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Identify the causes of generating blow holes and misrun in casting and also suggest remedies to avoid them.
1 Answer
written 4.7 years ago by |
Solution:
1) Blowholes:
Causess:
Excessive moisture in the sand, or when permeability of sand is low, sand grains are too fine, sand is rammed too hard, or when venting is insufficient.
Remedy:
To prevent blowholes, the moisture content in sand must be well adjusted, sand of proper grain size should …