How Does Welding Machine Work?

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How Does a Welding Machine Work?

Welding machines are used to join two pieces of metal together. The machine creates an electric arc that melts the metal, allowing it to fuse together. Welding machines come in various sizes and types, including arc welding, TIG welding, and MIG welding. Here is a breakdown of how these machines work.

Arc Welding.

1. The power source: The welding machine's power source is either alternating current (AC) or direct current (DC). The power output is measured in volts and amperes.

2. The electrode: The electrode is the material that is melted during welding. In arc welding, the electrode is usually made of a metal that is compatible with the metal being welded. When the electrode gets close to the welding surface, the electric arc is created.

3. The weld pool: Once the arc is created, a pool of molten metal is formed, and this is used to join the two pieces of metal together.

TIG Welding.

1. Tungsten electrode: TIG welding uses a tungsten electrode that is non-consumable. This means that it doesn't melt during the welding process and can last a long time without needing to be replaced.

2. Shielding gas: The welding area is covered with a shielding gas that prevents any contamination of the welded area. The most common gases used are helium and argon.

3. Filler metal: A filler metal is usually used in TIG welding to help join the two pieces of metal together. The filler metal is fed by a separate wire that is controlled by the welder.

MIG Welding.

1. Wire feed: MIG welding uses a continuous wire feed that is fed into the weld area by a spool. The wire is usually made of the same metal as the pieces being welded together.

2. Shielding gas: Like TIG welding, MIG welding also uses a shielding gas to protect the weld area from contamination. The gas is usually a mixture of argon and carbon dioxide.

3. Power source: The power source for MIG welding is a constant voltage power source. The voltage is set by the welder, and the machine then controls the amperage to maintain the correct heat during the welding process.

In conclusion, welding machines work by using electric arcs to melt the metal and join two pieces of metal together. Different types of welding machines have specific requirements for the type of electrode, shielding gas, and power source used. Understanding these different types of welding machines and how they work can help you determine the best machine for your welding needs.

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