greasing process in cold roll mill

Rolling of Metals: Process and Principles (With Diagram)

The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

SPECIFIC SOLUTIONS FOR STEEL INDUSTRY PRODUCT GUIDE …

ROLLING MILL Steel rolling requires high precision products and complete reliability. Designed for heavy loads, high speeds and/or requiring reinforced sealing, NTN-SNR products provide a tailed solution for each type of rolling mill (cold or hot). A specific processing of

Metal Coating Plant | New Zealand Steel

Cold rolled strip is delivered from the cold rolling mills to the metal coating line. The strip is cleaned to remove grease, oil and iron oxide before traveling through the annealing furnace (with a hydrogen and nitrogen atmosphere) to anneal or stress relieve to the specified strength.

Cold Rolling – UPTIME

Cold rolling is actually a process through which the steel band's cross sectional area becomes thin, by imposing hydraulic pressure through 2 sets of counter-rotating steel rolls. Each passage results in a reduction of thickness by approximately 25%. Roller mill maintenance is performed in 4 areas, namely rollers, bearings, drives and ...

Cold rolling - CONDAT

The bearing chocks of the working cylinders are subject to permanent wash out by cold rolling lubricants and are subject to heavy loads.The use of lubricants with excellent anti-wear properties and resistance to wash-out is essential. As with hot rolling, the spacing of greasing time is necessary to limit maintenance operations between each change of cylinder.

Special lubricants for metallurgical processes

Cold rolling mill In cold rolling mills, the equipment is running at significantly higher speeds and the cooling liquid is replaced by a chemically more active rolling mill emulsion. Chemical inertness and a high sealing power are all playing active roles in – from the lubricant's side – keeping the operation running.

» The value of reconditioning bearings in cold rolling mills

Refurbishment and reconditioning of bearings used in cold rolling mills can save between 55 % and 65 % on the cost of buying new bearings. SKF Industrial Services Centre, ISC, based at Steyr, Austria, was set up by the SKF group in 1998 to provide a dedicated reconditioning service for backing bearings used in the steel industry.ISC is a specialist in this …

Rolling Process: Definition, Working Principle ...

Rolling Process Definition. The rolling process is a metalworking operation in which metal strips pass through a set of rollers to reduce sheet thickness and achieve uniform thickness throughout the sheet. The sheet is deformed along the linear axis. Typically after the rolling, metal sheets go through annealing which is done under a closed environment of nitrogen.

North American Stainless hiring ZMill Cold Rolling Floater ...

To know how and when to insert the work roll into the mill per the rolling schedule Do periodic gauge referencing during the rolling process Inspect both …

Klüber - Steel Plant

Klüber - Steel Plant. Solutions for the steel industry. Speciality lubricants for highest demands. Blast Furnace. Coke Plant. Cold Roll Mill. Sinter Plant. Steel Making Process. Hot Roll Mill.

SST Tech - Steel

Hot Strip Mill (HSM): The bars from the casting process are rolled after a reheating, temperature homogenization and surface cleaning to their final dimensions in rolling mills. Pickling Line (PL): The surface of the product is cleaned from grease and scale formed during the rolling process for perfect input conditions into the cold rolling ...

Steelmaking: Cold Rolling - YouTube

Cold Rolling: training video from the Corus BCSA training pack

Acero | Interlub | The uncommon lubricant company

Rolling mills. Specialized lubricants for the most critical applications in the rolling mill & hot rolling mill processes. ... Grease with a highly refined base oil, lithium-complex thickener and an additive package that provide mechanical stability, high load support and resistance to corrosion ... Cold rolling mill bearings and winders ...

Recycle of valuable products from oily cold rolling mill ...

B. Liu etal., Recycle of valuable products from oily cold rolling mill sludge 943 ature at a rate of 10 C/min.When the furnace chamber reached the design temperature, it was held at this tem-perature for several hours to reduce iron component pow-

Steel strip processing [SubsTech]

Cold rolling in a tandem rolling mill. The rolling mill consists of 5-7 stands having four-high configuration (two large back-up rolls and two small work rolls). Annealing at a temperature 1100-1300ºF (600-700ºC) in a controlled reducing atmosphere (commonly a mixture of Hydrogen and Nitrogen ) preventing oxidation of the steel surface.

MANUFACTURING PROCESSES

Cold rollingis a rolling operation carried out at room temperature. Cold rolling is commonly conducted after hot rolling when good surface quality and low thickness tolerance are needed. Cold rolling causes material strengthening. Types of Rolling 12 Some of the steel products made in a rolling mill. Rolled Products Made of Steel

Cold Rolling / Metal Oil - DANA LUBES

Cold rolling of stainless and high carbon steels on multi-roll as well as 2 and 4 high rolling mills. Cold rolling of copper alloys with quarto roller mills. Can also be used in low pressure hydraulic systems of ferrous and non-ferrous rolling mills. Cold Rolling / Metal Oil. Density at 15°C, ASTM D1298. 0.86. Viscosity at 40°C, mm2/s, ASTM D445.

