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(Roll forming: )This film takes you through the processes within a hot rolling mill. You'll get to see the different stages all th...
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method, named endless hot strip rolling, to commercial production 4). Mill pacing, a technique to accurately control the rolling time of a rolled material and that of the following one, was improved to make the endless hot strip rolling practical by minimizing the idle time. The improvements also resulted in enhancement of the mill
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The hot strip mill process (HSMP) is a high-speed, transient metal machining molding process.1–3 In the steelmaking process, stable product quality and safe, reliable operation of a hot strip rolling mill are the main control objectives. The dimensional quality speci-fication,4 consisting of thickness, width, flatness, and
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Abstract: In this paper, a robust steering control is proposed as a means to guarantee the stability of a hot strip finishing mill and improve its performances. The aim of the rolling process is to obtain a metal strip which is uniform and at the desired thickness. The lateral movement of the strip may reduce the quality of the product and damage the rolls.
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In the working process of the coiler, from the strip head into the mandrel set up tension to the strip tail left the last finishing mill, the coiler entered the stage of tension control. Strip tensions are mainly provided between mandrel and pinch roll, between pinch roll and finishing mill.
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reheating process in the hot strip mill, in particular with a n ew control system for the reheat furnaces and a furnace simulatio n model used for off-line tuning of the new controllers of this ...
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The technologies incorporated in a modern hot strip mill to in improve the product quality are (i) automatic gauge control, (ii) automatic width control, (iii) work roll bending, (iv) continuous varying crown (CVC), (and v) roll eccentricity compensation. CVC is a way to change the strip profile by using rolls with a profile.
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This paper considers some of the control issues in hot rolling mills. Hence to set the context, first we give a brief description of a typical process. The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 mm. Fig. 1 shows
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In the research area Hot Strip Rolling, advanced nonlinear process control problems associated with the operation of a roughing mill and a tandem hot-strip finishing mill are solved. Rolling mill like the one shown in Fig. 2, constitute nonlinear MIMO dynamical systems. Their behavior is characterized by input, state, and time constraints, time ...
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Shape setup model (SSM) plays a critical role to achieve satisfactory precision of strip shape in hot strip mill process (HSMP). However, for the design of shape model, the lack of systematic shape theory restricts the high accuracy of strip shape. In this paper, the procedure of SSM will be generally introduced and practically demonstrated with a real HSMP producing …
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Process Manager, Slab and Conditioning, Hot Strip Mill (HSM) Division
Cleveland-Cliffs is the largest flat-rolled steel company and the largest iron ore pellet producer in North America. The company is vertically integrated from mining through iron making, steelmaking, rolling, finishing and downstream with hot and cold stamping of steel parts and …
Y. J. Wu 415 Figure 2. Diagram of coiler control process. Table 1. The tension value of Ut of hot roll strip mill.
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of the hot strip mill. The dimension and profile of the slab, the arrangement of the rollers, the edger and auxiliary components such as side guides, and the program control logic of roughing and finishing mills have significant influence on the quality of the semi-product or end product of hot rolling process. In fact, the quality of hot ...
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Aimed at the complex demand of hot strip rolling mill in practicing, the configuration of the coiler and the technological process is analyzed. The arithmetic of coiling tension and the control process is introduced. The frame of the tension adjusting system is given. The coiler control system hardware is designed. The system is designed scientifically with steady control and …
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Hot Strip Mill HSMM is one of several commercially licensed technologies developed under AISIs advanced process control programme, a collaborative effort among steelmakers and the U.S. Department of Energy to create breakout steel technologies. From: Primer on Flat Rolling (Second Edition), 2014 Download as PDF About this page
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@article{osti_795009, title = {AISI/DOE Advanced Process Control Program Vol. 3 of 6 Microstructure Engineering in Hot Strip Mills, Part 1 of 2: Integrated Mathematical Model}, author = {Brimacombe, J K and Samarasekera, I V and Hawbolt, E B and Meadowcroft, T R and Militzer, M and Pool, W J and Jin, D Q}, abstractNote = {This report describes the work of …
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Strip Edge Control / Strip Centerline Control The LMS 6500 CCD camera is used for strip edge control, either with background light for cold materials or stand alone when meas-uring through radiation of hot objects. Strip position control is need-ed in – Temper mills during strip rolling – Electrolytic tinplate production – Strip coiling
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Process Technology Engineer - Hot Strip Mill. Requisition ID: 24146. Reflected in our name, AM/NS Calvert is a joint venture between ArcelorMittal and Nippon Steel Corporation, two of the world's leading steelmakers. We use the most innovative technology to create the steels tomorrow's world will be made of.
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The complex control systems have been applied to hot rolling processes and, now, the control area covers the whole line. The process technology of hot strip mill has matured; however, the ...
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Improved process control of the hot strip mill may lead to indirect energy savings through reduced product rejects, improved productivity, and reduced down time. The primary aim is to control the oxygen level, and hence optimize the combustion in the furnace, especially as the load of the furnace may vary over time. The savings depend on the load factor of the furnace …
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spray valves are sequentially manipulated in the order of from the input side to the output side of a hot strip mill and the succeeding one has a larger cooling power than that of the preceding one. a computing device for computing the on-off time of the spray valves computes the cooling power required for a certain length of a sheet bar ranging from the leading end to a certain point of …
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Santanu Chakraborty, in Treatise on Process Metallurgy: Industrial Processes, 2014. 6.5 Rolling Mills. The rolling mill facilities were designed to meet the production requirement of Table 1.The rolling mills complex was proposed to include a light and medium merchant mill with breakdown group of stands for rolling blooms into billets and an intermediate in-line heat compensating …
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The complex control systems have been applied to hot rolling processes and, now, the control area covers the whole line. The process technology of hot strip mill has matured; however, the development of advanced control in this area is still active, for the reason that the demand to improve quality has become increasingly severe.
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CSI's Hot Strip Mill includes six finishing mills, which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature, between 1500° to 1650°F, specified to reach certain mechanical properties.
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The resulting hot-strip edges extend work roll campaigns on the finishing mill upto 150 km. The steel is descaled at high pressure before entering a 5-stand hot mill equipped with work roll shifting and bending plus automatic gauge control on all 4-high stands.
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better process control Today, cold and hot strip mills around the globe are continuously looking for ways to increase their productivity, save energy, lower their overall costs and improve the final quality of their products. Using lubricant in cold rolling and controlling the roll-wear in hot rolling are some of the ways to achieve these goals.
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the rolling process, especially in a cold strip mill. If the thickness variation of the hot-rolled aluminum strip can be reduced, it will be possible to increase the production speed of the cold strip mill. These claims set new demands on the acceptable rolling forces and torques which, together with the roll pass design, have a significant ...
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Abstract： Under the background of the Ningbo Steel 1780mm hot strip mill project, study the structure and function of the control system and platform, mathematical models, load distribution methods and schedule calculation methods, automatic width control methods for rough stands, build the process control system for rough stands, develop the related on-line application …
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Hot strip mills. You'll appreciate X-Roll ® hot strip mills from SMS group as all-round plants for high-quality hot strip. They are designed to produce flat steel from thin strip with a minimum final gauge of 1.2 millimeters to high-strength pipe steels up to 25.4 millimeters thick, including stainless steel grades.
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