# Welding Essay

5377 Words 22 Pages
Register to read the introduction… S.R.Satish Kumar and Prof. A.R.Santha Kumar

Fig.3.22 Average stress in the weld throat A simple approach to design is to assume uniform fillet weld strength in all directions and to specify a certain throat stress value. The average throat thickness is obtained by dividing the applied loads summed up in vectorial form per unit length by the throat size.

This method is limited in usage to cases of pure shear, tension or compression (Fig.3.23). It cannot be used in cases where the load vector direction varies around weld group. For the simple method, the stress is taken as the vector sum of the force components acting in the weld divided by the throat area.

Fig.3.23 (a) connections with simple weld design, (b) connections with Direction- dependent weld design Stresses Due to Individual forces - When subjected to either compressive or tensile or shear force alone, the stress in the weld is given by:

Design of Steel Structures

Prof. S.R.Satish Kumar and Prof. A.R.Santha Kumar

fa or q =
3.27. These are called end returns. Most designers neglect end returns in the effective length calculation of the weld. End returns are invariably provided for welded joints that are subject to eccentricity, impact or stress reversals. The end returns are provided for a distance not less than twice the size of the weld.

Design of plug and slot welds:
In certain instances, the lengths available for the normal longitudinal fillet welds may not be sufficient to resist the loads. In such a situation, the required strength may be built up by welding along the back of the channel at the edge of the plate if sufficient space is available. This is shown in Fig. 3.28 (a). Another way of developing the required strength is by providing slot or plug welds. Slot and plug welds [Fig. 3.28 (b)] are generally used along with fillet welds in lap joints. On certain occasions, plug welds are used to fill the holes that are temporarily made for erection bolts for beam and

Design of Steel

## Related Documents

1-2. Properties of Materials 3-10. Manual Metal Arc Welding 11. Manual Inert Gas Welding 12. Tungsten Inert Gas Welding 13. Oxy-Acetylene Welding 14-15. Plastic Welding 16. Mechanical Methods of Joining Materials 17. Health and Safety 18. References Low Carbon Steel Low carbon steel is the most common form of steel with a low cost price while it provides material properties that are required for many applications. Low carbon steel contains a low carbon content and is therefore…

Words: 1657 - Pages: 7
• ###### Submerged Arc Welding Process

6541 ASSIGNMENT -1 PART - 1 • The weld is taken from a website: [1] • Product: The weld is for a pressure vessel assembly joining the cylindrical shell and the dome shell. • The type of the weld: The welding process used is a submerged arc welding process with a butt joint where a groove is made of different shapes and sizes in order that the weld pool may sit in the groove to join the parent metal parts. The below mentioned figure represents the submerged arc welding used in joining cylindrical shell…

Words: 1846 - Pages: 8
• ###### The Importance Of Welding

What is welding, and how does it work? Not many of us grasp what welding is or however it works. According to Blessed Virgin Book, “welding is the method of heating and melting metal components to affix them together” (www.weldinggeru.com). A welding machine uses electricity to soften the conductor, fusing one piece of metal to another. The attachment machine uses a ground that connects to the surface that allows the artisan to form a flowing current passing through the conductor and the metal that…

Words: 2252 - Pages: 10