Mechanics of Cold Rolling of Thin Strip - IntechOpen

Fig. 1. Edge contact of work rolls and Slit beam deflection mode for a 4-high rolling mill 2. Roll deformation of 4-high rolling mill As symmetry of the mill about the mid-span of the rolls, the calculation process involv es one half of a roll system. Given in Fig. 1, one half of the roll barrel and the strip are divided into

Greasing Process In Cold Roll Mill - feriendorfhuisje.de

cold rolling - process overview - engineeringclicks. in the rolling process, the space setting between rollers is reduced after each consecutive load carrying/ anti wear characteristics and excellent water resistance to cold and hot water. the grease was tried out for lubrication of work roll bearings of 4 stands of roughing mill (r#2 to r#5) at hot strip mill. period of trial: 83 days.

Tandem Rolling Process :: Total Materia Article

Tandem cold rolling mills can be basically split into two groups; sheet mills if they reduce hot band to sheet gauge or tin mills if they roll the same incoming material to tinplate stock. Key advantages of the tandem rolling process include cost reduction and good improvements in productivity especially when integrated with a continuous ...

Bearings for Rolling mill Rolls – IspatGuru

Bearings for Rolling mill Rolls. Rolling mills for rolling of steel differ in many aspects with each other. The rolling mills are of different sizes and capacities. The mills roll steel materials of different cross-sections, sizes and qualities and in material conditions which are either hot or cold.

Analysis of Startup Process and Its Optimization for a Two ...

Dynamic characteristic analysis of a two-stand reversible cold rolling mill in the startup process was carried out. The delay algorithm of the interstand thickness was proposed. A new method combined with the accelerated secant and the tangent methods was established to solve the simultaneous equations. The thickness and interstand tension transition processes with …

CN203330120U - Cooling and sealing structure for roll ...

The utility model discloses a cooling and sealing structure, particularly discloses a cooling and sealing structure for a roll system of a roughing mill, and belongs to the technical field of hot rolling equipment. The cooling and sealing structure for the roll system of the roughing mill can improve the sealing effect of the roll system of the roughing mill effectively.

Rolling oil | Mobil™

Wyrol™ 12. Rolling oil additive to optimise rolling oil life & performance in aluminium cold rolling applications.Could be used as neat cutting oil. Wyrol™ HS 22. Synthetic,low staining, antiwear hydraulic oil designed for use in rolling mills where gums can form challenges in foil rolling & seperation. Wyrol™ HS 46.

(PDF) Failure Analysis of Rollers in mill stand using ...

If, for example, the maximum roll stage to reduce or eliminate the production or process temperature at the end of the rolling campaign will lag. not exceed 65°C there is normally no danger of More than 15 failure modes of rollers in mill thermal breakage during start-up, even in the case of stands are identified and FMEA was conducted for ...

Cold Rolling - NSK Bearings for Metal Making

Cold Rolling Consistent Output and Quality Cold rolling is a demanding process – not only as a result of severe mechanical and operating environment stresses, but also due to the demands for increased throughput, stringent material quality and finish, high dimensional consistency, increased energy efficiency, and maximum machine uptime.

Cold rolled sheet (roll) common defects, characteristics ...

Cold rolled sheet (roll) common defects, characteristics, and cause analysis summary! ... 1 The emulsion is not exhausted at the exit of the rolling mill, and carbonized upon heating to form spots; ... In the process of steel coil transportation, seawater or rainwater is introduced, and then cold-rolled and annealed to form a block of water ...

Cold rolling technology for carbon - ANDRITZ

6-high mill at pre-assembling Full range flatness actuators for all cold rolling mill types (9) Intermediate roll set with grease lubricated roller bearings (10) Strip blow-off system (11) Selective roll multizone cooling and emulsion system (12) Back-up roll change device . 04 05

What is Cold Rolling? (with picture)

Cold rolling can be used to change the gauge of steel sheet metal. Cold rolling is a process used in manufacturing and finishing environments to change the thickness, or gauge, of metals or glass. Used mostly in steel mills, cold rolling involves threading flattened steel into a machine that advances the material through a set of rolls.

Erdemir - Products

Cold-rolled mild flat steel, low in carbon is coated with various amount of tin and produced through electrolysis method. This type of flat steel has the thickness ranging from 0.12 to 0.60 mm, being either in roll or sheet forms.