It is done with applying heat and adding a filler metal. The filler, which has a lower melting point than the metals to be joined, is fed into the joint as the parts are heated. It is similar to soldering but at a much higher temperature.
Brazing for hobbies
You should use solder, not brazing. Brazing is used to join iron or steel products together.
brazing clints head
Certainly, it is frequently done with silver, brass, and bronze brazing alloys. Brazing steel tubes used to be the predominate method of manufacturing bicycle frames, and some high-end ones are still made that way.
yes there is brazing is done w silver alloy Brazing has a tensile strenght of 87,000 PSI and soldering around 16,000 Brazing filler metals require a melting point of 1,100 DEG Fsoldering around 600 Def F Using the correct type of brazing rod they are self fluxing on copper alloys and thus great for Oxygen and other medical gases and HVAC work
Brazing is also known as soldering or soft soldering in the layman vernacular.
You usually do not braze copper, you solder it. If you were to use brazing rod on copper, the copper would have very close to the same melting point as the brazing rod. This makes it difficult to do. As far as preheating the copper, it needs to be hot enough for the brazing to flow.
Brazing
Flux can be applied using brazing rods. Bronze and Steel weldings can also be applied using brazing rods. You can also apply iron and other types of metal.
1. Joint Design2. Choice of Brazing Filler Metal Alloy3. Pre-cleaning4. Fluxing the Joint5. Heating the Joint and Applying the Filler Metal6. Removing the Flux Residues After Brazing
You must use flux while brazing because the flux prevents oxides from forming while the metal is heated. The flux also serves the purpose of cleaning any contamination left on the brazing surfaces.
When Brazing copper to copper flux is normally not needed When brazing steel or copper based alloys then the flux is used to help the wetting action (Better flow of the brazing alloy) and to prevent oxidation A typical rod would be Union Carbide 25 M or check out the AWS booklet