Spot welding

Rarity: Common

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Invention

Domain

Science and technology

Knowledge cost

5

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What Wikipedia says

Spot welding (or resistance spot welding) is a type of electric resistance welding used to weld various sheet metal products, through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current.

Excerpt from the Wikipedia article “Spot welding”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Robotworx, CC BY-SA 3.0, via Wikimedia Commons.