What you can expect from our hot rolling mills are high productivity and cost-effectiveness Depending on your final products and production volume, we develop custom solutions - wherever you are in the world These range from complete new plants to modernizations and service schemes for existing equipment As a system supplier, we offer you .
Abstract 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 wear resistance and extend the service life of rolls The hot strip mill referred here .
Korean, Japanese, and Swiss HOT ROLLING MILL FOR CHANNELS, ANGLES & FLAT BAR Manufacturer: Korean, Japanese, and Swiss General Specifications: Billet Length: 18m - 48 m Product Capacity: 35 - 40 Ton/Hr Angle 50x50x4-6t Angle 65x65x6-8t Angle 75x75x6-9t (With new rolls Angle 90-100, channel 3"-6" Flat Bar can be manufactured.
Whether in the conventional hot strip mill, the CSP facility or in the Steckel rolling mill – the grinding of work and backup rolls with or without in chocks is nowadays state-of-the-art technology for WaldrichSiegen grinding machin Especially the turning of large workpieces in the machine requires tremendous center heights
HOT STRIP MILL — HIGHEST PERFORMANCE FOR NEW AND EXISTING STEEL MILLS The demand for hot rolled strip is growing in multiple ways To remain competitive, new and existing mills must meet this challenge in the best possible way The production of hot strip is a ,
Jan 14, 2017· For rolling of hot strip, the slabs are heated initially at 1100 deg C to 1300 deg C The temperature in the last finishing stand of the hot strip mill varies from 700 deg C to 900 deg C It is always to be above the upper critical temperature to produce uniform equiaxed ferrite grains
Hot Rolled Steel The hot strip mill is designed to produce consistent surface quality, uniform mechanical properties, and consistent thickness and crown Walking beam furnaces minimize surface damage during slab reheating Scale breakers remove heavy furnace scale and provide
Improve operations, increase mill throughput and take preemptive corrective action with real time process control data from Thermo Scientific Gauges for Hot Strip Mills Hot rolling mills need reliable, repeatable process control data to identify operating issues, ensure product uniformity and incr
the effects of width spread in the roll bite as well as creep deformation between the stands Effective width-deviation compensation using tension control is limited to low-frequency width deviations By default, the strip width in a hot-strip mill is deter-mined by edging and rolling the strip in the roughing mill
SMS SIEMAG Hot Strip Mills 10 The drum-type shear installed between the roughing and finishing mills of a hot strip mill crops the trans-fer bar at its head and tail In special applications, the drum-type shear also serves to divide transfer bars and finished plat Based on the experience gained from more than 60 drum-type shears built so far.
Jan 01, 1977· Chemical passivation and possibl y oi l ing the strip prior to coiling are the last process stages for continuous hot dip galvanizing plants 22 23 ~ 21 I / ~ 17 24 Pulling bridle roll unit No 3 25 Deflector roll No 5 26 Smothing stand 27 Stretch leveller with pulling bridle roll unit 28 Strip cooling equipment 29 Steering roll No 2 30 .
Keywords: Rollers, Failure mode Effect Analysis Introduction In rolling mill operation a four roll high stand intermediate mill, two-stand pre finishing mill stand tandem mills including two work rolls and two and a ten-stand rod finishing millIn this study more back-up rolls are used to decrease force and power of than fifteen failure modes .
The sheet can whip/hit into the roll surface and mark it As a result, the following coil produced through the hot strip mill will have these bruises on the head end If the marks on the work rolls are light, the defect only bruises the next coils surface and eventually wears off the rolls ,
US3350904A US426929A US42692965A US3350904A US 3350904 A US3350904 A US 3350904A US 426929 A US426929 A US 426929A US 42692965 A US42692965 A US 42692965A US 3350904 A US3350904 A US 3350904A Authority US United States Prior art keywords deflector roll strip pass line shearing assembly Prior art date 1965-01-21 Legal status (The legal status is an assumption and is ,
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 .
