greasing process in cold roll mill

Cold rolling mill | SKF

Cold rolling mills are under pressure to produce more, higherquality steel. Equipment needs to cope with demands of greater dimensional accuracy, improved surface quality, higher steel grades and output speed. All this while overcoming the daily challenges of high precision, high loads, high speeds and aggressive coolants.

Products thyssenkrupp

In addition it offers excellent surface quality, extremely uniform material properties, tailored microstructures, outstanding forming properties even in highstrength grades, and batch sizes matched to customer needs. This means our precision steel strip is perfect for direct processing as well as for further processing in the cold rolling mill.

Rolling Process SlideShare

Nov 16, 2017· • The inner and outer races of ball and roller bearings, steel tyres for railway wheel are some such applications. • These rings are made by a special rolling process called ring rolling. 16. Cantilever mill roll Tube mill roll Universal roll Ring rolls •Ring rolls are used for tube rolling, ring rolling.

Roll Cooling | Lechler

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 ...

Rolling of Metals

Rolled Metal Characteristics • Residual stresses • Dimensional tolerances for coldrolled sheet thicknesses +/ mm to mm ( to inch) • Flatness tolerances to within +/ 15 mm/m (3/16 inch/foot) for cold rolling, +/ 55 mm/m (5/8 inch/foot) for hot rolling • Hot rolling and sand casting produce similar ranges for

Some aspects on lubrication and roll wear in rolling mills

better process control Today, cold and hot strip mills around the globe are continuously looking for ways to increase their productivity, save energy, lower their overall costs and improve the final quality of their products. Using lubricant in cold rolling and controlling the rollwear in hot rolling are some of the ways to achieve these goals.

The regrind process for tube mill tooling Part I

Although most tube and pipe producers don't get too involved in the regrind process, it is crucial—reconditioning roll tooling can extend its useful life by 15 or 20 times. The regrind process reduces the producer's overall outofpocket tooling expenses, while helping to .

ROLLING FLAT AND SHAPED WIRE

than larger roll diameters in a given rolling process. In strip rolling mills, rolls with small diameters are used to reduce forces. As these small rolls tend to bend, backup rolls are used for support (see Fig. 3). In wire mills, the separating forces are lower due to smaller width of the rolled material and support rolls are usually not found.

Cold Rolling/Process Line | Steel Plants | Business POSCO EC

The process is used to produce coldrolled plates and BPs (Black Plates) by producing, at first, full hard material through pickling and rolling in the PCM (Pickling and Cold Rolling). They are heated to a certain temperature, then cold rolling is done, any stress removing and the required ductility granted.

Optimization of a Cold Rolling Mill

strip will handle the tons of pressure and tensions of the high speed rolling process. Table I summarizes the typical thicknesses and rolling speeds for each mill type. Not surprisingly, as the material gets thinner, the speeds increase dramatically. Hot Roughing Mill Hot Finish Mill Cold Rolling Mill Maximum Thickness > 400 mm 2050 mm 320 mm ...

Mechanics of Cold Rolling of Thin Strip IntechOpen

Fig. 1. Edge contact of work rolls and Slit beam deflection mode for a 4high rolling mill 2. Roll deformation of 4high rolling mill As symmetry of the mill about the midspan 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

Introduction to Rolling Process Assets

rolled products from one or similar group of input materials is called a rolling mill or rolling plant. Rolling process can be classified based on various conditions/methods employed in rolling. These are: (i) Temperature of the material thus we can have hot rolling (temperature above the recrystallization temperature), warm rolling and cold ...

Types of Lubricants Used in Roll Forming Equipment

The following types of grease are used in roll forming equipment: • EP 2 grease is used for lubricating bearings. It is fortified with extremepressure additives. This grease can handle heavy, suddenly applied (shock) loads in bearing applications. • Hightemperature grease should be used in weld boxes, and other equipment that is subjected ...

A brief history of metal rolling for sheet and plate ...

A brief history of metal rolling for sheet and plate products. On the first day of our Aluminium Rolling Technology Course I run a session entitled "Machinery and Process Overview". Part of this covers the history of metal rolling from the first known drawings of a mill to the stateoftheart rolling .

Salem Steel Plant Industrial Training Report

Jan 06, 2018· The plant is facilitated with Hot Rolling Mill which can roll both stainless carbon steels the mill caters mainly to the input needs of stainless steel coils for the cold rolling mills. Special grades of carbon steels other than structural steels are also rolled from the facility includes weathering steels, high strength low alloy steels ...

SAIL SSP IPT report by srm univ SlideShare

Jun 29, 2014· SAIL SALEM STEEL PLANT SRM UNIVERSITY PROCESS FLOW: HOT ROLLING MILL 1. Reheating furnace 2. Descaler 3. Edger 4. Roughing mill 5. Crop shear 6. Coiler furnace 7. Steckel mill 8. Laminar cooling 9. Pinch roll 10. Down coiler CRM: COLD ROLL MILL Input a) Hot rolled stainless steel coils from to ssp. 19 20.

Roll neck bearings for rolling mill JTEKT

for rolling mills, especially in the process of hot rolling, are often used under severe conditions, high temperature and possibility of intrusion of ... Lubrication: Grease (water content ratio, 30%) Cold strip mill work roll (open type) Cold strip mill work roll (sealed type) No flaking Hardly any indication of rust