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Root

The furthest point of penetration of a weld joint on the side opposite to the heat source.

The root can become hard and brittle if it stays in the critical temperature zone too long. That happens when the base material isn't cleanly fused through and cools too quickly. Then the structure can become glassy and crack-prone. Make sure the heat goes in evenly and the weld cools slowly enough, then the root stays tough and withstands the load.

MetallurgieSchweißtechnik

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