Manufacturing processes

Manufacturing processes

1. Processing operations

   • Shaping processes
     • are operations that change the geometry of the starting material
     • Solidification processes
       • - a net shape process - starting material: heated liquid or semifluid- starting material is heated sufficiently to transform it into a liquid or highly plastic state
       • Casting (metals)
       • Molding (plastics)
     • Deformation processes
       • - a net shape process - starting material: ductile solid (commonly metal) - starting workpart is shaped by application of forces that exceed the yield strength of the material
       • Metalworking
         • Forging
         • Extrusion
     • Material removal
       • - a near net shape process - starting material: ductile or brittle solid - excess material is removed from the starting piece, revealing the desired geometry
       • Machining operations
         • Turning
         • Drilling
         • Milling
       • Traditional operations
     • Particulate processes
       • - a net shape process - starting material: consist of powders - starting materials (metal/ ceramic powders) are pressed and sintered
   • Property enhancing processes
     • Heat treatment
   • Surface processing operations

2. Assembly operations

   • are operations that join two or more components to create a new entity
   • Joining processes
     • create a permanent joint
   • Mechanical assembly
     • fastening by mechanical methods
     • Threaded fasteners
       • Screws, bolts, nuts
     • Press fitting
     • Expansion fits