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Classification Of Welding Processes and allied Processes


There are  different welding, brazing and  soldering methods are  being  used in industries today. There are  various ways  of classifying the  welding and  allied processes. For  example, they may be classified on the  basis of source of heat, i.e.,  blacksmith fire,  flame, arc,  etc.  and  the  type of interaction i.e.,  liquid / liquid (fusion welding) or  solid/solid (solid  state  welding). Welding processes may  also  be classified in two  categories namely plastic (forge)  and  fusion. However, the  general classification of welding and  allied processes is  given  as  under

(A)  Welding Processes

1. Oxy-Fuel Gas  Welding Processes
1   Air-acetylene welding
2   Oxy-acetylene welding
3   Oxy-hydrogen welding
4   Pressure gas  welding

2. Arc  Welding Processes
1.   Carbon Arc  Welding
2.   Shielded Metal Arc  Welding
3.   Submerged Arc  Welding
4.   Gas  Tungsten Arc  Welding
5.   Gas  Metal Arc  Welding
6.   Plasma Arc  Welding
7.   Atomic  Hydrogen  Welding
8.   Electro-slag Welding
9.   Stud Arc  Welding
10.    Electro-gas Welding

3.  Resistance  Welding
1.   Spot Welding
2.   Seam  Welding
3.   Projection  Welding
4.   Resistance Butt Welding
5.   Flash Butt Welding
6.   Percussion  Welding
7.   High  Frequency Resistance  Welding
8.   High  Frequency Induction  Welding

4. Solid-State  Welding Processes
1.   Forge  Welding
2.   Cold  Pressure  Welding
3.   Friction  Welding
4.   Explosive Welding
5.   Diffusion Welding
6.   Cold  Pressure  Welding
7.   Thermo-compression  Welding

5. Thermit  Welding Processes
1.   Thermit  Welding
2.   Pressure  Thermit  Welding

6.  Radiant  Energy Welding Processes
1.   Laser  Welding
2.   Electron Beam  Welding

(B) Allied  Processes

1. Metal Joining or  Metal Depositing Processes
1.   Soldering
2.   Brazing
3.   Braze Welding
4.   Adhesive Bonding
5.   Metal Spraying
6.   Surfacing

2. Thermal Cutting Processes
1.   Gas  Cutting
2.   Arc Cutting

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