Simulation of Edge Defects Behavior of Slabs in the Sizing Press and Roughing Mill of a Hot Strip Mill Farzad Foadian Research Assistant, Institute of Metallurgy, Clausthal University of Technology, 38678 Clausthal‐Zellerfeld, Germany
Keywords— Hot strip finishing mills, Looper ... and thickness and width in the steel strip in the finishing mill. Simulation results show the effectiveness of the proposed
of the strip is modelled. This model consists of 4 node quadrilateral shell elements. The rolling is performed in a 5-stand mill with roll diameters of 520.1, 541.2, 566.7, 574.3 and 584.6 mm, respectively. The relevant properties of the used st1521 sheet in the simulation are expressed in Table 2. Here, the flow rule is expressed by simple power
hot strip rolling line. Their main task is to coil the strip out of the finishing mill, and then transport to the next working procedure. The core part of coiling control system is the tension control. The control effect of coiling tension is directly related to the production and quality of hot rolled strip steel, therefore tension must be main-
strip, bars, rods, wires, and tubes. All of these products can be classified as steel mill products. The American Iron and Steel Institute (AISI) estimated 1991 U.S. shipments of steel mill products at 78.8 million tons.4 Although statistics on the percentage of total steel mill products processed by pickling operations are not available, we can
of the tension device and the strip is compressed by the rolls of the sub-stand. The strip is heated at a constant temperature of 800 C using the infrared image furnace. The atmosphere in the infrared image furnace is controlled with Ar gas. Table 1 Specification of simulation testing machine for hot rolling. Velocity of main roll, U ≤207m/min
Hot strip mills are processes with a very high throughput of products. They are highly developed capital intensive and competitive businesses where control systems are essential to maintain product quality and production efficiency. Even small improvements in the accuracy of the product and mill availability yield significant savings for the steel producer.
An optimal multivatiable looper control system based on decoupling strategy has been developed for hot strip finishing mills. Based on the dynamic configuration of the coupling system, we can get the status space expression of the coupling loopers system. Through the tools of Matlab we make out of the transfer function of looper system. Based on Decouping-Inbariable character …
A Mathematical model has been developed to predict the temperature profile of the strip during water-cooling on the Run-out Table (ROT) of the Hot Strip Mill (HSM). This work describes the development and implementation of the model at Tisco's HSM.
The Hot Strip Mill no 2 of Hoogovens consists of four furnaces, a roughing mill of 5 stands, a finishin g mill of 7 stands, and a runout table and 3 coilers (See also fig.1).
References. A. Suebsomran and S. Butdee, "Cooling process on run out table by simulation method," Case Studies in Thermal Engineering, 2013. View at: Publisher Site | Google Scholar A. Mukhopadhyay and S. Sikdar, "Implementation of an on-line run-out table model in a hot strip mill," Journal of Materials Processing Technology, vol. 169, no. 2, pp. 164–172, 2005.
Download (.pdf) • Effect of Water ... Simulation of thermal history of work rolls of finishing stand in hot strip mill: ... ABSTRACT The work rolls in the finishing stands of any hot strip mill (HSM) experiences thermal shock owing to changes in temperature from initial boundary conditions. The thermal expansion owing to the change of ...
In order to understand and reduce the problems of camber in the hot strip mill, it is important to be able to measure it accurately. However, up until now a suitable instrument was not available on the market. Sollac Dunkirk (pilot plant) together with IRSID and EES, decided to develop and test a trial online system in the roughing mill, with financial support from ECSC. …
This paper describes simulation study carried out with a commercial computer simulation software, namely Hot Strip Mill Model (HSMM), developed …
Product Guide - Steel Plate (contd) Form 1254 3/16/05 (Reprinted 5/27/15) Page 3 of 4 OVERVIEW Cold Reduced Plate Higher in quality (surface, flatness and shape). Maintains flatness after shearing, burning, or laser cutting and lower in cost. Flatness Defect Causes Uneven cooling Non-uniform thickness Pricing Considerations
Materials Engineering, Vol. 16, 2009, No. 3 7 DEFECTS SIMULATION OF ROLLING STRIP Rudolf Miši čko 1, Tibor Kva čkaj 2, Martin Vlado 2, Lucia Gulová 2, Miloslav Lupták 2, Jana Bidulská 2 Received 26 th May 2009; accepted in revised form 8 June 2009 Abstract The defects in the continuous casting slabs can be developed or kept down in principle by rolling
A prerequisite for automatic process set‐up and control in a hot strip mill, in a cold rolling mill, and in a plate mill is to acquire a precision mathematical model for the prediction of the strip profile and the residual stresses. In this paper, an issue is raised regarding the importance of taking into account the effect of post‐deformation.
made of hot-rolled strip are supplied in the following forms: » Wide strip (coil), with mill edge or cut edge » Longitudinally slit strips with cut edges » Cut-to-length sheet with mill edge or cut edge The products can be ordered by steel grade and dimension in unpickled or pickled condition.
phs-directform® is a galvanized steel strip produced using the direct hot forming process for structural components with tensile strengths of up to 2000 MPa. More information. hot-rolled drive. Hot-rolled micro-alloyed steels that impressively exceed the specifications of the VDA 239100 standard. More information.
