Copper coating on filler wires is primarily used to extend the life of which component?

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Multiple Choice

Copper coating on filler wires is primarily used to extend the life of which component?

Explanation:
Copper coating on filler wire is used because it provides a smoother, more lubricious surface and better electrical contact as the wire feeds through the contact tube. This reduces abrasive wear and heat at the tube walls, so the contact tube lasts longer. The coating doesn’t primarily extend the life of the nozzle, electrode tip, or wire spool, making the contact tube the component most affected by this coating.

Copper coating on filler wire is used because it provides a smoother, more lubricious surface and better electrical contact as the wire feeds through the contact tube. This reduces abrasive wear and heat at the tube walls, so the contact tube lasts longer. The coating doesn’t primarily extend the life of the nozzle, electrode tip, or wire spool, making the contact tube the component most affected by this coating.

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