Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 31, Problem 31R
Approximately how long would it take a 50/50 mixture of oxygen and acetylene to flash back through a 21-ft-(7.62-m) long hose?
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Chapter 31 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 31 - What is the purpose of a pressure regulator?Ch. 31 - What may result if a pressure regulator is not...Ch. 31 - Describe how a single-stage regulator operates.Ch. 31 - Is the torch pressure always the same as the...Ch. 31 - Why does the high-pressure gauge on a regulator...Ch. 31 - How does the operation of a safety release valve...Ch. 31 - Describe the difference between an argon cylinder...Ch. 31 - What is meant by regulator creep?Ch. 31 - Who can repair regulators?Ch. 31 - Why must the pressure be released from a regulator...
Ch. 31 - Why are combination welding and cutting torches...Ch. 31 - What is the advantage of using an injector-type...Ch. 31 - What should be done to the valve packing if the...Ch. 31 - What may happen to a tip seat if it is incorrectly...Ch. 31 - What can happen to a tip if it is excessively...Ch. 31 - What is the difference between a reverse flow...Ch. 31 - What are Siamese hoses?Ch. 31 - Why must the pressure be bled off hoses when work...Ch. 31 - What is the difference between a backfire and a...Ch. 31 - Why is a neutral flame the most commonly used...Ch. 31 - What properties should a good leak-detecting...Ch. 31 - Why must the oxygen cylinder valve be opened all...Ch. 31 - How long should hoses be purged?Ch. 31 - What should be done with cylinders that have...Ch. 31 - How should the spark lighter be held to light a...Ch. 31 - Once the torch is lit, why must the acetylene flow...Ch. 31 - What type of piping can be used for a manifold...Ch. 31 - What elements make up all hydrocarbons?Ch. 31 - What are the separate parts that make up an...Ch. 31 - Use Table 31-3 to determine which fuel gas...Ch. 31 - Approximately how long would it take a 50/50...Ch. 31 - Use Table 31-4 to determine which fuel gas has the...Ch. 31 - How is acetylene produced?Ch. 31 - Why is it not safe to use acetylene above 15 psig...Ch. 31 - Use Table 31-5 to determine the largest tip...Ch. 31 - Where is the highest temperature and where is the...Ch. 31 - Use Table 31-6 to determine what would be the...Ch. 31 - What are methylacetylene-propadiene fuel gases...Ch. 31 - Use Table 31-7 to determine which oxygen fuel-gas...Ch. 31 - Which fuel gas has the strongest odor and is...Ch. 31 - What is the major advantage of using propane or...Ch. 31 - Use Table 31-8 to determine which fuel gas would...Ch. 31 - What two major safety problems does hydrogen...Ch. 31 - Why should coat hangers not be used as gas welding...Ch. 31 - Explain the significance of the AWS filler metal...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Where is the highest temperature and where is the greatest heat produced in a neutral oxyacetylene flame?arrow_forwardOnce the torch is lit, why must the acetylene flow be increased until the flame stops smoking before the oxygen is turned on for adjustment?arrow_forwardWhy is a neutral flame the most commonly used oxyacetylene flame used?arrow_forward
- Is the torch pressure always the same as the working gauge pressure? Why or why not?arrow_forwardIn oxy-acetylene welding, the oxygen cylinder is usually painted in which color? Black В. Red White D. Bluearrow_forwardUsing an oxyacetylene welding to weld 20 feet long seam in a ¾ inch thick plate at a consumption rate of 12 cubic feet per foot of oxygen and 10 cubic feet per foot of acetylene. What is the total acetylene gas consumption in liters? O5777.62 O5667.72 5566.77 5776.62arrow_forward
- Choose the bestarrow_forwardGas welding equipment is bulky in nature and hence make it difficult to transport. Select one: True Falsearrow_forwardHow is the correspondence between the high temperature in the fire zone (2400 – 2600K) and the temperature at the exit from the combustion chamber (1400 - 1800K) achieved? 3.arrow_forward
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