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Welding history

Classification of welding

Effect of welding speed

Welding defects

Types of welding joints

Welding position

Welding electrodes

Types of welding flame

Welding flux

Welding techniques

Welding symbol

Welding edge preparation

Advantages of welding joints

Thermal properties of metal

Welding safety

Types of welds



Submerged arc welding

Submerged arc welding

Submerged welding is an arc welding process, where welding joint is made by producing an electrical arc or arcs set up between the bare metal electrode and weld metal. This welding process held totally hide condition under a blanket or granular material (flux). There are no pressure is required and continuously fed the bare electrode act as a filler metals on the joints for melt.

Submerged welding principle:

In submerged arc welding process a bare electrode is used and flux is used as a granular material. An electric arc is produced between bare electrode and job. The molten filler metal is covered with flux. This flux is shielded the molten metal contamination from atmospheric gas. This process can be automatic or semi automatic control.

submeged welding schemetic diagram

Submerged welding advantages:

High rate of filler metal deposition and deep penetration is occurred.

Submerged welding operation can be performed considerably higher speed.

Weld distortion is less on weld metal.

Molten filler metal deposited uniformly and possess good ductility and good corrosion resistance properties.

Due to high filler metal deposition the thick material can be welded easily and smoothly.

Spatter less smooth weld shape is obtained.

For welding with submerged welding no edge preparation is required under half inch plate thickness.

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Submerged Arc Welding Principle