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Material temperature on the delivery side of the finisher is an important factor in the mechanical properties of the product coils. In order to achieve and maintain the target delivery temperature of the finishing mill, a finisher delivery temperature control system (FDTC) was developed for implementation in a newly built hot strip mill.
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Fig 1 Typical hot strip mill layout showing some key rolling parameters. Typically, at the first stand, the roughing mill, the thickness of the hot slab (1,240 deg C) is reduced by making several passes, forward and reverse, through the mill. ... the opportunity to replace thicker gauge hot rolled material in some applications and its potential ...
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This paper describes the state of the art in hot rolling process control, especially in hot strip mill. Firstly, the new trend of hot strip mill line is described. …
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Profile requirements of silicon steel strip are extremely high and the thickness difference of cold-rolled products is usually less than 7 μm, and the profile quality of hot-rolled strip is the key to ensure the thickness difference of cold-rolled products. In order to produce the silicon steel strip with high-precision shape, the concept of quasi …
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The application of X-ray measuring technique in hot strip mill was analysed, combined with the RM312 profile gauge made by Thermo Radiometrie company in England. Various interference factors should be solved during the application of X-ray diameter measuring. The techniques of alloy compensation, temperature compensation, stereoscopic profile …
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Learn how to optimize roll temperatures and heat balance in the cold rolling process of steel strips. The web page explains the heat generation, exchange and migration in the roll …
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roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely exceeding 160 oC depending on product. Roll Bite temperatures in slower heavily drafted stands can peak in the region of 300oC, diminishing with the
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Thickness deviation of hot strip rolling needs to be strictly controlled in the computer system. An adaptive threading technique was researched, in which the measured data from threaded stands were used to predict thickness and material hardness errors, to modify the setup for the remaining unthreaded stands. After the adaptive threading …
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By constructing appropriate Lyapunov functionals, sufficient conditions for the control gains and the quantizer's adjusting parameters are provided in forms of linear matrix inequalities. Finally, an application of the output regulation strategies into the cooling process in a hot strip mill is explored.
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The widest range of hot rolled products, with thickness up to 25.4 mm, width up to 2050 mm and coil weight up to 36 mt. The widest Hot Strip Mill in India, capable of rolling up to 2150 mm. A rare product portfolio, perfect for line pipe applications, with the capability to produce X70 grade up to 20mm thickness. Ultra-low carbon for IF & IFHS ...
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A schematic layout of the hot strip mill is illustrated in Fig. 1. The heating furnace ensures the slab into roughing area can reach 1200 ∘ C, and the slab can roll into the middle of the billet of 28–45 mm after 3 to 5 passes roughing. Heat output roller will send strip into finishing area from roughing area, and then the strip will roll ...
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The importance of the Hot Strip Mill to the steel production process has driven our Liquid Engineers to create a range of products and services that help improve productivity and reduce total cost of ownership in this demanding environment. ... (High performance lithium grease for heavy-duty applications and harsh environments (heat, water ...
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Learn how Tsubaki products are used in hot and cold rolling processes for steelmaking. Find out about chains, conveyors, trolleys, drives, jacks, and loopers for various applications.
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After the adaptive threading model was used online on the hot strip mill of the Panzhihua Iron and Steel Group Co Ltd, the thickness deviation was decreased obviously. ... 29-31, 36 Application of Adaptive Threading Technique to Hot Strip Mill DING Jing-guo1, HUXian-lei1, JIAO Jing-min1'2, SHE Guang-fuU2, LIU Xiang-hua' (1. …
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A Novel Scheme for Key Performance Indicator Prediction and Diagnosis With Application to an Industrial Hot Strip Mill Abstract: In this paper, a data-driven scheme of key performance indicator (KPI) prediction and diagnosis is developed for complex industrial processes. For static processes, a KPI prediction and diagnosis …
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Application to the hot strip mill process4.2.1. Introduction of the HSMP. The modern hot rolling process, characterized by high temperature, high velocity, multiple stages and strong coupling, has achieved full automation.
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Hot Rolling Mill The slabs cool outside before being reheated in the reheat furnace. The slab (210 mm thick and weighing over 10 tonnes) is then transferred into the reversing rougher mill and is reduced in thickness with each pass.
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In a hot strip rolling mill (HSRM) process, the control of the crown quality of a strip steel is of paramount importance. In this paper, a distributed crown prediction model based on an improved Variational Autoencoder (VAE) framework is proposed. The model integrates a multi -layer VAE architecture to better accommodate the complex distribution of actual …
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The descaling operation on a Hot Strip Mill (HSM) uses high pressure water jets to remove the thick, hard and brittle oxide scale, in order to avoid oxide embedding into the metal which degrades ...
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Looper equipment. Loopers are material accumulating devices used for transferring, winding, and unwinding rolled steel. In surface treatment lines such as CAL and CGL, when the seams between coils on the inlet side …
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Learn about the basic objectives, principles, and constraints of hot rolling steel slabs into sheets or strips. See the design and operation of a typical hot strip mill with coil box and reheat furnaces.
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Two alloys grades for work rolls used in the roughing stand of Hot Strip Mill (HSM) are compared. The first grade known as High Chromium Steel (HCS) is presently the most widely used alloy for such an application, while the second one known as semi-High Speed Steel (semi-HSS) is the new grade developed to improve the overall performance of the
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Abstract: Due to the difficulty in strip crown prediction caused by multivariable, nonlinear and strong coupling in the hot strip rolling mill (HSRM) process, this paper proposes a strip crown prediction model based on support vector regression (SVR), and uses sparrow search algorithm (SSA) to optimize the parameter C and $sigma$ of the model ...
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Seki Y., K. Sekiguchi and Y. Anbe, "Optimal Multivariable Looper Control for Hot Strip Finishing Mill", IEEE Transactions on Industry Applications, Vol 27, No. 1, pp. 124–130, 1991. Article Google Scholar Tsuji Y., "High Quality Control in Hot Strip Mill", IFAC 10th Triennial World Congress, pp. 120–125, 1987.
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Backup rolls of hot rolling mills have long service life, can withstand harsh working conditions during rolling. However, they undergo severe roll wear that affects the contact force between rolls, resulting in roll fatigue and even spalling accidents. In this study, a fatigue-damage prediction model of a backup roll considering roll wear is …
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employed to monitor hot strip mill production processes and provide real-time data on various aspects of energy consumption. An energy con-sumption and prediction system …
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Hot strip mill process (HSMP) is a typical nonlinear dynamic manufacturing process, which aims to produce steel coils with a given thickness [25]. Fig. 1 is a schematic layout of a hot strip mill in Ansteel corporation in Liaoning Province, China. The process is composed of several. Conclusions
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The X-Roll® hot strip mill from SMS group is an all-round talent in hot strip production. It is the proper solution for ultra-thin gauges up to thick gauges for all steel grades incl. LC, ULC, high strength grades, API grades.
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With the increasing demand on higher strip quality, the profile and flatness of hot rolling strips have become subjects of concern, particularly for compact strip product (CSP) hot strip mills. Based on …
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matic control technology, and the application of technical equipment and technology, such as hydraulic transmission, speed-up rolling, laminar ... metal society (2002) Hot strip mill and production technology in China. Metallurgical Industry Press, Beijing 2. Wang T-P et al (2014) Modern rolling science. Metal-lurgical Industry Press, Beijing
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