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Springback of a pressed compact refers to

  • A.the compact shrinking during the firing stage
  • B.its slight expansion after the pressure is removed
  • C.the upper punch returning to its starting position
  • D.the loose powder flowing back out of the die

Answer: B

Elastic recovery makes the part marginally larger than the die cavity, which must be allowed for in tooling design. Excessive springback is a warning that laminations or end capping may follow. Springback is measured and used as a warning as well as an allowance.

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