Advantages and Disadvantages of Die Casting

Advantages:

  • Excellent dimensional accuracy (dependent on casting material, but typically 0.1 mm for the first 2.5 cm (0.005 in. for the first inch) and 0.02 mm for each additional centimeter (0.002 in. for each additional inch).
  • Smooth cast surfaces (1–2.5 micrometres or 0.04–0.10 thou rms).
  • Thinner walls can be cast as compared to sand and permanent mold casting (approximately 0.75 mm or 0.030 in).
  • Inserts can be cast-in (such as threaded inserts, heating elements, and high strength bearing surfaces).
  • Reduces or eliminates secondary machining operations.
  • Rapid production rates.
  • Casting tensile strength as high as 415 MPa (60 ksi).
  • Castings are made as large as an 8 feet across and 30Lbs in weight. In magnesium

Disadvantages:

  • Casting weight must be between 30 grams (1 oz) and 10 kg (20 lb).
  • High initial cost.
  • Limited to high-fluidity metals.
  • A certain amount of porosity is common.
  • A large production volume is needed to make this an economical alternative to other processes
sumber : wikipedia

4 comments

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