Are Handheld Laser Welders Good Than TIG MIG?

Laser welders and TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding processes are all widely used in the industry for different applications. 

Let's compare them in terms of their key characteristics:

1. Welding Process:

• Laser Welding: Laser welding utilizes a high-powered laser beam to melt and join the workpieces. The laser beam provides concentrated heat, resulting in a precise and localized weld.

• TIG Welding: TIG welding uses a non-consumable tungsten electrode to produce the arc and a separate filler material to create the weld joint. The process requires manual control and is known for its high-quality and precise welds.

• MIG Welding: MIG welding involves the use of a consumable electrode wire that melts and joins the workpieces. An inert gas shield, such as argon or a mixture of argon and carbon dioxide, protects the weld pool from atmospheric contamination.

2. Speed and Productivity:

• Laser Welding: Laser welding is generally faster than TIG and MIG welding for thin materials. It can achieve high welding speeds and is suitable for automated production processes.

• TIG Welding: TIG welding is a slower process compared to laser and MIG welding due to the manual nature of the operation. It is often used for precision welding applications that require a high level of control.

• MIG Welding: MIG welding is faster than TIG welding as it is a semi-automated or automated process. It is commonly used for high-production welding applications.

3. Heat Input and Distortion:

• Laser Welding: Laser welding produces a minimal heat-affected zone (HAZ) and reduced distortion due to its concentrated heat source. It is particularly suitable for welding thin and heat-sensitive materials.

• TIG Welding: TIG welding generates a smaller HAZ compared to MIG welding but has a higher heat input. It can result in more distortion than laser welding for certain applications.

• MIG Welding: MIG welding produces a larger HAZ and can cause more distortion compared to laser and TIG welding due to the higher heat input.

4. Weld Quality:

• Laser Welding: Laser welding typically provides excellent weld quality with minimal defects and porosity. It offers high precision and control over the welding process.

• TIG Welding: TIG welding is known for its high-quality welds with good aesthetics and strong mechanical properties. It allows for precise control over the welding variables.

• MIG Welding: MIG welding can produce satisfactory weld quality, but it may be more prone to defects such as porosity and spatter compared to laser and TIG welding.

5. Material Compatibility:

• Laser Welding: Laser welding is suitable for a wide range of materials, including metals and some thermoplastics.

• TIG Welding: TIG welding is versatile and can be used for various metals, including stainless steel, aluminum, copper, and titanium.

• MIG Welding: MIG welding is commonly used for steel and stainless steel but can also be used for aluminum and other metals.

It's important to note that the choice between laser welding, TIG welding, and MIG welding depends on factors such as the specific application, material type, thickness, production requirements, and desired weld quality. Each process has its advantages and limitations, and the selection should be based on a comprehensive evaluation of these factors.