Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

16 Questions

0 Views

SLAG INCLUSIONS Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are slag inclusions in welds?

Oxides and other nonmetallic solids found as elongated or multifaceted inclusions (correct)

Gas bubbles trapped in the weld metal

Impurities in the molten metal pool

Metallic solids that are sometimes 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 (correct)

They improve the weld quality

They have no impact on the weld

They prevent the formation of slag inclusions

What is the purpose of slag during welding?

To create a protective layer over the weld

To introduce impurities into the weld

To serve as scavengers of impurities in the molten metal pool (correct)

To increase the cooling rate of the weld

Why may repair of stray arc strike damage be difficult and costly?

It may involve grinding and probably preheating in the case of alloys Signup and view all the answers

What is one of the factors that can lead to rapid solidification of weld metal?

High-speed welding applications Signup and view all the answers

What can result from rapid solidification of weld metal?

Inadequate time for slag to float to the surface Signup and view all the answers

What is a characteristic of slag inclusions in multipass welding?

Intermittent or continuous slag lines Signup and view all the answers

What is the consequence of insufficient cleaning between weld passes in multipass welding?

Slag inclusions covered by subsequent passes Signup and view all the answers

What type of electrodes designed for out-of-position welding have a fast freezing slag system?

Flux cored electrodes Signup and view all the answers

What can result from using electrodes designed for out-of-position welding in high-speed welding applications?

Slag inclusions Signup and view all the answers

What is the consequence of using an electrode that is too large when making a root pass?

Slag becoming trapped under the root layer Signup and view all the answers

What type of NDT methods are capable of detecting below-surface discontinuities such as slag inclusions?

Nondestructive testing methods Signup and view all the answers

What is the majority of slag inclusions usually trapped below?

The surface Signup and view all the answers

What is essential to prevent the majority of slag inclusions?

Proper preparation of the groove before each bead is deposited Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers