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Answer any three of the following: (i) Outline two main features of electro-slag welding - Leaving Cert Engineering - Question a - 2021
Question a
Answer any three of the following: (i) Outline two main features of electro-slag welding. (ii) Identify three safety features integrated into oxy-acetylene welding... show full transcript
Worked Solution & Example Answer:Answer any three of the following: (i) Outline two main features of electro-slag welding - Leaving Cert Engineering - Question a - 2021
Step 1
Outline two main features of electro-slag welding.
Answer
Electro-slag welding is characterized by:
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Productivity: It is a highly productive, single-pass welding process designed for thick metals, allowing for the joining of materials up to 300 mm in thickness.
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Automation: The process can be automated, which enhances efficiency and consistency in welding applications.
Step 2
Identify three safety features integrated into oxy-acetylene welding equipment.
Answer
Safety features of oxy-acetylene welding equipment include:
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Colour-Coded Cylinders: Low pressure acetylene and high-pressure oxygen cylinders and lines are colour-coded to prevent confusion and accidents.
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Storage in Acetone: Acetylene is stored in acetone to prevent explosion, ensuring safer handling.
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Flashback Arrestors: These are used in the system to prevent the backflow of gases, which can cause dangerous situations during welding.
Step 3
Explain the function of the earth clamp in arc welding units.
Answer
The earth clamp, commonly referred to as the earth lead, serves an essential function in arc welding units. It ensures the electrical circuit is closed between the welding power source and the piece to be welded. This grounding is crucial for safety, preventing electrical shocks and ensuring the welder's and workpiece's integrity.