Hot Rolling Mill Hydraulic Gap Control (HGC) thickness ...

    P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement – 94 – load between passes, and for accurate positioning during rolling two hydraulic cylinders are installed. The position of the cylinders is controlled by servo valves and the corresponding position controllers. This hydraulic servo is .

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    China 2b/Ba Surface Stainless Hot/Cold Rolled Steel Coil ...

    The surface is finished by heat treatment and pickling or processes corresponding there to after hot rolling: 2D: The finishes after cold rolling, by heat treatment, pickling or other equivalent treatment: 2B: The finish after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to give an ...

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    MECHANICAL ENGINEERING: HOT WORKING OF METALS

    Hot working such as rolling process refines grain structure. The coarse columnar dendrites of cast metal are refined to smaller equiaxed grains with corresponding improvement in mechanical properties of the component.

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    US6866729B2 - Method for controlling and/or regulating the ...

    A method and device for the automation of a cooling section in a hot strip rolling mill, wherein an individual course of cooling over time for each strip point of the metal strip is specified and whereby the cooling specifications can be determined from the desired properties of the steel, independent of .

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    Experiment Research on Hot-Rolling Processing of Nonsmooth ...

    After the rolling-head separates from the polymer coating, phenomenon of rebounding and refluxing of the polymer coating occurs, which is the reason of inability of the process. A continuous hot-rolling method for processing is used in the robot and the hot-rolling process of the processing apparatus is put in a dynamics analysis.

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    Occurrence of surface defects on strips during hot rolling ...

    The edge surface defects during a rolling process should not contain cracks might appear during the rolling process because the any initial defects. stress strength at the strip edge is greater than the maximum Owing to the spread behavior of strips during hot rolling, tensile stress of the materials.

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    Rolling processes - Al-Mustansiriya University

    Rolling processes 5-1 introduction: Rolling is the process of reducing the thickness or changing the cross section of a long workpiece by compressive forces applied through a set of rolls, as shown in figure (5-1). Fig. (5-1) Most rolling is carried out by hot working, called hot rolling, owing to the large amount of deformation required.

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    Suitability of multi-layer perceptron neural network model ...

    Figure 3 Schematic of partial recrystallization and strain accumulation in hot rolling [18] At low temperatures (corresponding with the end of the hot mill) static recrystallisation takes place. There are two strain accumulation regions where the gradient of MFS vs .

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    Effect of Nb Microalloying and Hot Rolling on ...

    Effect of Nb Microalloying and Hot Rolling on Microstructure and Properties of Ultrathin Cast Strip Steels Produced by the CASTRIP Process KELVIN Y. XIE, LAN YAO, CHEN ZHU, JULIE M. .

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    Computer Simulation of Hot Rolling of Flat Products ...

    Nov 06, 2016 · Hot rolling process of flat products is a complex process involving plastic deformation of steel, multi-mode heat transfer, microstructure evolution and elastic deformation of rolls and strips. Computer simulation of this process is essential for design modifications of mill hardware and optimization of process parameters to achieve desired product quality with minimum processing cost and ...

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    Prediction of Process Parameters on Stress and Strain ...

    Prediction of Process Parameters on Stress and Strain Fields in Hot Rolling Process using Finite Element Method ... When the workpiece is in tension rolling state, the backward slip zone decreases and the corresponding contact normal stress decreases significantly and its distribution is very balance along the contact arc direction. For tension ...

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    Hybrid Hot Strip Rolling Force Prediction using a Bayesian ...

    Corresponding Author: Abdelkrim Moussaoui, Department of Electronics, University of Guelma, BP 401, 24000, Algeria 1885 Hybrid Hot Strip Rolling Force Prediction using a Bayesian Trained Artificial Neural Network and Analytical Models 1Ab delkr imM ous a, 1Y c nS 2H adj Ahme b si

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    IDENTIFICATION OF IMPACTING FACTORS OF SURFACE .

    IDENTIFICATION OF IMPACTING FACTORS OF SURFACE DEFECTS IN HOT ROLLING PROCESSES USING MULTI-LEVEL REGRESSION ANALYSIS Nong Jin and Shiyu Zhou Department of Industrial Engineering ... typical rolling process and the corresponding sensing system are introduced in Section 2. The

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    Three-Dimensional Finite-Element Simulation of Hot Ring ...

    A model was developed to investigate the hot ring rolling process taking into account the radial and axial rolling tools. ... The ring rolling process takes 190 s, corresponding to 40 revolutions. Figure 4 : Initial (a) and final (b) ring dimensions Drlring ring rolling. data such as the radial and axial efforts.

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    Hot Rolling - an overview | ScienceDirect Topics

    When hot rolling steel in the laboratory, using relatively small rolling mills, values of 4–20 kW/m 2 K appear to be the correct magnitudes. If modelling hot rolling of steel under industrial conditions, values of 50–120 kW/m 2 K are more useful. In both cases, the layer of scale is an important parameter.

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    US20030089431A1 - Method for controlling and/or regulating ...

    The joint properties of a metal strip being rolled in a hot strip rolling mill, especially a steel strip, are adjusted in the cooling stretch of said mill by cooling. According to the invention, a time-related cooling course is predetermined for each strip point of the metal strip. An individual cooling curve is established as a function of time for each strip point, the established time curve ...

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    ON-LINE CLASSIFICATION OF SURFACE DEFECTS IN HOT .

    ON-LINE CLASSIFICATION OF SURFACE DEFECTS IN HOT ROLLING PROCESSES Qingyu Yang, Qiang Li and Judy Jin ... defects is further divided into the corresponding subtypes. For example, the longitudinal type of ... feasibly adopted at the hot rolling process to online collect product surface images. Therefore, on-line detection and classification of ...

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    Rolling of Metals: Process and Principles (With Diagram)

    The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

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    Structural Stainless Steel - Penn Stainless Products

    Utilizing hot Rolling technology to produce stainless steel beams, angles, tees and channels has the following limitations. Hot Rolling is not typically utilized for large size stainless steel structural products due to limitations in production technology, as well as the .

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    Interrelation Between the Orientations of Deformation and ...

    Interrelation Between the Orientations of Deformation and Recrystallization in Hot Rolling of Anisotropic Electrical Steel Article (PDF Available) in Metal Science and Heat Treatment 57(7-8 ...

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    Integrated Scheduling of Reheating Furnace and Hot Rolling ...

    In the hot rolling mill, a cold slab is reheated in reheating furnace and then rolled into thin coils through hot rolling process. Traditional research on hot rolling mill generally takes the two processes as two separate single-objective scheduling problems, though they are closely connected and their optimization objectives are conflicting with each other.

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