Home Link Contact Arc welding Gas welding Resistance welding Solid state welding Radiant Energy welding Thermo chemical welding

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



Welding electrodes

Welding electrode

The weld electrode which is used in electric arc welding as a conductor carry the current to the work and produce the heat for the welding process.

This is worked as a filler metal not only conductor in the electric arc welding. The metal of the electrode used basically same properties or chemically composition of parent. During welding the nitrogen and oxygen is reacted with metal produce some impurity. These impurities causes weaken the welding joint. Due to this reason the electrode used in electric arc welding often coated around with a type of substance. The coating materials are contain of flux, inert gas and slag producing substances. The coating

substance prevents the oxides, nitrides formation when electrodes are melts in welding process. The oxides and nitrides which already formed in the weld that also removed. This is helping for anti-oxidation formation in welding cooling period by the slag deposition on the joint.

Reason for coating

Materials used for coating

Types of current used in different core dia. electrode:

Some electrodes work well on either AC or DC. If DC is needed then it indicated that polarity change. Here are current  ranges for the different size electrodes for different positions and various thickness of materials.

©  Copyright 2018 All Rights Reserved www.typesofweldingprocess.com

     Home            Link           Contact   

Welding process