A few distinctions exist between standard and micro TIG welding. Though the filler rod and tungsten have different amp ranges and sizes, both use tungsten to produce the arc for the weld. Micro TIG and conventional TIG welding are best suited for distinct applications because of their significantly differing heat ranges.
Below, we delve deep into micro TIG welding and how it works. Continue reading to learn more.
What is Micro TIG welding?
Micro TIG welding is an extremely controlled technique. It is useful for welding objects that are too hot or warped to fuse using standard TIG welding. As the name implies, it happens under a microscope.
Micro TIG welding uses a specialized power supply because it can provide a stable arc down to 1/10 of an amp. Additionally, it uses filler wires with a diameter of .005 to .035 inches. This method allows for the accurate deposit of weld material while producing intricate welds. Weld buildups can be as little as .005 inches.
High-tech lighting and optics are also used in micro TIG. These are essential for preserving the minuscule arc gaps required for low-amperage welding.
Let’s bust a myth
There are numerous misconceptions about micro TIG welding. However, one in particular sticks out. For example, traditional TIG welding may repair a mold or a mold component just as well as micro TIG welding.
In all its recognized, tried-and-true forms, conventional TIG welding cannot match micro TIG’s ability to produce a fine, high-quality weld bead. Additionally, the control micro TIG welding offers is impossible with traditional TIG welding.
Using standard TIG welding for more extensive repairs and micro TIG for more minor, more delicate maintenance makes sense. They are both valuable. However, the microscope and fiber optics utilized with micro TIG welding make it easier for the operator to reach places previously unreachable with traditional TIG welding methods.
High precision
Micro TIG welding allows for exact energy discharge in quantity, method, location, and minuscule spot. A weld spot is formed when the tungsten electrode is removed from the weld surface. Melting begins on the outside and works its way inside.
Like regular TIG welding, micro TIG welding allows for the addition of fill wire and other materials. This is helpful in many applications requiring more material for increased strength. Furthermore, micro TIG welding can melt and fuse two components without filling the wire.
No thermal damage
Another benefit of micro TIG welding is the incredibly low energy input required to produce the weld. Similar to micro laser welding, there is a minimal possibility of thermal damage while welding, even heat-sensitive sections or pieces. Additionally, micro TIG welding lessens distortion that might occur during other welding procedures.
Long-term savings
Micro TIG welding typically reduces residual stress in the repaired mold or component. This is because the welder has greater control over the pre-and post-heat temperatures.
With conventional TIG welding, the area surrounding the weld may experience additional stress, raising the risk of an early failure at the welded location. Micro TIG is a confined, low-current weld incapable of producing that kind of expensive damage.
Micro TIG welding helps preserve the structural integrity of the mold or mold component. It creates easily machinable welds with less heat accumulation.
No time-consuming post-weld tasks
The completion process takes very little time. The competent micro TIG welder’s ability to deposit just enough weld material to finish the repair is mostly responsible for this.
When applied appropriately, micro TIG welding offers a platform for adequate pre- and post-weld preparations. Micro Weld professionals are skilled at ensuring compliance with good welding practices.
Conclusion
Micro TIG welding is a powerful all-purpose joining technique that produces a wide variety of weld sizes and has good penetration. This procedure is used in the commercial, laboratory, medical, and aerospace sectors.
