IET 170 Test 2 Questions and Answers Latest Update 2025-2026
What types of design features favor manufacture as a joined assembly? - Answers Large size
products, products with high degree of shape complexity, or products with a wide variation in
required properties
What is welding? - Answers The permanent joining of two base materials using heat and
pressure
What conditions are required to produce an ideal metallurging bond? - Answers Base metals
identical, exact amount of heat and pressure
What are some of the ways in which welding processes compensate for in the inability to meet
the conditions of an ideal bond? - Answers Clean surface, pick a different type of metal for the
filler, pre and post heat the materials as well as understand physics and chemistry
What are some possible problems associated with the high temps that are commonly used in
welding? - Answers You need a heat source higher than the melting temp of the alloy but after
too much heat you can develop cracks, cavities, incomplete fusion, incomplete penetration,
unacceptable shapes, splatter, and undesirable metallurgic changes
What the three primary aspects required to produce a high quality weld? - Answers Heat
pressure and protection
How are welding processes identified by the American welding society? - Answers Flame, arc,
resistance, solid-state, unique
In what way is the weld-pool segment of a fusion weld like a small metal casting? - Answers You
take a solid you add heat put it into a cavity and let it harden
Why is it possible for the fusion zone to have a chemistry that is different from the filler metal? -
Answers If you use too high of a heat you will offset the decridation of the base material with
the filler material
Why is it uncommon for the selected filler metal to have a chemical composition that is
different from the metal being welded? - Answers If you use too high of a heat you will offset the
decridation of the base material with the filler material
What are some of the defects or problems that can occur in the molten metal region of a fusion
weld - Answers Cracks, shrinkage, oxidizes quickly and can develop a hole
Why can then resulting material properties vary widely within welding heat affected zones? -
Answers Temperature and duration widely within location
Why do most welding failures occurs in the heat effected zone? - Answers the parent material
has not melted but hasn't been subjected to elevated temperatures for a brief period of time
What types of design features favor manufacture as a joined assembly? - Answers Large size
products, products with high degree of shape complexity, or products with a wide variation in
required properties
What is welding? - Answers The permanent joining of two base materials using heat and
pressure
What conditions are required to produce an ideal metallurging bond? - Answers Base metals
identical, exact amount of heat and pressure
What are some of the ways in which welding processes compensate for in the inability to meet
the conditions of an ideal bond? - Answers Clean surface, pick a different type of metal for the
filler, pre and post heat the materials as well as understand physics and chemistry
What are some possible problems associated with the high temps that are commonly used in
welding? - Answers You need a heat source higher than the melting temp of the alloy but after
too much heat you can develop cracks, cavities, incomplete fusion, incomplete penetration,
unacceptable shapes, splatter, and undesirable metallurgic changes
What the three primary aspects required to produce a high quality weld? - Answers Heat
pressure and protection
How are welding processes identified by the American welding society? - Answers Flame, arc,
resistance, solid-state, unique
In what way is the weld-pool segment of a fusion weld like a small metal casting? - Answers You
take a solid you add heat put it into a cavity and let it harden
Why is it possible for the fusion zone to have a chemistry that is different from the filler metal? -
Answers If you use too high of a heat you will offset the decridation of the base material with
the filler material
Why is it uncommon for the selected filler metal to have a chemical composition that is
different from the metal being welded? - Answers If you use too high of a heat you will offset the
decridation of the base material with the filler material
What are some of the defects or problems that can occur in the molten metal region of a fusion
weld - Answers Cracks, shrinkage, oxidizes quickly and can develop a hole
Why can then resulting material properties vary widely within welding heat affected zones? -
Answers Temperature and duration widely within location
Why do most welding failures occurs in the heat effected zone? - Answers the parent material
has not melted but hasn't been subjected to elevated temperatures for a brief period of time
