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Doctors Medicines MCQs Q&A

  1. Combined pattern
  2. Loose piece pattern
  3. Sweep pattern
  4. Match plate pattern
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1 Answers

Option 4 : Match plate pattern

Explanation:

Patterns

  • A pattern is the replica of the casting to be formed with some modifications. These modifications are in the form of allowances.
  • Patterns are of great variety because of their different designs, constructions, and methods of use. More commonly used types are
    • Solid/Single-piece pattern
    • Two-piece/Split pattern
    • Multi-piece pattern
    • Sweep pattern
    • Segmental pattern
    • Skeleton pattern
    • Shell pattern
    • Gated pattern
    • Loose piece pattern
    • Match plate pattern

Match plate pattern:

  • Patterns are made in two pieces, one piece mounted on one side and the other on the other side of the plate called match plate
  • The plate may carry one or group of patterns mounted on match plate
  • Along with the pattern, gates and runners are also attached
  • Produces accurate castings at faster rates
  • One advantage of using a match plate is that several patterns can be moulded in the single flask, thus saving much time and labour.
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