Lincoln MIG Machines

What is the principle of MIG Welding Machine?

Metal Inert Gas (MIG) welding is an arc welding process that uses a continuous solid wire electrode heated and fed into the weld pool from a welding gun. The two base materials are melted together forming a join.

Metal-inert gas (MIG) welding machine, also known as gas-metal arc welding (GMAW), is a type of welding machine in which metal parts are joined together by creating an electric arc between a consumable wire electrode and the workpiece , and with a continuous flow of inert air Protects the weld pool from atmospheric contaminants

Here's how it works:

1. Power Source: The MIG welding machine supplies the electricity required to produce the welding arc. It usually operates from AC (Alternating Current) or DC (Direct Current) power.
2. Wire Feeder: The machine feeds continuous wire electricity from the spool to the welding torch through a wire feeding mechanism.
3. Welding Torch: The welding torch holds the electrode and directs the flow of shielding gas to the welding area. It also has a trigger mechanism that controls string feed and arc start.
4. Shield gas: An inert gas, argon-, helium- or gas-mixture, is used to protect the melt-weld pool from atmospheric contamination, prevent oxidation, and insure that weld is good
5. Factory Grounding: As with most welding processes, the work being welded is usually connected to the welding machine through a grounding clamp to complete the electrical circuit

When the welding process begins, the operator presses the trigger on the welding torch to start the arc. Electric current flows through the wire electrode, creating an arc that softens the electrode and the work piece, creating a cooled weld pool Meanwhile shield air flows through the torch, around the arc and around the weld protect against atmospheric rays that can weaken the joints.

Frequently Asked Questions:

Here are few of the FAQs related to Lincoln MIG machine:

What is MIG Machine used for?

MIG welding joins metal parts together, like steel, stainless steel, cast iron, and aluminum. Lincoln MIG welders are handy for connecting things like sheet metal, pressure vessels, steel structures, pipes, and car parts.

What Gas is used for MIG Welding?

The main gas for MIG/MAG welding is argon (Ar). If needed, helium (He) can be added to make the weld pool flow better and penetrate deeper. Argon or mixtures of argon and helium can be used to weld all types of metal.

What are the Safety Precautions for a MIG Welder?