Figure 1 shows the hot rolling line, where the present work was undertaken. When the study was carried out, the mill was equipped with soaking pits, numbered from 1 to 22 in Fig. 1. Currently ...Web
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Firstly, based on the state space analysis method, the multivariable dynamic transition process of hot strip rolling was studied, and the state space model of a gauge–looper integrated system in ...Web
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The looper is a roll on a pivot arm which lifts the strip, and is generally driven by an electric motor, although hydraulic or pneumatic drives also exist (Clark, Versteeg, & Konijn, 1997). Tension variations cause the looper to deviate from the nominal operating angle, from which the direction and magnitude of the variation can be inferred.Web
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As a simplified explanation, positive or crown-in bending is applied, when the bending forces open the roll gap. Crown-in bending causes the strip profile to be concave. Negative or crown-out ...Web
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Roll Cooling. 30 11 2002 In the metalworking rolling process in hot and cold rolling mills heat is generated by friction and deformation in the mechanical forming of the rolling stock As a result efficient cooling of the rolls as well as the surrounding roll area is essential for the forming process in order to ensure stable roll temperatures and effective heat …Web
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Abstract and Figures. Chatter is a common term for the intense, undesirable mill vibrations occurring in both hot and cold rolling. Its cost could be very high due to the reduced strip quality and ...Web
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This immense power gives the hot rolling and processing facility the capability and versatility to process and roll the broadest ranges of specialty metals in the industry. The finishing mill is normally designed with six to seven 4-high mill stands, each equipped with 10 MW drives and a mill-stand load of up to 55 MN.Web
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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. ... (HSM) are key to efficient production of flat products. Once you have decided to put your trust in SMS group's ...Web
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Top & Bottom Roll Bending Cyl. - Bore Ø 165 BKIT92400 Back up Roll Latch Cylinder - Bore Ø 38 BKIT94881 FM Backup Roll rig Cylinder - Bore Ø 357 BKIT99187 Work Roll Rig Cylinder - Bore Ø 203 BKIT90234 Coil Box Pinch Roll Cylinder - Bore Ø 127 BKIT90021 Pinch Roll Hold Down Cyl. - Bore Ø 80 BKIT99652Web
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› The Bridge module acts as a „firewall" so the HSM internal resources are protected from accesses by other masters › P/DFlash of the HSM are shared with the device, but can be protected via an „exclusive access" from TriCore™ and other masters accesses › HSM, as a system on chip, is a bus master on the SPB HSM SPBWeb
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A looper installed at inter-stand positions reduces tension variations by changing its angle, so it can contribute to the quality of products. It can also enable …Web
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When the optimization in loop " i " is saturated, next stage of optimization begins in loop " j " with reducing slab thickness (Boxes 10 and 11). In many cases, it is much effective to reduce the slab thickness even simultaneously with reducing slab weight. All the HSM speed-temperature-reduction schedule (TT 1,Web
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Special attention has been paid to the looper system variables, tension and looper angular position, owing mainly to their great influence on strip thickness and finishing temperature [2]. ...Web
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Looper Roll - YouTube - looper roll in hsm process-mining equiments supplier. For example, in case of low strip tension between the finishing mill roll stands, the looper angle must be increased in order to increase the strip tension, as shown in …238000005096 rolling process Methods 0.000 title claims abstract description 6; 230000001276 …Web
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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 0.8–20 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 ...Web
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Uncoiling takes place with the help of pinch rolls. There are top pinch rolls and bottom pinch rolls, and they work in conjunction to maintain the continuity of the hot rolling process as shown in Fig. 2b. These are driven by a motor-connected bearing assembly. Failure occurred in the bottom entry pinch roll in its drive side as shown in …Web
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during the rolling process. In parallel, the high level of productivity and ... the innovative advantage e.g. in roll cooling, work roll lubrication or strip cooling technology. 2 3. HOT STRIP MILLS ... C-HSM Korea 2010 CS, API, DP 5.5 1.2 – 25.4 800 – 2000 Dragon Steel Taiwan 2010 SS, CS, API,Web
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2011 Installed Annealing furnace with Roll rotating facility 2012 Started facility for Flame hardening 2012 Plant II admeasuring 22000 sq.ft. went into operation. 2013 Company Name Changed to ATS TECHNO Pvt. Ltd. Manufactured ROT & FM Looper Rolls for HSM 2014 Manufactured Water Cooled Deflector Roll for CALWeb
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The Hot Rolling Process - California Steel Industries. The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for …Web
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data needed to apply HSM crash prediction method for "ramp proper" area (i.e., not including ramp terminals) Apply HSM ramp crash prediction method to each loop and diamond ramp to obtain predicted number of ramp crashes per year, by severity level From highway agency records, obtain actual observed crash frequency, by severity level,Web
