A1 Leaving Cert Engineering Project Brief Example
https://docs.google.com/file/d/0BwfcAk2vZlLWUmU5aHRLUGdFcmM/view
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A1 Leaving Cert Engineering Project Brief Example
https://docs.google.com/file/d/0BwfcAk2vZlLWUmU5aHRLUGdFcmM/view
Submerged Arc Welding
Resistance Spot welding
Converts high voltage AC to a lower voltage (220V to 80V-100V). This means the
output current is greater than the input current. This is due to the primary coil having
more windings than the secondary coil.
Produces a more uniform direct current by smoothing the surges produced by the
rectifier.
Circuit for Manual Metal Arc Welding
Acetylene would explode if directly compressed. Instead cylinders are filled with
porous acetone which can absorb 25times the amount of acetylene. This is known as
dissolved acetylene.
The gas cylinders are colour coded for safety as follows:
Oxy-Acetylene welding safety colour coding
Flashback arrestors are fitted to the regulators to prevent the feedback of flame through the hose.
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