Inline temper mill For continuous galvanizing, 4-high CGL up to 220 Continuous annealing, and push-pickling CAL up to 450 lines. Hot skin pass mill For adjusting material and strip 4-high 400,000 – 900,000 up to 700 Discontinuous surface quality, improving strip latness and recoiling, dividing or inspection of coils
This paper provides an illustration of this methodology for a hot strip mill in the steel industry and a demonstration of ergonomic design applications. A special simulation package which was developed for small military systems was adapted to this large industrial case and applied to an older manually-controlled mill of the 1930s.
HOT STRIP MILL — HIGHEST PERFORMANCE FOR NEW AND EXISTING STEEL MILLS The demand for hot rolled strip is growing in multiple ways. To remain competitive, new and existing mills must meet this challenge in the best possible way. The production of hot strip is a key element of steel production.
A prerequisite for automatic process set‐up and control in a hot strip mill, in a cold rolling mill, and in a plate mill is to acquire a precision mathematical model for the prediction of the strip profile and the residual stresses. In this paper, an issue is raised regarding the importance of taking into account the effect of post‐deformation.
• a mill stall due to a "slab sticker", Hard and Soft Spots: • rolling accidents such as strip welding, wrong These surface and/or subsurface defects pre-set of the roll gap etc. appear as circular or semicircular, white or grey spots http: // (C)International Journal of Engineering Sciences & Research Technology [151-159 ...
Simulation and control of high-order flatness in rolling wide titanium strip with 20-high mill Guanyu Zhou1, Hui Li1, Anrui He1*, Chao Liu1, Wenquan Sun2, Simeng Chen2, Zhengqiao Liu3, Cong Han3 1 National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China 2 National Engineering Technology …
The hot strip mill can produce products from 1,6mm to 13,0mm thick depending on the grade. From Saldanha thicknesses from 1,5mm can be supplied. See thickness ranges in Hot Rolled Price List. The dimensions available are given in the data sheet: Hot Strip Mill Product Dimensions (file reference A1.1).
Roll deformation is an important part of profile and flatness control system. Computation speed and accuracy of roll deformation model is a research hotspot, which provides a precondition for online application. This paper puts for- ward a new roll deformation model of four high hot rolling mills based on improved influence function method. In the new model, …
12%The third section is devoted to explain the mathematical model of the hot strip mill, splitting the global model in several subparts. The following section explains briefly the design of the simulator and its implementation on …
Fukuyama Plate Mill Example of developed equipment [Joining machine for endless rolling at Chiba No.3 hot strip mill] High-speed camera image Numerical simulation Laboratory cooling test Steel sheet Nozzle Molten zinc Steel sheet Nozzle Molten zinc Heat treatment On line Process [HOPTM] at Fukuyama Plate Mill Heat generation 2 4 Rolling ...
Automatic rolling process is a high-speed system which always requires high-speed control and communication capabilities. Meanwhile, it is also a typical complex electromechanical system; distributed control has become the mainstream of computer control system for rolling mill. Generally, the control system adopts the 2-level control …
out on a Gleeble-3500 Thermal Mechanical Simulation System to simulate a hot finishing strip mill. An investigation of scale growth on an as-supplied surface proved that the growth of the original 21m layer of scale decreased as the steel μ oxidized further. The effects of hot rolling on the surface roughness and oxide layers such as
numerical simulation, lead to anticipate the modifications, which can be made at a much lower cost. The rear wall of the IVECO cabin represents a very interesting example. Here, all the problems encountered at the die try-out stage have been . …
online application had to be created by modifying and extending the models and by using the production parameters of the hot-strip mill, such as rolling forces, temperatures, and cooling header switching times [4-6] The simulation covers all metallurgical processes from austenitization and dissolution of
Key words: FEM, Simulation, Hot Rolling, Width. 1 INTRODUCTION In this paper, we discuss the modeling and simulation results of FEM analysis for width rolling for hot strip mill. The number of standard widths that can be produced efficiently in a continuous slab caster feeding a hot strip mill is limited. This has increased the requirement for
It is concluded that mill tilting strategies can be simulated and successfully applied to reduce the curvature of camber and wedge in the roughing stages of the hot strip mill.
Following this, a set of experiments was performed to supply data for the validation and verification of the models. Physical simulations of the hot strip rolling were performed using plane strain compression (PSC) tests on the thermomechanical simulator. In the PSC test cuboid samples were compressed between two flat dies, see [6] for details.
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