MIG vs TIG Welding in Sheet Metal Fabrication(china machining parts Lisa)

In the world of CNC machining, sheet metal fabrication is a broad subject that employs various tools and machines for precise cuts, sturdy joints, and high-quality finishes. In this sphere, welding processes such as MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas), play vital roles. Additionally, two commonly used techniques, chamfering and filleting, aid in achieving desirable results. Let’s delve into these integral aspects of CNC machining.

Firstly, let’s shed light on the dichotomy of MIG welder versus TIG welder in the realm of sheet metal fabrication.

The MIG welding approach, also known as GMAW (Gas Metal Arc Welding), uses a consumable wire electrode that melts during the process. Its defining feature is speed. Production cycles benefit greatly from MIG, which works well with a variety of metals – stainless steel, aluminum, mild steel, and others. The operator feeds the spooled wire through a gun, producing an arc of electricity that heats and penetrates the workpiece, fusing two metals together. If you need efficient production where aesthetic finesse is not paramount, MIG is your ally.

Conversely, TIG welding, or GTAW (Gas Tungsten Arc Welding), adopts non-consumable tungsten electrodes. It gives exquisite control over the heat applied to the workpiece, resulting in clean, high-quality welds, making it preferable where precision and aesthetics are key. However, the TIG process requires a skilled operator due to its complicated set-up and technical proficiency demand. Thus, if your priority lies with fine detailing like sculpture work or automotive repair, then TIG should be your choice.

Moving forward, let’s discuss the widely preferred methods of chamfering and filleting in sheet metal fabrication.

Chamfering is a technique where the edge of a piece gets cut off at a 45-degree angle. This method eases assembling components, especially in welding and bolt assemblies while also eliminating sharp edges that can be hazardous. From CNC machining to manual milling, chamfers are ubiquitous.

In contrast, filleting employs an arc between inner corners of the workpiece, rounding them off. Like chamfers, they too eliminate potentially dangerous sharp corners but differ by providing strength to parts that undergo significant stress. Filleted joints distribute stress across an area rather than concentrating it on one point – a reason why you will often see fillets in automotive or aerospace applications.

china machining parts, cnc laser cutting machine, non ferrous metals
So, is chamfering better than filleting? Not necessarily. The choice hinges largely upon application requirements. For instance, reasons for choosing a chamfer might include offering resistance against erosion, improving component performance, or prepping surfaces for welding. Conversely, you’ll opt for filleting when part longevity is vital or when aesthetics matter, such as consumer products.

To offer superior services for sheet metal fabrication, understanding the differences and advantages of MIG vs TIG welders, along with chamfering vs filleting, is necessary. These methods have unique characteristics suitable for different objectives – from increasing manufacturing speed to enhancing product durability and finish quality. Optimizing these techniques can improve production efficiency, minimize costs, maximize productivity, and manifest the desired end results accurately and effectively.

Want.Net Technical Team

Want.Net Technical Team

The Want.Net Technical Team has diverse members with extensive education and training in CNC machining. They prioritize precision, efficiency, and innovation to provide high-quality manufacturing solutions globally.

Push Your Order into Production Today!

Table of Contents


You’re one step from the  factory-direct price of part manufacturing services.