The slab is rolled into hot strip (thickness ranging from mm to around 16 mm and width ranging from 800 mm to 1880 mm) as it passes through the finishing mill of 5, 6 or even 7 stands. The hot strip after rolling enters the run out table (ROT) where it undergoes laminar cooling to the coiling temperature. It is then coiled to room temperature.
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Figure 22 compares the calculated and observed transformed fraction of each phase in mass% mass% mass% Mn steels hot rolled in a twostand laboratory mill from 40 to mm by six ...
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Hot strip mill. Hot rolled coil. and sheet. Main products. Plate mill. Plate. Wire rod mill. Wire rod. Section mill Bar. Shape. Sheet pile. Rail General flow diagram of Iron Steel making ...
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Fig 1 shows the outline of a typical continuous hot strip mill. Its purpose is to process cast steel slabs into steel strip. The first obvious effect is the large dimensional change of the processed piece. The slabs, of up to 35 t weight, are typically 250 mm thick and 10 m long, and the rolled pieces are typically 2 mm thick and 1,250 m long. ...
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Hot Rolled Coil (HRC) is a product of an Indonesia's largest steel company. HRC is manufactured by one of the company's plants, the Hot Strip Mill (HSM) (Fachrur and Karningsih 2017) . According to the steel company, the HSM Plant produced HRC units with faults from January to December 2018. Even if the manufacturing
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With the development of the intelligence control, its application is increasingly attracting people's attention. And intelligent control scheme for hot strip rolling based on the fuzzy control was proposed to conduct the dynamic stochastic adaptive control of coiling temperature. 10,11 In order to obtain optimal fuzzy proportionalintegralderivative (PID) controller parameters of active ...
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Hot‐rolled sheets and coils Cold‐rolled sheets and coils Electrolytic tinplate
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Compact in design, CSP ® produces highquality hot strip in a single manufacturing line that combines casting, heating, and rolling. Our proven CSP ® caster with its patented funnelshaped mold casts thin slabs in thicknesses ranging from 50 to 90 mm. Next, the slabs go into the CSP ® furnace for temperature equalization. Straight after that, the CSP ® mill rolls them to final strip thickness.
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where (h_{{text{c}}}), (h) and (h^{prime }) are the thicknesses at the center, 40 mm on the left side and 40 mm on the right side of the strip, respectively.. As is shown in Fig. 2, the simplified diagram of the studied rolling process includes six finishing mills, and all finishing mills are HCW (high crown mill with work roll shifting) that only consists of back up rolls and work rolls.
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Diagrams BLAST FURNACE ROUTE (11) Sections (7a) Hot Rolled Coil (12) Rebar (13) Engineering Steel (14) Wire Rod D C F G1 I K H J to Pickling Sinter Coke making Blast Furnace BOF Steel Making Section Rolling Rod Bar Rolling Hot Strip Mill Heavy Plate Rolling Graded Sinter Coke Hot Metal SlabsBloomsBillets (8b) UO Pipe UO Pipe Making (10 ...
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The XRoll® hot strip mill from SMS group is an allround talent in hot strip production. It is the proper solution for ultrathin gauges up to thick gauges for all steel grades incl. LC, ULC, high strength grades, API grades. ... Strip cooling is an important process in hot strip mills. To establish flexible cooling strategies and to achieve ...
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accuracy this industry now demands for temperature readings throughout the hot rolling process. Williamson MultiWavelength Technologies Williamson offers two multiwavelength technologies for the aluminum hot rolling mill. Each technology includes applicationspecific ESP algorithms for optimal performance.
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Aiming at the complex changes of the working rollers and rolled pieces in the rolling process of a cold rolling mill, this paper built a finite element model of the working rollers and rolled ...
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The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness mm. Fig. 1 shows a typical layout of a hot strip mill. Slabs are heated up to around 1200 °C in reheating furnaces and then rolled on two reversing roughing mills which reduce the thickness of bars to ...
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The hot strip steel mill is universally considered one of the harshest environments for process instrumentation and sensors but as the material speed and temperature increases, so does the importance of the measurement values. To ensure product uniformity, hot rolling mills need reliable, repeatable process control data to identify operating ...
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The production process for metallic coated and organic coated steel begins with the pickling or cleaning of hotrolled coils in order to remove the iron oxide scale which is formed during hot rolling of steel. ... The Cold Rolling Mill reduces the thickness of HRPO coils to the required thickness, with the percentage reduction ranging from 50 ...
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Cooling. After exiting the finishing mill, the strip, at a temperature of 800900°C, is cooled further under controlled conditions by a water curtain on the runout table. The runout table may be as long as 150200 m. Cooling water is sprayed on the top of the steel at a flow rate of 20,00050,000 gpm; and on the bottom surface at ...
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Existing method of runout table drive control on the hot strip mill ensures the required strip tension by setting a difference between speeds of the delivered strip and roller bodies. Such difference results in a higher wear rate of roller bodies and their more frequent replacement, entailing high expenses. Thus, a currently important objective is to increase efficiency of runout table ...
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According to Fig. 5, the industrial HSMP basically consists of 6 subunits in turn: reheating furnaces, roughing mill, transfer table and crop shear, finishing mill, runout table cooling and...
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from the rolls, the process is called simple rolling. Hot and Cold Rolling Processes From metallurgical point of view, rolling process can be classified under two broad categories, namely (i) hot rolling and (ii) cold rolling. Hot rolling In hot rolling the material is rolled at a temperature higher than its recrystallization temperature.
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The same is shown in the flow chart. Classification of Rolling Process Rolling Process can be classified either i)based on the temperature of the metal during rolling or ii) based on the arrangement of the rolls and their number or iii)based on the Products rolled. i)based on the temperature: Rolling can be classified as Hot Rolling or Cold ...
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The left diagram in Fig. 8 shows the improvement of the strip position after the finishing mill. The strip shows less variation of the strip centerline position. As a result from the stable strip flow, the variation of the strip wedge measured after the finishing mill is also reduced, shown in the right diagram in Fig. 8.
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To further improve control over strip properties at the LTV Indiana Harbor works' 84in. hot strip mill and to replace 1960's vintage analog control hardware, a modelbased coiling temperature ...
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The hotdip process is used to produce most zinccoated steel. Batch process The oldest method of hotdip galvanizing is the batch process, and which continues to be used for fabricated steel items such as structures, pipe, and fasteners. It involves cleaning the steel articles, applying flux to the surface, and then immersing ...
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Hot Strip Mill Evolution Hot strip mills have evolved in various steps from original tinplate and sheet rolling mills. The development of semicontinuous and continuous multistand mills followed, producing smalldiameter and eventually largediameter steel coil products.
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Hot Strip Mill of CockerillSambre Carlam Steel Plant. Da tta et al. [8] described a Petri Neural Network model, a multilayered feed forward network model, for prediction mechanical properties
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PSO, constriction factorbased PSO (CFPSO) and bat optimization algorithm (BOA) are also run for comparisons. Two systems are used to run the four methods. The first system is comprised of nine ...
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Thehot strip mill at Stelco Steel's LakeErie Works (LEW)is represented schematically in Fig. 5. Further details ofthis mill are provided in Ref. 15). The time for each step in the process wascalculated from the data supplied by Stelco regarding the dimensions of the mill andthe rolling speeds. An is l distribution > No distribution Flow *
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