Final answer:
Both soldering and brazing use flux to clean and facilitate the joining of metal parts. However, brazing usually operates at higher temperatures, and unlike brazing, soldering does not involve melting the base metals. The primary objective for both techniques is to join metal pieces together.
Step-by-step explanation:
Soldering and brazing are techniques for joining metal parts that share some similarities. The student's question asks which statement(s) is true about soldering techniques being similar to brazing methods. Below, we will assess the options provided.
- High heat requirement: Both soldering and brazing require heat, but typically brazing requires higher temperatures than soldering.
- Use of flux: This is correct. Both soldering and brazing typically use flux to clean the metal surfaces and to prevent oxidation during the heating process.
- Melting base metals: This is where soldering and brazing differ significantly. In soldering, the base metals are not melted, whereas in brazing, the metals can reach a temperature that is close to their melting point but are not meant to melt.
- Fusion of the workpieces: In both processes, the goal is to join pieces of metal together. However, 'fusion' implies melting which is not typical of soldering, but the filler metal does indeed melt to join the pieces in both techniques.
In conclusion, the correct similarity between soldering and brazing methods is the use of flux.