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Disadvantages of Sand Casting

investment casting 1

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There are various disadvantages and limitations to this casting method. These are:

  1. The surface finish cannot be particularly fine.
  2. Dimensional accuracy and repeatability can be variable.
  3. Contaminated sand waste represents a disposal issue.
  4. Patterns can degrade as production scales.
  5. Cooling rates are uncontrolled, so there is often variability in microstructure anisotropy.
  6. Complex sand cores for internal spaces can be hard to handle.
  7. Non-automated production requires skilled labor.
  8. Automated production can require moderate to high costs to establish.
  9. Some processes offer low sand reusability and difficulty in restoring the sand condition.

 

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