BuyFind

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
Publisher: Cengage Learning
ISBN: 9781305494695
BuyFind

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
Publisher: Cengage Learning
ISBN: 9781305494695

Solutions

Chapter
Section
Chapter 30, Problem 1R
Textbook Problem

What protects the molten SAW pool from the atmosphere?

Expert Solution
To determine

The methodused for protecting molten SAW pool from the atmosphere.

Explanation of Solution

SAW stands for Submerged Arc Welding. It is a type of welding process which is used for thejoining of similar as well as dissimilar metals.In SAW, the arc is produced between the electrode and workpiece to be joined. The heat produced from this arc is used for the fusion of these metals.The fusion forms a molten pool. This molten pool is protected from the atmosphere by using a thick layer of flux or slag. The molten flux or slag is formed by the granular fluxing.

This slag covers the spark, radiation of arc and fumes which are produced duringthe welding process. It also prevents the molten metal to react with the contaminants of air, and hence gives a good quality of weld. Submerged Arc

Welding is used in horizontal welding position. It has a high penetrating power. This high power reduces the amount of filler metal used in the welding process. It has high amount of deposition rate. It possesses a better quality of weld.

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Chapter 30 Solutions

Welding: Principles and Applications (MindTap Course List)
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Ch. 30 - What must be done with SA fluxes to prevent...Ch. 30 - Why does the welder not have to wear a welding...Ch. 30 - What happens to the unfused SA welding flux?Ch. 30 - Why is some form of mechanical guidance required...Ch. 30 - List the common methods used to start the SA arc.Ch. 30 - Why would handheld SA welding be used?Ch. 30 - What special characteristics must ES welding slags...Ch. 30 - What heats the ES welding flux?Ch. 30 - How is an ES weld started?Ch. 30 - Why do ES welds have large grain sizes?Ch. 30 - List the advantages of ES welding.Ch. 30 - What is the major difference between ESW and EGW?Ch. 30 - What generates the heat for fusion in resistance...Ch. 30 - What can be used to produce the force needed to...Ch. 30 - What are the basic resistance welding processes?Ch. 30 - What steps can be included in RSW?Ch. 30 - What are the three types of spot welding machines...Ch. 30 - What are some of the uses for a portable spot...Ch. 30 - How is seam welding similar to spot welding?Ch. 30 - What is the most common joint for seam welds?Ch. 30 - What is RSEW-HF used for?Ch. 30 - What metals are readily welded by the RPW process?Ch. 30 - Why is FW not usually cost-effective for short...Ch. 30 - What is the main difference between upset welding...Ch. 30 - What unusual metal combination can be welded using...Ch. 30 - What are the characteristics of an EB weld?Ch. 30 - To make an EB weld, what is the least amount of...Ch. 30 - How is the beam focus changed in the EB welding...Ch. 30 - How can a misaligned seam be tracked automatically...Ch. 30 - What types of welds are most commonly made with...Ch. 30 - What equipment is needed to make US welds?Ch. 30 - What are the typical applications for US welding?Ch. 30 - List the steps of the inertia welding process.Ch. 30 - Referring to Table 30-1, what dissimilar metals...Ch. 30 - What difficult metals can be welded with a laser?Ch. 30 - How is the plasma arc stiffened?Ch. 30 - How does stud welding work?Ch. 30 - Why is THSP known as a cold buildup process?Ch. 30 - Which thermal spray process can be used to apply...Ch. 30 - Why should thermal spray coats be applied as thin...Ch. 30 - What is the advantage of using an inert gas for...Ch. 30 - What causes the coalescence during a cold weld?Ch. 30 - Why is thermite welding used so extensively for...Ch. 30 - How can rail ends be secured for thermite welding?Ch. 30 - Why must thermite welding supplies and equipment...Ch. 30 - What types of wear can hardfacing protect against?Ch. 30 - What base metals are used for most hardfacing...Ch. 30 - What are the advantages of oxyacetylene flame...Ch. 30 - Why should there be as little dilution as possible...Ch. 30 - How can wear provide a self-sharpening effect on...Ch. 30 - What hardfacing alloy is best applied with the gas...

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