1. MANUFACTURING PRACTICES
By
Mr.NABAL SINGH
Assistant Professor,
Department of Mechanical Engineering,,
Jagannath University, Chaksu ,Jaipur
Mail ID:- nabaliitb10@gmail.com
3. Manufacturing processes
• Manu Factus : Latin for ‘made by hand’
• Definition:
• A Well organized method of converting raw material
to end product
• End Product: Value and utility added to output
4.
5. Manufacturing a Product: General
Considerations
• Material Selection
• Processing Methods
• Final Shape and Appearance
• Dimensional and Surface Finish
• Economics of Tooling
• Design Requirements
• Safety and Environmental Concerns
9. Casting Processes
Introduction of molten metal into a mold cavity; upon
solidification, metal conforms to the shape of the cavity.
Die Casting Sand Casting
10. Forming and Shaping Processes
Bulk deformation processes that induce shape changes
by plastic deformation under forces applied by tools
and dies.
Forging
Extrusion
11. Manufacturing Processes
for Plastics
• Plastics are shipped to manufacturing plants as
pellets or powders and are melted just before the
shaping process. Polymers melt at relatively low
temperatures and are easy to handle.
• Plastics can be molded and formed, as well as
machined and joined, into many shapes with
relative ease.
18. Plastics (Polymers)
• Compared to metals, plastics have lower
density, strength, elastic modulus, and thermal
and electrical conductivity, and a higher
coefficient of thermal expansion
• The design of plastic parts should include
considerations of their low strength and
stiffness, and high thermal expansion and low
resistance to temperature.
