Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 11, Problem 1R
What items make up a basic semiautomatic welding system?
Expert Solution & Answer
To determine
The items that make up a basic semi-automatic welding system.
Answer to Problem 1R
The equipments of semi-automatic GMA welding are power source, shielding gas supply, switch circuit, welding gun, conduit, electrode feeder, Electrode supply, power cables, shielding gas regular and shielding gas hose.
Explanation of Solution
The basic semi-automatic GMA welding installation consist the elements which are listed below:
- Power source:
A power source is required to maintain the equipment to work without any interruptions and indulgence of welder.
- Shielding gas supply:
Shielding gas supply is must to prevent the weld from oxidation.
- Shielding gas flow meter regulator:
For a semi-automatic welding machine the flow meter should be required to adjust the amount of shielding gas required for the weld.
- Shielding gas hose:
It is a basic component required to transfer the shielding gas form the cylinder to the welding gun.
- Switch circuit:
It is a circuit that contains the control of current, voltage and the travel speed of the electrode gun.
- Welding gun:
The welding gun is the basic component required to hold the electrode in a position during the welding process.
- Conduit and welding control:
Conduit is required to protect the electrode from the damage and deformation through the feeding of electrode from feeder to Gun.
- Electrode feeding unit:
Electrode should be fed with an uniform rate for better weld quality thus, an electrode feeder is required to provide the electrode by a constant rate to the weld.
- Power cables and work cables:
Power cables are required for the power supply to the machine as the current flowing through the electrode is of high amperage it requires a high current wire cables which can sustain the current of high magnitude.
Conclusion:
Thus, the equipments of semi-automatic GMA welding are power source, shielding gas supply, switch circuit, welding gun, conduit, electrode feeder, Electrode supply, power cables, shielding gas regular and shielding gas hose.
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Chapter 11 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 11 - What items make up a basic semiautomatic welding...Ch. 11 - What must be done to the shielding gas cylinder...Ch. 11 - Why is the shielding gas valve "cracked" before...Ch. 11 - What causes the electrode to bird-nest?Ch. 11 - Why must all fittings and connections be tight?Ch. 11 - What parts should be activated by depressing the...Ch. 11 - What benefit does a welding wire's cast provide?Ch. 11 - What are the advantages of using a feed roller...Ch. 11 - Why should the feed roller drag prevent the spool...Ch. 11 - Why must you always wind the wire tightly into a...
Ch. 11 - How is the amperage adjusted on a GMA welder?Ch. 11 - What effect on the welding current does increasing...Ch. 11 - Using Table 11-1, determine the amperage if 400...Ch. 11 - What happens to the weld as the electrode...Ch. 11 - What is the effect on the weld of changing the...Ch. 11 - What are the advantages of adding oxygen or CO2 to...Ch. 11 - What reactive gases are used with argon for GMA...Ch. 11 - What are the advantages of using CO2 for making...Ch. 11 - What is mill scale?Ch. 11 - What type of porosity is most often caused by mill...Ch. 11 - What should the welder watch if the view of the...Ch. 11 - When making a vertical weld and it appears that...Ch. 11 - What are the advantages of making vertical down...Ch. 11 - How can small weld beads be maintained during...Ch. 11 - How can spatter be controlled on the nozzle when...
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