WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF WELDING JOINTS?
Advantages of Welding Joints
- As no hole is required for welding, hence no reduction of area. So structural members are more effective in taking the load.
- In welding filler plates, gusseted plates, connecting angles etc, are not used, which leads to reduced overall weight of the structure.
- Welded joints are more economical as less labor and less material is required.
- The efficiency of welded joint is more than that of the riveted joint.
- The welded joints look better than the bulky riveted/butted joints.
- The speed of fabrication is faster in comparison with the riveted joints.
- Complete rigid joints can be provided with welding process.
- The alternation and addition to the existing structure is easy.
- No noise is produced during the welding process as in the case of riveting.
- The welding process requires less work space in comparison to riveting.
- Any space of joint can be made with ease.
Disadvantages of Welding Joints
- Welded joints are more brittle and therefore their fatigue strength is less than the members joined.
- Due to uneven heating & cooling of the members during the welding, the members may distort resulting in additional stresses.
- Skilled labor and electricity are required for welding.
- No provision for expansion and contraction is kept in welded connection & therefore, there is possibility of racks.
- The inspection of welding work is more difficult and costlier than the riveting work.
- Defects like internal air pocket, slag inclusion and incomplete penetration are difficult to detect.