Difference between revisions of "AY Honors/Welding/Answer Key 2"

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< AY Honors‎ | WeldingAY Honors/Welding/Answer Key 2
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{{Honor Master|honor={{#titleparts:{{PAGENAME}}|1|3}}|master=Technician}}
 
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==Qualified welding instructor required.== <!--T:4-->
 
==Qualified welding instructor required.== <!--T:4-->
 
The Welding Honor is perhaps of all the AY honors, the one with the greatest potential to cause injury. If done wrong you can also create unsafe equipment (see requirement note at end) '''''Do not attempt to teach yourself how to weld.'''''  An experienced instructor is absolutely required for this honor.
 
The Welding Honor is perhaps of all the AY honors, the one with the greatest potential to cause injury. If done wrong you can also create unsafe equipment (see requirement note at end) '''''Do not attempt to teach yourself how to weld.'''''  An experienced instructor is absolutely required for this honor.
  
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==1. Successfully complete a minimum of three hours of classroom instruction.*== <!--T:5-->
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<!-- 1. Successfully complete a minimum of three hours of classroom instruction.* -->
  
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==2. Identify the following:== <!--T:6-->
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<!-- 2. Identify the following: -->
  
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===a. Welding hood=== <!--T:7-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2a}} <!--T:7-->
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===b. GMAW welding wire=== <!--T:8-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2b}} <!--T:8-->
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===c. SMAW power supply=== <!--T:9-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2c}} <!--T:9-->
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===d. Welding gas regulator=== <!--T:10-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2d}} <!--T:10-->
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===e. GMAW welding torch=== <!--T:11-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2e}} <!--T:11-->
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===f. 220-volt electrical outlet=== <!--T:12-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2f}} <!--T:12-->
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===g. PAC torch=== <!--T:13-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2g}} <!--T:13-->
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==3. Explain the following terms:== <!--T:14-->
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<!-- 3. Explain the following terms: -->
  
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===a. Fusion welding=== <!--T:15-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=3a}} <!--T:15-->
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===b. Electrode=== <!--T:16-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=3b}} <!--T:16-->
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===c. Oxidation=== <!--T:17-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=3c}} <!--T:17-->
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===d. Slag=== <!--T:18-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=3d}} <!--T:18-->
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===e. Alloy=== <!--T:19-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=3e}} <!--T:19-->
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==4. Select and describe one fusion welding process.== <!--T:20-->
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<!-- 4. Select and describe one fusion welding process. -->
  
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===a. How is heat generated?=== <!--T:21-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=4a}} <!--T:21-->
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===b. Why is filler metal added?=== <!--T:22-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=4b}} <!--T:22-->
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===c. Describe how the molten metal is protected from oxidation.=== <!--T:23-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=4c}} <!--T:23-->
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==5. Name at least one thermal and one mechanical cutting process.== <!--T:24-->
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<!-- 5. Name at least one thermal and one mechanical cutting process. -->
  
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===a. Describe how each one works.=== <!--T:25-->
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===b. Discuss relative advantages and limitations of each.=== <!--T:26-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=5b}} <!--T:26-->
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==6. Demonstrate a knowledge of risks and hazards associated with welding and cutting, and the steps to prevent or reduce them.== <!--T:27-->
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<!-- 6. Demonstrate a knowledge of risks and hazards associated with welding and cutting, and the steps to prevent or reduce them. -->
  
