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Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Chapter 10, Problem 4R
In short-circuiting transfer, what type of current alloys the liquid metal at the electrode tip to be transferred by direct contact with the molten weld pool?
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uèstion 18
In 'reverse polarity' of arc welding
O A Electrode is connected to + and most of the heat is generated at the electrode
O B. Electrode is connected to - and most of the heat is generated at the workpiece
O C. Work piece is connected to + and most of the heat is generated at the workpiece
O D. Work piece/is connected to-jandimost of the heat is generated at the workpiece
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Answer by true (T) or false (F) for the folling sentences
1. Fusion welding means that the two surfaces to be joined and the filler metal are meling during welding
and then solidifying in similar menner to local casting process.
2. In oxyacetylene welding process, the welding is done using oxidizing flame only.
3. Explusive welding process produces strong joints of dissimilar materials that are not weldable by are.
4. Hot working leads to eliminating the porosity in the metal and increasing the strength and hardness.
5. Work hardening is a characteristic induced in the processing part because of the heat treatment.
esponse.
Quèstion 13
In 'reverse polarity' of arc welding
O A. Electrode is connected to + and most of the heat is generated at the electrode
B. Electrode is connected to - and most of the heat is generated at the workpiece
C. Work piece is connected to + and most of the heat is generated at the workpiece
O D. Work piece is connected to and most of the heat is generated at the workpiece
A Moving to another question will save this response.
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Chapter 10 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 10 - Why is usage of the term GWW preferable to MIG for...Ch. 10 - Using Table 10-1, answer the following: a. What...Ch. 10 - What factors must be considered when selecting...Ch. 10 - In short-circuiting transfer, what type of current...Ch. 10 - Describe the globular transfer process.Ch. 10 - In what form is metal transferred across the arc...Ch. 10 - What three conditions are required for the spray...Ch. 10 - Using Table 10-3, answer the following: a. What...Ch. 10 - Describe the current produced by the pulsed-arc...Ch. 10 - In the pulsed-arc metal transfer current cycle,...
Ch. 10 - List five advantages of the modulated current and...Ch. 10 - What is the difference between the wire melting...Ch. 10 - Using Figure 10-13, what is the approximate...Ch. 10 - Using Table 10-6, what would the amperage be for...Ch. 10 - The shielding gas selected can affect what...Ch. 10 - What may happen if the GMA welding electrode is...Ch. 10 - What effect does shortening the electrode...Ch. 10 - Describe the weld produced by a forehand welding...Ch. 10 - Describe the weld produced by a backhand welding...Ch. 10 - What components make up a GMA welding system?Ch. 10 - Why must GMA welders have a 100 duty cycle?Ch. 10 - What can happen if rollers of the wrong shape are...Ch. 10 - Where is the drive motor located in a pull-type...Ch. 10 - How is the wire-feed speed changed with a linear...Ch. 10 - What type of liner should be used for aluminum...Ch. 10 - What parts of a typical GMA welding gun can...Ch. 10 - Describe the spot welding process using a GMA...
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