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Manufacturing Assignment 3: Steel Rolling Process

This document discusses the steel rolling process. It begins by explaining that rolling is a metal forming process that reduces thickness and makes it uniform by passing metal stock through rolling mills. It then discusses that steel rolling can be hot or cold depending on the temperature of the metal. The document provides details on how blooms and slabs are rolled into various intermediate products like plates, sheets, bars, and rails that are used in many manufacturing applications. It concludes by summarizing some key aspects of the steel rolling process.

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Srinivasan Sridharan
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242 views5 pages

Manufacturing Assignment 3: Steel Rolling Process

This document discusses the steel rolling process. It begins by explaining that rolling is a metal forming process that reduces thickness and makes it uniform by passing metal stock through rolling mills. It then discusses that steel rolling can be hot or cold depending on the temperature of the metal. The document provides details on how blooms and slabs are rolled into various intermediate products like plates, sheets, bars, and rails that are used in many manufacturing applications. It concludes by summarizing some key aspects of the steel rolling process.

Uploaded by

Srinivasan Sridharan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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MANUFACTURING ASSIGNMENT 3

STEEL ROLLING PROCESS

DONE BY
RAVIPRASAATH.R-1504172
VASANTH.S-1504168

ROLLING
In metalworking, rolling is a metal forming process in which metal stock is passed
through one or more pairs of rolls to reduce the thickness and to make the thickness
uniform. The concept is similar to the rolling of dough. Rolling is classified according to
the temperature of the metal rolled. If the temperature of the metal is above its
recrystallization temperature, then the process is known as hot rolling. If the
temperature of the metal is below its recrystallization temperature, the process is known
as cold rolling.

STEEL ROLLING

At a rolling mill, blooms and slabs are further rolled down to intermediate parts
such as plate, sheet, strip, coil, billets, bars and rods. Many of these products will be the
starting material for subsequent manufacturing operations such as forging, sheet metal
working, wire drawing, extrusion, and machining.
Blooms are often rolled directly into I beams, H beams, channel beams, and T
sections for structural applications. Rolled bar, of various shapes and special cross
sections, is used in the machine building industry, as well as for construction. Rails, for
the production of railroad track, are rolled directly from blooms. Plates and sheets are
rolled from slabs, and are extremely important in the production of a wide range of
manufactured items.

Plates are generally considered to be over 1/4", (6mm), in thickness. Plates are
used in heavy applications like boilers, bridges, nuclear vessels, large machines, tanks,
and ships. Sheet is used for the production of car bodies, buses, train cars, airplane
fuselages, refrigerators, washers, dryers, other household appliances, office equipment,
containers, and beverage cans, to name a few. It is important to understand the
significance of metal rolling in industry today, as well as its integration with other
manufacturing processes.

Principles of Metal Rolling


Most metal rolling operations are similar in that the work material is plastically
deformed by compressive forces between two constantly spinning rolls. These forces
act to reduce the thickness of the metal and affect its grain structure. The reduction in
thickness can be measured by the difference in thickness before and after the
reduction, this value is called the draft.
In addition to reducing the thickness of the work, the rolls also act to feed the
material as they spin in opposite directions to each other. Friction is therefore a
necessary part of the rolling operation, but too much friction can be detrimental for a
variety of reasons. It is essential that in a metal rolling process the level of friction
between the rolls and work material is controlled, lubricants can help with this. A basic
flat rolling operation is shown in figure:130, this manufacturing process is being used to
reduce the thickness of a work piece.
During a metal rolling operation, the geometric shape of the work is changed but
its volume remains essentially the same. The roll zone is the area over which the rolls
act on the material, it is here that plastic deformation of the work occurs. An important
factor in metal rolling is that due to the conservation of the volume of the material with
the reduction in thickness, the metal exiting the roll zone will be moving faster than the
metal entering the roll zone.

Rolling operation of Steel rod

Steps involving process

CONCLUTION
These are some application and working of steel rolling process.

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