Applications of Welding : Applications of Various Welding Processes are given in this post. You can read all the imporatant welding applications for each type of welding is available here.
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Applications of Welding
- Forge welding is used in olden days for joining metals as a lap and butt joint.
- Metallic arc welding is used for welding all ferrous and non-ferrous metals using consumable stick electrodes.
- Carbon arc welding is used for welding all ferrous and non-ferrous metals using electrodes and separate filler metal. But this is a slow welding process and so not use now-a-days.
- Submerged arc welding is used for welding ferrous metals, thicker plates and for more production.
- CO2 welding (gas metal arc welding) is used for welding ferrous metals using continuously fed filler wire and shielding the weld metal and the arc by carbon-dioxide gas.
- TIG welding (inert gas arc welding) is used for welding ferrous metals, stainless steel, aluminium and thin sheet metal welding.
- Atomic hydrogen welding is used for welding all ferrous and non-ferrous metals and the arc has a higher temperature than other arc welding processes.
- Electro-slag welding is used for welding very thick steel plates in one pass usingthe resistance property of the flux material.
- Plasma arc welding: The arc has a very deep penetrating ability into the metalswelded and also the fusion is taking place in a very narrow zone of the joint.
- Spot welding is used for welding thin sheet metal as a lap joint in small spots by using the resistance property of the metals being welded.
- Seam welding is used for welding thin sheets similar to spot welding. But adjacent weld spots will be overlapping each other to get a continuous weld seam.
- Projection welding is used to weld two plates one over the other on their surfaces instead of the edges by making projection on one plate and pressing it over the other flat surface. Each projection acts as a spot weld during welding.
- Butt welding is used to join the ends of two heavy section rods/ blocks together to lengthen it using the resistance property of the rods under contact.
- Flash butt welding is used to join heavy sections of rods/ blocks similar to buttwelding except that arc flashes are produced at the joining ends to melt them before applying heavy pressure to join them.
- Oxy-acetylene welding is used to join different ferrous and non-ferrous metals, generally of 3 mm thickness and below.
- Oxy-other fuel gases welding: Fuel gases like hydrogen, coal gas, liquefied petroleum gas (LPG) are used along with oxygen to get a flame and melt the base metal and filler rod. Since the temperatures of these flames are lower than the oxyacetylene flame, these welding are used to weld metals where less heat input is required.
- Air-acetylene gas welding is used for solder, heating the job etc.
- Induction welding is used to weld parts that are heated by electrical induction coils like brazing of tool tips to the shank, joining flat rings etc.
- Thermit welding is used for joining thick, heavy irregularly shaped rods, like rails, etc using chemical heating process.
- Friction welding is used to join the ends of large diameter shafts etc. by generating the required heat using the friction between their ends in contact with each other by rotating one rod against the other rod.
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