General Characteristics of Fusion Welding
Welding, Brazing & Soldering
PRODUCTS & DEFECTS
FORGING OPERATIONS &
HOT & COLD ROLLING
Hot Rolling The starting material is cast
ingot, which is broken by hot rolling into
blooms, billets and slabs, which are further
hot rolled into
The initial breaking down of an ingot or of a continuously cast slab is done by
hot rolling. A cast structure includes coarse and non-uniform grains. This
structure is usually brittle and may contain porosities. Hot rolling converts the
FIGURE 8.1 Examples of cutting processes.
FIGURE 8.2 Schematic illustration of a two-dimensional cutting process (also
called orthogonal cutting).
Chips Produced in Met
NOTE: This book contains the reference material for the entire syllabus; However
Students are required to grasp the basic- principles, figures and application part.
Press: is a machine-tool, which is used in sheet metal working in operations of pressing type such as
blank-cutting, drawing, bending, squeezing e.t.c.It operates on either: mechanical, hydraulic, pneumatic
or electrical means.
Fabrication of Microelectronic Devices
IC Technology is the foundation for all modern
products e.g. computers, wrist watches, home
appliances, telecommunications, automotive
controls, robotics, space applications, etc.
A chip is a small piec
Introduction to Machine tools and manufacturing Processes:
Idea on Mfg. Processes: Manufacturing is a core area which is required in all fields in our day to day life.
Amongst the various processes in manufacturing that we know, machine-tools ar
Examples of Parts Made by Advanced
Advanced Machining Processes and
Figure 26.1 Examples of parts made by advanced machining processes. These parts are made by
advanced machining processes and would be difficult
The objective is to give an overall idea of Manufacturing and make students knowledgeable about the basic
FUNDAMENTALS OF METAL
FORMABILITY & WORKABILITY OF
Formability is used for sheet forming
processes such as bending, stamping and
deep drawing in which the forces applied
are primarily tensile.
Workability is applied to bulk deformation
Casting since about 4000 BC
Ancient Greece; bronze
statue casting circa 450BC
Iron works in early Europe,
e.g. cast iron cannons from
England circa 1543
High Temperature Alloy,
Rough Surface Fini
It is a manufacturing process, wherein metal is melted and then poured into the required
cavity to get the required shape.
Foundary: The shop/ area where casting activity is done.
Pattern: It is the replica of the requ
Introduction to Manufacturing and Production. The need of manufacturing. Overview of different processes
involved: such as mining, Casting, forming, machining, fabrication, sheet metal, powder ma
Introduction to Fabrication processes:
Fabrication is another most important process. It supports manufacturing by joining two or more parts. It
can be taken into the third category or third level, since to fabricate we need to have the
Casting Defects/ Remedies
The defects can be classified under broad categories as:
MOULDING MATERIAL Defects
POURING METAL Defects
I. ) Gas Defects:
General Characteristics of Abrasive Machining
Processes and Machines
Abrasive Machining and Finishing Operations
Flat surfaces on most materials; production rate depends on table size and