Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Question
Chapter 8, Problem 26R
To determine
Procedure of plasma gouge.
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Why the maximum discharge rate should not be exceeded?
a. Acetylene becomes unstable and could explode when compressed to high pressure
b. It may create a reaction between the flame produce and the amount gas being discharged.
c. It causes overheating on the welding
tip that will damage the work.
d. The working pressure will not stabilize and eventually produce a irregular flame.
7) Consider the following statements
regarding Laser welding:
1: Conduction mode welding is normally used
for welding thin sheets, whereas keyhole mode
welding is used for much thicker sections.
II: Vapour pressure from the hot metal helps to
keep the keyhole open during keyhole mode
laser welding.
a. Statement I is correct, and statement II is
incorrect.
b. Statement Il is correct, and statement I
is incorrect.
c. Both statements I and Il are correct.
d. Both statements I and Il are incorrect.
What the differences between from the following:
-Natural and refinery gas
-Thermal and catalytic reforming
Chapter 8 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 8 - List the types of metal that a plasma torch can be...Ch. 8 - What two charged particles exist in a plasma?Ch. 8 - What is the approximate temperature of a plasma...Ch. 8 - To prevent a manual-type torch from damage, it is...Ch. 8 - How are high-power plasma torches cooled?Ch. 8 - What is the name of the torch part made of copper...Ch. 8 - What is the name of the material that resists...Ch. 8 - What does the nozzle insulator provide to the...Ch. 8 - What are two other names that the shield is...Ch. 8 - How often should cables, control wiring, and hoses...
Ch. 8 - What may be on a coolant reservoir to indicate the...Ch. 8 - Why is the cooling water switched on and off with...Ch. 8 - Why must a filter dryer be used on the air supply...Ch. 8 - List the four common variations of the...Ch. 8 - Define standoff distance.Ch. 8 - What two terms refer to the squareness of a cut?Ch. 8 - What is the pilot arc?Ch. 8 - List five factors that can affect the kerf width.Ch. 8 - What factors affect the bevel angle left on the...Ch. 8 - List five things that are affected by changes in...Ch. 8 - What is dross?Ch. 8 - List some advantages of using a water table.Ch. 8 - Why are most hand PAC torches limited to 100...Ch. 8 - List five special safety concerns for the PAC...Ch. 8 - Describe the three techniques for piercing a plate...Ch. 8 - Prob. 26R
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