16 Questions
What are slag inclusions in welds?
Oxides and other nonmetallic solids found as elongated or multifaceted inclusions
Why are stray arc strikes considered more serious?
They may create a quenched and embrittled condition in the weld zone
What is the purpose of slag during welding?
To serve as scavengers of impurities in the molten metal pool
Why may repair of stray arc strike damage be difficult and costly?
It may involve grinding and probably preheating in the case of alloys
What is one of the factors that can lead to rapid solidification of weld metal?
High-speed welding applications
What can result from rapid solidification of weld metal?
Inadequate time for slag to float to the surface
What is a characteristic of slag inclusions in multipass welding?
Intermittent or continuous slag lines
What is the consequence of insufficient cleaning between weld passes in multipass welding?
Slag inclusions covered by subsequent passes
What type of electrodes designed for out-of-position welding have a fast freezing slag system?
Flux cored electrodes
What can result from using electrodes designed for out-of-position welding in high-speed welding applications?
Slag inclusions
What is the consequence of using an electrode that is too large when making a root pass?
Slag becoming trapped under the root layer
What type of NDT methods are capable of detecting below-surface discontinuities such as slag inclusions?
Nondestructive testing methods
What is the majority of slag inclusions usually trapped below?
The surface
What is essential to prevent the majority of slag inclusions?
Proper preparation of the groove before each bead is deposited
What is the consequence of using the wrong size of electrode when making a root pass?
The arc striking the side of the groove instead of the root
What is the importance of the proper choice of electrodes for high-speed welding?
Designed for welding in the flat and horizontal positions with more fluid slag systems
Test your knowledge of welding standards with this quiz on WSS Guide WD
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
