Photo AI
Describe any two factors that should be considered during the design of a weather vane in order to prevent corrosion - Leaving Cert Engineering - Question a - 2014
Question a
Describe any two factors that should be considered during the design of a weather vane in order to prevent corrosion. Describe any two suitable methods that could b... show full transcript
Worked Solution & Example Answer:Describe any two factors that should be considered during the design of a weather vane in order to prevent corrosion - Leaving Cert Engineering - Question a - 2014
Step 1
Describe any two factors that should be considered during the design of a weather vane in order to prevent corrosion.
Answer
-
Material Choice: It is crucial to select a suitable material for the weather vane. Using steel is common, but it must be properly protected to prevent rust. If using multiple metals, ensure they do not react chemically since this could enhance corrosion.
-
Design Shape: The design should avoid features that collect water, such as pools or depressions. Proper shape and positioning can aid in the runoff of water, minimizing corrosion risk.
Step 2
Describe any two suitable methods that could be used to protect the metal weather vane shown, from the corrosive effects of the environment.
Answer
-
Galvanizing: One effective method is galvanizing the metal by hot-dipping into zinc, which forms a protective, non-corrosive layer on the weather vane.
-
Dip Coating: Another method is dip coating the weather vane in a layer of plastic, such as polyethylene or nylon. This provides a barrier against moisture and environmental factors that cause corrosion.