Secondary scale on hot strip and the impact on wear is another issue Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later K H Schröder July 2003 K H Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS
Roll stack deflection is an important issue in the determination of profile and flatness of a strip rolled in hot strip mill A simple roll deflection model has been developed to predict the deflection of the finishing stands of a hot strip mill The roll deflection model indicates the effect of ,
Flexibility to meet specific customer needs Union Electric Åkers has been in the business of making Narrow Strip Mill Rolls for decad During this time, we have established methods to manufacture customized rolls for specific customer needs, no matter what they may be We produce 2-high, 4-high, 6-high, and other mill configurations for cold and hot rolling of strip, and wire made from .
A deflector roll for a strip mill is divided axially into sections to be able to measure the distribution of the strip tension across the strip width To avoid transmitting the measuring signals from , and therefore the design of deflector roll shown in FIG 1 may be used in hot rolling mills as well as cold rolling mills
One of such hot- rolling sheet mill shops is operated at Hoesch Hohenlimburg/GERMANY (Figure 3) The narrow strip down coiler installed at this plant has following characteristics: – 3 wrapper-roll type Hoesch Hohenlimburg/GERMANY Max/Min strip width, [mm] 715/150 Max/Min strip thickness, [mm] 17/1 Max hot yield stress, [N/mm²] 1000
Hot Strip Mill Roll INTRODUCTION Recently, coiler pinch rolls have become more recognized as a critical component of the hot strip mill Once considered a commodity product, pinch rolls have gained increased attention as hot strip mill productivity and the demand for ,
Apr 12, 2017· Deflector rolls are used as support rolls for the metal sheet passing on it In cold rolling mills, the wrap angle (contact angle of sheet over the roll) hel.
Hot strip mills began to apply the roll lubrication technology Past studies reveal that roll lubrication can reduce the mill separating force/torque5 and the tertiary scale thickness6 For a 4-high hot rolling mill, roll lubrication occurs in two zones, ie, the contact zone between
A deflector roll for a strip mill is divided axially into sections to be able to measure the distribution of the strip tension across the strip width To avoid transmitting the measuring signals from movable parts, the sections of the deflector roll are supported by rollers journalled in stationary holders, the force-measuring transducers being built into the holders
Profile of the hot rolled strip (it is very important to know , are created between the deflector roll and the coiler, the winding is not flat, and one or more peripheral bumps (narrow) , when the mill has become cold, several strips must be rolled before the mill gets warm again Thus, the .
Deflector Rolls For Rolling Mil Back by vast industrial experience and expertise, we pioneer in manufacturing of Deflector Roll For Rolling Mill PlantThe deflector Rolls that are manufactured by us are appreiciated by rolling mill globally for their high efficiency, reliability and various other featur we ensure to use raw material which are supplied by most trusted sources, The raw .
Work roll in hot strip mills wear due to friction between 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 We
art solutions for controlling the strip tension are so-called looper rolls (cf Choi et al, 2007b; Price, 1973) located between the mill stands as shown in Fig 1 The idea of operating hot-rolling mills without loopers has been analyzed by Katori et al (1999); Kim et al (2005); and Li and Janabi-Shari (2009) However, looper-
HSS rolls, often installed in the earlier stands of hot strip mills, provide improved wear resistance along with a better surface roughing resistance However, HSS are rolls more sensitive during operation and require a higher grade of attention with regard to roll cooling than High-Cr rolls HSS rolls need an adequate mill operating environment
The Hot Strip Mill represents the most productive solution for flat rolled products It provides the highest level of productivity together with a large product mix and outstanding quality Yearly productivity of Hot Strip Mills can vary from 2 to 6 Mtpy, depending on the configuration that is selected
We have set up a team with hundreds of technical engineers to resolve a series of problems during project consultation, on-site surveys, sample analysis, program design, installation, commissioning and maintenance guidance.