Samenvatting Manufacturing Engineering and Technology

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Samenvatting - Manufacturing Engineering and Technology

  • 0.6 Selection of Manufacturing Processes

  • The different categories of manufacturing methods are:
    • Casting
    • Forming and Shaping
    • Machining
    • Joining
    • Finishing
    • Microfabrication and Nanofabrication
  • The variations of Casting processes
    Expendable pattern, expendable mold, permanent pattern, permanent mold
  • The variations of Bulk-deformation processes
    Rolling, Forging, Extrusion and drawing
  • The variations of Sheet-metal forming processes
    Shearing, Bending and drawing, forming
  • The variations of Polymer-processing processes
    Thermoplastic, Thermosets, Rapid prototyping
  • The variations of Machining an finishing processes
    Machining, Advanced Machining, Finishing
  • The variations of Joining processes
    Fusion Welding, Other welding, Fastening and bonding
  • Types of production
    • Job shops
    • Small-batch production
    • Batch production
    • Mass production
  • 0.10 Manufacturing Costs and Global Competition

  • Typically the manufacturing cost of a product represents 40%
  • The total cost of manufacturing consists of the following components
    1. Materials
    2. Tooling 
    3. Fixed (rent etc)
    4. Capital (production machinery, equipment etc)
    5. Labor 
  • Outsourcing is defined as the purchase by a company of parts and/or labor form an outside source, either from an other company or another county, in order to reduce design and manufacturing costs.
  • Engineering materials 
    metals, platics, ceramics, composites and others
  • Behavioral manufacturing properties of materials
    Structure of materials, mechanical properties, physical and chemical properties, property modification
  • 1.2 Types of Atomic bonds

  • Atoms consist of Protons Neutrons and surrounding clouds or orbits of electrons
  • Negatively charged atoms are called anion
  • Positively charged atoms are called cation
  • There are basic types of atomic attraction associated with electron transfer, called primary bonds or strong bonds. Which bonds are there:
    • Ionic bonds (low ductility, low thermal and electrical conductivity)
    • Covalent bonds (high hardness, low electrical conductivity)
    • Metallic bonds (high thermal and electrical conductivity)
  • 1.3 The Crystal Structure

  • Atoms arrange themselves into various orderly configurations, called crystals; this atomic arrangement is called crystal structure or crystalline structure.
  • The following are the three basic atomic arrangements in metals:
    • Body-Centered cubic (BCC) 
    • Face-Centered cubic (FCC)
    • Hexagonal closed-packed (HCP)
  • All three arrangements can be modified by adding atoms of some other metal or metals, knows as alloying
  • The appearance of more than one type of crystal structure in metals is known as allotropism or polymorphism.
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Voorbeelden van vragen in deze samenvatting

The different categories of manufacturing methods are:
The variations of Casting processes
The variations of Bulk-deformation processes
The variations of Sheet-metal forming processes
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