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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695

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BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695
Textbook Problem
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How can liquid fluxes be delivered to the joint through the torch?

To determine

The technique by which the liquid fluxes are delivered to the joint through the torch.

Explanation

The flux material helps to clean the surface before the joining process by removing or reducing the oxides formed on the surface. Fluxes also help in enhancing the capillary action, this enhanced capillary action is the reason of filler metal flowing inside the spacing between the parts.

Figure: Fluxes remove the oxides and clean the surface which helps in preparing a better joint.

The flux used in the brazing and soldering process serves the following purposes:

  1. Flux must help in removing the oxides forming on the surface. The oxides may form due to heating the parts involved in joining.
  2. The flux helps in wetting the surface which allows the filler metal to spread evenly in the form of a very thin layer on the surface of the solid base metal.
  3. The joints made with the help of soldering and brazing are made with the help of filler material. The filler material seeps into the space between the joints through the capillary action. This capillary action is assisted by the introduction of flux.

The fluxes are available in various forms such as solids, liquids, powders, in the form of sheets, in the form of rings and in the form of washers...

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