WELDING TECHNOLOGY
1. Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing fusion, which is distinct from lower temperature metal-joining techniques such as brazing and soldering, which do not melt the base metal.
2. In addition to melting the base metal, a filler material is often added to the joint to form a pool of molten material (the weld pool) that cools to form a joint that can be as strong as the base material.
3. Pressure may also be used in conjunction with heat, or by itself, to produce a weld.
4. Some of the best known welding methods include:
5. Shielded metal arc welding (SMAW) - also known as "stick welding", uses an electrode that has flux, the protectant for the puddle, around it. The electrode holder holds the electrode as it slowly melts away. Slag protects the weld puddle from atmospheric contamination.
6. Gas tungsten arc welding (GTAW) - also known as TIG (tungsten, inert gas), uses a non-consumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by an inert shielding gas such as Argon or Helium.
7. Gas metal arc welding (GMAW) - commonly termed MIG (metal, inert gas), uses a wire feeding gun that feeds wire at an adjustable speed and flows an argon-based shielding gas or a mix of argon and carbon dioxide (CO2) over the weld puddle to protect it from atmospheric contamination.
8. Flux-cored arc welding (FCAW) - almost identical to MIG welding except it uses a special tubular wire filled with flux; it can be used with or without shielding gas, depending on the filler.
9. Submerged arc welding (SAW) - uses an automatically fed consumable electrode and a blanket of granular fusible flux. The molten weld and the arc zone are protected from atmospheric contamination by being "submerged" under the flux blanket.
10. Electroslag welding (ESW) - a highly productive, single pass welding process for thicker materials between 1 inch (25 mm) and 12 inches (300 mm) in a vertical or close to vertical position.
ADDRESS :
- arc welding training institute in chennai :
- no.5, boopathy street,
virugambakkam,
virugambakkam - bus stop opposite
chennai , tamil nadu , india.
tel: 044 - 420 77677, 044 - 430 72173
cell : 093845 77677
email : twggroupchennai@gmail.com - arc welding training institute in coimbatore :
- dheepam complex
no.574 to 581, 100 feet road,
near g.p.signal,
landmark: kalyan jewellery
gandhipuram
coimbatore - 641 012 .
tamil nadu , india.
contact : jasmine : 093810 77677, 093845 77677,
contact : sandhiya : 093825 88890
email : twggroupchennai@gmail.com - arc welding training institute in trichy :
- sri gem plaza
no.3, 4th floor,
sankaran pillai street,
s.r.c.college road,
chathiram bus stand,
trichy - 620 002
tamil nadu , india.
contact : jenifer : 093845 77677, 93810 77677
contact : suganya : 093825 88890
email : twggroupchennai@gmail.com - arc welding training institute in mumbai :
- crescent business square" room no.810,
kherani road,opposite - sj studios
sakinaka metro junction,
andheri (east)
mumbai - 400 059.
cell : 093810 48884, 073580 27788, 093810 77677
email : twggroupmumbai@gmail.com
- arc welding training institute in vizag :
- twg group vizag
no. 8 - 12 - 1/1, iind floor, gayathri nilay, gokul nagar,
beside varun motors karur vysya bank back side
opposite - holy cross church, old gajuwaka junction,
vishakapatnam - 530 026.
andhra pradesh , india.
contact : 073580 27788, 093810 48884, 76692 48884.
email : twggroupchennai@gmail.com - arc welding training institute in bangalore :
- twg group bangalore contact : shopia : 076679 78887 contact : office : 093810 48884 email : twggroupchennai@gmail.com
- arc welding training institute in hyderabad :
- twg group hyderabad contact : shopia : 076679 78887 contact : office : 093810 48884 email : twggroupchennai@gmail.com
- arc welding training institute in delhi :
- twg group delhi contact : shopia : 076679 78887 contact : office : 093810 48884 email : twggroupchennai@gmail.com
- arc welding training institute in pune :
- twg group pune
contact : shopia : 076679 78887
contact : office : 093810 48884
email : twggroupchennai@gmail.com - arc welding training institute in cochin :
- twg group cochin
Palarivattom,Cochin,kerala,india - 682 025.contact :Cell : 073580 27788, 093810 48884,
email : twggroupmumbai@gmail.com - arc welding training institute in trivandrum :
- twg group trivandrum contact : shopia : 076679 78887 contact : office : 093810 48884 email : twggroupchennai@gmail.com