L1 Specific Flashcards
What is a “V” shaped internal rupture produced during EXTRUDING when interior metal does not flow as rapidly as the surface?
Cupping
What is a forging crack/rupture produced when metal is worked at improper temps and/or reduction of section is too severe?
Burst
What is the phenomenon that results from one or more alloying elements that are not properly diffused?
Segregation
What is a generally smooth indentation on surface resulting from 2 streams of metal from different directions meeting and failing to fuse?
Cold shut
The prod method is most sensitive to cracks that are oriented..
Parallel to the line connecting the prod contact points
When is the magnet field strongest?
When the current is flowing
A yoke produced what type of field?
Longitudinal
In longitudinal magnetism, the proper term to calculate magnetizing force is what?
Ampere turns
The amount of amperage when using prods is determined by what?
The distance between the prods
When using the wet continuous method, what should the hose be doing while the current is flowing?
Shut off
The strongest magnetic field in a coil is where?
Inside edge
What type of magnetism is easiest to create in most parts?
Longitudinal
The strength of a magnetic field within a coil is determined by what 3 things?
- Current in coil
- Number of turns
- Diameter of coil
Where is the field strength strongest when inspecting a pipe using a central conductor?
Inside surface of the pipe
What method is most frequently used with mobile equipment?
Dry powder method
