Classification of manufacturing process
Classification based on Function of Process
Classification based on quantity of production
Selection of manufacturing process
Casting Process
Joining Processes
Machining Processes
Surface Finishing Processes
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 metalaKhTaR kAmAl
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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.
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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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