IET 170 test 2 Exam Questions AND Correct Answers
How are welding electrodes classified? - ✔✔There is a
four- five digit system adopt by the american welding
society based on coating, thickness, electrode
composition, electrode diameter, current type, and
polarity
How are welding processes identified by the American
welding society? - ✔✔Flame, arc, resistance, solid-state,
unique
In what way is the weld-pool segment of a fusion weld
like a small metal casting? - ✔✔You take a solid you add
heat put it into a cavity and let it harden
In what ways might welding create geometric notches
in a welded? - ✔✔Surface tension can spread out or
build up if the filler and base are at two different temps
Most common and versatile casting type? - ✔✔Sand
, What are disadvantages of expendable mold processes?
- ✔✔Have to make a new mold each time, have to make
sure sand is still usable (not dirty/contaminated)
What are some attractive features of resistance welding
when viewed from a manufacturing stand point? -
✔✔Rapid, can be fully automated, conserve material,
minimal distortion, no skill required, dis similar metals
can be used, high degree of reliability and re product
ability
What are some of the defects or problems that can
occur in the molten metal region of a fusion weld -
✔✔Cracks, shrinkage, oxidizes quickly and can develop
a hole
What are some of the difficulties or limitations
encountered in heat-treating of large complex
structures after welding? - ✔✔You have to figure a way
to uniformly heat the structure
How are welding electrodes classified? - ✔✔There is a
four- five digit system adopt by the american welding
society based on coating, thickness, electrode
composition, electrode diameter, current type, and
polarity
How are welding processes identified by the American
welding society? - ✔✔Flame, arc, resistance, solid-state,
unique
In what way is the weld-pool segment of a fusion weld
like a small metal casting? - ✔✔You take a solid you add
heat put it into a cavity and let it harden
In what ways might welding create geometric notches
in a welded? - ✔✔Surface tension can spread out or
build up if the filler and base are at two different temps
Most common and versatile casting type? - ✔✔Sand
, What are disadvantages of expendable mold processes?
- ✔✔Have to make a new mold each time, have to make
sure sand is still usable (not dirty/contaminated)
What are some attractive features of resistance welding
when viewed from a manufacturing stand point? -
✔✔Rapid, can be fully automated, conserve material,
minimal distortion, no skill required, dis similar metals
can be used, high degree of reliability and re product
ability
What are some of the defects or problems that can
occur in the molten metal region of a fusion weld -
✔✔Cracks, shrinkage, oxidizes quickly and can develop
a hole
What are some of the difficulties or limitations
encountered in heat-treating of large complex
structures after welding? - ✔✔You have to figure a way
to uniformly heat the structure
