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 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, …
Ferrite rolling of interstitial free steel strip in the temperature range 650-850°C can effectively reduce furnace costs and scale formation as a result of lower strip reheating temperatures. Different lubrication conditions of lubricating oil, solid lubricant and dry condition were used during ferrite rolling tests of thin interstitial free steel strip on a 2-high Hille 100 experimental ...
Many hot strip steel mills around the world are realizing the benefits of the Xtek Bemcalloy™ Pinch Rolls.The inherent lubrication property of the graphitic constituent in the Bemcalloy™ material, along with the natural resistance to adhesion of dissimilar metals, is the basis of the pickup resistance of the material.
Reducing the roll gap increases the roll pressure to p3. Gage control in multiple rolling mills is achieved through measurement of strip thickness using x-ray gage and adjusting the strip tension using feedback control system. 1.8 Rolling defects: Mill spring is a defect in which the rolled sheet is thicker than the required thickness because,
Traditional cold rolling lubricants comprise a base oil, load bearing additives and anti-oxidants. The base oil must have a suitable viscosity for the mill duty and a narrow boiling range to minimise both evaporation during use and the risk of staining during annealing of the rolled strip.
Roll Cooling Our experts can help you improve roll cooling consistency and identify / solve related problems quickly in your hot rolling mill. We provide products and services to help optimize your roll cooling process.
OilSafe® Lubrication Management Systems; ... For: Gears on Rotary Kilns, Rotary Dryers and Ball Mills. Learn More. SprayDRY52™ ... For: Tire/Support Roller Lubrication Blocks, Thrust Roller/Tire Lubrication Block. Learn More. Gearbox Oil …
The combination of roll gap cooling, roll gap lubrication and improved exit side cooling systems reduces the roll temperature. This results in a thinner oxide layer on the roll surface with less work roll peeling for consequence. Lubrication inside the roll gap minimizes friction, thereby enabling rolling force reduction of 20 % to 30 %.
Roll-gap lubrication system Hydraulic loopers (F1 to F3) Differential-tension loopers (F4 to F6) Roll quick-change equipment Laminar strip cooling Two hydraulic coilers with Automatic Step Control HOT STRIP MILL WITH "ECO" COMPONENTS In June 2013 Baosteel Zhanjiang Iron & Steel awarded us an order for the supply of a 2,250 mm hot strip mill ...
A method and apparatus for applying hot rolling mill lubricants composed of water and difficultly dispersible oil to the rolls of rolling stands used to reduce hot steel whereby the lubricant is applied only during the period when the workpiece contacts the rolls of the rolling stands. The oil is continuously circulated in a loop system to maintain it at a desired temperature range, and …
Hot rolling mills Cold rolling mills ... (AFC) systems to 4-high and 6-high rolling mills. Control connection Possibility of integration on all existing control systems using an open interface, independent of BUS and manufacturer. ... The free arrangement of the spray nozzles allows optimum roll wetting and gap lubrication with the best ...
Siemens VAI work-roll lubrication is designed to reduce roll wear and friction of the work rolls in the finishing mill stands. The application of work-roll lubrication in existing hot-strip mills leads to cost reductions (roll material, energy), improves product quality, boosts product diversity and increases mill availability. Detailed view of ...
Vertical roller mill lubriion system. vertical roller mill lubrication system astroconsultants. of grinding, ok vertical roller mill, atox raw mill, atox coal mill, atox split seal, the latest addition to s lubrication station portfolio is the new, improved, the maag cem drive is an integrated mill drive system with motor and. Design Advantages ...
Using lubricant in cold rolling and controlling the roll-wear in hot rolling are some of the ways to achieve these goals. Cold rolling is usually used to produce metal strips with superior thickness tolerances and surface quality. Effective lubrication systems are …
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.
1. lubrication, roll cooling, inter stand and skin cooling, 2. bending, shifting, prediction of roll forces and looper tension. The first set of tools are there for the surface quality. Actually, the ir goal is to avoid fini shing mill rolled in scale. In case the scale is not able to deform to the same extent as the steel, it is broken.
Diemx has developed a proprietary rolling with oil system (RWO) which has been operating successfully since 1997 on a world class seven stand hot strip mill. Improvements in surface quality, roll life, and reduced power consumption have been dramatic. Click picture to left for further details. Wet Tempering Systems
To integrate a new roll gap lubrication system into an existing hot strip mill is a challenge problem. A lubrication expert system was developed and embedded into finish rolling setup system. The reference value setup by expert system is downloaded to roll bite lubrication PLC via finish mill PLC to open oil spraying valve and regulate the oil concentration.
Applications include: Steel: Slab caster slide gates / hot mill roll force and roll balance / pickle line and welders / cold rolling mill / annealing / tin rolling / automatic gage control (AGC) hydraulics Aluminum: Cast houses / hot rolling mills Seamless Tube & Pipe: Casting / rotary furnace / hot rolling lines / heat treating Engine and Transmissions: Casting / heat-treating / …
Rolling Mill Lubrication. We have supplied the gear and bearing lubrication for the hot rolled strip mill with the highest output in the world, located in America. It requires specialist knowledge to design the inside of the tank for optimum water and air separation, especially when it comes to lubrication systems.
Achenbach WIN-SprayS ® roll cooling and lubrication system; Axial work roll displacement in four-high rolling mills; Efficient roll buffs; Hot strip trimming shears; Typical Products Achenbach Hot Rolling Mills roll aluminium sheets and coils as the starting material for all aluminium cold rolling processes respectively for end products such as:
LUBRICATION OF HOT-STRIP-MILL ROLLS 205 To avoid problems with front-end entry the oil was switched on by a signal from the main-drive motor load and switched off before the tail end had passed through the mill by similar means. In this way time was allowed for the oil to "burn on" the rolls before the next slab was ready for processing.
Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method to control the flatness of the strip in cold rolling mills. Cooling and lubricating is furthermore essential for the plateout for cold rolled strip.
Abstract. To integrate a new roll gap lubrication system into an existing hot strip mill is a challenge problem. A lubrication expert system was developed and embedded into finish rolling setup system. The reference value setup by expert system is downloaded to roll bite lubrication PLC via finish mill PLC to open oil spraying valve and ...
Inline measurement of roll spindle torque for rolling mills Transformation Monitor Measurement of % permeability of cooling steel on the ROT Width-Gauge Stereo Camera Non-contact stereoscopic camera width-gauging systems for Hot Strip Mills Work Roll Lubrication
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 ...
More high-quality output with optimized solutions for hot rolling mills. Despite the everyday challenges of heat, lots of cooling water and high-impact forces, hot rolling mills are expected to continuously increase output while maintaining and improving the quality of the finished product.
Roll Grinders CNC Proma Meagbore Machinery Proma roll grinders and cylindrical grinders are precision made to meet the Type of lubricating system – Hydrostatic dynamic system Support Roll neck diameter range mm – 90 400 350 600 option 90 400 350 700 option
Magnitogorsk Mining-Metallurgical Institute. Magnitogorsk Metallurgical Combine. Translated from Metallurg, No. 4, pp. 41–42, April, 1980
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