4. (a) (i) Name the two gases most commonly used in gas welding - Leaving Cert Engineering - Question 4 - 2018
Question 4
4. (a) (i) Name the two gases most commonly used in gas welding.
(ii) State the colour of each cylinder used to store the gases named in 4(a)(i) above.
(iii) Ident... show full transcript
Worked Solution & Example Answer:4. (a) (i) Name the two gases most commonly used in gas welding - Leaving Cert Engineering - Question 4 - 2018
Step 1
Name the two gases most commonly used in gas welding.
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Answer
The two gases most commonly used in gas welding are oxygen and acetylene.
Step 2
State the colour of each cylinder used to store the gases named in 4(a)(i) above.
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Answer
The oxygen cylinder is black, and the acetylene cylinder is maroon (red).
Step 3
Identify the three types of flame produced when gas welding.
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The three types of flame produced during gas welding are:
Oxidizing flame
Neutral flame
Carburizing flame
Step 4
Welding mask
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A welding mask is used to protect the user from the bright light and heat of the welding process, covering both eyes and skin.
Step 5
Generator
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A generator is used to produce the electricity required for the manual metal arc welding process when an electricity supply is unavailable.
Step 6
Electrode holder
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The electrode holder is used to hold the electrode during welding and has an insulated handle to protect the user.
Step 7
Advantages of using spot welding to join sheet steel.
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Spot welding does not require a high level of skill to use, making it accessible.
It is portable, allowing for easy use in various locations.
Step 8
Permanent joint between electronic components.
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Soldering is a suitable method used to create a permanent joint between electronic components.
Step 9
Reason for using a locknut when assembling project work.
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Locknuts are used in assemblies because they prevent loosening due to vibrations.
Step 10
Health hazards associated with gas welding.
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Fumes from burning gases can pose health risks, including respiratory issues.
High temperatures produced by the gases can cause burns or heat-related injuries.
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