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The aim of the hot strip finishing mill process is to roll transfer bars, produced in a rough milling process (around 30 mm thick), into steel strips of variable thickness (between 0.8 and 20 mm) [, ]. The reduction of the thickness is achieved by moving the metal strips through rolling strands where pressure is exerted [-].Web
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tension between the finishing mill roll stands, the looper angle must be reduced, as shown in Figure 3, to reduce the strip tension [1]. Due to the changes in looper angle and torque, caused by changes in strip height and length between roll stands, the looper angle value must remain constant, creating a flexible system to absorb mass flowWeb
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On the high speed version, you're running 65% stepover. On the non-HSM version, you're running 0.045 / 0.500 = 9% stepover. So two things to consider. First, the only difference between an HSM and a non-HSM toolpath is the HSM plays tricks to avoid radically increasing the engagement of the cutter in corners.Web
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Digital angle transducer. Attached to the looper main shaft. Directly measures the angle cp (Fig 1). The advantage of measuring the angle direct is that the complex kinematics of the cylinder attachment does not have to be considered for the calculation of the real position of the looper roll.Web
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Rolls for HSM - Cronite Group. Run out table rolls, looper rolls, pinch and wrapper rolls for Hot Strip Mills. Transfer rolls and plate mill rolls for flat products. Hot transfer table rolls for flat rolling mills. Exit run out table …Web
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High Velocity Oxygen Fuel (HVOF) spraying is a group of thermal spraying processes which spray flames at supersonic speeds. The detonation gun (D-gun) process was the first type of HVOF process used. In HVOF processes, kinetic energy of particles is more important than temperature. These processes use high-impact energy to produce dense ...Web
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A full list of the process variables can be found in. ... Looper roll radius r m. ... that the model of the HSM derived here is a multi-Web
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2. Materials and Methods. In this investigation, we used a centrifugally cast roll made of a high-Cr (Cr12) steel; its chemical composition is presented in Table 1.Thermal fatigue borehole samples with an investigated diameter of 8 mm and wall thickness of 2 mm were machined out of the centrifugally cast roller shell and thermally fatigued on a Gleeble …Web
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Abstract and Figures. The state-of-the-art of both technology and operational practice of a hot rolling mill are discussed. The focus is first on the control of entry temperature in the finish ...Web
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PDF | The looper control of hot strip finishing mill is one of the most critical control items in hot strip rolling mill process. It is a highly complex... | Find, read and cite all the research ...Web
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In the finishing mill of HSM, an important task is performed by a hydraulic arm, called the looper, placed in the middle between the two consecutive stands and whose purpose is to keep the strip tension at a …Web
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HOT ROLLING PROCESS IN HSM-2 2018-2019. CHAPTER 1 OVERVIEW OF JSW JSW has an interesting history. Though a foundation stone was laid in 1971 by the then Prime Minister Late Smt. Indira Gandhi for setting up an integrated steel plant under public sector, the plan remained a non-starter till 1994. . The public sector shelved the idea because of …Web
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• The roll rotational speed. • Front and back tension forces. • The deformation behavior of the metal being rolled (rheology). • Friction between the metal workpiece and the rolls (tribology). • Temperature of the metal workpiece throughout the process. • Time during rolling of each pass. • Total time to roll to final hot band ...Web
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hot strip mill (HSM) is a process that rolls steel slabs into coiled strips. The finishing mill (FM), where the strip takes the final thickness, is the most critical process in an HSM...Web
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Whereas transfer bar cooling is installed on HSM's [1,2], induction heating is more frequently used ... shifting, prediction of roll forces and looper tension. The first set of tools are there ...Web
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A hot strip mill (HSM) is a process that rolls steel slabs into coiled strips. The finishing mill (FM), where the strip takes the final thickness, is the most critical process in an HSM because of the great ... Looper i torque reference ˝i Nm Looper i roll radius r m Stand i exit thickness hi m Distance between stand i and iWeb
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masses during the sizing process ensure only minor wear, even after many years of operation. The essential technological advantage of the slab sizing press over a conventional edger – besides the large width reduction – is the distinctly better through-form - ing of the slab right to its center. The slab sizing pressWeb
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The Hot Rolling Process The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process...Web
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위 도식중 좌측 그림에서 보시면 roll in - roll out을 확인 하실 수 있습니다. ... -저희 홈페이지에 가셔도 hsm에 대해서 더 많이 아 수 있습니다.-문의 사항은 이메일과 전화로 주세요. hsm-회사소개서 (롤투롤, 압출코팅라미네이팅, 슬리터, 스크랩처리기)Web
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Abstract. The looper control of hot strip finishing mill is one of the most critical control items in hot strip rolling mill process. It is a highly complex nonlinear system, with strong states coupling and uncertainty that present a difficult control …Web
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