How MIG welding works – Beginner’s guide 2021

How MIG welding works - Beginner's guide 2021 1

Usually, MIG welding is one of the easiest techniques you can learn quickly. Therefore, any welder should have these skills and techniques for an effective welding process. When you have all the basics of how MIG welding works, it becomes easy for you to weld quickly.

In this site, it will help you understand the basics and step by step on how MIG welding works. Without wasting time, let us first understand the MIG welding equipment.

MIG welding equipment

Before starting any MIG welding activities, it is good to have proper knowledge of this equipment’s various components first.

  • Welder

A welder is a particular part of the MIG where you can locate the electrode’s spool, which is responsible for creating the anode electrode. Besides, the existence of the rollers plays a vital role in pushing the wire close to the entire welding gun.

  • Welding gun

In case you want to perfect mig welding, it is good to focus on the welding gun. Usually, the outcome of your weld depends largely on how you control the welding device’s different settings. You should also note that welding guns are of different types depending on the manufacturer. Most of them have a pistol grip, while others appear like a baton.

  • Mig wire

Mig wire is one of the most crucial components in MIG welding. The wire comes in different types that you can use. However, it depends on the workpiece of the metal. Besides, the size of this wire matters a lot too.

  • Gas tank

You cannot use a Mig welder without mentioning the source of its gas. Usually, this is where the gas tank exists. Generally, there are three main types of gases that are appropriate to use in MIG welding. The gases include; pure argon, which is perfect when working with aluminum, carbon dioxide, and the mixture of argon and carbon dioxide.

Step by step process on how MIG welding works

Now that you have all the essential ideas required in MIG welding, it is now time to look at the actual MIG welding process.

Step one: safety first

Whenever you are carrying any MIG welding activities, you need to consider safety first. Throughout the welding process, there is the production of several hazardous fumes, which may cause damages. Therefore, when welding, ensure that you carry all the activities in a well-ventilated room. More important is to ensure that you wear masks or even respirators.

Step one: safety first

At this stage, you need to prepare the metal that you intend to work on. For suitable welding, you need to clean and smoothen the entire edges of the metal material you intend to join. Cleaning and smoothening the metal’s surface enables the welder to remove imperfections for more comfortable and practical welding.

In case you are working on thick sheets of metals, ensure that you bevel its joint. Beveling guarantees the welder to carry deeper penetration onto the base of that metal material.

Step three: setting up the machine

Once you prepare the entire working area, it is good to set now your working machine. However, before working, you should always inspect the connection of the cables on your device. Besides, make sure that the polarity is well set to the direct current electrode or even to DCEP by checking your welder.

If all the polarities are well set, you should also set the proper flow of the gas. Ensure that you have a gas flow rate that ranges between 20-25 ft3/hr. You should also ensure that the hose of the welder is free from any leak. Also, you can as well check the drive rolls.

If you get stuck on your way, you can refer to the manual book for the perfect settings. However, if there is any sign of wear, it is suitable for immediate replacement. Additionally, ensure that you check the electrode wire to prevent rust and replace it if you get one.

Step four: Begin with practice beads

By any chance, if you have been working in MIG welding for a long time, you can decide to ignore this step. However, for beginners, it is good to do some thorough practice first. Usually, there are several techniques for mig welding. Therefore, you can try all of these techniques to identify the best for you, which you are comfortable with.

Generally, there are two different ways that you can use to move the entire welding gun. Many operators for MIG welding like using forehand or pushing technique. But the question is, how do they achieve this? I can answer this. To achieve this, you can place your welding gun at an angle of ten degrees while the wire electrode point in the direction of its weld.

You can push the welding gun while pressing and holding on to the trigger and then pull it back immediately. On the other hand, the next technique is referred to as the backhand or pulling technique. It works by removing the hand back, unlike in the forehand, where you can push the entire gun forward.

Therefore it is advisable to try using either technique before incorporating the type of weld beads. In this case, the stringer bead is the easiest than the cursive ‘e’ technique.

Step five: Get the welding

When you have the welding technique that you will use, you can comfortably begin the project you intend to weld. However, remember to smoothen and clean the entire surface that you will do some welding on.

Frequently Asked Questions

  • Is Mig welding easy to learn?

Mig welding and flux-cored welding are the most accessible type of welding to learn comfortably. Both the two processes of welding are capable of welding materials that are as thin as 26 gauges.

  • Is mig welding strong?

Mig welding is very strong because the bare wire of E70s6 used is very strong. Usually, the wire has a 70000 psi tensile strength that is very strong than any steel wire.


Now that you have gone through my guide, I hope you have gained all the knowledge and skills required for the MIG welding process. Therefore, it is good to put in mind safety first to avoid any injuries throughout the welding process.

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