What is a disadvantage of welding joints?

Welding joints are indeed characterized by the difficulty or impossibility of disassembly once the weld has been completed. This is a significant disadvantage because many construction or assembly processes may require future adjustments, replacements, or repairs. When components are welded together, they form a permanent bond that typically can't be taken apart without damaging the parts or requiring significant effort and skill. This can limit flexibility in design and maintenance, making it less favorable in situations where reconfiguration is needed.

In contrast, other fastening methods, such as bolts or screws, can be removed and reused, allowing for easier repairs and modifications. This characteristic of welding can also complicate recycling processes, as the individual components are more challenging to separate. Thus, while welding creates strong and often durable joints, the inability to easily disassemble them presents a major consideration in selecting the appropriate fastening method for various applications.