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When should you apply flux when you're soldering?

Jones Welding & Industrial Supply Company
Industrial Welding Experts
Jones Welding & Industrial Supply is based in Albany, Georgia, with 12 other locations across South Georgia and down to Central Florida. The company has been in operation for 47 years and is known for providing quality welding and industrial supplies and gases in the southeastern United States. The team specializes in anything and everything from A-Z for welding with experts on site at all locations to help with all of your welding needs.

Jones Welding & Industrial Supply Company

Industrial Welding Experts

Expert Answer

Flux is applied when soldering to facilitate the flow of solder and remove oxides from the surfaces being joined. It is typically applied before heating the joint. flux can be in the form of a paste or a liquid, and it is used to clean the surfaces and promote proper wetting of the solder.

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Question

Do you need flux for soldering?

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It’s very difficult to solder without flux. Some types of solder, such as rosin core solder, have flux built in, meaning you won’t need to add extra to use them.

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Question

How do you use solid flux?

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Use your soldering iron to melt the solid flux, then dip the tip of your solder into it. The melted flux should stick to the solder.

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Question

Can you use too much flux when soldering?

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If you use an excessive amount of flux, it will leave residue behind on your project. If this happens, you’ll need to clean off the excess flux, since some types are corrosive and can damage the surfaces you’re working with.

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