soldering flux

8.3

A paste or liquid used to clean metal so two parts join when heated

noun
/ˈsɒdərɪŋ flʌks/

Specialized

: fluxo de soldadura

Before connecting the wires, the technician applied soldering flux to ensure a strong and clean joint.

Examples

Using soldering flux prevents oxidation and improves the quality of the soldered connection.
Always remove excess soldering flux after soldering to avoid potential corrosion.
I need some soldering flux for this project.
The soldering flux helps create a stronger bond.
Before connecting the wires, the technician applied soldering flux to ensure a strong and clean joint.
Using soldering flux prevents oxidation and improves the quality of the soldered connection.
Always remove excess soldering flux after soldering to avoid potential corrosion.

Synonyms

flux

vssoldering flux

Specialized

1 8.5

A substance added to hot metal to remove impurities

is applied to surfaces before joining to clean and aid bonding

Surface Forms

soldering flux singular

soldering fluxes plural

Morphology

soldering + flux

The phrase is compositionally built: 'soldering' specifies the activity and 'flux' names the chemical, so a learner who knows both words can infer it is the flux used for soldering. This noun–noun combination follows a common, transparent modifier–head pattern (flux for soldering), making the meaning predictable despite being a technical term.

Etymology

Soldering flux gets its name from flux, a word that can mean 'flow', and from the paste used in soldering that helps the melted solder flow and cleans the metal so the parts join. So today soldering flux means the chemical used to clean and help a strong soldered connection.