Advantages And Disadvantages Of Welded Joints

·         The following are the advantages of welded joints.

·         Due to the absence of gusset plates and other connecters, the welds are usually lighter.

·         Welding process is quicker as it requires no drilling of holes.

·         Welding is more adaptable than other types of connections and can even be used in circular pipes.

·         100% efficiency can be achieved in welding where as the connection such as bolts can have a maximum efficiency of 70 - 80%.

·         Noise produced during the welding process is relatively less.

·         Welds usually have good aesthetic appearance. 

·         Welded joints are air tight and water tight and can be used for water tanks and gas tanks.

·         Welded joints are rigid.

·         Mismatch of holes will never happen in welded connection.

·         Alternation of joints can easily be made in the case of welded connecetions.

However the welded connection is having the following disadvantages.

·         Due to the uneven heating and cooling, members are likely to distort in the process of welding.

·         Possibility of brittle fracture is more in the case of welded connections.

·         Welded connections are more prone to failure due to fatigue stresses.

·         The inspection of welded joints is difficult and expensive. It can only be done by employing NDT.

·         Highly skilled persons are required for welding.

·         Proper welding in field conditions is difficult.

·         Welded joints are over rigid.