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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



Gas Welding

Gas Welding

The gas welding, wherein coalescence is produced of metals by heating with gas flame. The major difference between electric arc welding and gas welding is only source of heat. Gaseous flame is source of heat in this welding process. There are different types of gas welding in welding science i.e oxy-acetylene, oxy-hydrogen, air-acetylene and pressure gas. The oxy-acetylene flame welding is more used in industry relatively other.

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Gas welding, types of welding