Discuss the steps taken for brazing welding.

Brazing welding is a process used to join two or more metal pieces together using a filler metal that has a lower melting point than the base metals being joined. The steps taken for brazing welding are as follows:

1. Cleaning: The first step in brazing welding is to clean the surfaces of the metal pieces that will be joined. This is important to remove any dirt, grease, or oxides that could interfere with the bonding process.

2. Flux application: A flux is applied to the cleaned surfaces of the metal pieces. The flux helps to prevent oxidation of the metal during the heating process and promotes the flow of the filler metal.

3. Assembly: The metal pieces are then assembled in the desired configuration, with the filler metal placed between the joint surfaces.

4. Heating: The assembled metal pieces are heated using a torch or furnace. The heat causes the filler metal to melt and flow into the joint, bonding the metal pieces together.

5. Cooling: Once the filler metal has flowed into the joint and solidified, the metal pieces are allowed to cool. This solidifies the bond between the metal pieces.

6. Cleaning: After the brazing welding process is complete, the joint should be cleaned to remove any remaining flux residue. This can be done using a wire brush or a chemical cleaner.

7. Inspection: Finally, the brazed joint should be inspected to ensure that it is strong and free of defects. This can be done visually or using non-destructive testing methods such as x-ray or dye penetrant testing.

By following these steps, brazing welding can be successfully used to join metal pieces together in a strong and durable manner.