MIG vs TIG Welding: Applications for Laser Cuts + Pros & Cons

Laser cutting offers a great way to achieve precise cuts and intricate designs. However, when you’re done with the cuts, it’s time to join your pieces together. MIG TIG welding are popular methods for joining metal parts. However, there are key differences between these two methods. Below we take a look at MIG vs TIG welding and their applications so you can determine which method will be best for your project.

What’s the Difference between MIG and TIG Welding

In order to determine the best method of welding for your application, you must first understand the difference between MIG and TIG welding.

• Definition

MIG (metal inter gas) welding involves using a powerful electrical current generated through the torch. The electrical current arcs through a consumable electrode to join the metal pieces. TIG (tungsten inter gas) welding involves the use of a tungsten electrode that isn’t consumable. In this method a filler consumable rod is used to reinforce the joint.

• Power source

MIG welding makes use of direct current (DC) as its power source as this is reliable and results in less weld splatter or errors. DC is best when welding thinner materials or when more control is required.

Both DC and AC (alternating current) can be used for TIG welding. This makes it a more versatile welding option as you can shift from one power source to another during the welding process.

• Electrodes

MIG welding uses consumable electrodes. The electrodes are placed in the torch and melt to form the joint. TIG welding uses a tungsten electrode which is not consumable. This electrode only delivers the electrical charge. A separate consumable rod of a sacrificial material is used to reinforce the joint.

• Metal choices

While most metals can be welded using either method, you will achieve better results for some metals when you select one method over the other. MIG for example is best suited for cutting mild steel and cast iron. These metals are easy to handle and don’t require much processing to achieve smooth and clean finishes. TIG welding is best for cutting stainless steel and aluminum. These metals require more care in order to avoid warping.

• Shield gas

A blend of argon and carbon dioxide is most commonly used for MIG welding. This is ideal for thicker metals. Pure argon or a blend of argon and helium or nitrogen is often used for TIG welding. This helps to prevent the overheating of the electrode. The gases are heavier than oxygen and are ideal for protecting welds from splatter and air bubbles.

• Speed

MIG is typically faster than TIG making it the better choice for high volume production. This is because the filler rod must be supplied manually in TIG welding.

• Cost

MIG welding is lower in cost per unit than TIG welding. This is because less prep work is required and it is faster than TIG welding.

• Quality

When it comes to quality of MIG welding vs TIG welding, it will depend with the result’s you’re seeking. MIG provides for strong and durable welds. It is best suited for producing heavy duty applications. TIG is best welding is best for more precise welds and achieving aesthetically pleasing results. it is also better for thin and more delicate applications.

Combining Laser Cutting and Welding

Welding is the perfect for complementing laser cutting. One of the biggest benefits is that welding can help to increase the strength during joining. Depending on the method used, you can create a more durable and permanent joint. Welding is diverse and can be used for various types of metals.

For the best laser cutting services in Springfield get in touch with us, FM Sheet Metal Inc. We can help you bring your vision to life.