Submerged arc welding is an arc welding process where the arc and molten metal are protected from atmospheric contamination by a blanket of granular flux. The flux covers the weld area and shields it, preventing spatter and suppressing ultraviolet radiation and fumes. The flux also acts as a thermal insulator to promote deeper penetration. The process uses a consumable bare wire electrode and can achieve very high welding speeds while allowing the operator to work without safety equipment. However, it is limited to flat and horizontal positions and requires slag removal after welding.

1. SUBMERGED ARC WELDING

2. Submerged Arc Welding

3. Welding Process
• Oxy-fuel Gas
Welding
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• Arc Welding
Submerged
Arc Welding
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• Resistance
Welding
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• Solid State
Welding
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4. Video

6. In Submerged Arc Welding…..
• Weld arc is shielded by granular flux, consisting of lime, manganese
oxide, calcium fluoride, silica and other compounds.
• It prevents spatter and sparks and suppresses the intense ultraviolet
radiation and fumes.
• Flux also act as a thermal insulator promoting deeper penetration of
heat into the workpiece.

7. • Consumable electrode is a coil of bare round wire 1.5mm – 10mm
in diameter.
• Electrical current typically range between 300A to 3000A with AC
single or three phase.
• Limitations
• Operation can be performed only in FLAT and HORIZONTAL positions.
• But circular welds can be made on pipes and cylinders provided that they are
rotating the welding.

8. • Advantages
 Very high welding speeds can be achieved.
 Operator can easily work without any safety equipment.
 Easily achieve High metal deposition rate.
• Disadvantages
 Operation can be performed only flat and horizontal position.
 Flux can get contaminated and lead to porosity in weld.
 An additional follow-up operation of slag removal has to be
performed.

9. Video

10. Applications
• Penstoks
• Boilers

12. Any Questions………..?

13. Thank You!