1. Explain how Jominy test results can be used to validate a particular steel grade for a specific application. What is it used for?
1. Explain how Jominy test results can be used to validate a particular steel grade for a specific application. What is it used for?
Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Larry Jeffus
Chapter27: Weldability Of Metals
Section: Chapter Questions
Problem 26R: Why are aluminum welds likely to cause distortion and cracking?
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Can someone please help me to solve all the following questions please and thank you!!! Will upvote if all are solved!
![1. Explain how Jominy test results can be used to validate a
particular steel grade for a specific application. What is it
used for?
2. Explain two reasons that powder metallurgy parts would
have an advantage over machined parts.
3. Explain two main components of cemented carbide and the
purpose of each component.
4. Why do we use coatings?
5. Name three independent weld parameters and describe how
they affect the final weld quality.
6. Explain two advantages brazing would have over bolting
components together and two advantages that a bolted joint
would have over brazing.
7. Explain why flux is used for shielded metal arc welding
(stick welding) and is not used for gas metal arc welding
(MIG).
8. Discuss two reasons why the heat-affected-zone (HAZ) is
significant in a weld? Explain why pre-heating and post-
heating are used.
9. Explain how dendritic growth in a hypoeutectic alloy can
cause microsegregation. Assume the alloy to
metals “A" and “B" and are partially soluble. Include
diagrams, as appropriate, and indicate the relative
composition of the first material to solidify.
10. What happens when you lathe a square bar?
11. How to find hardness on a Jominy graph.
12. Explain the importance of wettability and capillary action
when brazing. Name a parameter that effects each of these.
13. Explain the importance of each of the following features
of a flask used in sand casting:
a. Filters
b. Wells
made from
c. Gates
d. Risers
14. Explain why both aluminum and titanium have good
corrosion resistance.
15. Explain what the T6 designation means in 6061-T6.
Describe the heat treatment that would achieve this.
16. Give an example of a type of welding and why that
method is uniquely suited for the example given.
17. High Density Polyethylene (HDPE) and Low Density
Polyethylene (LDPE), polyethylene consist of
polyethylene, but can have different properties and
applications. Explain on the molecular level why their
properties are different. Use diagrams in your explanation.
18. On an atomic level, explain why the properties of
polystyrene and polyethylene differ. Compare the
following properties: a) stiffness, b) opacity, and c)
melting/softening point.
19. Explain why flux is used for shielded metal arc welding
(stick welding) and is not used for gas metal arc welding
(MIG). What happens if gas is not used for MIG?
20. Benefits of bolted joints?
21. What % martensite is considered ideal diameter?
22. Review Jominy curves.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F322ab9b5-8b73-42ca-a79a-5c7ee3611144%2F867930c6-dcbf-4e1b-81e2-783934f75f6a%2Fj3edagf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Explain how Jominy test results can be used to validate a
particular steel grade for a specific application. What is it
used for?
2. Explain two reasons that powder metallurgy parts would
have an advantage over machined parts.
3. Explain two main components of cemented carbide and the
purpose of each component.
4. Why do we use coatings?
5. Name three independent weld parameters and describe how
they affect the final weld quality.
6. Explain two advantages brazing would have over bolting
components together and two advantages that a bolted joint
would have over brazing.
7. Explain why flux is used for shielded metal arc welding
(stick welding) and is not used for gas metal arc welding
(MIG).
8. Discuss two reasons why the heat-affected-zone (HAZ) is
significant in a weld? Explain why pre-heating and post-
heating are used.
9. Explain how dendritic growth in a hypoeutectic alloy can
cause microsegregation. Assume the alloy to
metals “A" and “B" and are partially soluble. Include
diagrams, as appropriate, and indicate the relative
composition of the first material to solidify.
10. What happens when you lathe a square bar?
11. How to find hardness on a Jominy graph.
12. Explain the importance of wettability and capillary action
when brazing. Name a parameter that effects each of these.
13. Explain the importance of each of the following features
of a flask used in sand casting:
a. Filters
b. Wells
made from
c. Gates
d. Risers
14. Explain why both aluminum and titanium have good
corrosion resistance.
15. Explain what the T6 designation means in 6061-T6.
Describe the heat treatment that would achieve this.
16. Give an example of a type of welding and why that
method is uniquely suited for the example given.
17. High Density Polyethylene (HDPE) and Low Density
Polyethylene (LDPE), polyethylene consist of
polyethylene, but can have different properties and
applications. Explain on the molecular level why their
properties are different. Use diagrams in your explanation.
18. On an atomic level, explain why the properties of
polystyrene and polyethylene differ. Compare the
following properties: a) stiffness, b) opacity, and c)
melting/softening point.
19. Explain why flux is used for shielded metal arc welding
(stick welding) and is not used for gas metal arc welding
(MIG). What happens if gas is not used for MIG?
20. Benefits of bolted joints?
21. What % martensite is considered ideal diameter?
22. Review Jominy curves.
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