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Answer any three of the following: (i) Name tool A shown and give one use for this tool - Leaving Cert Engineering - Question c - 2022
Question c
Answer any three of the following: (i) Name tool A shown and give one use for this tool. (ii) Explain why spot welding is not suitable for joining heavy gauge stee... show full transcript
Worked Solution & Example Answer:Answer any three of the following: (i) Name tool A shown and give one use for this tool - Leaving Cert Engineering - Question c - 2022
Step 1
Step 2
(ii) Explain why spot welding is not suitable for joining heavy gauge steel plate.
Answer
Spot welding, or resistance welding, is ineffective for heavy gauge steel plate because it relies on localized melting of small areas to create welds. When joining thick materials, the heat generated is insufficient to achieve a good bond across the larger thickness. Consequently, the welding process fails to penetrate deeply enough, resulting in weak joins that cannot withstand stress.
Step 3
(iii) In relation to soldering, explain the term sweated joint and give one example where a sweated joint might be used.
Answer
A sweated joint is a soldering method used when the components are too large to directly solder together. This method involves tacking one component with a light coat of solder, then adding the second component, which is then heated to melt solder and achieve a secure joint. A common example is in plumbing when joining two copper pipes; the parts are initially tinned with solder and then heated to create a reliable connection.
Step 4
(iv) Give one advantage of using thumb screws when assembling parts.
Answer
One advantage of using thumb screws is that their knurled surface allows for tool-free tightening, enabling quick adjustments by hand without the need for additional tools, which enhances convenience and efficiency during assembly.