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===a. Electric current=== <!--T:28-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=6a}} <!--T:28-->
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===b. High temperatures=== <!--T:29-->
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===c. Ultraviolet radiation=== <!--T:30-->
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===d. Toxic fumes=== <!--T:31-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=6d}} <!--T:31-->
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===e. Moving machinery/blades=== <!--T:32-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=6e}} <!--T:32-->
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===f. High-pressure gases=== <!--T:33-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=6f}} <!--T:33-->
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==7. Describe the safety gear required for various fusion welding and cutting processes.== <!--T:34-->
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===a. Head/eye protection=== <!--T:35-->
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===b. Clothing=== <!--T:36-->
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===c. Gloves=== <!--T:37-->
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===d. Hearing=== <!--T:38-->
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===e. Filtration/ventilation=== <!--T:39-->
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{{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=7e}} <!--T:39-->
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==8. For either the GMAW or SMAW welding process, demonstrate an ability to use welding guidelines, such as handbook tables, to select the appropriate welding process parameter settings, including proper amperage and electrode type/size for various types and thicknesses of a selected metal.== <!--T:40-->
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==9. Explain and demonstrate proper equipment setup and consumables selection for at least one welding process.== <!--T:41-->
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==10. Describe all the components of the equipment to be used and their function.== <!--T:42-->
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==11. Using the designated processes, perform the following:== <!--T:43-->
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<!-- 11. Using the designated processes, perform the following: -->
  
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===a. PAC: Make one straight cut at least three inches long in mild steel or aluminum=== <!--T:45-->
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===b. SMAW: Complete i and ii, or complete iii.=== <!--T:46-->
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====i. Make two bead-on-plate welds at least two inches total length==== <!--T:47-->
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====ii. Make one square-groove weld in the flat position==== <!--T:48-->
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====iii. Make one corner weld in the flat position==== <!--T:50-->
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===c. GMAW: Complete i and ii, or complete iii.=== <!--T:51-->
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====iii. Make one lap weld in the flat position==== <!--T:55-->
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===''<nowiki>*</nowiki> Must pass a knowledge exam upon completion.''=== <!--T:56-->
 
===''<nowiki>*</nowiki> Must pass a knowledge exam upon completion.''=== <!--T:56-->
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<section end="Body" />

Revision as of 03:00, 2 January 2021

Other languages:
English • ‎español



Welding

Approval authority:
Category:
Skill Level:
Year of Introduction:
Welding (NAD) AY Honor.png

Contents


Template:Division variant

This Honor is a component of the Technician Master Award.




Qualified welding instructor required.

The Welding Honor is perhaps of all the AY honors, the one with the greatest potential to cause injury. If done wrong you can also create unsafe equipment (see requirement note at end) Do not attempt to teach yourself how to weld. An experienced instructor is absolutely required for this honor.


1

Identify all parts of the following:



2

Explain the safe working pressures of oxygen and acetylene, as per your instruc­tor's directions, for various procedures.



2a



2b



2c



2d



2e



2f



2g




3

While blindfolded, demonstrate ability to hook up an entire oxyacetylene kit, including tanks, gauges, hoses, and torches, and light the same.**



3a



3b



3c



3d



3e




4

As per your instructor's directions, weld two mild steel test plates (1/8 inch x 1 inch x 8 inches) (0.3 cm x 2.5 cm x 20.3 cm) in horizontal, and vertical positions.



4a



4b



4c




5

Use a cutting torch and demonstrate your skill by making one 12 inches (30.5 cm) straight-line cut, one circle cut of at least 3 inches (7.6 cm) in diameter and one 3 inch (7.6 cm) star cut. The cuts are to be made on mild steel plate at least 1/4 inch (0.6 cm) thick.



5a



5b




6

Demonstrate your ability to braze a cast-iron object with at least 1/4 inch (0.6 cm) double bevel butt weld 2 inches (5 cm) long.



6a



6b



6c



6d



6e



6f




7

Explain the safety precautions and safety equipment normally used in electric welding in relation to eyes, hands, and exposed skin areas. Why should the tank valves never be oiled?



7a



7b



7c



7d



7e




8

Explain the difference between oxyacetylene and electric arc welding.



9

Demonstrate ability to select from an electrode guide the proper amperage and electrode for various types and thicknesses of metal.



10

Demonstrate ability to weld flat, vertical, horizontal, and overhead on (1/8 inch x 1 inch x 8 inches) (0.3 cm x 2.5 cm x 20.3 cm) mild steel test plates.



11



11a



11b



i



ii



iii




11c



i



ii



iii


* Must pass a knowledge exam upon completion.

^ These are minimum requirements; additional welding is encouraged

References


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