CBSE Class 12-science Answered
What is flux ? What is its use?
Asked by sureshkumar kumar | 27 Jul, 2013, 03:59: PM
Expert Answer
In metallurgy, a flux is a chemical cleaning agent, flowing agent, or purifying agent. Flux may have more than one function at a time. It is used in both extractive metallurgy and metal joining.
Iron ore is used as a flux in the smelting of copper.
As a cleaning agent, flux facilitates soldering, and welding by removing oxidation from the metals to be joined. eg- ammonium chloride or rosin for soldering tin; HCl and ZnCl2 for soldering galvanised Iron.
Molten flux also serves as a heat transfer medium, facilitating heating of the joint by the soldering tool or molten solder.
Answered by | 27 Jul, 2013, 11:18: PM
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