll bearings [11]. These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand.A Flatness Based Approach for the Thickness Control in,2012-10-23 · roll. Thereby, the work rolls are effectively used for the strip deformation whereas the backup rolls serve to support the work rolls in order to prevent too excessive bending of the work rolls. The rolls are running in so called chocks which can move vertically in the mill housing and hence enable a change of the roll gap.

  • Measuring Paper Machine Performance

    2009-6-22 · Measuring Paper Machine Performance Dick Reese Dick Reese and Associates, Inc. 5121 Edgerton Dr Norcross, GA 30092 (770) 448-8002 [email protected] of Hot Strip Rolling Mill Control System,2016-8-5 · mandrel is greater than the speed of pinch roll. Therefore the speed given of the hot run out table, pinch roll and mandrel is the speed of the last finishing mill plus a certain lead rate, the lead rate is given in man-machine in-terface through the console. The second stage, when the strip tail through the last finishing mill and signal from

  • 彭文副研究员简介

    2019-5-20 · Optimization of Roll-gap Self-learning Algorithm in Tandem Hot Rolled Strip Finishing Mill[C]. The 26th Chinese Control and Decision Conference, 2012: 3947-3950. [7] Peng Wen, Ma Geng-sheng, Bu He-nan, Zhang Dian-hua.1. Introduction,2013-3-15 · solid breast roll near the headbox and a couch roll at the other end. The wire rotates between the breast roll and the couch roll. A forming board is placed after the breast roll to support the wire as the stock meets the wire. Drainage elements which aid in removing water are placed between the breast roll and the couch roll. These drainage