Advantages And Disadvantages Of Welded Joints

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.