This document classifies manufacturing processes based on their function and level of production. It discusses several key classifications: processes that change physical properties like heat treating; casting processes that introduce molten metal into molds; joining processes that connect two materials like welding; machining processes that cut excess material like turning; and surface finishing processes that smooth surfaces like polishing. The document provides examples within each classification and briefly outlines some of the main processes within each category to transform, shape, join, cut, or finish workpieces in manufacturing.

1. Classification of
manufacturing processes
Presented by
SALUNKE M.D.
Presented to
J.S.P.M.’S
B.I.T.BARSHI

2. Introduction
 Classification of manufacturing process
 Classification based on Function of Process
 Classification based on quantity of production
 Selection of manufacturing process
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3. Classification Based On Function of
Process
 Manufacturing process used in industry
basically performed following purpose…
 Changed the physically properties of work piece.
 Change the shape and size of the work piece.
 Produced desired dimensional accuracy and
surface finish.
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4. Classification Based On Function of Process:
1) Process for changing Physical properties of
work piece.
2) Casting process
3) Primary metal working processes.
4) Shearing and Forming processes.
5) Joining processes.
6) Machining processes.
7) Surface finishing processes.
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5. Changing Physical
Properties
 Physical properties of material can be change by heat
treatment like
1) Carbonizing
2) tempering
3) Hardening
By hammering, bending and cold rolling of iron materials and
nonferrous metals a strengthening of the metal structure is changed
systematically. This kind of heat treatment is used for making the
steels hard and wear-resistant for certain purposes.
4) Annealing
The hardness for an annealing process is usually listed on the HRB
scale as a maximum value. It is a process to refine grain size,
improve strength, remove residual stress and affect the
electromagnetic properties.
5) Stress relieving
is a technique to remove or reduce the internal stresses created in
a metal. Stress relieving is usually accomplished by heating a metal
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6. Casting Process
 Casting processes basically involve the introduction of a
molten metal in to a mould cavity, where up on solidification,
the metal takes on the shape of the mould cavity.
 Simple and complicated shapes can be made from any metal
that can be melted.
 Example of cast parts : frames, structural parts, machine
components, engine blocks, valves, pipes, statues, ornamental
artefacts…..
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7. Joining Processes
 In this process; two or more metals are joint to each other. Or
repair/join the broken parts.
 The joints are may be permanent like welding OR may be
temporary like Riveting, brazing, soldering…
 Joining process are….
 Screw-Fastening
 Welding
 Riveting
 Brazing
 Soldering
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8. Machining Processes
 Machining consist of forcing cutting tool with one or more edges
through the excess materials on a work piece and removing this
excess material in the form of chip.
Knurling
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9. Surface Finishing
Processes
 Surface finishing process are used ensure a smooth surface, to improve
appearance or to provided a protective coating.
 Some of process are like honing and lapping are remove the unwanted
material, there primary aim is to produces a good surface finish.
 Surface finishing operations are as followed…
1) Polishing
2) Honing
3) buffing
4) Barrel Tumbling
5) Lapping
6) electroplating
7) Abrasive belt grinding
8) Inorganic coating
9) Anodizing
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10. Thank You
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