Electro slag welding and its advantages and disadvantages with its application.

Electro slag welding and its advantages and disadvantages with its application.

Principle: 

Electra slag is a welding process in which the coalescence is formed by molten slag and molten metal pool remains shielded by the molten slag.

In this welding process, the electric arc is struck between the electrode and work jointed by the use of steel wood. Welding flux is added and melted by the use of heat flux added and further melted by the use of heat from the arc. This action is stopped until the molten slag is formed and molten slag remains between the electrode and the Work. The temperature of this slag remains between 1600 to 1900 °C inside surface. So, this high amount of heat energy is enough for melting the work piece and the electrode. Thus, the weld is formed.

The electric current passes from the electrode to the work piece through the slag pool. The weYding flux used in electro slag welding should be cleared from impurities and oxidation. 

Applications: 

1.It is used for welding carbon steels alloys steels and nickel alloys.

2.Forgings and castings are welded

3.Heavy plates can be welded. 

Advantages: 

1. Heavy thickness metals can be welded economically.

2. Low stress formation. 

3. Preparation of joints is eamg 

4.High deposition during the weld.