Incomplete Fusion

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Questions and Answers

What is incomplete fusion in welding?

  • Using welding parameters that are too high in current and/or voltage
  • Improper joint design causing inconsistencies in preparation and fit-up
  • Failure to remove rust and mill scale from the joint prior to welding
  • Failure to fuse between weld metal and fusion faces or adjoining weld beads (correct)

What is one of the causes of incomplete fusion?

  • Failure to remove rust and mill scale from the joint prior to welding
  • Using welding parameters that are too high in current and/or voltage
  • Improper joint design causing inconsistencies in preparation and fit-up
  • Improper electrode selection inhibiting electrode manipulation (correct)

What is an example of improper joint design contributing to incomplete fusion?

  • Narrow V-groove weld in a thick plate inhibiting electrode manipulation (correct)
  • Uneven root faces and bevel angles in the joint preparation
  • Failure to remove rust and mill scale from the joint prior to welding
  • Using welding parameters that are too low in current and/or voltage

What is the consequence of improper electrode manipulation in welding?

<p>Incomplete fusion between weld metal and fusion faces (D)</p> Signup and view all the answers

What does incomplete fusion in welding refer to?

<p>Failure to fuse between weld metal and fusion faces or adjoining weld beads (D)</p> Signup and view all the answers

Which factor contributes to incomplete fusion in welding by inhibiting electrode manipulation?

<p>Improper joint design with a narrow V-groove weld on a thick plate (B)</p> Signup and view all the answers

What is a possible consequence of improper welding parameters in relation to incomplete fusion?

<p>Incomplete fusion due to low current and/or voltage (A)</p> Signup and view all the answers

What is a possible cause of incomplete fusion related to electrode manipulation?

<p>Improper travel angles and travel speed that is too fast (D)</p> Signup and view all the answers

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