Ch' 8: Processing Materials

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Ch. 8 Processing Materials
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• Text pages 208 - 245

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Industrial Materials
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• Wood
• Hardwood, softwood manufactured board
• Metal
• Ferrous Nonferrous
• Ceramics
• From clay or inorganic materials, plaster,
  cement, limestone glass
• Plastic
• Thermoplastic Thermoset plastics

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4 Ways of Processing Materials
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• Forming casting, blow molding, vacuum forming
• Separatingshearing, sawing, drilling, shaping
• Combing fastening, gluing, composites
• Conditioning firing, heat treating, magnetizing

4
Forming Processes
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• Casting made from molds
• Pressing material is pressed into mold
• Forging metal is heated and pressed
• Extruding softened material is heated and
  squeezed through opening
• Blow Molding air blows softened plastic into
  molds (plastic bottle)
• Vacuum Forming a vacuum draws heated and
  softened plastic over a product (blister
  packaging)

5
Conditioning Process
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• Heat Treating hardening, tempering annealing
• Mechanical Conditioning hammering a piece of
  metal
• Chemical Conditioning mixing chemicals
• Magnetize making a magnet from a piece of steel
  by lining up molecules

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Properties of Materials
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• Mechanical
• Elasticity, Plasticity, Brittleness, Ductility,
  Hardness, Toughness, Strength.
• Optical
• Clarity, Reflectivity
• Thermal
• Conduction, Insulation
• Electrical
• Conduction, Magnetism, Insulation