23 Feb Comparing MIG, TIG, and Fiber Laser Welding
Astro Sheet Metal utilizes three types of welding: MIG, TIG, and Fiber Laser welding. All three types of welding have their applications, and in this post, we will highlight the differences between them.
How do they work?
MIG Welding – An electric arc is created between a consumable electrode and a metal plate on the weld zone. The welding pool (made from the melted metal) is shielded by an inert gas, which protects the area from contamination.
TIG Welding – A nonconsumable electrode (typically tungsten) forms an electric arc that melts filler material onto the weld zone. TIG Welding also uses a shielding gas to keep the weld zone free from contamination.
Fiber Laser Welding – A concentrated laser beam is used as the heat source to melt and join metals. The laser’s intensity can be adjusted, and filler wire can be added as well.
2) What are their applications?
MIG Welding – Useful for a variety of materials, MIG Welding is often associated with faster, less precise joining. It is also frequently employed for heavier fabrication.
TIG Welding – Generally used for higher-quality, more precise welds on thin metals for cosmetic finishes. It is also useful when a cleaner weld is needed (i.e., corrosion-resistant applications).
Fiber Laser Welding – Useful for high-speed precision joining of metals in applications requiring smaller weld beads, minimal distortion, and clean welds. It also has the capability of joining thick metals to thin metals, and even dissimilar metals in some situations.
3. Which process is fastest?
Without a doubt, fiber laser welding is the fastest welding method. Fiber laser welding generally goes 4-5x faster than TIG welding. Next fastest would be MIG welding, which is more of a “quick and dirty” welding process to join materials together when appearances are not as important. The slowest process is TIG welding, but TIG is probably the most precise method.
4. How does Astro utilize the various welding techniques?
The specifics of each job dictate which welding method will be used, but in general terms:
- MIG welding is used for joining thicker plate, such as industrial bracketry..
- TIG welding is used for shorter welds of thin metals, and in particular, stainless steel, or in food grade welding applications where contamination must be minimized as much as possible.
- Fiber Laser welding is used in cosmetic areas, as its small bead requires minimal cleanup. It is also used when long welds on thin metals must be accomplished, such as across the wide face of a long stainless steel countertop. It also creates beautiful welds on brass, bronze, and copper.
No matter what your project requires, Astro has both the talent and the equipment to accomplish any welds that you may need to the highest level of quality. Give us a call, and let’s see how we can help you with your next custom metal fabrication project!