Gas metal arc welding pdf

This consumable electrode used in form of wire. This wire is continuously supplied by wire feed mechanism or system. It controls the speed of the wire and pushes the wire form welding torch to welding area.

This torch is slightly different as used in TIG welding. In this torch there is a mechanism which hold the wire and supply it continuously with the help of wire feed. The primary function of shielding gases is to protect weld area from other reactive gases like oxygen etc. These shielding gases are also form plasma which helps in welding. As the name implies, they are used to regulate the flow of inert gases from the cylinder.

The inert gases are filled into cylinder at high pressure. These gases cannot be used at this pressure so a regulator is used between the gases supply which lower down the gases pressure according to welding requirements.

Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Skip to content. Manufacturing Processes. Priyam Singh. No Comments. Principle MIG works on basic principle of heat generation due to electric arc. Equipment Power Source In this type of welding process, a DC power supply is used with reverse polarity. Reverse polarity means the electrode or in case of MIG welding electrode wire is connected positive terminal and work piece to negative terminal Wire Feeder System MIG welding needs continuous consumable electrode supply for welding two plates.

In this torch there is a mechanism which hold the wire and supply it continuously with the help of wire feed Shielding Gas The primary function of shielding gases is to protect weld area from other reactive gases like oxygen etc.

Regulators As the name implies, they are used to regulate the flow of inert gases from the cylinder. The Handbook reaches deeply into the area of nondestructive testing and science. In addition, this Handbook discusses the challenges presented by a number of corrosion-resistant alloys CRAs. Skip to content The book presents thorough coverage of both basic skills and advanced techniques, with clearly written content and hundreds of illustrations.

Author : William H. Author : W. Provides answers to questions in the text.