The hot strip mill referred here consists of six stands wherein high chromium (Hi-Cr) iron rolls and Indefinite Chilled Double Poured (ICDP) cast iron rolls are being used for finishing rolling of the strips in the last two stands. The thin strip mill produces strips in the thickness range of 1.0–12.7 mm.

avoids uneven roll wear – rolls wear more at edges than at center. Fig. 1.5.1: Roll bending . Roll camber can be varied by 1] bending the work rolls by applying external force. 2] Shifting of work rolls laterally with respect to centerline of the strip, 3] using shaped rolls – rolls with

Failure Analysis of Work Rolls of a Thin Hot Strip Mill Piyas Palit1, Hrishikesh R Jugade1, Arvind kumar Jha2, Souvik Das, and Goutam Mukhopadhyay1 1.

ThyssenKrupp Steel Europe spent a quarter of a million euros on renovating its hot-strip rolling mill in Duisburg. The animation shows how it all works.

lower work rolls with effective heat extraction. Because of the current demands on mills to process much lighter exit gauges from increased incoming hot strip thickness, much larger reductions are necessary on individual mill stands, such high reductions at a nominal width

rolling mills with regardsto better strip'ssurface qua lityand for higher productivityof the rolling mills. A compound roll with the outer layer made of high alloyed steel corresponding to the familyof alloysused for cutting tools, which iscalled HSS rolls wasdeveloped and introduced into hot strip millsin Japan in the earlyni neties.

the work roll of a rolling mill. The considered hot rolling mill consists of two hollow cylinders receiving heat in contact with the work piece and cooled by convection on its internal and external surfaces. Hsu et al. [19] considered a three dimensional inverse model for estimate the surface thermal behavior of the work Roll in hot rolling ...

Hot Strip Mill Work Rolls. We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment, milling equipment, mineral processing equipment and building materials equipment.

work roll for hot strip mill Manufacturers, Factory, Suppliers From China, We focus on generating own brand and in combination with a lot of experienced expression and first-class equipment . Our goods you worth have.

Rolls are key components in hot strip mill. Roll wear and fatigue are inevitable phenomena during hot-rolling process. Finite element (FE) analysis shows that …

Work roll in hot strip mills wear due to frictionbetween roll surface and hot strip. (Back up rolls wear as well, but under pressure with elastic deformation, the friction is much less.) The wear is uneven from one end of the barrel to the other.

The mechanical rolling conditions in hot strip mills are precisely defined by various variables, which are taken directly froth the rolling schedule (separation force, torque. speed. strip thickness) or calculated from figures of the rolling schedule and dimensions of the mill (strip reduction, roll diameter etc.). These variables allow to describe the mechanical rolling …

Integration of Automated Roll-Defect Detection Systems in the Operation of Roll Shops for Heavy Plate and Hot Strip Mills Jochen BOBBERT, Axel KLEIN, Dr. Horst TAMLER, Dr. Wolfram WEBER, ThyssenKrupp Steel AG, Duisburg Abstract. The surface of work rolls and back up rolls is worn out during hot rolling

All our Hot Strip Mill Work Rolls are made using the vertical centrifugal casting method, ensuring high in-service integrity and premium performance results. For roughing mill work rolls, we can also offer the forged grade SDSII with proven excellent performances. Hot Strip Mill Work Rolls account for a substantial part of our global output.

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.

the primary function of the conventional hot strip mill (hsm) is to reheat the semi-finished steel slabs (rolled or continuously cast) to the rolling temperatures and then to roll them thinner and longer through a series of rolling mill stands driven by large motors and finally coiling up the lengthened steel sheet for its easy handling and …

In hot rolling mills, premature failure of rolls is a major concern as it adversely affects the mill operation as well as production. Analysis of failed roll materials and actual rolling conditions in service are therefore necessary to understand the roll failure mechanism and thereby improve the service life of rolls. The hot strip mill referred here consists of two …

36 Thermal Compensation of Work Roll Grinding in Hot Strip Mills work rolls were first measured before the grinding operation. After the uniform temperature distributions along the work roll axis were achieved, the measure-ments were carried out again to obtain the work roll profiles. 5. RESULTS The results of the experiments were used to iden-

Work roll changes account for a large proportion of downtime in the operation of hot strip mills, ... The experimental results were compared with fragments of scrapped work rolls taken from the mill. Tests performed on the HSS samples did not result in appreciable surface degradation of the test sample.

Work rolls for the roughing stands of conventional HSM and Steckel mills. Microstructure SPECRA R. SPECRA R High Speed Steel Union Electric Åkers These data are indicative and can be changed at any time without prior notice ... HOT STRIP MILL WORK ROLLS. Created Date:

Attributes imparted to the strip by the hot rolled strip mill include surface quality, thickness, width, and flatness control as well as strip profile. Rolling of steel slabs in hot strip mill consists of several sub-processes and at the end of them the final product 'hot rolled coil' is …

Rolling conditions in hot strip mills and their influence onr the performance of work rolls Karl Heinrich Schröder, British Rollmakers (China) Ltd. Summary. The mechanical rolling conditions in hot strip mills are precisely defined by various variables, which are taken directly froth the rolling schedule (separation force, torque.

Hot Strip Mill Rolls. We offer work rolls for finishing mills used by blast-furnace and electric-furnace steelmakers to manufacture hot strip. Rolls for H- beam Steel Mills. We offer rolls for mills that produce H- beams steel which are widely used in …

conducted in field by Innse Cilindri on work rolls of finishing stands of hot strip mills. The correct interpretation of the eddy current signals and a good calibration of the automatic system have allowed, in many cases, a substantial optimisation of regrinding practices. Key Words: Work roll; Eddy current system; Bruise signal; Roll redressing.

The objective of this investigation was to determine the influence of work roll cooling on roll thermal behavior. The investigation has been conducted utilizing a previously developed computer model [1]. Three industrial operations were evaluated and features of an optimum configuration have been identified. The magnitude of the thermal zone near the roll surface within which the …