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What is electroslag welding and its working principles

Electroslag welding ESW

Today I will be discussing on what is Electroslag welding, and its working principles. Previously, some articles were published on heat treatment. Check out!

What is electroslag welding?

What is electroslag welding and its working principles

Electroslag welding is an arc welding process that generate heat by an electric current. Consumable electrode is used and the weld surface is covered with a molten slag. It is a highly productive, single passing welding process for thick material of about 25mm to about 300mm. It is performed in a vertical or close to a vertical position.

ESW is a combination of both arc welding and resistant welding because at the beginning, the heat is generated when the electrode is struck to the workpiece, leading to a melt flux and creating a molten pool on the joint surface. The current now flows between the pool and the heat, developed due to electric resistance.

Working principles

Working principles of electroslag welding

In ESW process, firstly the current flow between the welding electrode and the workpiece. It creates an arc between them, which melt the filler wire. The melt filler metal is deposited into the joint area, which solidifies in it. the current flowing will generate heat due to the electric resistance. The heat is used to continuously melt down the filler metal into the weld zone. The copper shoe and the fed mechanism both move upward unto the whole cavity is formed.

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And that is it for this article, what is electroslag welding process, and its working principles. I hope you enjoy reading it. If so,  comment and share. Thanks for reading

 

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