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Submerged arc welding is an ordinary process that involves joining two metals using heat.

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Via: TWI-Global

However, once you look at it closely, it looks extraordinary!

The process is carried out in the following steps:

An arc is formed between the electrode and the piece that you are working upon.

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The arc is below the flux so it is not even visible via: Youtube

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A thin layer of flux powder is maintained on the work piece.

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An arc is welding between two metal pipes with flux powder via: Youtube

As the arc moves, the excess flux powder is displaced and recycled.
(the flux powder is basically a binding agent.)

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The hopper, black in color, is picking up the excess flux powder via: Youtube

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A chemical engineering major, but a confessional poetry enthusiast. My obsessions are simple: food, Manchester United, my cat, Sylvia Plath and my curiosity. (not necessarily in that order)
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